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

Transcription

1 ISO 9001 : 2000 CERTIFIED COMPANY EN Sime Sub HE - DHW

2 INSTALLER INSTRUCTIONS CONTENTS INSTALLER INSTRUCTIONS 3 MAIN INFORMATION 5 Manual purpose 5 Responsibility 5 Identification 5 Terms and definitions 6 How to apply for assistance 6 Symbols 6 TECHNICAL DATA 7 Supply 7 Main components and technical data 7 Functioning description 17 SAFETY INFORMATION 20 General warnings 20 Safe handlings 20 INSTALLATION INFORMATION 21 Unpacking 21 Characteristics of installation environment 21 Installing components 21 Disassembling the shell 22 System filling 23 Emptying system 24 FUNCTIONING ERRORS 25 MAINTENANCE 26 USER INSTRUCTIONS 27 3

3 MAIN INFORMATION Manual purpose The manual is dedicated to the substation, and provides all the information needed for assembly, installation and commissioning of the system. Responsibility Builder responsibility Our products are manufactured in compliance with the requirements of the various applicable European Directives and are thus provided with the CE and all the necessary documents. The interest in the quality of our products leads us to their constant improvement. Therefore we reserve the right to change at any time and without notice, the specifications given in this document. Installer responsibility Our responsibility as a manufacturer can not be claimed in the following cases: Failure to follow installation and use of the product. Lack or insufficient maintenance. The installer is responsible for the installation that must be in compliance with the applicable rules. Meet the following requirements: Meet the requirement in this manual. Install the system in accordance with local laws and regulations. Alert the user of the obligation to control and periodic maintenance. Ensure that these instructions are left for the user. Identification Substation Positioning data plate on Substation. A N. Description A Data plate Fig. 1 5

4 Terms and definitions Substation District heating Thermal group without burner. It Is Composed with heat exchangers provided by hot water for CH and DHW.. The substation has no burner and is suitable for installation in houses connected to district heating network. Heating system at a distance of a neighborhood or city that uses the heat produced by a thermal power plant, a cogeneration plant, or from a geothermal source. In a district heating system, heat is distributed to buildings via a network of tubes in which flows the hot water or steam. [Taken from the Glossario dell Autorità per l Energia Elettrica ed il Gas ]. Network District heating hydraulic circuit. How to apply for assistance Symbols For help and assistance contact service: Sime Ltd service Tel Fax Don t touch, hot sufrace! Danger of burns! Dont t touch! Danger of shock! Shows important information. Follow it carefully. Shows a ban. Prohibited to the following behaviors. Warning, generic danger and important notes. 6

5 TECHNICAL DATA Supply A B C E F GUARANTEE sime limited D N. Description Q.ty A Packaging 485x815x307 1 B Sime Substation 1 C Valves ¾ 4 D Valves ½ 2 E Template 1 F Guarantee 1 Fig. 1/a Main components and technical data Sime Substation The Sime Sub HE/DHW are a heating substations suitable for apartments and singlefamily houses that are directly or indirectly connected to a heating network. 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 (see technical features). 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. 7

6 Dimensions Front view Side view Rear view 33, , , H.S Top view H.R H.M.R. H.M.S. H.W.O. C.W.I KEY H.S. HEATING SUPPLY 22 mm COMPRESSION H.R. HEATING RETURN 22 mm COMPRESSION H.M.R. HEATING MEDIA RETURN (DISTRICT HEATING) 22 mm COMPRESSION H.M.S. HEATING MEDIA SUPPLY (DISTRICT HEATING) 22 mm COMPRESSION H.W.O. HEATING WATER OUTLET 15 mm COMPRESSION C.W.I. COLD WATER INLET 15 mm COMPRESSION Fig. 2 LEGENDA HS Heating supply 22 mm compression HR Heating return 22 mm compression HMR Heating media return (District heating) 22 mm compression HMS Heating media supply (District heating) 22 mm compression HWO Hot water outlet 15 mm compression CWI Cold water inlet 15 mm compression 8

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

8 Technical features GENERAL SIME SUB HE/DHW 12/60 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 32,3 32,3 Water filled weight substation kg 35,9 35,9 Minimum head input Working head kpa kpa 39,2 (at 1250 l/h) 26,5 (at 1000 l/h) 14,7 (at 1250 l/h) 9,8 (at 1000 l/h) 39,2 (at 1250 l/h) 26,5 (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) OPERATION DATA Heating network Maximum static operation pressure bar 3,5 3,5 bar Maximum temperature C Volume l 1,3 1,3 Heating circuit Max temperature C Maximum pressure bar 2,5 2,5 Relief valve opening pressure bar 3 3 Volume l 1,1 1,1 Expansion vessel volume l 8 8 Hot water circuit Maximum/minimum pressure bar 7 / 0,5 7 / 0,5 Temperature range C Volume l 0,95 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 10

9 Examples of applications Condition: Steady state operation Max Power absorbed CH=12 kw SIMESUB 12/60 Flow = 1150 l/h (loss=40 kpa) T HMS = 70 C Flow = 1150 l/h (loss=40 kpa) T HMS = 80 C Flow = 1150 l/h (loss=40 kpa) T HMS = 85 C Flow = 1000 l/h (loss=30 kpa) T HMS = 70 C Flow = 1000 l/h (loss=30 kpa) T HMS = 80 C Flow = 1000 l/h (loss=30 kpa) T HMS = 85 C Flow = 750 l/h (loss=17 kpa) T HMS = 70 C Flow = 750 l/h (loss=17 kpa) T HMS = 80 C NETWORK Flow = 750 l/h (loss=17 kpa) T HMS = 85 C T HMR = 29 C T HMR = 28 C T HMR = 22,5 C T HMR = 31 C T HMR = 30 C T HMR = 28 C T HMR = 38 C T HMR = 33 C T HM = 31 C T HWO = 45 C T HWO = 42,5 C T HWO = 40 C T HWO = 55 C T HWO = 51,5 C T HWO = 45 C T HWO = 55 C T HWO = 55 C T HWO = 47 C DHW FUNCTION Flow= 20 l/min T HWI =10 C 11

10 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 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. 3. Presetting 1,0-7,5 Dp [mbar] Flow rate [l/h] Fig. 3 Energy meter (for code ) The Energy meter is the device that stores the amount of heat used by the temperature difference between HMS and HMR and the amount of water used route under its control. 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. Clean using a dry cloth. When multiple heat counters are installed it is important to observe the wiring polarity. 12

11 TECHNICAL DATA 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 3 V 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 1.5 Errors code 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 (fig. 4). 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 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 Fig. 4 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 Sum error The instrument configuration in the E 2 PROM is incorrect 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 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 components Faulty component 13

12 Level 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. 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. 5 14

13 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 unused 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. 6) 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. 6 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) ma (AC/DC) 35 V (AC/DC) 300 mw > 109 Ohm max. 25 Ohm max. 1.5 pf 120 ma 350 V (AC/DC)

14 Kit Energy meter code (for code ) The energy meter is used for measurement of both heat and cooling in all water based plants. The meter is simple to read and verify. The energy meter receives volume pulses from the connected flow meters and calculates the energy for every predetermined water volume. The energy calculation includes temperature measurements in flow and return as well as correction for density and heat content according to EN The energy meter is calibrated at factory and it is available on request. Circulation pump Head avaiable To system Residual head for the heating system is shown as a function of rate of flow in the graphs in fig. 7 with CH thermostatic mixing valve setted to 60 C. Set the pump speed of the heating circulation pump according to the system head (Fig. 7). Use the lowest setting that manages the heating demand for best efficiency. 600 Central Heating Residual Head 500 Head (mbar) Speed 1 Speed 2 Speed Flow rate (l/h) l/h Speed 1 Speed 2 Speed Fig. 7 16

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

16 7 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 (fig. 10). Before any work is done on the substation, it must be isolated from the power supply by turning off at the external switched supply. 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. 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 LEGENDA 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 RT ROOM THERMOSTAT CONNECTION Note: Remove 6-7 connections for OP MSW FA Fig

17 Functioning The boiler heats the water, which is distributed to multiple buildings through the distribution network. When it is in substation heating exchanger, water to water transfer network in the distribution system inside the building the necessary heat for space heating and domestic hot water production. At the end of this process, the water, now cooled, returns to Central to be reheated. H.S. H.R. H.M.R. H.M.S. H.W.O. C.W.I. Fig

18 SAFETY INFORMATION General warnings Do not touch the substation when it is ON. Do not touch the substation with wet hands. Do not touch the substation with barefoot. Do not remove or bypass safety devices or destroy the whole system. Do not use water jets direct or indirect substation. Do not open the door of the substation when it is powered. The manufacturer is not liable for damage caused to the entire substation for purposes other than those described in this manual. The manufacturer is not liable for failure or forced rimorzione symbols and requirements present in the system components. Obey all local laws regarding safety and risk prevention. The electrical equipment at end of life should be treated as waste electrical and electronic equipment (WEEE) Dispose of the substation at the end of life correctly according to directives and local and national regulations. Safe handlings The manufacturer is not liable for damage caused to the entire substation for purposes other than those described in this manual The temperature and pressure of the water district heating system are very high. Only qualified technicians are authorized to perform the installation, initial startup and maintenance of substation The manufacturer is not liable for the failure or forced rimorzione symbols and requirements present in the system components Obey all local laws regarding safety and risk prevention 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. Remove the package at the installation site Caution should be exercised during these operations During all manoeuvres and handling actions, every attempt should be made to ensure the following unless unavoidable and/or the weight is light. 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 Avoid direct contact with sharp edges Avoid contact with any hot surfaces 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 Please be aware that due to the wet testing of the appliance, there may some r sidual 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. 20

19 INSTALLATION INFORMATION Unpacking Please see the handling notice, enclosed in this manual. 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. Make sure the mounting location is adequate to support the weight of the substation and complies with any applicable legislation. The system can generate noise during operation and this should be considered where substation is installed. Installation and commissioning must be performed only by qualified service personnel. Due to vibrations during transportation and thermal expansion, nuts and gaskets must be tightened upon installation. Refer to the applicable regulations of the district heating supplier. Read the technical data. Characteristics of installation environment Installing components The premises must be suitable for installation of: HUMIDITY less than 90% TEMPERATURE RANGE: 0 60 C Wall can withstand the weight of the substation. Isolated from any electromagnetic interference. PREPARATION for electrical and hydraulic connections. Valves ¾ Valves ½ Follow the steps listed below: 1. Flush out the heating and hot water systems. 2. Fit the isolation valves using the washers provided. 3. Connect to the hydraulic system, ensuring correct orientation. Fig

20 Disassembling 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. 12/a. Proceed as follows: 1. Remove the 4 screws. 2. Lift up the shell. 3. Pull forward and remove the shel. 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. 12/a 22

21 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 must be done slowly so as to allow any air to be bled off through the air vents. Follow the steps listed below: 1. Remove the shell (shown fig. 12/a) 2. Open the isolation valves 1/2 as shown fig Fully open one of the isolation valves. Slowly open the second isolation valve and fill the central heating system (fig. 13) Fig Check for leaks. 5. Ensure that all the radiators are vented. Continue to fill the system until the pressure is between 1 and 1.2 bar. 6. 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. 7. The charge pressure, with the system cold, must be between 1 and 1.2 bar. 8. 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 2/a. 23

22 Emptying system Follow the steps listed below: 1. Turn off the substation electrical supply. 2. Close the isolation valves ½ (n.1 fig. 13). 3. Connect a pipe to the drain valve (n.20 fig 2/a) and open the drain valve to empty the system. Start up After completion of the installation, follow the steps listed below: 1. Set thermostatic mixing valve (heating and DHW) at desired temperature (see user instruction). 2. Manually rotate the pump and ensure that it set to maximum speed (see fig. 7). 3. Switch the substation to heating, and ensure that the timer and room thermostat (if fitted) are on. 4. maintaining a system pressure of 1 to 1.2 bar. 5. Check for leaks and check operation. 6. When the operation of the heat counter is confirmed, the counter and the sensors require sealing. Note the readings from the heat counter. 7. Check for temperature difference and volume are displayed correctly. 24

23 FUNCTIONING ERRORS Actions in case of operational disturbance must be done by qualified technician. 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. 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 Cold or poor domestic hot water temperature. ON-OFF switch light = OFF ON-OFF switch light = ON and DHW request light = OFF and CH request light =OFF ON-OFF switch light = ON and DHW request light=off DHW request light = ON Cold or poor central heating ON-OFF switch light = ON water temperature. and 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 Manometer < 0,5 bar No main power supply Internal 1.6 amp fuse blown No request from Room Thermostat and DHW tap Flow rate at tap too low Faulty DHW flow switch DHW mixing valve incorrectly set DHW motorized valve doesn t open Too low primary inlet temperature (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 Insufficient system pressure Safety valve leaking Regular drop in system pres sure indicated at the manometer. Leak on system 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 Clean DHW filter or DHW plate exchanger Check or change the DHW flow switch Set the DHW mixing valve at desired temperature Check DHW motorized valve Check the district heating filter 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 Repressurise the system see 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 25

24 USER INSTRUCTIONS CONTENTS MAIN INFORMATION 28 Manual purpose 28 Responsibility 28 Terms and definitions 28 How to apply for assistance 29 Symbols 29 Raccomandazioni per l uso 29 INFORMATION USE 30 Control panel 30 Starting and operation 31 Regulation water temperature 32 Certifications 33 Note 34 27

25 MAIN INFORMATION Manual purpose The manual is dedicated to the substation, and provides all the information needed for assembly, installation and commissioning of the system. Responsibility Builder responsibility Our products are manufactured in compliance with the requirements of the various applicable European Directives and are thus provided with the CE and all the necessary documents. The interest in the quality of our products leads us to their constant improvement. Therefore we reserve the right to change at any time and without notice, the specifications given in this document. Our responsibility as a manufacturer can not be claimed in the following cases: Failure to follow installation and use of the product. Lack or insufficient maintenance. Installer responsibility The installer is responsible for the installation that must be in compliance with the applicable rules. Meet the following requirements: Meet the requirement in this manual. Install the system in accordance with local laws and regulations. Alert the user of the obligation to control and periodic maintenance. Ensure that these instructions are left for the user. User responsibility To ensure optimal operation of the system, the user must meet the following requirements: Carefully read and follow the instructions provided with the substation. Please contact qualified professionals to carry out the installation and initial operation. To perform inspections and maintenance required by a qualified technician. Incorrect installation and / or poor maintenance can cause damage to persons or property. Ask the installer to illustrate the operation of the system. Keep these instructions in good condition and close to the unit for future reference. Do not tamper with safety devices. This appliance is not designed to be used by persons (including children) whose physical, sensory or mental reduced or no experience or knowledge of. Terms and definitions Substation District heating Thermal group without burner. It Is Composed with heat exchangers provided by hot water for CH and DHW.. The substation has no burner and is suitable for installation in houses connected to district heating network. Heating system at a distance of a neighborhood or city that uses the heat produced by a thermal power plant, a cogeneration plant, or from a geothermal source. In a district heating system, heat is distributed to buildings via a network of tubes in which flows the hot water or steam. [Taken from the Glossario dell Autorità per l Energia Elettrica ed il Gas ]. Network District heating hydraulic circuit. 28

26 How to apply for assistance For help and assistance contact service: Sime Ltd service Tel Fax Symbols Don t touch, hot sufrace! Danger of burns! Dont t touch! Danger of shock! Shows important information. Follow it carefully. Shows a ban. Prohibited to the following behaviors. Warning, generic danger and important notes. Raccomandazioni per l uso 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. 29

27 INFORMATION USE Control panel (I) (O) Substation ON 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) Fig

28 Starting and operation Winter / summer mode This is a device that allows to change mode functioning: Summer mode produces only DHW. Winter mode produces DHW and heating. Select the desired mode (fig. 15). Fig. 15 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 ( fig.16. Switch lights. To off set the substation in Summer and wait a minute. Place the switch in position (O). The light will turn off. Fig

29 Regulation water temperature The thermostatic valves and connected pipe work will be hot. DHW regulation For the adjustment of the DHW thermostatic mixing valve proceed as follows: 1. Remove shell (see installer instructions). 2. Set the desired temperature of the CH thermostatic mixing valve (fig.17). COLD HOT Fig

30 Certifications 33