ISO 9001 : 2000 CERTIFIED COMPANY. Sime SUB HE-DHW

Transcription

1 ISO 9001 : 2000 CERTIFIED COMPANY UK Sime SUB HE-DHW

2 SAFE HANDLING This Substation may require 2 or more operatives to move it into its installation site, remove it from its packaging and during movement into its installation location. Manoeuvring the boiler may include the use of a sack truck and involve lifting pushing and pulling. Caution should be exercised during these operations. Operatives should be knowledgeable in handling techniques when performing these tasks and the following precautions should be considered: Grip the boiler at the base Be physically capable Use personal protective equipment as appropriate e.g. gloves, safety footwear. During all manoeuvres and handling actions, every attempt should be made to ensure the following unless unavoidable and/or the weight is light. Keep back straight Avoid twisting at the waist Always grip with the palm of the hand Keep load as close to the body as possible Always use assistance WARNING Caution should be exercised when performing any work on this appliance. Protective gloves and safety glasses are recommended. Avoid direct contact with sharp edges. Avoid contact with any hot surfaces. NOTICE Please be aware that due to the wet testing of the appliance, there may some residual water in the hydraulic circuit. Protect any surfaces, carpets or floorings. Use a suitable container to catch any water that escape when removing the protective caps from the connections. KEY SYMBOLS Warning, generic danger and important notes. Don t touch, hot sufrace! Danger of burns! Dont t touch! Danger of shock!

3 INSTALLER INSTRUCTIONS CONTENTS INSTALLER INSTRUCTION 1.0 SUPPLY DESCRIPTION OF THE SUBSTATION INTRODUCTION DIMENSION TECHNICAL FEATURES PERFORMANCE FUNCTIONAL DIAGRAM MAIN COMPONENTS INSTALLATION POSITIONING THE SUBSTATION THE DIFFERENTIAL PRESSURE REGULATION FITTING SYSTEM FILLING FILLING LOOP EMPYTING THE SUBSTATION ELECTRICAL WIRING START UP SUBSTATION SETTING ENERGY METER MAIN INFORMATION TECHNICAL DATA OF HEAT COUNTER START UP DISPLAY SET UP DISPLAY ERROR CODES COMMUNICATION HEAD AVAILABLE TO SYSTEM USE AND MAINTENANCE DISASSEMBLING THE SHELL MAINTENANCE FUNCTIONING ERRORS...22 USER INSTRUCTIONS 1.0 STARTING AND OPERATION INITIAL CONTROL PANEL WINTER/SUMMER SWITCH REGULATION WATER TEMPERATURE...25 CERTIFICATIONS

4 IMPORTANT! The temperature and pressure of the district heating water is very high. Only qualified technicians are allowed to work with the district heating substation. Incorrect operation may cause serious personal injury. SIME LTD will not be responsible for any injury or damage to persons or property due to incorrect installation or use. Parts of the Sime Sub HE/DHW may get very hot and should not be touched. This manual is part of the substation. It must be left with the unit on completion of the installation. 4

5 1. SUPPLY 1 PACKAGING 485x815x307 1 SUBSTATION 1 SUBSTATION CASING GUARANTEE sime limited 4 VALVES 3/4 2 VALVES 1/2 1 GUARANTEE 1 TEMPLATE Fig DESCRIPTION OF THE SUBSTATION 2.1 INTRODUCTION The Sime Sub HE/DHW are a heating substations suitable for apartments and single-family houses that are directly or indirectly connected to a heating network. Easy to install! Installation is very easy. All internal wiring is factory fitted and the plumbing is well arranged. Thanks to its compact size and low weight, the unit is convenient to fit into limited space. In new buildings, it demands less space than traditional substations. It can also be connected to low temperature heating systems. The substation has two thermostatic mixing valves that supply the required temperatures for central heating and domestic hot water. Domestic hot water is heated separately in a high-capacity heat exchanger. The Sime Sub HE/DHW meets stringent demands for long-term performance. The heat exchanger plates are manufactured in acid-resistant stainless steel. All components are easily accessible for inspection and service. 5

6 2.2 DIMENSIONS FRONT SIDE REAR H.S. H.R. H.M.R. H.M.S. H.W.O. C.W.I. KEY: H.S. H.R. H.M.R. H.M.S. H.W.O. C.W.I. Heating supply Heating return Heating Media return (District heating) Heating Media supply (District heating) Hot water outlet Cold water inlet 22 mm COMPRESSION 22 mm COMPRESSION 22 mm COMPRESSION 22 mm COMPRESSION 15 mm COMPRESSION 15 mm COMPRESSION TOP Fig. 2 6

7 2.3 TECHNICAL FEATURES GENERAL SIME SUB HE/DHW 12/40 SIME SUB HE/DHW 12/60 Code number Residual head with 700 l/h (CH) kpa 22,1 22,1 Supply voltage Volt Supply frequency Hz Net weight substation kg 32 32,3 Water filled weight substation kg 35,1 35,9 Minimum head input kpa 39,2 (at 1250 l/h) 26,5 (at 1000 l/h) 39,2 (at 1250 l/h) 26,5 (at 1000 l/h) Work pressure kpa 14,7 (at 1250 l/h) 9,8 (at 1000 l/h) 14,7 (at 1250 l/h) 9,8 (at 1000 l/h) Maximum pressure network bar Maximum P motorized two way valve (CH and DHW primary circuit) bar 3,5 3,5 OPERATION DATA Heating network Maximum static operation pressure bar Maximum temperature C Volume l 1,2 1,3 Heating circuit Temperature range C Maximum pressure bar 2,5 2,5 Relief valve opening pressure bar 3 3 Volume l 1,05 1,05 Expansion vessel volume l 8 8 Hot water circuit Maximum/minimum pressure bar 7/0,5 7/0,5 Temperature range C Volume 0,82 0,95 CONNECTIONS Heating media supply (District heating) 3/4 3/4 Heating media return (District heating) 3/4 3/4 Heating supply 3/4 3/4 Heating return 3/4 3/4 Cold water 1/2 1/2 Hot water 1/2 1/2 Tab. 1 7

8 2.4 PERFORMANCE PERFORMANCE Head (kpa) C.H. water flow (l/h) 700,0 700,0 700,0 700,0 700,0 700,0 SIMESUB 12/40 SIMESUB 12/60 C.H. CIRCUIT T OUT T IN Τ Heating water flow (l/h) 60,0 60,0 57,0 60,0 60,0 60,0 45,0 45,0 45,0 45,0 45,0 45,0 15,0 15,0 12,0 15,0 15,0 15, NETWORK T S 85,0 80,0 70,0 85,0 80,0 70,0 T R 71,0 66,0 58,5 74,5 69,5 59,5 Head (kpa) Heating water flow (l/min) 14,0 14,0 14,0 14,0 14,0 14,0 14,0 14,0 14,0 D.H.W. CIRCUIT T OUT T IN 57,0 55,0 55,0 55,0 55,0 50,0 53,5 50,0 45,0 10,0 10,0 10,0 10,0 10,0 10,0 10,0 10,0 10,0 SIMESUB 12/40 Τ 47,0 45,0 45,0 45,0 45,0 40,0 43,5 40,0 35,0 Heating water flow (l/h) NETWORK T S 85,0 85,0 85,0 80,0 80,0 80,0 70,0 70,0 70,0 T R 51,3 47,0 34,5 47,0 42,0 35,0 38,0 36,0 31,0 Heating water flow (l/min) 20,0 20,0 20,0 20,0 20,0 20,0 20,0 20,0 20,0 D.H.W. CIRCUIT T OUT T IN 55,0 55,0 45,0 55,0 51,5 42,5 47,0 45,0 40,0 10,0 10,0 10,0 10,0 10,0 10,0 10,0 10,0 10,0 SIMESUB 12/60 Τ 45,0 45,0 35,0 45,0 41,5 32,5 37,0 35,0 30,0 Heating water flow (l/h) NETWORK T S 85,0 85,0 85,0 80,0 80,0 80,0 70,0 70,0 70,0 T R 38,0 31,0 29,0 33,0 30,0 28,0 31,5 28,0 22,5 Tab. 1/a 8

9 2.5 FUNCTIONAL DIAGRAM HS HR HMR HMS HWO CWI KEY 1 Filling loop 2 Circulation pump 3 Motorized two way valve (CH primary circuit) 4 Heating thermostatic mixing valve 5 Differential pressure regulator 6 Heating circuit filter 7 Heat counter 8 Temperature and pressure gauge 9 Valves 3/4 10 Valves 1/2 11 Heating Media supply filter (District heating) 12 Domestic hot water flow switch 13 Heat counter temperature sensor 14 Differential pressure regulator capillary 15 Domestic hot water thermostatic mixing valve 16 Motorized two way valve (DHW primary circuit) 17 Expansion vessel 18 DHW plate exchanger 19 CH plate exchanger 20 Drain valve 21 3 bar heating system pressure relief valve 22 Room thermostat CONNECTIONS HS Heating supply HR Heating return HMR Heating media return (district heating) HMS Heating media supply (district heating) HWO Hot water outlet CWI Cold water inlet Fig. 3 9

10 2.6 MAIN COMPONENTS FRONT VIEW REAR VIEW KEY 1 Control panel 2 Circulation pump 3 Motorized two way valve (CH primary circuit) 4 Heating thermostatic mixing valve 5 Differential pressure regulator 6 Heating circuit filter 7 Heat counter 8 Temperature and pressure gauge 9 Valves 3/4 10 Valves 1/2 11 Heating Media supply filter (District heating) 12 Domestic hot water flow switch 13 Filling loop 14 Differential pressure regulator capillary 15 Domestic hot water thermostatic mixing valve 16 Motorized two way valve (DHW primary circuit) 17 Expansion vessel 18 DHW plate exchanger 19 CH plate exchanger 20 Drain valve 21 3 bar heating system pressure relief valve 22 Heat counter temperature sensor Fig 4 10

11 3. INSTALLATION 3.1 POSITIONING THE SUBSTATION Unpack the substation, ensure that the contents are as specified. If the substation is damaged, do not install it and contact the supplier. When lifting or maneuvering the substation do not do so by holding the internal components. NOTE: Please see the handling notice, enclosed in this manual. Ensure that the installation position is suitable to support the weight of the substation and conforms to any current regulations. The system may generate noise during operation, and this should be considered when siting the substation. The installation and commissioning must only be done by suitably qualified personnel. Check the applicable regulations of the district heating supplier. The minimum head input is shown in Tab.1 pag The differential pressure regulator The differential pressure regulator keeps the difference in pressure found in two points of a hydronic circuit at a constant level, corresponding to the set value. The device is inserted in the circuit return pipe and is connected, by way of a capillary pipe, to the flow pipe. It is used in variable flow rate systems, with motorised valves, to limit the increases in differential pressure that are created when these valves are closed, either totally or partially. The action of the device is proportionate to the variation in differential pressure that is created, to restore the p conditions set. OPERATION DATA Maximum pressure bar 16 Maximum differential pressure bar 2 Minimum temperature (water) C 2 Minimum temperature (water with antifreeze) C -20 Maximum temperature C 100 Regulation field kpa 5-30 CHARACTERISTICS The differential pressure regulator is calibrated and sealed at factory: the value for Simesub HE/DHW 12/40 and Simesub HE/DHW 12/60 is 4; can be adjusted to the desired value by only qualified SIME technicians with graph in fig. 5. Presetting 1,0-7,5 Dp [mbar] Flow rate [l/h] Fig. 5 11

12 3.1.2 Fitting Follow the steps listed below: 1) Flush out the heating and hot water systems. 2) Figure 2 shows the positions of the fixing holes, and the connections. Mount the substation with suitable fixings. 3) Fit the isolation valves using the washers provided (fig. 6). 4) Connect to the hydraulic system, ensuring correct orientation. Fig SYSTEM FILLING All recirculatory systems will be subject to corrosion unless an appropriate water treatment is applied. This means that the efficiency of the system will deteriorate as sludge accumulates within the system, risking damage to the pump and valves and causing noise and circulatory problems. For optimum performance after installation this substation and its associated heating systems must be flushed in accordance with BS 7593 Treatment of water in domestic hot water central heating systems. SIME Ltd recommend only the use of FERNOX products for the flushing and final treatment of the system water. It is also recommended that the inhibiter concentration is checked after installation, system modification, and at regular intervals(annually). Failure to flush and add inhibiter to the system may invalidate the warranty. Artificially softened water must not be used to fill the heating system Filling loop 12 The filling loop is used to fill the central heating system(hr/hs) by opening the isolation valves see fig 7. Follow the steps listed below: 1) Connect the filling loop as shown in fig 7, ensuring that the connections are tight. 2) Fully open one of the isolation valves. Slowly open the second isolation valve and fill the central heating system (fig. 7). 3) Check for leaks. Ensure that all the radiators are vented. Continue to fill the system until the pressure is between 1 and 1.2 bar. 4) When the correct pressure achieved, turn off both isolation valves. Carefully disconnect the filling loop, be prepared to capture water that will be lost from the disconnected loop.

13 The charge pressure, with the system cold, must be between 1 and 1.2 bar. Filling must be done slowly so as to allow any air to be bled off through the air vents. Let the heating system heat up and deaerate the system again with the circulation pump shut down. Should the pressure have risen well above the limit expected, discharge the over pressure by opening the manual drain valve, item 20 fig Fig Emptying the Substation Turn off the substation electrical supply. Close the isolation valves. Connect a pipe to the drain valve (item 20 fig 4). open the drain valve to empty the system. 3.3 ELECTRICAL WIRING Sime Sub HE/DHW is supplied with an electric cable. Should this require replacement, it must be purchased exclusively from SIME. The electric power supply to the substation must be 230V - 50Hz single-phase through a fused main switch, fitted with a 3 A fuse, with at least 3 mm spacing between contacts. Respect the L and N polarities and the earth connection. This must be carried out by a qualified electrician.the wiring conforms to the applicable rules for CE marking and has undergone electrical safety testing and function testing. NOTE: SIME declines all responsibility for injury or damage to persons, animals or property, resulting from the failure to provide for proper earthing of the appliance. ATTENTION: Before any work is done on the substation, it must be isolated from the power supply by turning off at the external switched supply. 13

14 7 MSW FA VCH P VDHW BROWN BLUE BLACK WHITE RED BLUE GREY BROWN BLACK BROWN BLACK BLUE WSS W S L N L N MS OP RT LCH LDHW FL KEY MSW ON-OFF SWITCH WSS WINTER/SUMMER SWITCH MS MAIN SUPPLY FA FUSE 1,6 AT VCH CH MOTORIZED VALVE VDHW DHW MOTORIZED VALVE P CH PUMP FL DHW FLOW SWITCH LDHW DHW LIGHT LCH CH LIGHT OP SWITCH CONNECTIONS FOR OPTIONAL CLOCK 4-5 SUPPLY FOR OPTIONAL CLOCK RT ROOM THERMOSTAT CONNECTION Fig. 8 14

15 3.4 START UP SUBSTATION After completion of the installation, follow the steps listed below: 1) Set the thermostatics mixing valves (CH and DHW) to obtain the desired temperatures. See section 1.4 User instuctions. 2) Manually rotate the pump and ensure that it set to maximum speed (see item 3.6 for setting the operational pump speed). Switch the substation to heating, and ensure that the timer and room thermostat (if fitted) are on. Vent the system, maintaining a system pressure of 1 to 1.2 bar. 3.5 SETTING ENERGY METER Main information The installation of the heat counters must comply with the normative reference EN 1434, parts 1 + 6, and I.E.E wiring regulations. This heat counter is manufactured according to the current safety regulations. The maintenance operations must be made by authorized personnel only. Breakage of any of the seals on the heat counter will invalidate the warranty. A minimum separation of 20 mm must be maintained from any electromagnetic device, and a minimum of 50mm from any other electrical wiring. The cables to the temperature sensors must not be tightly coiled, lengthened or shortened. Unpack the meter immediately prior fitting to avoid it becoming damaged. Clean using a dry cloth. When multiple heat counters are installed it is important to observe the wiring polarity. NOTE: Ensure that the counter is fitted to the correct pipe, according to its version Technichal data of heat counters Meter Nominal capacity m 3 /h 2,5 Maximum capacity m 3 /h 5,0 Temperatures range C 15,,,90 Calculating device Temperature range C 1,,,130 Temperature difference K 3,,,100 Power supply Lithium 3V Battery Functioning duration Years Data storing self-contained Display 8-digit Interfaces Infrared / M-bus Temperature Sensors Type Platinum Connection 2-wire technique Diameter mm 5,0 Cable length m

16 3.5.3 Start up Slowly open the isolation valves. Check for leaks and check operation. When the operation of the heat counter is confirmed, the counter and the sensors require sealing. Note the readings from the heat counter. Also check the following points: Is the heating system working? Are the isolation valves open? Are the filters clean? Are the temperature sensors sealed (to avoid tampering)? Is the volume displayed? Is the displayed temperature difference correct? Display set-up The heat counter is equipped with a liquid crystal display, 8 figures and special letters. There are three information levels as follows: a) Main level b) Technical level c) Static level The information is recalled by pressed the button. A short press of the button will step through the information at each level. Holding the button presseed will move through the levels. After 1 minute of non-use, the display returns back to the standard display. 16

17 3.5.5 Display Level 1) Energy used in MWh standard display 3) Value reading at a fixed date.* The value alternates with the actual date 6) Instantaneous flow rate in m3/h 2) Test of the display. Make sure all the display sections are displayed simoultaneously. 4) Total voilume (in m3) from the installation 7) Date 3) Value reading at a fixed date.* The value is displayed by turn with the actual date Level 5) Instantaneous power in KW 8) Error code 1) Maximum power in kw 5) Temperatures difference 9) Serial number 2) Maximum capacity in m 3 /h 6) Days of functioning from calibration 10) Firmware/software version 3) Input temperature in C 7) Impulses values per litre 4) Output temperatures in C Level 8) M-bus address 1) Last reading alternated with the respective date 2 16) Consumption reading in the previous 15 months alternated with the respective date* * Up to the end of the month, the consumption data and the date are displayed at zero Fig. 9 17

18 3.5.6 Error codes When the device shows an error, this is the symbol that is actually displayed. There are seven likely causes that lead to the error and sometimes, they may be displayed at the same time. The error is displayed by means of a code format ERR xx. Where xx is for the error number and is showed in hesadecimal form. Example: Err 08 > Defective coil Error codes Error codes (hexadecimal) Sum error Faulty E 2 PROM Reset Error codes (hexadecimal) Faulty reel Measure of reference error Faulty flow temp. sensor Faulty return temp. sensor Fig. 10 Error description Error Description Effect Possible cause Faulty Inp. Fl. Sensor Faulty Ret. Fl. Sensor Faulty Ref. sensor The flow temperature sensor is faulty The flow return temperature sensor is faulty Error during the measure of reference No calculation performed. The records for Cut sensor cable; removed sensor flow and energy are not updated (no new cable memorised data) No calculation performed. The records for Cut sensor cable; removed sensor flow and energy are not updated (no new cable memorised data) No calculation performed. The records for The main circuit of the electronic flow and energy are not updated (no new unit is faulty memorised data) Faulty reel Scanning is not functioning correctly No calculation performed. The records for flow and energy are not updated (no new memorised data) Removed reel; the connecting cable between the calculating device seat and the flow sensor is damaged Reset The electronics of the calculating device have been restored Faulty E 2 PROM No communication with E 2 PROM The measurements have been lost since the last data collection in the E 2 PROM, (at the EMC most the measurements for 1 day) After re-setting, the instrument is not functioning Faulty components Sum error The instrument configuration in the E 2 PROM is incorrect No calculation is carried out. The flow and energy records are not updated When an error occurs, the instrument must be replaced and sent to the supplier for testing Faulty component 18

19 3.5.7 Communication Infrared (IrdA Port) For data transfer from microclima to the computer, it is necessary to wire an optical head onto the serial gate of the computer. The optical head and the necessary software are available upon request as optional. The IrdA port is activated with an appropriate key. After 60 seconds of inactivity, the gate will shut-off automatically. M-bus M-Bus interface is available upon demand (optional). When using this system, checking of the main data and the measurements cannot be altered. The protocol is in compliance with Standard EN and with Standards IEC 870. Baud: standard: 2400 Bd. It is important to outline the typology M-Bus (length of the wiring cables, cross sections of the cable) has to correspond to the baud unit of the heat counter. During the M-Bus communication, it is not possible to use the other communication interfaces of the device (key or IrdA), and vice versa. Note: the heat counters are battery fed, and that s the reason why the simultaneous communications are so limited. In a M.-Bus net of 250 heat counters, for every tester no. 24 demands per day are possible. If a small number of demands and/or a small number of heat counters are wired to the bus, the un-used quantity of available demands is stored onto the device. The life battery of the battery depends on the quantity of data exchanged. Its minimum life is 6 years. Output signals The device is equipped with a signal outlet fed by electronic inputs, to be required when the PO is submitted. The contact is type: class A0, according to Normative EN1434, and produces the counting impulses of the heat counter. The outlet of the impulses closes in relation to the measured volume of the appliance (see data plate) for a duration of 125 ms. When the impulses through the outlet are many, the gap time between the impulses is of 125ms. Should the nominal data and the edge of the contact be taken into consideration, the end user is free to set-up the data about the impulses in a wide range of options. The contact (fig. 10/a) can be wired by means of a large number of devices, aimed to get the outlet data. The minimum duration of the battery for the heat counters, equipped with outlet impulses, is of 6 years plus 1. Impulses: Heat: standard: 1kWh/impulse, or optionals Volume: standard: 100 l/impulse Connect here the device for acquiring the output data Fig. 10/a TECHNICAL DATA Max. switching current Max. switching voltage Max. switching power supply Insulating resistance Resistance of contact Capacity of contact Maximum current Dielectric resistance (open contact) 300 ma (AC/DC) 35 V (AC/DC) 300 mw > 10 9 Ohm max. 25 Ohm max. 1.5 pf 120 ma 350 V (AC/DC) 19

20 3.6 HEAD AVAILABLE TO SYSTEM Residual head for the heating system is shown as a function of rate of flow in the graphs in fig. 11 with CH thermostatic mixing valve setted to 60 C. Set the pump speed of the heating circulation pump according to the system head (Fig. 11). Use the lowest setting that manages the heating demand for best efficiency. The user must be instructed in the operation, setting and care of the unit. It is particularly important to provide information about the safety systems and about hazards that may arise in relation to the high temperature of the district heating water. Ensure that the substation packaging is disposed of responsibly. At the end of its useful life please ensure that the substation is disposed of in the correct manner in accordance with local and national requirements. Head (mbar) 700 Central Heating Residual Head Speed 1 Speed 2 Speed Flow (l/h) l/h Speed 1 Speed 2 Speed Fig

21 4. USE AND MAINTENANCE 4.1 DISASSEMBLING THE SHELL ATTENTION! BEFORE REMOVING THE SHELL: SWITCH OFF THE VOLTAGE! WEAR THE SAFETY GLASSES! WEAR THE SAFETY GLOVES! The casing may be removed completely to facilitate substation maintenance, as shown in fig ) Remove the 4 screws. 2) Lift up the shell. 3) Pull forward and remove the shell. To access the internal components of the substation, the control panel can be tilted forwards after removal of the fixing screw. 2 4 x 3 1 Fig

22 4.2 MAINTENANCE To guarantee the operation and efficiency of the substation, it is recommended that it is serviced at regular intervals(at least annually) by a suitably qualified engineer. 5. FUNCTIONING ERRORS ATTENTION: Actions in case of operational disturbance must be done by qualified technician! The table below shows the symptoms and actions to do in case of anomalies of the substation. SYMPTOM DIAGNOSTIC REASON ACTION Cold heating water and tap water ON-OFF switch light = OFF ON-OFF switch light = ON and DHW request light = OFF and CH request light =OFF No main power supply Internal 1.6 amp fuse blown No request from Room Thermostat and DHW tap Check electrical connection to main supply Examine internal components for damage, replace as required. Replace fuse and test. (Spare fuse in control panel) Check the Room Thermostat and DHW flow switch 22 Cold or poor domestic hot water temperature. ON-OFF switch light = ON and DHW request light=off DHW request light = ON Cold or poor central heating water ON-OFF switch light = ON and temperature. CH request light = ON System requires regular topping up ON-OFF switch light = ON and CH request light = OFF ON-OFF switch light = ON and CH request light = ON Flow rate at tap too low Faulty DHW flow switch DHW mixing valve incorrectly set Clean DHW filter or DHW plate exchanger Check or change the DHW flow switch Set the DHW mixing valve at desired temperature DHW motorized valve doesn t open Check DHW motorized valve Too low primary inlet temperature Check the district heating filter (min 65 C) No request from Room Thermostat No request from Timer (optional) Circulation pump doesn t run CH motorized valve doesn t open CH mixing valve incorrectly set Too low primary inlet temperature (min 65 C) Circulation pump doesn t run Check the Room Thermostat and its wiring or that the TA link is fitted Check the timer (if fitted) that the link OP is fitted. (see electric scheme fig. 8) Check the pump Deareate the heating system Check CH motorized valve Set the CH mixing valve at desired temperature Check the district heating strainer wait 3 minutes check the CH motorized valve Manometer < 0,5 bar Insufficient system pressure Repressurise the system see Regular drop in system pres sure indicated at the manometer. Safety valve leaking Leak on system Check for possible discharge from the pressure relief valve, if yes replace. Check the expansion vessel pressure, repressurise or replace. check internal pipe work and central heating system for leaks

23 USER INSTRUCTIONS WARNINGS In case of fault and/or incorrect operation, turn off and request the assistance of suitably qualified engineer. The installation, commissioning and service of the substation must only be done by suitably qualified personnel. Under no circumstance should the safety devices or sealed units be tampered with. Sime ltd declines all responsibility for injury or damage to persons, animals or property resulting from incorrect installation or use or from the failure to provide proper earthing of the substation. Only those persons that have been instructed in its application and use should operate this appliance. 1. STARTING AND OPERATION 1.1 INITIAL The first operation of the substation must be carried out by qualified technical personnel. Successively, if it is necessary to start up the substation again, adhere strictly to the following instructions: 1) Check that the district heating circuit is open. 2) Switch on the I-O button and it will light (show fig. 13). Fig

24 1.2 CONTROL PANEL (I) - SUBSTATION ON, (O) - SUBSTATION OFF. FUSE 1,6 AT WINTER/SUMMER SWITCH SIGNAL LAMP FOR HEATING REQUEST (ROOM THERMOSTAT AND TIMER -IF FITTED- CONTACT CLOSED) SIGNAL LAMP FOR D.H.W. REQUEST (D.H.W. FLOW SWITCH CLOSED) 24

25 1.3 WINTER/SUMMER SWITCH This is a device that allows to change mode functioning: winter or summer (as shown as fig. 13/a). Fig. 13/a WINTER mode (heating and D.H.W.) press the switch on SUMMER mode (only the production D.H.W.) press the switch on IMPORTANT NOTE: Before switching off the main supply (main switch to 0) set the substation in summer mode and wait one minute to ensure that the CH motorized valve is completely closed. 1.4 REGULATION WATER TEMPERATURE The CH and DHW temperature can be adjusted with the use of the thermostatic mixing valves as shown in figures 14 and 15. C.H. THERMOSTATIC MIXING VALVE D.H.W. THERMOSTATIC MIXING VALVE COLD COLD HOT HOT The C.H. thermostatic valve is calibrated at 50 C! Fig. 14 Fig. 15 CAUTION! The thermostatic valves and connected pipe work will be hot. 25

26 26 CERTIFICATIONS

27 SIME LTD are continuously improving its products and therefore reserves the right to change specifications without prior notice and accepts no liability for any error or omission in the information contained in this document.

28 Sime Ltd 1a Blue Ridge Park Thunderhead Ridge Glasshoughton, Castleford, WF10 4UA Phone: Fax: Sime Sub HE/DHW - Cod /2011