Controls manual. Central Air-Sourced Liquid Chiller & Heat Pump MODELS 3CA22 3CA65 3CA127 3CA32 3CA83 3CA147 3CA45 3CA97 3CA169 3CA53 3CA113 3CA203

Transcription

1 Controls manual Central Air-Sourced Liquid Chiller & Heat Pump MODELS 3CA22 3CA65 3CA127 3CA32 3CA83 3CA147 3CA45 3CA97 3CA169 3CA53 3CA113 3CA203

2 Introduction Heating, cooling and energy storage in one! Up to 50% lower energy consumption Passive, free heat and cold storage Independent heating and cooling Natural refrigerant, no greenhouse F-gas Energy exchange between rooms Simple control panel Congratulations with your personal climate! Your climate will now be controlled by this modern heat pump system. It will provide you exceptional benefits and no compromises on comfort or energy use. Please read this installation & maintenance guide with care and keep it to obtain the most benefit of this advanced system. Huge benefit not only for the climate, but also in your building For many buildings, heating and cooling the indoor climate is a huge cost factor. For that reason alone, there is much to be gained. The TripleAqua climate system enables you to independently heat and cool different rooms as required, but using up to 50% less energy. This makes it one of the most efficient systems in the world. Aim: to bring your building to energy label A+++ level! High quality systems, low water temperature A heating system is, in fact, a huge energy consumer. TripleAqua utilises a heat pump combined with high efficiency indoor units. Thanks to the system s unprecedented heat transfer, a much lower water temperature suffices, with huge savings and minimal losses as a result. Smart storage and energy exchange Cooling with a heat pump during the day creates waste heat, while heating creates waste cold. Other systems reject surplus energy immediately. What a waste! TripleAqua exchanges this energy between rooms and passively stores the surplus heat and cold and uses them for free heating and cooling. This results in spectacular energy savings, particularly during the spring and autumn. This document describes in detail the functional controls of the 3CA outdoor unit, a 3 pipe chiller and heat pump. 2

3 Index 0 LEVEL 0.0 Level User Level Building manager Level Service manager OPERATING MODES 1.1 Status read out Enable unit Reset unit Economy mode Sensor read out Menu Tracing Service Test relais SETPOINTS 2.1 Set points setting AM / PM correction CONTROLLING THE COMPRESSOR(S) 3.1 Start and stop Inverter speed control - compressor motor type Average temperature measurement PI-control / Damping / Hysteresis Resonances Propaene limit controls Compressor stopped Start up first compressor Controlling first compressor A or B Compressor runs at lowest frequency with water bypass Compressor oil return procedure Starting the second compressor - speeding up the only compressor 23 3

4 Index Controlling compressor A and B together Stop one compressor Boost compressor (A&B) at extra cooling demand Speed up compressor (A&B) at extra heating demand Boost compressor (A&B) at extra heating demand MID SEASON 4.1 Combined cooling / heating / (spring/autumn) Load and unload from tanks Loading tanks - day Loading tanks - night Combined evaporator operation (air & water) Controlling bypass valves Controlling bypass valve - cold water Controlling bypass valve - warm water Controlling bypass valves - external SUMMER 5.1 Air heat exchanger as condensor Air heat exchanger - additional condensor operation Air heat exchanger - pump down Water heat exchanger - evaporator WINTER 6.1 Air heat exchanger as evaporator Defrost process air heat exchanger Freezing of ice on the air heat exchanger Dynamic defrost Corrections for the counter Defrost air heat exchanger Drip time air heat exchanger - end of defrost Manual defrost activation 40 4

5 Index 7. PUMP CONTROL - PUMP TEST 7.1 Pump test Pump - low flow control Pump - proportional pressure control Pump - flow setting Pump - economy mode Flow switch dp control REFRIGERATION VALVES 8.1 Electronic expansion valves Open - close solenoid valves Evaporation pressure controller valve Safety valves MODBUS INTERNALLY MODBUS EXTERNALLY ALARMS 11.0 Alarms Probes alarms Frost alarms Propæne alarm Pump alarm Flow alarm Hot / Cold Water alarm SOFTWARE INPUT / OUTPUT 13.1 Digital input / output Analog input / output 58 5

6 Index 14. HARDWARE OVERVIEW 14.1 IPG215D controller Expansion valves controller Remote display Frequency inverter controller EC - Fan (s) Pump Leak detector Flow detector NTC thermistors PT1000 thermistors Pressure transducer Pressostats 73 APPENDIX Appendix A LISTS Appendix B Propæne 90 6

7 0 Levels 0.0 LEVEL - User Basic screen: Only read out, no changes possible. Note: A 2 nd controller can be connected externally, i.e. in a remote control cabinet. Type model to order: VGIPG-0P000 part.no.: Please observe cable specification and max. length 100m. 0.1 LEVEL BUILDING MANAGER Having entered a password, basic settings and changes are possible: Set points, date, mode etc. 0.2 LEVEL SERVICE MANAGER Having given a service password, all settings and changes are possible: Note: Password Levels not yet implemented 7

8 1 Operating modes 1.0 OPERATING MODES When power is applied, TRACING is active when the ambient temperature is below +5 and/or if the evaporator water outlet temperature (EvapWOut) drops below +5 C. The heaters for the compressor oil lubrication are powered permanently. It reassures good lubrication and avoids that refrigerant is mixed with oil. Apply power to the machine at least 8 hours before starting up the compressors. After a power disruption, the controls will perform a reset automatically (REBOOT). By pressing the MODE button T3, you enter the MODE screen below. The machine can perform 4 different modes of operation: STANDBY: No cooling, no heating. Pump active STANDBY 40%. o If water temperature is below 6 C : heating operation starts. HEATING: No water cooling, heating on set point. Pump active on normal % COOLING: No water heating, cooling on set point Pump active on normal %. AUTO: Cooling and heating on set points Pump active on normal %. T4/T5 to select the mode, confirm with T7. T6 gives access to Alarms. T8 will start manual defrost. REMARK: Changing between modes is done internally by mode STANDBY to reset status of the controls to a neutral situation. Acceptance of a new mode takes min. 1 minute. Counters are visible showing operation time in days (number of days for the machine in operation or standby since commissioning, your guidance for the use/age of the system machine in relation to the life of the system). Operation times of compressors, pumps and fans are shown. Also consumption values in kwh are shown since start up. 8

9 1 Operating modes 1.1 STATUS READ OUT By T8 in the main menu you can check the status of compressors, fan, pump and all pressure probe In these screens, T2 will step up, T5 will enter the alarms, T1 will scroll left and T8 will scroll right ENABLE UNIT By closing the external input XK 1 & XK 2 (NO-C potential free contact) the machine can be enabled. XK connector closed: XK connector open: Activates last known mode: auto, cooling or heating. By manual input or by external ModBus command, another operating mode can be selected. Always STANDBY. Screen reports EXTERNAL STOP RESET UNIT By closing external input XK 5 & XK 6 (NO-C potential free contact) the machine can be reset. A reset will also open all XEV valves and liquid valves for 3 sec to equalize refrigerant pressures if both low and high pressure values are < 1.5 barg. (In this case all refrigerant is located in water heat exchanger and liquid receiver) 9

10 1 Operating modes 1.3 ECONOMY MODE By closing the external input XK 3 and XK 4 (NO-C potential free contact) the machine can be set in the ECONOMY mode. This ECONOMY MODE brings a high sound reduction (i.e. at night) and part load control, so high savings. In this mode the maximum compressor speed is 40 Hz. The fan is limited at maximum of 50 %. This will result in approx. ± 5-8 db(a) sound reduction. The fan value can be set between 25% and 75%. XK connector closed: XK connector open: Activates ECONOMY mode. Normal operation. A 2nd method to activate the ECONOMY mode is by the 24H clock on the keyboard: See screen Ecomode: Enable / Economy by keyboard Default is ECONOMY set from 22H00 Hrs to 05H00 Hrs. 1.4 SENSORS READ OUT By T2 PROBES in the main menu you enter the PROBES menu, having two screens, swap by T8/T1. Using button T3 and T4, more detail information about circuit A and B is accessible. 10

11 1 Operating modes 1.5 MENU When you enter this MENU, one of the symbols is high-lighted. Scroll with T1/T8 and use button T6 to enter the following sub-menus, all of which are accessible and listed below: In/Out Probes, Calibration EEV Electronic Expansion Valves COMP Compressors TIME ` Setting day / time ALARM Alarm List FAN Axial Fan Menu DEFROST Defrost Menu ENERGY Energy Menu PUMP Pump Menu ECONOMY Economy Menu 11

12 1 Operating modes TIME NOTE: Change the time only if unit is in STANDBY mode To avoid errors in the log file of the system or handling of internal procedures when in operation. Select In/Out. Now all probes can be accessed and calibrated. 12

13 1 Operating modes PUMP Menu ENERGY By more screens the polarities from the divers in- and output scan be adapted if needed. 13

14 1 Operating modes 1.6 TRACING Items to be modified in the Tracing screen: 1.7 SERVICE Read out of in/out and expansion valves, analogue and digital inputs and outputs. See chapter 13 to obtain details of all input and output functionality. 14

15 1 Operating modes 1.8 TEST RELAIS In this menu, manually, digital outputs and relays can be changed in state to test the internal hardware functions by the controller outputs. When this function is activated, also analogue outputs are forced to 5,00 Volts manually. ONLY OPERATE THESE RELAIS AND OUTPUTS MANUALLY IF YOU ARE FULLY FAMILIAR WITH THE FUNCTIONALITY AND RISKS. YOU ARE OVERRULING THE MACHINE. Menu to reset parameters to default, to update screen software and to reset the log file. 15

16 2 Setpoints 2.0 SET POINTS The TripleAqua system operates with two dynamically set points controlling the cold water outlet and the warm water outlet temperature. Both set points can be modified with great freedom and are automatically adapted by the average ambient temperature over the last 24 hours, as well as the momentum of the day. This adaptive control technique enables great savings in energy. By T4 <SET> you can enter the set point main menu. 2.1 SET POINTS SETTING In order to determine the actual set point for cooling and heating two lines are defined based on the average daily ambient temperature. The ambient sensor Amb-Temp records 288 values per day to calculate the average temperature according to the FirstInFirstOut method. So, an average is known over the last 24 hours. At a REBOOT the actual value is taken. If the ambient sensor is defective, the last known value is used and a Pre-Alarm. Using this average temperature, the weather type is known and the set points for heating and cooling are calculated. By parameters they can be adjusted. See table. Minimum and maximum set point is adjustable separately for heating and cooling at the corresponding average ambient temperature. See the graph below for further explanation. In these screens, T1 will scroll left, T2 = Escape, T4 = UP, T5 = DOWN, T7 = SET, T8 will scroll right. 16

17 2 Setpoints Allowed range set points for heating : Range from 20 to 40 C Allowed range set points for cooling: Range from 7 to 25 C Heating line : Default a parameter at -12 C range from -16 to +10 C (outdoor max heating set point ) and a parameter at +18 C range from 0 to 30 C (outdoor min heating set point) Cooling line: Default a parameter at 0 C range from -16 to +10 C (outdoor min cooling set point ) and a parameter at +25 C range from 0 to 30 C (outdoor max cooling set point) 2.2 AM / PM CORRECTION TripleAqua can apply a morning / afternoon set point compensation (AM/PM Correction) as a function of the moment of the day: In the morning, a building demands more heating than average, in the afternoon less. However, the cooling demand in the afternoon is large, and low in the morning. With AM/PM correction the system will, at all times of the day, run at most economic water flow temperatures, delivering at peak moments sufficient capacity. 17

18 2 Setpoints Find this menu by scrolling T8 in the set point menu. The corrections for cooling and heating are set with parameters AMPMWarm and AMPMCold. (Warm Range +0 to +5 K, default 3K; Cold Range +0 to +4K, default 2K). Corrections are largest at fixed times: 6h AM and 6H PM (18H) see graph hours 18

19 3 Controlling the compressor(s) 3 CONTROLLING THE COMPRESSOR(S) Compressors are speed controlled and follow step less the capacity demand. Expansion valves for the water heat exchanger evaporator are also involved in the capacity control. The controller compares the actual cold and warm flow temperatures with the calculated lines for the set points. See 3.1. The circulation pump reports by internal communication how much water flow is passing in the building. At low water flow, a low demand building function is activated and it decreases the compressor speed or change into a lower step. 3.1 START AND STOP Before a compressor may start, the pump test must pass. Also after a reset this pump test is performed. See paragraph 7. If two compressors are present, compressor A or B having the lowest running hours will start first. A minimum delay time 120 sec. (Range is 1-255) applies before the 2nd compressor will start if needed. For the start- stop and minimal operation times parameters are set to limit the amount of starts per hour, the operation time avoiding overloading and reassurance for proper oil return. Delay between stop and restart for a compressor is 2 min, range 1 to 60 min. Minimum operating time for a compressor is 5 min, range is 0 to 10 min. After a compressor stops, both valves discharge valve and suction valve will open to equalize the pressure and reassuring easy restart. When possible, the suction valve opens so the air side heat exchanger is at low pressure. The liquid valve to the water heat exchanger evaporator is controlled together with the corresponding electronic expansion valve INVERTER SPEED CONTROL - COMPRESSOR MOTOR TYPE High starting currents and overload is avoided by controlling the speed of the compressors in a smooth way applying ramp-up and ramp-down. A compressor starts from 0 Hz to start speed 30 Hz in 2 sec. The controller sends a 0-10V signal to the VLT inverter frequency controllers : 2.5 V is 25 Hz; 7.0 V is 70 Hz. NEVER operate these compressors faster as 8,7 Volt (87 Hz). Due to motor torque the VLT keeps power & frequency in a linear pattern: Compressors have 230V 3 ph 50Hz windings: Δ connection. At 400V the frequency increases to (400/230) x 50 = 87 Hz. NEVER operate in Δ on 50Hz - 3f 400 V! If the VLT is defect, change it into Y connection! The 40S voltage compressor is not suitable to run in Δ on 50Hz - 3f 400 V. 19

20 3 Controlling the compressor(s) AVERAGE TEMPERATURE MEASUREMENT The demand for cold / warm water is calculated by the value of four water temperatures: COLDTEMP WARMTEMP = 33% from cold water tank outlet ColdW-out and 67% from the evaporator EvaW-Out. Compared against the set point Cooling line. = 33% from warm water tank outlet HotW-out and 67% from condensor ConW-Out. Compared against the set point Heating line. By partly controlling on the leaving temperature after the tanks, a delay and easy behavior is achieved PI-CONTROL / DAMPING / HYSTERESIS A change of capacity is tampered with a PI-controlled DAMPING. Default 70%. Range %. If COLDTEMP and/or WARMTEMP deviates > 3K from Cooling/Heating line: Default damping applies. If COLDTEMP and/or WARMTEMP deviates < 3K from Cooling/Heating line: Damping reduced to 0%. Low % damping = slow changes of speed, 100% = no damping, very fast control. RECOMMENDATION: Set the PI- damping lower if the controls act too nervous. Usually, the system does not need to respond fast to temperature changes. COLDTEMP > Set point Cooling line + hysterese 1 K WARMTEMP < Set point Heating line hysterese 1,5 K DEMAND: Speed up with max. time 30 sec Damping to PI control if dt < 3K COLDTEMP < Set point Cooling line hysterese 1 K WARMTEMP > Set point Heating line + hysterese 1,5 K NO DEMAND: Speed down max. time 30 sec Damping to PI control if dt < 3K Range hysteresis for cooling: 1,0 5,0 K. Range hysteresis for heating: 1,0 8,0 K. 20

21 3 Controlling the compressor(s) RESONANCES In case of internal or external vibrations, caused by the compressor speed control, the controls can avoid and skip three areas of frequencies on purpose to avoid vibration by resonances. In principle, speed control of the compressor is step less PROPÆNE LIMIT CONTROLS If pressures go outside of the normal operation area, speed is adjusted and Pre-Alarm is given: Min pressure LP 0,7 barg Range 0,0 to 4,0 Pre-Alarm Diff pressure HD-LD too small 4,0 barg Pre-Alarm after 15 min. Max pressure HP 21 barg Range 15,0 to 30,0 Pre-Alarm & speed down Lowest freq. in actual step. REMARK: The above limits do not apply during a defrost cycle or an oil return. 21

22 3 Controlling the compressor(s) COMPRESSORS STOPPED All compressors are stopped. There is no cooling or heating demand. Pump is on in normal speed %. If there is a demand for cooling or heating, depending from the mode COOLING, HEATING, AUTO, and no alarm is active for that circuit, the compressor with lowest running hours will start. step START UP FIRST COMPRESSOR One or both discharge and suction valves will close depending of the operation mode. 1st compressor goes to 30 Hz. After a delay, step is entered. The valves position is not changed. You can alter the settings in this step here CONTROLLING FIRST COMPRESSOR A OR B The speed to increase or decrease the compressor is set by the damping, see 3.1. The capacity from the compressor is fully step less controlled from 30 Hz to 50Hz. If the compressor is on at 30 Hz but there is no demand for cooling and/or heating, after 60 sec (adjustable between 1 to 255 sec ) the controls will go to step If the compressor is on at 50 Hz but there is sufficient demand for cooling or heating, after 120 seconds (adjustable between 1 and 255 sec) the controls will go to step COMPRESSOR RUNS AT LOWEST FREQUENCY WITH WATER BYPASS The compressor A or B will operate for a while at the lowest allowed frequency being 25 Hz. If during 60 sec (adjustable between 1 and 255 sec ) there is still no demand for cooling / heating, the compressor is stopped (step 3.2.0). But if for 5 sec there is some demand, return to step

23 COMPRESSOR OIL RETURN PROCEDURE The time a compressor A or B runs below 40 Hz is counted. If a limit (default 1000 sec, range ) is reached, that compressor speeds up for 15 sec to 50 Hz and goes back to the previous operation at lower speed. The counter is reset. The counter is also reset if, by controls, it has been at or above 50 Hz for 15 sec STARTING THE SECOND COMPRESSOR - SPEEDING UP THE ONLY COMPRESSOR Most TripleAqua 3CA models have double, identical compressor circuits. The 3CA22 and 3CA32 have only one. For models with only 1 compressor, it will follow the compressor speed / steps as in to individually. Ignore the text regarding any second compressor. For models with double compressor, they will run at identical speeds, unless there is a defrost. In case one of the two compressor circuits has a problem, the other system will take over functionality. However, capacity of the remaining system may be limited. There is sufficient demand to start the 2nd compressor. First, the 1st compressor is reduced at 30 Hz to minimize the starting current. 2nd starts at 30 Hz. After this step, go to step Valves are not changed in position CONTROLLING COMPRESSOR A AND B TOGETHER Compressors are controlled step less and identical between 30 Hz and 50 Hz. If compressors run at 30 Hz without any demand for cooling/heating, after 120 sec go to step If compressors run at 50 Hz with more demand for cooling but not for heating, after 120 sec step If compressors run at 50 Hz with more demand for heating and/or for cooling, after 120 sec step

24 3 Controlling the compressor(s) STOP ONE COMPRESSOR The compressor having the lowest running hours is set to 50 Hz. The compressor having the largest running hours is stopped. Go to step BOOST COMPRESSOR (A & B) AT EXTRA COOLING DEMAND Compressor(s) is / are step less controlled between 50 Hz and 60 Hz. In this step, compressor(s) may operate a limited time per day at 60 Hz as long as the discharge pressure remains under 21,0 barg (see 3.1). In this BOOST step, the unit will perform maximum cooling capacity. If the compressors meet this limited time at cooling (Default 60 min, range min) go to step At night at 01.00h (1AM) this timer is reset, every 24h. If the compressors run at 50 Hz but there is decreasing demand for cooling, after 120 sec, step

25 3 Controlling the compressor(s) SPEED UP COMPRESSOR (A & B) AT EXTRA HEATING DEMAND Compressor(s) are controlled step less between 50 Hz and 70 Hz. If compressor(s) run at 50 Hz but there is decreasing demand for heating, go to step If compressor(s) run at 70 Hz but there is increasing demand for heating, go to step BOOST COMPRESSOR ( A & B ) AT EXTRA HEATING DEMAND If (both) compressor(s) run at 70 Hz but the demand for heating remains high (difference between WARMTEMP and the Heating line is more than 2K, over minimal 15 min.), (both) compressor(s) speed up to the boost speed frequency between 70 Hz and 87 Hz. Maximum limited time per day in boost is 99 min. At night at 01.00h the timer is reset, every 24h. If compressor(s) run at 70 Hz but there is decreasing demand for heating, go to step

26 4 Mid season 4.0 MID SEASON The TripleAqua system can produce warm water by producing cold water and vice versa. Often, the requirement for heating and cooling is not equal. The surplus of heating and/or cooling can be stored in the internal buffer tanks, and in addition, when applicable, even in external tanks. In MID season (spring and autumn), the system will usually be run in the AUTO mode. The air heat exchangers can operate as condenser (see Summer), but also as evaporator (Winter). Based on the return temperature from the building, the system decides if it is useful to restore tanks at night for the next cycle, at low energy costs, favorable outdoor conditions and at low demand. This procedure reassures maximal efficiency. Warm and cold thermal energy is generated in one go, and if not used directly, stored for later use. Thus, this passive energy remains available and it is for free. 4.1 COMBINED COOLING / HEATING (SPRING / AUTUMN) In the mid-season there will often be a demand for cooling as well as for heating. The set point control (see 2.1 and 2.2) determine the demand. If both demands are within the corresponding cooling and heating dead band, a thermally ideal situation is at hand : The cooling capacity supplied to the cold flow pipe creates heat which is useful given to the warm flow pipe to the system. The air heat exchanger has no function. Suction valves and discharge valves are closed. The system makes heating from cooling. The left water plate heat exchanger operates as an evaporator, the right water plate heat exchanger operates as a condenser. Additional cooling: In AUTO MODE, in some situations, (there is a heating demand, but the cooling demand is no longer valid), it can be more favorable and efficient to continue to keep using the water heat exchanger as the evaporator, instead of the air heat exchanger as evaporator. Cold water outlet will now become lower than the set point calculated. Thus, additional cold energy is kept in the system, possibly still be used at some users, otherwise kept in the cold storage tank. The cooling set point is now fixed at +8 C. 4.2 LOAD AND UNLOAD FROM TANKS Buffer tanks can be filled with pure water (no PCM), with limited thermal capacity affecting the part load requirements. As option tanks can be equipped with cylinder shaped tubes, filled with Phase Change Material. They differ for the warm tank and cold tank, with different melting temperatures. 26

27 4 Mid season The PCM in the warm tank is 32 C type and melts at a temperature > 34~35 C. It solidifies below 32 C. Storing thermal heat is by melting the PCM inside the tubes. This requires a flow temperature from the condenser above 35 C, the warm bypass valve is open. In return, passive heat can be retrieved to the water flowing through the tank: unloading of thermal energy is by solidifying the PCM. This happens if a low flow of warm water lower than 32 C is passing. The graph explains in which area this is possible. The warm tank will not give any passive heat anymore above approx. 30 C. Loading the cold tank happens in a similar way. The PCM in the cold tank melts is 13 C type and melts at 15~16 C. Loading cold energy is done by solidifying the PCM. This needs a flow temperature of 8~10 C from the evaporator, the cold bypass valve is open. Also, passive cooling of water (=melt the PCM in the tank) will occur if we need a low flow of cold water above this 13~15 C. The graph shows when it is possible. The cold tank will not produce cold water in a passive way at lower temperatures. Loading is possible at day times if a surplus of cooling OR heating is available. See Loading at night is possible if average return temperature is between a temperature range. See LOADING TANKS - DAY If the cooling demand or the heating demand are not equal, the highest prevails to determine the capacity. This may lead to a too cold flow of cold water (heating demand is higher than cooling demand) or to a too warm flow of warm water (cooling demand is larger than heating demand). The cold and warm buffer tanks can store this surplus of thermal energy. Now, the according bypass valve is opened to load the right tank. The internal bypass reassures flow so the energy shall be used to be stored into the PCM LOADING TANKS - NIGHT Also at night ( between 22H and 05H) the machine may decide, running at the lowest allowed capacity step, to store warm energy in the warm tank and cold energy in the cold tank. In addition, lower energy prices and more favorable operating temperatures may add up to the economic advantages. This situation is in particular useful if the tanks can be used in a passive way during the day. This can be expected in the mid-season, when average outdoor temperatures between +8 and +15 C according to the graph in 2.1. This situation may happen many times in a year. The system recognizes this by checking the average daily Return Water temperature: between 21 C and 25 C (values are adjustable). The average value is calculated in a register. BypHotW and/or BypColW valves are opened depending on SetHotW and SetLowW. Mutual loading at night at a low price level ( between 22H and 5H) with fixed set points 8 C cold water leaving evaporator and 36 C warm water leaving the condenser. Loading is completed if the set point is achieved including the given hysteresis. One of both tanks will meet this condition first: 27

28 4 Mid season BypColW closes if COLDTEMP < 8 C 1K (Go to 6.1 until also the warm tank is loaded) OR BypHotW closes if WARMTEMP > 36 C + 1,5K (Ga to 5.1 until also the cold tank is loaded) 4.3 COMBINED EVAPORATOR OPERATION ( AIR & WATER ) If there is a demand for heating, the unit will prefer to extract the thermal energy from the evaporator water plate heat exchanger. In second choice, the air heat exchanger is set as evaporator. This setting is only valid in the mode AUTO. The air heat exchanger(s) can assist or -if there is no demand for cold water, become the only evaporators. Both expansion valves are activated and controlled in parallel. Suction valve is open. The air heat exchanger as evaporator is controlled according to 6.1. The water heat exchanger as evaporator is controlled according to 5.4. NOTE: Superheat is raised from 6K to 10K (compensation in ΔP & evaporator pressure controller) In the mode HEATING no cold water is produced. Set point is not relevant. Liquid valves and the expansion valves for the plate heat exchanger evaporators remain closed, unless a defrost takes place. 4.4 CONTROLLING BYPASS VALVES For various purposes the TripleAqua unit is equipped with two internal bypass valves on the water side. In addition, externally in the field, at the end of the hydraulic system, two bypass valves are fitted CONTROLLING BYPASSVALVE COLD WATER This valve is located between the cold water tank outlet and the return in the Triple Aqua machine. Provided not STANDBY MODE it will be activated when the system is in (one or more of) the following conditions: Mode COOLING Mode HEATING (for extra (de)frost capacity) Frost Defrost is active Loading the cold tank At stand still position to check water circulation Measuring the return temperature In the lowest capacity step 3 (25 Hz) During the pump test at start up 28

29 4 Mid season During reduced demand building and (Cooling demand OR mode COOLING OR mode AUTO) If the flow switch does not (yet) activates as there is not (yet) a flow If none of these conditions is true, the valve is deactivated. During activation, the symbol is shown CONTROLLING BYPASSVALVE WARM WATER This valve is located between the hot water tank outlet and the return in the Triple Aqua machine. Provided not STANDBY MODE it will be activated when the system is in (one or more of) the following conditions: Mode HEATING - SOMETIMES IN AUTO AND IN COOLING TBA Frost Defrost is active at EvapWout <= 14 C Loading the warm tank At stand still position to check water circulation Measuring the return temperature In the lowest capacity step 3 (25 Hz) During the pump test at start up During reduced demand building and (Heating demand OR mode HEATING OR mode AUTO) If the flow switch does not (yet) activates If none of these conditions is true, the valve is deactivated. During activation, the symbol is shown CONTROLLING BYPASS VALVES - EXTERNAL These two valves are NOT inside the TripleAqua machine. They need to be located in the building pipework at a spot, far from the TripleAqua machine. One bypass valve connects the warm pipe with the return at activation, the other bypass valve connects the cold pipe with the return at activation. Their activation is mutually controlled by a 230V 1f 50Hz control command coming from the TripleAqua machine connectors XK 5 and XK 6. These valves have a Kv value which is sufficient to reassure enough water circulation in the full system depending on the size of the TripleAqua machine(s) during a defrost cycle only, activating the internal water. If not in STANDBY MODE, these valves are activated if one or more of these conditions occur: Frost alarm At a defrost cycle If flow switch doesn t detect flow and flow switch doesn t close by internal valves: after 15 sec. During activation, the symbol is shown. 29

30 5 Summer 5.0 SUMMER In the summer there is mainly/only demand for cooling and (almost) no heating. Waste heat has no use to be stored in the tank and it has to be rejected. The air heat exchanger is used as a condenser. If there is no use to produce warm water at all, the system is most economical in the mode COOLING. The return temperature of the system may stay lower than the average building temperature. 5.1 AIR HEAT EXCHANGER AS CONDENSOR The unit works with one / two compressors to cooling demand. There is excess heat, which is not taken away (sufficiently) by the water condenser heat exchanger. It heats up more than needed. The temperature HOT TEMP is calculated and compared to the Heating line. If it gets 5K warmer than the heating line for 15 seconds, or if CondWOut > 50 C, the air heat exchanger becomes a condensor. Activating the Air Heat Exchanger as a condensor: 1) The compressor(s) are quickly set back to 30 Hz. Wait 5 sec. 2) Discharge valve(s) opened (avoiding this valve is not opened at too high discharge pressure ) 3) Compressor(s) speeding up to the required capacity 4) Ventilator from Air Heat Exchanger controlled 0-10V to maintain a condensation pressure 5) Air Heat as Condensor: a. Condensation temperature :=> Delta T from 5K + set point Heating line (see 2.1) b. Condensation pressure is calculated given this condensation temperature 30

31 5 Summer c. P controls condensation pressure, where P set Cond. + Prop. band (1.0 bar) d. Max revolution for condensor fan is limited to a linear function: * if the ambient temperature 15 C of lower, fan will never run above 60% speed * at ambient temperature between 15 C to 30 C, fan speed rises from 60% to 100% * if ambient temperature 30 C or higher, speed may be 100%. e. There is no minimum revolution. (Wind can even cause for sufficient air stream) f. Minimum condensation pressure. Default 10,0 barg. Range between 9,0 and 15,0 One (group of) fans is used for all circuits. control is depending from the set point from the line Heating + delta T = 5K. If the lowest condensing pressure (circuit A or B) falls below the minimum pressure, the fan speed is decreased. The highest value in A or B -if in cooling- determines the fan(s) speed. 5.2 AIR HEAT EXCHANGER - ADDITIONAL CONDENSER OPERATION In addition to 5.1 the air heat exchanger can assist being a condensor in parallel to the water heat exchanger condensor: parallel condensor operation. In general, there is not sufficient demand for warm water / low flow on the water condensor. Discharge pressure is rising. Discharge valve opens and fan is activated for a minimum of 30 seconds according to: At ambient temperature from 0 C of lower: 19,0 barg (54 C) At ambient temperature from 15 C of higher: 17,5 barg (50 C) At ambient temperature between 0 C and 15 C: linear drop between 19,0 and 17,5 barg. The air heat exchanger (and fan) is stopped if the discharge pressure has dropped with 1,5 bar. 5.3 AIR HEAT EXCHANGER - PUMP DOWN If the air-side heat exchanger has been used as condenser, especially in colder weather condition, liquid refrigerant will be present inside. Before the air heat exchanger is reversed in a different mode, the refrigerant needs to be reclaimed. Upon termination from a condenser cycle - and at a reboot, the suction valve is pulsated: one pulse per 10 seconds for 3 min, provided the compressor is active. Then the suction valve will remain open so the air heat exchanger is now at suction pressure and all refrigerant is reclaimed. 5.4 WATER HEAT EXCHANGER - EVAPORATOR The water heat exchanger evaporator is activated if all these conditions are met: Demand for cooling (see 3.1.2) Flow switch is closed (see 7.6) 31

32 5 Summer 15 seconds delay counter has elapsed Compressor has started - Suction valve is opened. - Liquid valve for the plate heat exchanger evaporator is opened. Extra superheat at start: In the first 5 minutes of evaporation, the superheat is additionally increased: 1st min 5K extra, 2nd min 4K extra, 3rd min 3K extra, 4th min 2K extra, 5th min 1 K extra. This to reassure extra superheat at start up, keeping oil temperature warm and to raise the discharge temperature more quickly, so the suction line/liquid heat exchanger becomes activated a.s.a.p. (EER more effective and economic for R433A) Controlling the cold water capacity: The superheat for the plate heat exchanger as evaporator is also used as the main tool to control the cooling capacity on the cold water side and is thus adapted by the demand for cooling. If EvapW-Out is more than 1K lower as the Cooling line: Raise superheat with 2K per extra degree which EvapW-Out is below the Cooling line If EvapW-Out drops more than 3K below the Cooling: Extra raise of superheat with 1K per additional degree EvapW-Out below cooling line 32

33 6 Winter 6.0 WINTER In the winter there is mainly / only be demand for heating and (almost) not for cooling. Waste cold has no use to be stored in the tank and it has to be rejected. The air heat exchanger is used as a evaporator. If there is no use to produce cold water at all, the system is most economical in the mode HEATING. The return temperature of the system may stay higher than the average building temperature. Both internal tanks (Warm & Cold) will may be used for heat storage too. In order to provide sufficient heat, one or both compressors are activated (excluding at defrost). 6.1 AIR HEAT EXCHANGER - EVAPORATOR The unit will work with one or two compressors. This gives cold energy production. In HEATING mode, the air heat exchanger will automatically be set as evaporator. In AUTO mode, the cold energy generated may not all be needed by the evaporator plate heat exchanger: it may get colder as is needed. So, the Air Heat Exchanger (s) will (additionally) serve as evaporator. The temperature COLD TEMP is calculated and compared with the cooling line: If COLD TEMP is 5K below the cooling line for 15 seconds, or if EvaWOut <7 C, or if the suction pressure from (one of) the airside exchanger from A and / or B from the compressor operating drops under the 3.8 barg, we will turn on the air heat exchanger as an evaporator too. 33

34 6 Winter Setting the Air Heat Exchanger as an evaporator is done as below: 1) Superheating from the air heat exchanger set at 6K. 2) The compressor is quickly decreased to 30 Hz; wait 5 seconds 3) Suction valve open for active circuit 4) Compressor speeds back up to the desired frequency 5) Increase fan speed to the desired revolution (see c. And d. For Max. And Min. Revolution) Fan speed control for Air Heat Exchanger as Evaporator: The max revolution for the axial fan is constrained linear ceiling function: a. The max. revolution for axial fan is limited according to a linear max. function value: * if the ambient temperature is at +7 C or higher, fan will never be faster than 70% * from ambient temperatures +7 C to -7 C, the speed increases linear to 100% * if the ambient temperature is -7 C or lower, fan may run at 100%. b. The min. revolution for the axial fan is suction pressure controlled according to the last known average suction pressure pressure of the active compressor over the last 2 minutes. If Suction pressure equals/under 6.0 barg : FAN =20 %. Above 6.0 barg fan will go off. For every 0.1 bar the Psuct5sec Average is lower, the FAN SPEED increases with 2 % extra I.e.: at average 4.0 barg, the fan will run at 60%, at 2,0 barg it will be 100%. Extra superheat at start: In the first 10 minutes of evaporation, superheat is additionally increased: 1st min 10K extra, 2nd min 9K extra, 3rd min 8K extra, 4th min 7K extra, ( ), 10th min 1 K extra. To reassure extra superheat at start up, keeping oil temperature warmer and to raise the discharge temperature more quickly, so the suction line heat exchanger becomes activated too. (EER effective and economic for R433A) The Air Heat Exchanger as evaporator is switched off if: the compressor is stopped (no demand) or 34

35 6 Winter suction pressure air heat exchanger raises above evaporation temperature 10 C (6,0 barg) see DEFROST PROCES AIR HEAT EXCHANGER In the winter frost will built up on the air heat exchanger. This will need to be periodically removed by the machine. We distinguish two phases: frost building and defrosting. Both have their own factors: During the frost build up: Factor Name Range Default Comments counter Counter sec variab. counting actual ice formation counter value TcntDfr sec calc. calculated time: start of defrost ambient temperature Amb-Temp -50~100 C - initial presets the counter value coil temperature Air-HeXA -50~100 C - actual coil temperature A or B minimum coil temp TstartDef -5 ~ 5.0 C 0.0 condition to start/stop counter minimum suct pressure MinSuctp 0,0 ~2,0 barg 0.9 forces defrost process minimum counter value Mincount sec 1800 lowest counter value maximum counter value Maxcount sec 4000 highest counter value dynamic defrost value PdynDef V barg 3.0 correction for counter dynamic defrost correct PdynDef C -1,0-0,0 bar/k -0.1 correction for counter start suction pressure PstartDef barg calc start/stop counter suction press air hx. SucPAHxA 0-11 barg variab measured suction pressure decrease counter DecrCount sec 300 lowers the counter value hysteresis pressure DeltaPDef barg 1.0 hysteresis for start/stop average suct pres. 2min Psuct2min barg variab avg. suction press. last 2 min average suct pres. 5sec Psuct5sec barg variab avg. suction press. last 5 sec compressor in heating A / B True? bit 0/1 Start/stop counter During the defrosting: defrost time DefrTime sec var counts how quick defrost takes maximum defrost time DefrMaxt sec 600 max. defrost time end coil temperature DefrEndT 0-50,0 C 15.0 coil temperature to stop defrost end defrost pressure DefrEndP barg 14.0 pressure to stop defrost drip time DripTime sec 55 Dripping of the coil coil dry time CoilDryT sec 15 blowing the coil dry by fan 35

36 6 Winter FREEZING OF ICE ON THE AIR HEAT EXCHANGER Counters For circuit A and B separate counters are defined. A counter is started only if all these conditions are met in the sequence as given: - Compressor is in AUTO or HEATING mode - Coil Temperatuur Air-HeXA (or Air-HeXB) < minimum coil temperature TstartDef - Suction pressure SucPAHxA (or SucPAHxB) < minimum suction pressure PstartDef The actual suction pressure Psuct5sec is calculated per 5 seconds to filter quick changes. This calculated average Suction pressure Psuct5sec will, as more and more ice is created, slowly drop. This pressure is compared with a dynamic suction pressure calculation line, see dynamic defrost. After some time, average suction pressure Psuct5sec will be lower than the dynamic defrost pressure line. - If true, a 3 minutes timer is started. Previous conditions have to remain valid. If: o Psuct2min SucPAHx >= 0.2 barg (suction pressure starts a decreasing trend) OR: o Amb-Temp - Tcoil >= 10 K (coil is significantly colder than ambient temperature) - COUNTER STARTS The counter is paused (= not reset), if one or more of the conditions below are met: - Compressor stops no defrost period has been performed; - Coil Temp. Air-HeXA (or B) > minimum coil temperature TstartDef - Suction pressure < SucPAHxA (or SucPAHxB) > PstartDef A counter value from compressor A will not be reset if compressor B performs a defrost DYNAMIC DEFROST Freezing of the coil will occur below a certain suction pressure: During the heating process, the actual suction pressure is depending on the ambient temperature, the heating capacity (the frequency of the compressors), moisture content / air humidity and if the evaporator already has been partially frozen up, and above all the speed of this freezing process. PstartDef (dynamic defrost) is the result from the formula below: PstartDef = (PdynDefV) + (Amb-Temp) * PdynDefC) - (freq compressor - 50) /

37 6 Winter The graph below shows the blue saturation pressure from propæne, and the black line for PstartDef. In addition, the actual pressure SucPAHx has a minimum value MinSuctP where defrosting always will start, provided the coil is colder than TstartDef by preventing LD. The black line becomes horizontal. Counter value The counter value also determines how long the evaporator can freeze up. This is depending from the moisture content from the outside air. This initial counter value is determined by the following chart: The chart has four set points: At +6 C (highest moisture content in the air) the minimum counter value Mincount is defined. 37

38 6 Winter At -20 C (lowest moisture content in the air) the maximum counter value Maxcount is defined. If the running counter, including further corrections by change of suction pressure and coil temperature, has reached the counter value, the defrost process is started CORRECTIONS FOR THE COUNTER The controller will constantly shorten or extend the time of freezing up by correcting the counter value. The controls uses two main influences leading to reducing or increasing the counter with a calculated value: A: Correction to ongoing behaviour from the suction pressure: The freezing up goes faster in humid weather. Therefore the suction pressure drops faster too. The average suction pressure is compared with the average suction pressure over the last 2 minutes. As long as no icing occurs, they will hardly differ. On the contrary, a wet coil may even give a better transmission, so that the counter value can even increase. Because (Psuct2min - SucPAHxA) varies constantly, the counter is sometimes decreased, sometimes increased: Counter := Counter - 2,5 * ( Psuction AVG 2MIN Psuction 5sec) B: Correction to ongoing behaviour from the temperature difference between coil and ambient temperature: If Tcoil is more than 10K lower than Tambient, it is concluded that the coil is at least (partially) frozen and the counter is corrected by every extra K difference according to : If (Tamb - Tcoil) > 10K then Corrective = ( ( Tamb - Tcoil )- 10K ) * 50 / 1000 ) 38

39 6 Winter DEFROST AIR HEAT EXCHANGER If the counter from circuit A or B has reached the calculated counter value including the corrections as above, the circuit will start a defrost. Following actions will take place at a defrost: STEP 10 The compressor which belongs to the circuit to start a defrosting cycle now will speed up from 30 Hz to f = 14 + (Psuct AHX * 1,2) [Hz] and will be limited between 20 to max. 70 Hz. A quick and capacity controlled defrost procedure is performed. Fan(s) are OFF. Bypass Cold water small and both Bypass valves large (externally mounted) will be opened to reassure a sufficient water circulation over the plate heat exchanger evaporator. The circuit which does not yet need a defrost if in operation- will go OFF. Suction valve from the circuit to start a defrosting cycle will close and Discharge valve will open, Air heat exchanger becomes CONDENSOR. The EEV on the water side is enabled, basic superheat will be 6K, added with additional superheat 2K for every degree EvapWout will drop below +10 C to avoid a too low water temperature. If Evap W-Out drops below 14 C, also the Bypass Hot Water valve is activated, adding more thermal energy to the defrost process. A counter DefrTime will start. The defrost procedure stops if just one of the following conditions are met: Defrost time DefrMaxt is reached by the counter DefrTime. Temperature coil Air-HeXA (or B) hits the end defrost temp DefrEndT The discharge pressure DisPresA (or B) hits the end defrost pressure DefrEndP DRIP TIME AIR HEAT EXCHANGER - END OF DEFROST The compressor which belongs to the circuit to finish a defrosting cycle is stopped. The Drip time is performed, corrected by actual ambient temperature. Real drip time = DripTime + (Amb-Temp * 2) [sec] The Coil is still warm and will give off some extra moisture to the ambient. IfAmb-Temp >= 3 C : Fan starts at 100% speed during the coil dry time CoilDryT IfAmb-Temp < 3 C : No forced coil dry time ( remaining water would freeze up.) Counter and corrections are reset if a defrost has been successful Values Psuct2min are reset The same defrosted circuit will restart in the heating mode and speeds up to 60 Hz (it has waste heat) Fan will speed up to the previous speed 39

40 6 Winter Together, Discharge valve will close and Suction valve will open. If needed, the 2e compressor comes in too. The not-defrosted circuit was started later than the circuit just been defrosted. REMARKS: Both circuits will never defrost in parallel. One will wait for the other to be ready. So it will not occur that during a defrost of one circuit, also the defrost moment of the other circuit is reached. That circuit will keep its counter values, as all ice and frost on that coil will not change and counter is stopped. At start of a defrost, the low pressure pressostat is ignored for some time. If a compressor/circuit has gone into an alarm, then the OTHER compressor will restart once defrost cycle has ended (un-)successfully. 6.3 MANUAL DEFROST ACTIVATION In special cases, a service engineer may want to start a manual defrost on site. To start this: from the MODE menu, press T8 to enter the Manual defrost activation. Then, press T4 for circuit A or press T6 to perform a manual defrost for circuit B. 40

41 7.0 PUMP CONTROL PUMP TEST 7 Pump control - pump test As standard, TripleAqua machines are equipped with circulation pump and an internal control circuit. This enables maximum savings in energy and operation costs and a reduction in flow noise as unnecessarily high heads are reduced. The pump is maintenance-free, wet rotor, glandless type. The pump operates in different operating modes: Constant pressure (not advised) Proportional Pressure (advised mode) Eco Mode with dynamic differential saving (optional setting) Fixed speed with manual maximum set point (by the controls) The output of the pump is controlled by the flow, power and differential pressure seen. With a 0-10V signal, the maximum output is limited. The pump communicates its internal data, status, actual power, flow, alarms, and more over the internal bus to the main TripleAqua IPRO controller. As the pump responds directly to the hydraulic situation of the building (flow, pressure) it reports this to the main controls. With this information, the TripleAqua machine shall respond directly to any change of flow seen. NOTE: TripleAqua does not need wiring to the indoor units to understand the capacity sum of the building. All communication is done simply over the water flow, head pressure and all temperatures! For more detailed information, please refer to the KSB CALIO series technical information. 7.1 PUMP TEST If the machine is powered up (at any mode STANDBY / HEATING / COOLING /AUTO) the pump will start. As it is unsure if external water flow is possible, both internal bypass valves will be opened. Now, within 60 seconds a water flow of min. 1.2 m3/h has to be reported by the pump to the controls. Now, both bypass valves may close if needed and compressors are enabled. Go from step 3.0 to 3.1 or another step. If not, see: 11.4 Pump alarm. If the ModBus does not report a flow value, the controls will decide the process by the status of the flow switch. Configure Pump correctly: SET to 0-10V, Run contact CLOSED, ModBus SET, PROP. Control. If the Pump has been out of power for a longer period, these settings need to be repeated. 7.2 PUMP LOW FLOW CONTROL If the pump reports a very low flow, (less than 1,2 m3/h), immediately all compressor(s) in operation are reduced to Step 3: This is 25 Hz and bypass valves are opened. It should increase the flow seen by the pump. 41

42 7 Pump control - pump test Now, within 60 seconds, a water flow of minimal 1.2 m3/h is to be reported by the pump to the controller. Bypass valve(s) may close later again. Now, no (Pre)alarm is reported, as there simply may not be a capacity demand. If the pump reports a fairly low water flow (less than 4,0 m3/h), the controller steps down to the mode reduced demand of the building Now the compressor(s) are set back immediately to the lowest speed valid in the actual step, and bypass valve Cold and bypass Hot valves will be activated. Unit recognizes if the pump flow is ok and adapts the capacity of the machine to extreme demand. To enable the water plate heat exchanger, the status of the flow switch is essential. See PUMP PROPORTIONAL PRESSURE CONTROL For common TripleAqua applications, this is the recommended operating mode. It offers extended control range with additional savings compared to constant pressure control. Within the permissible flow range, the pump control system decreases or increases the differential set point of the pump between ½ Hs and Hs (factory set) in a linear fashion with the flow rate. The internal EC pump is usually operated in this mode : automatic based on a square pressure difference over the pump and the measured flow and power. Depending on the capacity demand, the pump follows the ARROW-line as above between ½ Hs and Hs. The <Run> contact at the pump is closed. 7.4 PUMP FLOW SETTING The above-mentioned value Hs determines the head pump lift required to reassure required flow even at the farthest point (= losses with the highest pressure drop ) in the field. By an analogue 0-10 V signal AO4 this pump lift can be set by means of a parameter in the pump menu, in the commissioning phase, to a suitable value for the project. This creates the relationship between the pump flow inside the machine Triple Aqua, the field setting from the pump and the pressure losses in the installed work. The table below shows the relationship between the 0-10 signal AO4 and pump setting %. 42

43 7 Pump control - pump test PUMPCAPACITY AO 4 PUMP OFF <2 Volt Lamp 0% 2,4 V Lamp 10% 3,2 V Lamp 20% 4,0 V Lamp 30% 4,8 V Lamp 40% 5,6 V Lamp 50% 6,4 V Lamp 60% 7,2 V Lamp 70% 8,0V Lamp 80% 8,8 V Lamp 90% 9,6 V Lamp 100% 10,0 V Parameter PumpMaxFlow. Default 70%. Range (%) Steps from 10%. The controller will limit with analogue signal AO4 the pump to a defined value Hs according to: AO4 = ((pump set point * 7600) /10000) (if pump set point <>0) [mv] Example: 70,00 % => (( 7000 * 7600) /10000) = 7720 mv for AO4 STANDBY: LOADING TANKS: HEATING / COOLING / AUTO: EXCEPTION: Output at 40%. Ensures circulation at minimum consumption. Output at 50%. 1st compressor activated on 25 / 30 Hz and also the tanks. Value AO4 = <parameter> PumpMaxFlow Pump boosting up to 100% (10 V) if Frost danger is threatening. 7.5 PUMP ECONOMY MODE By closing the external input connection XK 3 and XK 4, the machine can remotely be set in an ECONOMY mode. The pump is, over the internal Bus, set in mode Eco. NOT YET IMPLEMENTED In the Pump menu, the pump can be manually set in Proportional ( see 7.3) and Eco ( see 7.4) The pump follows in the Eco-mode a quadratic curve (see graph) based on the setting Heco = ¼ * Hs. In comparison to proportional pressure mode, reduction in power consumption up to 40% is possible. REMARK: In order to use the pump(s) properly in this system, make sure to set the internal DIP switch inside the pump in DIP Switch 01 position UNDER (factory setting) in order to disable operation with reduced revolution at low temperatures. As this pump is not used for heating only application. 43

44 7 Pump control - pump test 7.6 FLOW SWITCH ΔP CONTROL The internal MUT flow switch will guard at all times if the water plate heat exchanger is allowed to be operated as evaporator. Before a liquid valve and the corresponding EEV are activated, sufficient water flow has to be reassured. The MUT flow switch can interrupt both circuits A and/or B. Directly across the plate heat exchanger evaporator, a pressure differential switch is located. (MUT type SFS25 M1 IP54). It will close DI12 (FLOW) at a minimum pressure difference of min. 2,5 kpa and it will open (less flow) when the pressure difference drops below the 1,8 kpa. When the normal full load pressure difference of the plate heat exchanger evaporator is approx. 20 kpa, the switch off point will be 25~35% related to the nominal flow. The switch on point will be 30~40 % related to the nominal flow. If the controller detects sufficient flow, the evaporator(s) may be enabled. If insufficient or no flow is detected, [the building has low, or no cold flow at all], directly the internal valve BypColW is opened. This action will increase the flow with approx. 0,17-0,25 l/s (or more, depending on the 3CA model) which possibly may activate the flow switch again. If, after 15 seconds, the flow switch is still not activated, the Bypass External Large valves are activated. This action will increase the flow again, which likely may activate the flow switch again. If, after 300 seconds, the flow test fails, and the EEV are stopped. The Bypass valves are deactivated. A failed flow test does not lead to a compressor alarm. However, if the flow test succeeds (sooner or later), or after a reset is given, the EEV s can be enabled. After 10 min. the flow test is repeated automatically. Self reset. In cooling and in heating mode, the corresponding bypass valves remain activated. 44

45 8 Refrigeration valves 8.0 REFRIGERATION VALVES 8.1 ELECTRONIC EXPANSION VALVES In TripleAqua machines, Emerson ALCO EX 5 / 6 FLR ATEX electronic expansion valves are used. Stepper motor driven valves for precise control of refrigerant mass flow in heat pump applications. Fully hermetic design Stepper motor driven Short opening and closing time Very fast full stroke time High resolution and excellent repeatability Bi-flow operation with positive shut-off in both flow directions Positive shut-off function to eliminate the use of an additional solenoid valve Linear flow capacity Extremely wide capacity range % Continuous modulation of mass flow, no stress (liquid hammering) in the refrigeration circuit Direct coupling of motor and valve for high reliability (no gear mechanism) Ceramic slide and port for accurate flow and minimal wear Balanced force design Corrosion resistant stainless steel body and connections II 3G Ex na IIA T3 Gc X II 3G Ex na IIA T3 Gc II 2D Ex td IIIC Db IP67 45

46 8 Refrigeration valves Type motor Bi-polair Phase current 500 ma Holding current 100 ma Total number of steps 750 Stepping rate 500 Hz Minimum number of steps 50 Superheat setting for the Water Heat Exchanger evaporator is fully capacity depending. See 5.4 For the Air heat exchanger as evaporator default setting is 6K, before correction. See 6.1 The electronic controllers for the 4 expansion valves are CANBUS addresses 1 and 2 set. Check these 4 screens, for circuit A and B separated. Similar for B. 46

47 8 Refrigeration valves 8.2 OPEN CLOSE SOLENOID VALVES Inside the TripleAqua machine, in every refrigeration circuit, three solenoid valves are applied: in the discharge line - to activate the air heat exchanger as condensor in the suction line - to activate the air heat exchanger as evaporator in the liquid line - in series with the EEV, avoiding refrigerant entering the water heat exchanger in case of sudden power failure All solenoids operate EVR valves, which are of the NC type. When the solenoid valve is energized, the EVR valve is opened. Solenoid valves need to be ATEX class Ex zone 2: Flammable refrigerant group I Never replace them with traditional (blue) solenoids! ATEX approved for use in EX zone 2 Embedded coils with long lifetime - Available with 1 m 3-core cable Safe mounting with screw-on system Standard coils 24 V a.c. / 11 Watts Protection class IP65 Dimensioned to max. opening differential pressure 21 barg 47

48 8 Refrigeration valves 8.3 EVAPORATION PRESSURE CONTROLLER VALVE As is described in section 4.3, both the air heat exchanger as well as the water heat exchanger may operate as evaporator in parallel. It may be likely at cold weather, the normal suction temperature of the air heat exchanger is significantly lower compared to the design temperatures of the water heat exchanger. If no added actions are taken, they would operate at identical suction pressures causing risk of freezing and frost damage of the water heat exchanger. In order to prevent this, a suction pressure regulation device is applied in the suction line leaving the water heat exchanger evaporator. This water heat exchanger is very precise and powered by discharge pressure. The suction pressure regulation device is preset in the factory. It should normally not need to be adjusted. If however, the value needs adjustment, it can be set by a qualified refrigeration engineer at an inlet control pressure of 3.4 barg. Do not set the pressure regulation device any lower than 3.4 barg. Risk of freezing of the water plat heat exchanger Only, if both the air heat exchanger as well as the water heat exchanger operate as evaporator in parallel, this device can be adjusted. Both suction pressures can then be seen digitally on the remote controller in the service menu. The primary function of an EPR is to prevent the evaporator pressure from falling below a predetermined value or setting. A consistent evaporating temperature is maintained at the valve setting as evaporator loads decrease. When the evaporator load increases, the valve Opens on a Rise in Inlet pressure above the setting. 8.4 SAFETY VALVES All refrigeration circuits are individually protected with a safety valve. In case of over-pressure, these valves will release refrigerant directly to the back side of the TripleAqua machine (water connections), being as far away as possible from the electrical components. Type of valve: Refrigera SAFETY VALVE REF Opening pressure: 27.6 barg Connection 1/2-3/4 FLAMMABLE REFRIGERANT MAY ESCAPE 48

49 9 Modbus internally 9.0 MODBUS INTERNALLY By an RS485 internal bus, all active, variably operating components, such as the VLT inverters, the axial fan(s), the water circulation pump(s) communicate together with the IPRO. The KSB pump is default set as ModBus Address 17 The first Axial fan default set as ModBus 1. 2nd fan to 4, 3rd fan to 5. There are factory preset internally Bus values. NOTE : If more pumps (2) or fans (2 or 3) are present, additional addresses need to be assigned. The inverters VLT have address 2 and 3. The internal bus is able to read internal alarms, capacity, registers with consumed power, kwh, hours, Wattage and more data by the circulation pump, the axial fan and the inverters. All data is exchanged with the controller. VLT Danfoss by Modbus: Operating Time Running Hours kwh Counter Alarms Pump Pump status (0 = stop ; 1 = operation) (register 07 DA) Alarms (register 07 D0) o E01 Temperature limit exceeded o E02 Too high motor current o E03 Internal fault o E04 Rotor blocked o E05 Overloaded o E06 Supply power too high / low Actual Flow in m 3 /h * 10 (register 07 D4) Actual Pump load % (register 07 DE) Pump operation time in hrs (register 07 DA) Pump Power Watts read out (register 07 DC) Pump Power history in kwh (summation in time) Fan Alarms Actual speed in % or in (m3/h) Fan operation time Fan Power Watt Fan consumption kwh 49

50 10 Modbus externally 10.0 MODBUS EXTERNALLY Connect a suitable ModBus Cable directly to the RS485 Slave connector on the IPRO. Do Not connect it at the XK connecting board. External communication between the TripleAqua controller and any external BMS is possible using the ModBus RTU protocol. You can read and write to the device according to the list in Attachment A. Setting up communication: Please observe these setting parameters: ModBus Address IPRO (Default value): 100 (Preset - changeable over the web page) Communication parameters : Baud rate 9600, No parity, 8 data bits, 1 stop bit SEE APPENDIX A FOR THE FULL ModBus LIST. 50

51 11 Alarms 11.0 ALARMS The machine distinguishes PRE-ALARMS and ALARMS: PRE-ALARM in circuit A or B: the machine will continue operation of this circuit: DO 5 is active. ALARM in circuit A of B: the machine will stop the operation of this circuit : DO 8 is active. From all (pre-)alarms, events, reset and reboot an can be sent to preset addresses including a.txt file with the full history of alarms. Alarm Name Action Self reset Pre-Alarm / Alarm Low pressure (*) Lo-PresA Restart, if 5x in 1 hour alarm Yes first pre, then alarm Low pressure (*) Lo-PresB Restart, if 5x in 1 hour alarm Yes first pre, then alarm High pressure Hi-PresA Compressor A stop No, hand reset Alarm High pressure Hi-PresB Compressor B stop No, hand reset Alarm Pump Err-Pump Hele machine stop No Alarm, A&B stop Propæne leak GasAlarm Compressors stop No Alarm, A&B stop Axiaal fan op 40% Water pressure low WPresLow Full machine stop Yes Alarm, A&B stop Compressor ComprotA Compressor A stop Alarm, A stop protection A Compressor ComprotB Compressor B stop Alarm, B stop protection B Inverter Err-FrQA Compressor A stop No Alarm, A stop protection A Inverter Err-FrQB Compressor B stop No Alarm, B stop protection B Oil level CompoilA Compressor A stop Alarm, A stop protection A Oil level CompoilB Compressor B stop Alarm, B stop protection B Fan(s) Err-Fan1 Fan stop Yes Pre-Alarm Err-Fan2&3 Fan stop Yes Pre-Alarm Flow Flow_WHx WaterHx will not perform cooling depends No Alarm if flow pump test does not act properly it will cause PUMP test failed, NOTE: During a defrost session any report from a LP pressostat is ignored for a while. At normal operation, a LP report is acknowledged after 20 seconds. An active alarm can be looked up in these screens: 51

52 11 Alarms 11.1 PROBES ALARMS The analogue probes are checked in the PLC. Normal values are between -50 C and If RetuW-In defect: continue with last value : Pre-Alarm If Amb-Temp defect: continue with last value : Pre-Alarm If HotW-Out defect: continue with ConW-Out: Pre-Alarm If ConW-Out defect: continue with HotW-Out Pre-Alarm If both defect: Alarm If ColW-Out defect: continue with EvaW-Out: Pre-Alarm If EvaW-Out defect: continue with ColW-Out Pre-Alarm If both defect: Alarm If Air-HeXA defect and machine is in cooling: Pre-Alarm 52

53 11 Alarms If Air-HeXB defect and machine is in cooling : IfAir-HeXA defect and machine is in heating: IfAir-HeXB defect and machine is in heating: Machine can continue to produce cold water but will not perform a defrost Pre-Alarm Alarm / Pre-Alarm Alarm / Pre-Alarm Alarms at a defect Pt1000 probe. If one or more Pt1000 probes SuctAHxA, SuctAHxB, SuctWHxA, SuctWHxB are defect, the expansion valves cannot operate. So these probes will create an Alarm. Alarms at a defect pressure transducer. If one of the 6 PP11 of PP30 pressure transducers SucPAHxA, SucPAHxB, SucPWHxA, SucPWHxA, DisPresA or DisPresB are defect, the expansion valves or the condenser pressure control cannot operate properly. So these probes will cause Alarm. A delay of 15 sec will apply. NOT YET IMPLEMENTED No logic water temperatures on PHX Pre-Alarm if heat exchangers seem clogged if after 1 min in operation following values occur: : Temperature difference very high : ΔT between RetuW-in and/or EvapW-Out of ConW-Out (> 25 C) Temperature difference very small: ΔT between RetuW-in and/or EvapW-Out of ConW-Out (< 0,1 C) See also

54 11 Alarms 11.2 FROST ALARM If the probe EvaW-OUT < 3 C ( range from 0 C to 10 C), a frost risk occurs. Cooling by the evaporator PHX will be stopped immediately. After a hysteresis 2K the alarm is disabled automatically. A Frost alarm will occur if : The temperature from the probes in the water heat exchangers (CondW-Out, EvaW-Out, RetuW-in) drop lower than 4 C ( changeable between 0-10 C.) ÓR The mechanical frost thermostat on the water condensor creates alarm. If Frost alarm occurs, following actions are undertaken: 1) Exp valves Water Hx A (EE61) and Water Hx B (EE62) are closed 2) Liquid valves for Exp valves Water Hx A (EE61) and Water Hx B (EE62) are closed 3) Compressors stopped 4) Tracing activated (DO12) 5) Frost lamp activated 6) Open Bypass Cold water small and large and Bypass Hot Water valves 7) Pump forced to highest flow speed (10,0 Volt) If the probes has risen 3K in temperature, or the mechanical frost thermostat has no alarm anymore, the normal control of the machine can be performed. A Pre-Alarm remains active which has to be reset manually PROPÆN ALARM In the compressors cabinet, a leak detector is present to warn against possible leak of hydrocarbon refrigerant. HIGHLY FLAMMABLE REFRIGERANT SERIOUS RISK OF EXPLOSION If this alarm occurs, following actions are undertaken: 1) Machine is stopped. Cum. Alarm. 2) Yellow lamp goes on. GAS LEAK RELAIS activated too. 3) Compressor area DC 24V Fan activated to vent the gas away through the bottom a.s.a.p. 4) Axial fan ON at 40%, stops if this alarm is gone The alarm itself has to be reset manually. Beware of all safety precautions. 54

55 11 Alarms 11.4 PUMP ALARM The controls will attempt to solve flow and pump problems by resetting the pump three times and restarting it. If not successful, a Pump Alarm will occur. Needs a manual reset. Not yet over bus. The pump has an external alarm contact and reports problems on the pump display at the pump and over the internal bus too NOT YET IMPLEMENTED. Compressors are stopped if pump is in alarm. Alarms pump (register 07 D0) o E01 Temperature limit triggered o E02 Overcurrent o E03 Internal fault o E04 Rotor blocked o E05 Overloaded o E06 Power supply too high / too low 11.5 FLOW ALARM If the flow switch remains open for more than 300 sec, attempts to restore the flow have been unsuccessful. Both bypass valves and external bypass valves will remain activated. The XEV s are disabled and compressor(s) operation is stopped. A flow alarm is generated ALARM HOT / COLD WATER TEMPERATURE Alarm 57 (cold) and / or 58 (warm) are generated for external purposes if the controls detect that the actual values for COLDTEMP and / or WARMTEMP deviate more than 5 Kelvin from the set point lines for more than xx hours. It is a general alarm the machine is not able to reach the set points and it may need further investigation at the cause. 55

56 12 Software 12.0 SOFTWARE Software version screen This screen will show the actual version of the software loaded and the release date. 56

57 13 Inputs / Outputs 13.1 DIGITAL INPUTS 13.2 DIGITAL OUTPUTS 57

58 13 Inputs / Outputs 13.3 ANALOGUE INPUTS 13.4 ANALOGUE OUTPUTS 58

59 14 Hardware overview 14 HARDWARE OVERVIEW Main hardware components as are used in this machine are generally specified below. For more information, contact your local distributor or download more documentation at the manufacturer IPG215D CONTROLLER Programmable controller 10 DIN version with high speed performance 32-bit ARM9 (200 MHz) microprocessor. Capable to communicate together with CANBus, RS485 Master and RS 485 SLAVE, Ethernet, Modem and USB ports, providing maximum flexibility and integration with the outside world. Communication to the dedicated remote LCD display(s). MODBUS RTU protocol, the most popular in the world is used for serial communication. 80MB flash Memory inside with full configurable inputs and outputs. Log data will be lost in case of power failure. Specially designed for application in heat pumps and chillers. MODEL: Emerson Dixell type IPG 215D ETH + MDM -EXT 24V 59

60 14 Hardware overview 60

61 14 Hardware overview The controller is connected by connectors 61

62 14 Hardware overview Analogue inputs: Digital inputs: Analogue outputs: 62

63 14 Hardware overview Digital outputs: 14.2 EXPANSION VALVES CONTROLLER Stepper valve actuator Emerson Dixell type XEV 20D Designed to control two bipolar stepper valves, communicating over CAN bus serial line with IPRO controller. One controller serves two XEV valves per refrigeration circuit. Four analogue inputs PT1000. NOTE: The controller has to be addressed by dip. switches Set circuit A to ON-OFF-OFF-OFF. Set circuit B to OFF-ON-OFF-OFF. The bipolar expansion valves Alco EX5/6 are wired as below to the controller: W1 1: WHITE; 3: BLACK; W2 2: BROWN; 4: BLUE Power supply: 24V ac/dc max 40 VA Operating temperature: -10 C ~ + 60 C Resolution: 0.1 C 63

64 14 Hardware overview 14.3 REMOTE DISPLAY Emerson Dixell type: VGIPG-0P000 UC part.no.: Remote LCD display (FSTN) with 8 programmable buttons and white back light. Graphic resolution 240 x 96 dots. The connection between the controller and the remote display must be made using a BELDEN 8772 or equivalent cable (3xAWG20). Up to two remote displays can be connected to the controller as shown below. The distance between the controller and the last display must not exceed 100 meters. Do not mix the polarity of the connections as any error may damage the device FREQUENCY INVERTER CONTROLLER TripleAqua uses only original Danfoss VLT inverter controllers for refrigeration application. The VLT inverters are controlled by the 0-10V analogue outputs of the Dixell controller. In return, the internal bus gives back relevant data, errors, status, power consumption and energy information. 64

65 14 Hardware overview The technical documentation of this product is found on the internet. Various models of TripleAqua may use different VLT models. Refer to the Danfoss website and the specific model of VLT applied in the machine EC - FAN (S) The used EC motors are known for a very high degree of efficiency, also in part-load operational range as well as by an ideal steering mechanism and automatic control action. They are easy to connect, individually preconfigured, compact in construction and show a high power density. Implementation of additional functions (e. g. pressure- and volume-control) is done. The EC motors meet degree of protection class IP54; input voltage of 380V-480V (50/60Hz). EC motors are continuous speed controllable and have an integrated motor protection. The fan(s) motor speed is controlled over a 0 10V signal from the controller. Motor data such as speed, errors, status, power consumption and energy information is given back to the controller over the internal bus, is added in local memory and made available for external applications. Depending on the model, one of these fan(s) is applied. 65

66 14 Hardware overview Depending on the 3CA size, model AKFG1000 K.6IF or AKFG 1000 K.6NA fans are applied. More information over the operation of the ModBus of these fans can be found in Rosenberg documentation: BA601BB1112/A/02 66

67 14 Hardware overview 14.6 PUMP KSB CALIO SERIES. Type, size and model depending on TripleAqua central heat pump. Glandless, no self-priming in-line wet rotor pump, flanged, for handling clean fluids (water and water/glycol) which are neither chemically nor mechanically aggressive to the pump material. The high efficient EC motor and integrated continuously variable differential pressure control and software enables optimum adjustment to all changing operating conditions. The criteria for pressure control depend on the set of the operation mode, the pump adapts to the fluctuating demand. Automatic functions: output adjustment, various differential pressure control mode, Eco Mode, Dual pump control, Modbus, setback operation, external start-stop, de-blocking function, Self-Venting, soft start, full motor protection, fault messages. 67

68 14 Hardware overview NEVER operate the pump without liquid fill and water pressure. Risk of DAMAGE! The calculated flow rate ( in xx.x m3/h) and electrical input (in Watts) and calculated head pressure (in meters of Water) are shown as 3 digit numbers on the integrated display in a 5 second interval: shortly press the main button to activate this for a while. The performance setting ( in % ) is shown by 1 to 10 blue LED segments around the main button. By DIP Switch 1, the set-back function can be activated. (Switch in BOTTOM position) By DIP Switch 2, the control panel function can be locked. (Switch in TOP position) STANDARD SETTING: Proportional-pressure 0 10 Volt 68

69 14 Hardware overview RESET TO FACTORY SETTING: In case of problems, return to the factory setting: Press the control button for more than 30 sec. Now, proportional control, 50% set point, Baud rate, ModBus Address 17 is activated. BUT: DUAL, ModBus control, 0-10V functions will be disabled. Select 0-10V again for TripleAqua and confirm LEAK DETECTOR Every TripleAqua unit is standard equipped with internal leak detection. The NATURAL Refrigerant R433A Propæne is composed of 70% propane R290 and 30% propene R1270. Thus, the leak detector is specific selected to detect a propane leak. See specifications below: HIGHLY FLAMMABLE REFRIGERANT SERIOUS RISK OF EXPLOSION Local regulations may specify the procedure and frequency required. Requirements generally specify at least annual testing or calibration. Refer to Murco for instructions. Semiconductor sensors are non-selective, but calibrated to a specific gas. 69

70 14 Hardware overview 14.8 FLOW DETECTOR A flow detector is directly fitted to the inlet and the outlet of the water plate heat exchanger. When sufficient flow is passing the heat exchanger, a pressure drop will close the switch. If the flow drops below a threshold, the lower pressure drop will open the switch NTC THERMISTORS NTC-type temperature sensors used in the unit are of the same 10 C NTC BETA3435 type. Sensors made of black thermoplastic rubber case, cable-double insulation 2m lead 2x0.3mm2 wires. The performance is according to the NTC 103 AT K specification. Sensors are waterproof class IP68 with 1% tolerance. See the temperature-resistance graph. 70

71 14 Hardware overview PT1000 THERMISTORS The electronic expansion valve controllers are collecting the temperature date by PT1000 sensors, known for their accurate temperature measurement in applications superheating, an important temperature measurement application. The sensor unit consists of a platinum element the resistance value of which changes proportionally with the temperature. Pt 1000 ohm sensor (1000 ohm at 0 C). The sensors are adjusted and meet the tolerance requirements of EN Class B. The temperature resistance table is shown below: 71

72 14 Hardware overview PRESSURE TRANSDUCER High and low pressures are measured by 4-20mA pressure transducers, type PP11 and PP30. Dixell PP11-0,5 / 11bar 4-20mA 2 mtr Female Dixell PP30 0 / 30bar 4-20mA 2 mtr Female Pressure transducer supply a standard output current signal (4 20mA). The silicon sensor is assembled in a waterproof steel housing filled with oil that guarantees stable and constant measurement besides protection against vibrations and duration equivalent to millions of pressure cycles. The tip of the probe is made of 316L steel and this allows the probes to be placed in contact with all kinds of corrosive gases in general. 72

73 14 Hardware overview Accuracy Protection Operating temperature Power supply 1 % of full scale IP Vdc PRESSOSTATS The P100 pressostats are encapsulated, nonadjustable, direct mount pressure controls typically used for low and high-pressure cutouts for OEM applications. The P100 series are produced according to switch point requirements. The small dimensions, weight and protection class makes the P100 series applicable for use without the need of additional mounting brackets. All models use the same type of pressostats: LP JC P100AP-63D pressostat ¼"SAE close 1.52 barg, open 0.48 barg NO HP JC P100DA-51D pressostat ¼ SAE open 24,13 barg manual reset NC IN CASE OF HIGH PRESSURE ALARM: PRESS RED SWITCH MANUALLY A click can be felt to reset alarm Low pressure model High pressure model 73

74 Appendix A - Lists APPENDIX ALARM LIST 74

75 Appendix A - Lists APPENDIX MEASUREMENTS LIST X-Measurements Name UserAddress R/W schermtekst Uitleg AmbTemp 1007 R Ambient temperature Meetwaarde buitentemperatuur ingeval geen alarm voeler buitentemperatuur ColWOut 1002 R Cold water Outlet Meetwaarde temperatuur koud water uit HotWOut 1001 R Hot water Outlet Meetwaarde temperatuur warm water uit RetuWIn 1000 R Return water Inlet Meetwaarde temperatuur retour water in 75

76 APPENDIX PARAMETER LIST Appendix A - Lists X-Parameter Name UserAddress Kolom1 R/W schermtekst Uitleg buitentemp_max_koellijn_set R/W Outside temp for Maximum Setpoint cooling Buitentemperatuur voor hoogste setpunt koelen buitentemp_max_stooklijn_set 300C -120 R/W Outside temp for Maximum Setpoint heating Buitentemperatuur voor hoogste setpunt verwarmen buitentemp_min_koellijn_set R/W Outside temp for Minimun setpoint cooling Buitentemperatuur voor Laagste setpunt koelen buitentemp_min_stooklijn_set 300D 180 R/W Outside temp for Minimun setpoint heating Buitentemperatuur voor Laagste setpunt verwarmen HY_setpunt_koellijn 301D 10 R/W Hysteresis cooling Hysterese koelen HY_setpunt_stooklijn 301E 15 R/W Hysteresis Heating Hysterese verwarmen max_koellijn_set 300F 180 R/W Maximum setpoint cooling Hoogste setpunt koeling max_stooklijn_set 300A 380 R/W Maximum setpoint heating Hoogste setpunt verwarming min_koellijn_set R/W Minimum setpoint cooling Laagste setpunt koeling min_stooklijn_set 300B 280 R/W Minimum setpoint heating Laagste setpunt verwarming Mode_chiller R/W Current mode: Actuele mode van de unit; 0: standby; 1: enkel koelen; 2: enkel verwarmen; 3:auto 76

77 Appendix A - Lists APPENDIX STATUS LIST X-Status Name UserAddress R/W schermtekst Uitleg draaiuren_comp1 601C R Running hours A Waarde van draaiuren compressor circuit A draaiuren_comp2 601D R Running hours B Waarde van draaiuren compressor circuit B enable_koeling 301F R Status van de behoefte aan koud water enable_verwarming 3020 R Status van de behoefte aan warm water Err_Fan R Error Fan 1 Foutventilator 1 Err_Fan R Error Fan 2 Foutventilator 2 Err_Fan R Error Fan 3 Foutventilator 3 FanSpeed 971F R Fan speed Actuele snelheid ventilator Fanvermogen 1506 R Actueel opgenomen vermogen ventilator kwh_drivera 1604 R kwh counter A Kwh waarde van VLT op circuit A kwh_driverb 1605 R kwh counter B Kwh waarde van VLT op circuit B Pompbedrijfstijd 1502 R Operation time Bedrijfstijd pomp Pompcapaciteit 1500 R Capacity pump Actueel debiet pomp Pompsnelheid 167 R Speed pump Actuele snelheid pomp Pompvermogen 1503 R Power Actueel opgenomen vermogen pomp setpunt_koellijn 301A R Setpoint Heating Actueel setpunt stooklijn, setpunt warm water uit setpunt_stooklijn 3019 R Setpont Cooling Actueel setpunt koellijn, setpunt koud water uit FreqAB_totaal 201 R Actueel opgeteld toerental compressoren circuit A en B 77

78 Appendix A - Lists APPENDIX HARDWARE LIST Y-Hardware Name SingleTextLine UserAddress R/W schermtekst Uitleg AI01 Analog Input AI01 F000 R val/screen AI02 Analog Input AI02 F001 R val/screen AI03 Analog Input AI03 F002 R val/screen AI04 Analog Input AI04 F003 R val/screen AI05 Analog Input AI05 F004 R val/screen AI06 Analog Input AI06 F005 R val/screen AI07 Analog Input AI07 F006 R val/screen AI08 Analog Input AI08 F007 R val/screen AI09 Analog Input AI09 F008 R val/screen AI10 Analog Input AI10 F009 R val/screen AO01 Analog Output AO01 F020 R val/screen AO02 Analog Output AO02 F021 R val/screen AO03 Analog Output AO03 F022 R val/screen AO04 Analog Output AO04 F023 R val/screen AO05 Analog Output AO05 F024 R val/screen AO06 Analog Output AO06 F025 R val/screen DI01 Digital Input DI01 F050 R val/screen DI02 Digital Input DI02 F051 R val/screen DI03 Digital Input DI03 F052 R val/screen DI04 Digital Input DI04 F053 R val/screen DI05 Digital Input DI05 F054 R val/screen DI06 Digital Input DI06 F055 R val/screen DI07 Digital Input DI07 F056 R val/screen DI08 Digital Input DI08 F057 R val/screen DI09 Digital Input DI09 F058 R val/screen DI10 Digital Input DI10 F059 R val/screen DI11 Digital Input DI11 F05A R val/screen DI12 Digital Input DI12 F05B R val/screen DI13 Digital Input DI13 F05C R val/screen DI14 Digital Input DI14 F05D R val/screen DI15 Digital Input DI15 F05E R val/screen DI16 Digital Input DI16 F05F R val/screen DI17 Digital Input DI17 F060 R val/screen DI18 Digital Input DI18 F061 R val/screen DI19 Digital Input DI19 F062 R val/screen DI20 Digital Input DI20 F063 R val/screen RL01 Digital Output Relay RL01 F080 R val/screen RL02 Digital Output Relay RL02 F081 R val/screen RL03 Digital Output Relay RL03 F082 R val/screen RL04 Digital Output Relay RL04 F083 R val/screen RL05 Digital Output Relay RL05 F084 R val/screen RL06 Digital Output Relay RL06 F085 R val/screen RL07 Digital Output Relay RL07 F086 R val/screen RL08 Digital Output Relay RL08 F087 R val/screen RL09 Digital Output Relay RL09 F088 R val/screen RL10 Digital Output Relay RL10 F089 R val/screen RL11 Digital Output Relay RL11 F08A R val/screen RL12 Digital Output Relay RL12 F08B R val/screen RL13 Digital Output Relay RL13 F08C R val/screen RL14 Digital Output Relay RL14 F08D R val/screen RL15 Digital Output Relay RL15 F08E R val/screen 78

79 APPENDIX MEASUREMENT LIST Appendix A - Lists Y-Measurement Name UserAddress R/W schermtekst Uitleg AirHexA 1008 R Air Heat Exchanger A AirHexB 1009 R Air Heat Exchanger B BypCoWL 9709 R icon/screen BypCoWs 9708 R icon/screen BypHotW 9707 R icon/screen ConWOut 100A R Condensor Water Outlet DisPresA 1061 R Discharge Pressure A DisPresB 1062 R Discharge Pressure B DisTempA 1063 R DisTempB 1064 R EvaWOut 100B R Evaporator Water Outlet gemid_buitentemp 3008 R Average Temp Ambient gemid_retourtemp 198 R gemid_setpunt_koellijn 3013 R gemid_setpunt_stooklijn 300E R SucPAHxA 100C R Suction Pressure Air Heat Exch A SucPAHxB 100E R Suction Pressure Air Heat Exch B SucPWHxA 100D R Suction Pressure Water Heat Exch A SucPWHxB 100F R Suction Pressure Water Heat Exch B SuctAHxA 1003 R Suction Temp probe Air HX A SuctAHxB 1004 R Suction Temp probe Air HX B SucTempAHxA 9015 R SucTempAHxB 9016 R SucTempWHxA 8019 R SucTempWHxB 801A R SuctWHxA 1005 R Suction Temp probe Water HX A SuctWHxB 1006 R Suction Temp probe Water HX B 79

80 APPENDIX PARAMETER LIST Appendix A - Lists Y-Parameter Name UserAddress R/W schermtekst add_set_koellijn 8005 R/W Difference between averige temp add_set_stooklijn 7005 R/W Difference between amb set AFH 404A R/W val/screen AH1 402A R/W val/screen AH R/W val/screen AH R/W val/screen AH R/W val/screen AH R/W val/screen AH R/W val/screen AH R/W val/screen AH R/W val/screen AH17 405F R/W val/screen AH R/W val/screen AH2 402B R/W val/screen AH3 402C R/W val/screen AH4 402D R/W val/screen AH5 402E R/W val/screen AH6 402F R/W val/screen AH R/W val/screen AH R/W val/screen AH R/W val/screen AL1 403A R/W val/screen AL R/W val/screen AL R/W val/screen AL R/W val/screen AL R/W val/screen AL R/W val/screen AL R/W val/screen AL R/W val/screen AL17 405D R/W val/screen AL18 405E R/W val/screen AL2 403B R/W val/screen AL3 403C R/W val/screen AL4 403D R/W val/screen AL5 403E R/W val/screen AL6 403F R/W val/screen AL R/W val/screen AL R/W val/screen AL R/W val/screen 80

81 APPENDIX PARAMETER LIST Appendix A - Lists Y-Parameter Name UserAddress R/W schermtekst alarmwaarde_dt_hoog 182 R/W DT difference value HIGH alarmwaarde_dt_laag 183 R/W DT difference value LOW band_setpunt_koellijn 301C R/W AM/PM-correction COOLING band_setpunt_stooklijn 301B R/W AM/PM-correction HEATING begin_nacht_min 9603 R/W Begin night mode / min begin_nacht_uur 9602 R/W Begin night mode / hour buitentemp_max_maxout_cond 7020 R/W Upper limit outside temp for max output condensor buitentemp_max_maxout_evap 8025 R/W Upper limit outside temp for max output evaporator buitentemp_max_pstart_con_start 185 R/W buitentemp_min_maxout_cond 7021 R/W Lower limit outside temp for min output condensor buitentemp_min_maxout_evap 8024 R/W Lower limit outside temp for min output evaporator buitentemp_min_pstart_con_start 186 R/W cap_comp_cond 9714 R/W Decrease capacity comp condensor cap_comp_evap 9713 R/W Decrease capacity comp evaporator daaltijd 6037 R/W Decrease time defrost_capaciteit_circuit 503D R/W demping_freq_wijziging_init 170 R/W damping frequency increase draaitijd_olieretour 135 R/W drukval5s_reductie_compresssoren 178 R/W duur_watercirculatie 106B R/W Duration water circulation economy_fan 960B R/W Economy max Fan speed economy_freq_comp R/W Economy frequency comp 1 economy_freq_comp R/W Economy frequency comp 2 economy_keyboard_enabled 123 R/W Enable_economy_by_keyboard Economy_Modbus F160 R/W eind_nacht_min 9605 R/W End night mode / min eind_nacht_uur 9604 R/W End night mode / hour EvapstarttempEvaWOut R/W exclusion_band_end_1 971C R/W Exclusion band frequency compressor exclusion_band_end_2 971D R/W Exclusion band frequency compressor exclusion_band_end_3 971E R/W Exclusion band frequency compressor exclusion_band_start_ R/W Exclusion band frequency compressor exclusion_band_start_2 971A R/W Exclusion band frequency compressor exclusion_band_start_3 971B R/W Exclusion band frequency compressor 81

82 APPENDIX PARAMETER LIST Appendix A - Lists Y-Parameter Name UserAddress R/W schermtekst Freq_force_olieretour 133 R/W Comp speed for oil return freq_optoeren_comp_heating 173 R/W Enable frequency heating freq_optoeren_comp_normaal 174 R/W reg 2 comp/enable frequency freq_aftoeren_comp 6045 R/W freq_uitschakelen_comp 6038 R/W Disable frequency freq_bijschakelen_comp 603A R/W Enable frequency frost_lower_freq_comp 9715 R/W HY_add_set_koellijn 8006 R/W Band for ON/OFF Airheater evaporator HY_add_set_stooklijn 7007 R/W Band for ON/OFF Airheater condensor Hy_Pstop_condensor 181 R/W Hysterese STOP Condensor HY_setpunt_verdamper 8016 R/W Difference between amb set HY_stop_tracing 126 R/W HYS stop tracing HYPDfr 5010 R/W Pressure hysteresis to exit count phase interval_ac1 604E R/W Compr A stop/start interval_ac2 604F R/W Compr B stop/start interval_activeer_condensor 7008 R/W Delay to active condensor interval_activeer_verdamper 8007 R/W Delay to active evaporator interval_aftoeren_comp 6044 R/W val/screen interval_aftoeren_comp_booster 6060 R/W val/screen interval_ap1 605E R/W Compr A Min. Run time interval_ap2 605F R/W Compr B Min. Run time interval_bijschakelen_comp 603B R/W interval_decrease_cap_comp_cond 7012 R/W Interval to decrease capacity comp condensor interval_decrease_cap_comp_evap 8014 R/W Interval to decrease capacity comp evaporator interval_diffpresa 401B R/W interval_diffpresb 401C R/W interval_druiptijd 502F R/W Coil dripping time interval_extrafrequency 605B R/W Delay to activate boost frequency interval_fan_delay 5030 R/W Fan activation time interval_opnieuw_regelen 603F R/W Interval to restart regulation interval_optoeren_comp 6041 R/W val/screen interval_reg_buitentemp 3003 R/W interval_stap R/W Interval start regulation interval_stap1_ontdooiing 502D R/W Time to lower the capacity interval_stap3 603E R/W Interval to disable compressor interval_stap R/W interval_stap R/W Maximum duration at higher frequency interval_stap R/W Maximum duration at boost frequency interval_start_comp 602E R/W Interval start function interval_starten_olieretour 132 R/W interval start oilreturn interval_uitschakelen_comp 6039 R/W val/screen interval_watercirculatie 106A R/W Interval water circulation 82

83 APPENDIX PARAMETER LIST Appendix A - Lists Y-Parameter Name UserAddress R/W schermtekst lower_capaciteit_circuit R/W lower_capaciteit_circuit R/W lower_freq_comp1 603C R/W Frequency compressor 1 lower_freq_comp2 603D R/W Frequency compressor 2 lower_limit_buitentemp_koellijn 302F R/W lower_limit_buitentemp_stooklijn 302B R/W lower_limit_koellijn 302D R/W lower_limit_stooklijn 3029 R/W lower_speed_test_pump 134 R/W MailRecipient F113 R/W MailRecipient2 F114 R/W max_dispresa 1024 R/W Discharge Pressure A / max max_dispresb 1025 R/W Discharge Pressure B / max max_extra_freq_verwarming_comp 605D R/W Maximum boost frequency max_freq_koeling_comp 6042 R/W Maximum frequency cooling max_freq_verwarming_comp 6043 R/W Maximum frequency heating max_maxout_cond 701E R/W Upper limit max output condensor max_maxout_evap 8023 R/W Upper limit max output evaporator max_ontdooi_interval 5005 R/W Maximum defrost delay time max_pstart_con_start 187 R/W max_retour_laden_tank R/W max_sucpahxa 1028 R/W Suction Pres Air Heat Exch A /max max_sucpahxb 1029 R/W Suction Pres Air Heat Exch B / max max_sucpwhxa 102C R/W Suction Pres Water Heat Exch A / max max_sucpwhxb 102D R/W Suction Pres Water Heat Exch B / max max_temp_ontdooi_interval 5003 R/W Outside temp for max defrost delay MaxPresLo 4004 R/W MaxPresPropaan 3021 R/W MaxStepVal R/W MaxStepVal R/W MaxStepVal R/W MaxStepVal R/W maxtimedfr 503B R/W Max time defrost MaxVerdTemp 8017 R/W Maximum setpoint evaporator min_dispresa 1022 R/W Discharge Pressure A / min min_dispresb 1023 R/W Discharge Pressure B / min min_freq_cond 701D R/W min_maxout_cond 701F R/W Lower limit max output condensor min_maxout_evap 8022 R/W Lower limit max output evaporator min_ontdooi_interval 5006 R/W Minimum defrost delay time min_per_dag 3002 R/W Min_pomp_capaciteit_test R/W min_pstart_con_start 188 R/W min_retour_laden_tank R/W 83

84 APPENDIX PARAMETER LIST Appendix A - Lists Y-Parameter Name UserAddress R/W schermtekst min_start_temp_defrost_coil F142 R/W min_sucpahxa 1026 R/W Suction Pres Air Heat Exch A /min min_sucpahxb 1027 R/W Suction Pres Air Heat Exch B / min min_sucpwhxa 102A R/W Suction Pres Water Heat Exch A / min min_sucpwhxb 102B R/W Suction Pres Water Heat Exch B / min min_temp_evap 502E R/W Min temp evap defrost min_temp_ontdooi_interval 5002 R/W Outside temp for min defrost delay min_waarde_reg_colwout_evawout R/W Min_Wflow_cap_ctrl 177 R/W MinDiffPres 3025 R/W Minfreqolieretour 130 R/W Min frequency start counter oilreturn Minimale_circulatie_pomp_vr_comp R/W MinOut_cond 7018 R/W Minimum output condensor MinOut_evap 801E R/W Minimum output evaporator MinPresCond 7014 R/W Minimum Pressure condensor MinPresPropaan 3022 R/W MinSuctP_voor_directe_ontdooiing R/W MintempEvaWOutstarttracing 124 R/W Min evap water temp to start tracing Mintempstarttracing 125 R/W Min outdoor temp to start tracing OT R/W Ambient temperature / cal OT R/W val/screen OT R/W Return water Inlet / cal OT R/W Hot water Outlet / cal OT R/W Cold water Outlet / cal OT R/W Air Heat Exchanger A / cal OT R/W Air Heat Exchanger B / cal OT R/W Condensor Water Outlet / cal OT R/W Evaporator Water Outlet / cal OT R/W val/screen P_max_verdamper R/W P_min_start_verdamper R/W PdynDefC R/W PdynDefV 163 R/W Suction pressure to start def counter PeakCurrVal R/W PeakCurrVal R/W PeakCurrVal3 900A R/W PeakCurrVal4 900B R/W periode R/W periode R/W periode R/W periode R/W 84

85 APPENDIX PARAMETER LIST Y-Parameter Appendix A - Lists Name UserAddress R/W schermtekst polariteit_compoila 1051 R/W Polarity digital input/motor oil protection A polariteit_compoilb 1052 R/W Polarity digital input/motor oil protection B polariteit_comprota 1043 R/W Polarity digital input/motor protection A polariteit_comprotb 1044 R/W Polarity digital input/motor protection B polariteit_err_fan1 104B R/W Polarity digital input/error Fan 1 polariteit_err_fan2 104C R/W Polarity digital input/error Fan 2 polariteit_err_fan3 104D R/W Polarity digital input/error Fan 3 polariteit_err_frqa 1049 R/W Polarity digital input/error Frequency Converter A polariteit_err_frqb 104A R/W Polarity digital input/error Frequency Converter B polariteit_err_pump 104E R/W Polarity digital input/error Pump polariteit_flow_switch 137 R/W polariteit_frost 1042 R/W Polarity digital input/frost polariteit_gasalarm 104F R/W Polarity digital input/gas Alarm polariteit_hi_presa 1047 R/W Polarity digital input/high pressure pressostat A polariteit_hi_presb 1048 R/W Polarity digital input/high pressure pressostat B polariteit_lo_presa 1045 R/W Polarity digital input/low pressure pressostat A polariteit_lo_presb 1046 R/W Polarity digital input/low pressure pressostat B polariteit_wpreslow 1050 R/W Polarity digital input/water Pressure Low Pompmultiplier_eco 1509 R/W Pompsetpoint 1508 R/W setpoint pump standard Pompsetpoint_standby 168 R/W setpoint pump standby Pompsetpoint_tanks_laden 169 R/W setpoint pump charging tanks Prop_cond 7016 R/W Proportionel output condensor Prop_evap 801C R/W PB regulation airheat evap PstopDfr 503A R/W End defrost high pressure PSucFall R/W registratieinterval F116 R/W rtr_cold 8001 R/W % Averige ColWOut and EvaWOut rtr_colw R/W rtr_hot 7001 R/W % Averige HotWOut and ConWOut rtr_hotw R/W SetColWTank 9501 R/W Setpoint Cold Water Tank SetHotWTank 9500 R/W Setpoint Hot Water Tank setpunt_cond 7013 R/W setpunt_xevahxa 901C R/W setpunt_xevahxb 901E R/W setpunt_xevwhxa 901D R/W setpunt_xevwhxb 901F R/W Start_DT_AMB_COIL 189 R/W start_freq_comp R/W start frequency compressor start_freq_comp R/W start frequency compressor stijgtijd 6036 R/W Increase time Tdiff_activate_extrafrequency 605C R/W Tdiff HotWOut Tijd_Pomp_test R/W ToutFanDfr 503C R/W Min ambient temp for defrost TstartDfr 5031 R/W Temperature threshold to start defrost TstopDfr 5011 R/W End defrost aircoil temperature upper_limit_buitentemp_koellijn 302E R/W Upper limit outside temp for setpoint cooling upper_limit_buitentemp_stooklijn 302A R/W Upper limit outside temp for setpoint heating upper_limit_koellijn 302C R/W Upper limit setpoint cooling upper_limit_stooklijn 3028 R/W Upper limit setpoint heating Verschil_fout_geen_extra_demping 171 R/W DELTA TO START PI DAMPING 85

86 Appendix A - Lists APPENDIX STATUS LIST Y-Status Name UserAddress R/W schermtekst bedrijfsmodus R beperkte_vraag_gebouw R CompoilA 103F R CompoilB 1040 R comprota 102F R comprotb 1030 R DAG 2004 R DisValveA 9702 R DisValveB 9703 R Economy 103E R Economy enable_comp R icon/screen enable_comp R icon/screen enable_condensor 7006 R icon/screen enable_evaporator 8012 R icon/screen enable_laden_tank R enable_ontdooiing R enable_ontdooiing R enable_verdamper 8018 R enable_xevahxa 9020 R enable_xevahxb 9022 R enable_xevwhxa 9021 R enable_xevwhxb 9023 R EnabUnit 103D R Enable Unit Err_FrQA 1035 R Err_FrQB 1036 R Err_Gasalarm 103B R Err_Pump 103A R Err_WPresLow 103C R Flow_pomp_over_PWW_OK R frost 102E R FrQHzA 970F R FrQHzB 9710 R Gasalarm 401F R Hi_PresA 1033 R Hi_PresB 1034 R JAAR 2003 R kwh_totaal 199 R kwh total KWH_teller_pomp F180 R energy/pump KWH_teller_fan F181 R energy/fan Lo_PresA 1031 R Lo_PresB 1032 R MAAND 2005 R 86

87 Appendix A - Lists APPENDIX STATUS LIST Y-Status Name UserAddress R/W schermtekst Uitleg ManualdefrostA F140 R Request manual defrost circuit A ManualdefrostB F141 R Request manual defrost circuit B MINUUT 2002 R Mode_auto 1069 R Mode_cooling 1067 R Mode_heating 1068 R Mode_standby 1066 R OILHEATA 9700 R OILHEATB 9701 R OPE_XEVAHxA 9031 R OPE_XEVAHxB 9032 R OPE_XEVWHxA 9033 R OPE_XEVWHxB 9034 R operation_time 3027 R pompinput_alarm 166 R PompLast 1504 R Pompopvoerhoogte 1507 R Pompstatus 1501 R Probleem_flow_PWW R Pstart_condensor 180 R P START condensor SHXEVAHxA 9017 R SHXEVAHxB 901A R SHXEVWHxA 9018 R SHXEVWHxB 901B R stap 602A R stap_cond 700C R intern stap_evap 8013 R intern stap_freq1 161 R intern stap_freq2 162 R intern stap_ontdooiing R intern stap_ontdooiing R intern starts_drivera 1606 R starts_driverb 1607 R step_comp R intern step_comp2 605A R intern SucValveA 9704 R SucValveB 9705 R TracingP 970D R icon/screen UUR 2001 R versie 139 R 87

88 Appendix A - Lists APPENDIX XEV LIST Y-XEV Name UserAddress Kolom1 R/W schermtekst Uitleg HoldCurrVal R/W HoldCurrVal R/W HoldCurrVal R/W HoldCurrVal R/W Int_XEVAHxA R/W Int_XEVAHxB R/W Int_XEVWHxA R/W Int_XEVWHxB R/W MOP_XEVAHxA 902C 100 R/W MOP_XEVAHxB 902E 100 R/W MOP_XEVWHxA 902D 100 R/W MOP_XEVWHxB 902F 100 R/W Prop_XEVAHxA R/W Prop_XEVAHxB 902A 20 R/W Prop_XEVWHxA R/W Prop_XEVWHxB 902B 20 R/W StepRateVal1 900C 20 R/W StepRateVal2 900D 20 R/W StepRateVal3 900E 20 R/W StepRateVal4 900F 20 R/W ValveType R/W ValveType R/W 88

89 Appendix A - Lists APPENDIX ALARMLIST NUMBERS ON SCREEN AND BY TEXT MESSAGE ALARM NR SCREEN ALARM DESCRIPTION 2 AlarmPb1 [2] :=' Error probe amb temp'; 3 AlarmPb2 [3] :=' Error probe return water In'; 4 AlarmPb3 [4] :=' Error probe Hot W in'; 5 AlarmPb4 [5] :=' Error probe Cold W in'; 6 AlarmPb5 [6] :=' Error probe Air Hex A'; 7 AlarmPb6 [7] :=' Error probe Air hex B'; 8 AlarmPb7 [8] :=' Error probe Cond W out'; 9 AlarmPb8 [9] :=' Error probe Evap W out'; 10 AlarmPb9 [10] :=' Error probe Dis pres A'; 11 AlarmPb10 [11] :=' Error probe Dis pres B'; 12 AlarmPb11 [12] :=' Error probe temp AHX A'; 13 AlarmPb12 [13] :=' Error probe temp WHX A'; 14 AlarmPb13 [14] :=' Error probe suc AHX A'; 15 AlarmPb14 [15] :=' Error probe suc WHX A'; 16 AlarmPb15 [16] :=' Error probe temp AHX B'; 17 AlarmPb16 [17] :=' Error probe temp WHX B'; 18 AlarmPb17 [18] :=' Error probe suc AHX B'; 19 AlarmPb18 [19] :=' Error probe suc WHX B'; 20 alarm_lo_presa [20] :='LP alarm A'; 21 alarm_lo_presb [21] :='LP alarm B'; 22 alarm_hi_presa [22] :='HP alarm A'; 23 alarm_hi_presb [23] :='HP alarm B'; 24 alarm_frost [24] :='Frost alarm'; 25 alarm_gas [25] :='Gas alarm'; 26 alarm_pump [26] :='Pump alarm'; 27 alarm_wpreslow [27] :='Alarm Water pressure too low'; 28 alarm_comprota [28] :='Compressor prot alarm A'; 29 alarm_comprotb [29] :='Compressor prot alarm B'; 30 alarm_compoila [30] :='Compressor oil alarm A'; 31 alarm_compoilb [31] :='Compressor oil alarm B'; 32 alarm_frqa [32] :='Compressor VLT alarm A'; 33 alarm_frqb [33] :='Compressor VLT alarm B'; 34 alarm_diffpresa_tosmall [34] :='Alarm diff Pres A too small '; 35 alarm_diffpresb_tosmall [35] :='Alarm diff Pres B too small '; 36 alarm_out_range_propaana [36] :='Alarm_out_range_propaeneA'; 37 alarm_out_range_propaanb [37] :='Alarm_out_range_propaeneB'; 38 reset [38] :='Reset'; 39 reset_web [39] :='Reset_web'; 40 alarm_5_x_ld_alarma [40] :='5 x LP alarm last hour A'; 41 alarm_5_x_ld_alarmb [41] :='5 x LP alarm last hour B'; 42 Alarm_LD_A_5Min [42] :='LP alarm during more than 5MIN A'; 43 Alarm_LD_B_5Min [43] :='LP alarm during more than 5MIN B'; 44 alarm_diffpresa_tosmall_5x [44] :='5 x alarm Pres A diff too small '; 45 alarm_diffpresb_tosmall_5x [45] :='5 x alarm Pres B diff too small '; 46 evaporator problem_flow_pw [46] :='Evaporator problem flow switch at pum 47 DT_PHX_COND [47] :='no logic_ temp_phx_condensor'; 48 DT _PHX_EVAP [48] :='no logic_temp_phx_evaporator'; 50 Err_Fan1 [50] :='Error Fan1'; 51 Err_Fan2 [51] :='Error Fan2'; 52 Err_Fan3 [52] :='Error Fan3'; 56 Flow_alarm_PHX [56] :='Flow alarm over PHX evaporator'; 57 Alarm_ColW_temp [57] :='Alarm COLD Water temperature'; 58 Alarm_HotW_temp [58] :='Alarm HOT Water temperature'; 59 modbus_alarm [59] :='Modbus_ problem'; 89

90 Appendix B Propæne 10 strong point of Propæne Natural refrigerant (propane/propylene) Zero Ozone Depletion Potential Ultra low GWP =3 Strong distinctive natural SMELL Near Azeotrope (glide ± 0,4 K) Very efficient in particular at negative temp. Low discharge temperature % lower charge than H(C)FC Suitable for mineral and most synthetic oil types Pressure-Temperature almost identical to R22 Hydrocarbons are energy-efficient and climate-friendly refrigerants with limited impact on global warming, and no impact on the ozone layer. Hydrocarbons have been used in household refrigeration and some special applications for many years, and are now entering other applications, for instance display cabinets and large chillers. Since hydrocarbons are flammable, safety always needs to be considered when designing, building and servicing systems. Hydrocarbon refrigerants have a strong potential for retrofit and new low GWP HVAC&R applications. Propane and propylene are natural refrigerants, widely used with over 100 years of experience. This refrigerant propæne (R433A) has a full ASHRAE classification and combines the advantages of its both basic components. Important: Propæne has a strong distinctive smell. It adds up to the safety and handling issues of hydrocarbon gases. 90

91 Appendix B Propæne The refrigerant is almost azeotrope. Over the whole temperature range a negligible glide of 0.35 to 0,4K occurs. Studies show that R433A equals or outperforms to R22 in capacity while COP increases 5 to 16%. Additional heat exchange increasing liquid subcooling and suction gas superheat adds up to the performance. The compressor enjoys a pleasant low discharge temperature, even at high superheat and freezing applications. Hydrocarbons reduce the charge of the system by more than 50%, resulting in considerable low refrigerant need. Note Relative Density at 15 C. 0,516 Kg/lt Vapor Pressure at 20 C. 7,92 / 8,01 bar/rel Total Sulfur < 1,00 mg/kg Water Content 5,00 mg/kg GAS CHROMATOGRAPHY Propylene Propane Propylene + Propane 29,90 % 69,90 % 99,80 % vv vv vv GAS CHROMATOGRAPHY Ethane Ethylene Butanes Butenes Pentanes Pentenes < 5 < 5 < 5 < 5 < 5 < 5 umoli/moli umoli/moli umoli/moli umoli/moli umoli/moli umoli/moli Butadiene < 5 umoli/moli Major Hazards UN Number UN 3161 CAS Number / Hydrocarbon refrigerants possess full chemical compatibility with nearly all lubricants commonly used within refrigeration systems. Good miscibility is maintained with most lubricants under all operating conditions. Due to the particularly good solubility with mineral oils, it may be necessary to use a lubricant with lower solubility or increased viscosity to compensate for possible thinning under situations where high solubility could occur. Suppliers should be consulted for properties of oil/refrigerant combinations. Lubricants containing silicone or silicate (often used as anti-foaming additives) are not compatible with hydrocarbon refrigerants and should not be used. If changing or selecting a lubricant for a hydrocarbon refrigerant application, always consult the compressor manufacturer as to their recommendations. Table details the various lubricants and their compatibility characteristics. 91

92 Appendix B Propæne Virtually all common elastomer and plastic refrigeration materials used as O rings, valve seats, seals and gaskets are compatible with hydrocarbon refrigerants. These include Neoprenes, Vitons, Nitrile rubbers, HNBR, PTFE and Nylon. Materials that are not compatible and should not be used in hydrocarbon refrigeration systems are EPDM, natural rubbers and silicone rubbers. A (domestic/public) Hospitals, prisons, theatres, schools, supermarkets, hotels, dwellings. B Offices, small shops, restaurants, (commercial/private) places for general manufacturing and where people work. C Cold stores, dairies, abattoirs, nonpublic areas of supermarkets, plant (industrial/restricted) rooms. <1.5kg per sealed system <5kg in special machinery rooms or in the open air for indirect systems <2.5kg per sealed system <10kg in special machinery rooms or open air for indirect systems. <10kg in human occupied spaces <25kg if high pressure side (except air cooled condenser) is located in a special machinery room or in the open air No limit if all refrigerant is contained in a special machinery room or in the open air. Refrigerant charge Hydrocarbons have smaller density than the halocarbons and hence the amount of charge decreases significantly with hydrocarbons R433A showed a decrease in charge of % as compared to HCFC22. This will help alleviate further the direct emission of refrigerant which is responsible for the greenhouse warming. The blend composes of pure propane and propylene (70/30) having very identical physical and chemical properties. The refrigerant has flammability class A3. The properties of R433A is fully listed in EN3781 table E.2. The LFL and practical limit is very close to propane. R433A is not toxic. So, behavior of R433A does not differ to the basic components, resulting in stable and reliable performance. The pressure-temperature behavior is very close to R22, many components, selections, calculations and materials can be applied in a similar way. 92

93 Appendix B Propæne 93

94 Notes 94

95 Notes 95

96 Installer / Distributor For more information, visit 96