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Thermaflow TH12-210U MRK 2, Instructions For Use Installation And Servicing

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Thermaflow TH12-210U MRK 2 Instructions For Use Installation And Servicing Download Page 8

THERMAFLOW LTD | THERMAFLOW® ELECTRIC COMBINATION BOILER | 

Tel: 0870 850 5207 

 

 

8

 

1.6 

Draining and filling 

 

Caution 

this boiler works in a pressurised system which must only be drained, refilled and pressurised by 

a 

person competent to do so. 

 

Note: if the pressure gauge indicates a loss of pressure that is less than 60 KPA (0.9 bar),  
 

YOU MUST CONTACT YOUR

 

INSTALLER 

unless you have been instructed by your installer on how to 

re-pressurise the system correctly. 

 

 

1.7 Replacement 

parts 

If replacements parts are required, contact your Installer, Service Company or Thermaflow Ltd. Please 
quote the name and model of your appliance. (Ref. Spare Parts List - section 1.8.1). 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Summary of Contents for TH12-210U MRK 2

Page 1: ...est standards so we are pleased to offer our customers a comprehensive first year guarantee and a second year parts guarantee In the instruction envelope is to be found your guarantee registration car...

Page 2: ...Position 12 2 2 2 Boilers in a compartment 13 2 2 3 Clearances allow for external primary heat transfer kit 14 2 3 1 General notes 14 2 3 2 Safety valve 14 2 3 3 Pressure Temperature Gauge 14 2 3 4 Pu...

Page 3: ...1 3 2 4 Checking the hot water blending valve 31 3 2 5 Checking the concentration of corrosion inhibitor 32 3 2 6 Preventing pump seizure in summer 32 3 2 7Checking correct operation of electrical com...

Page 4: ...320KG 405KG WARNING BEFORE OBTAINING ACCESS TO TERMINALS ALL SUPPLY CIRCUITS MUST BE DISCONNECTED The TH9 has 3 and the TH12 has 4 heating elements fitted Size 16 in length and are manufactured from...

Page 5: ...e man lift DO NOT LIFT THE APPLIANCE BY ATTACHED PIPE WORK OR COMPONENTS In certain situations it may be required to use a mechanical handling aid Take care to avoid trip hazards slippery or wet surfa...

Page 6: ...laced if required or any of the other components 0 6 Water Connections There are six water connections to be made when installing the Thermaflow They are as follows 1 Flow and return connections to th...

Page 7: ...purposes The combination boiler is able to provide room heating as part of an under floor or central heating system and domestic hot water direct from the cold water supply without the need for second...

Page 8: ...to do so Note if the pressure gauge indicates a loss of pressure that is less than 60 KPA 0 9 bar YOU MUST CONTACT YOUR INSTALLER unless you have been instructed by your installer on how to re pressur...

Page 9: ...ending valve and heat exchanger 8b 22mm bend CH Flow 8c 22mm bend CH Flow 9 Primary Expansion vessel 10a Tee for external primary transfer kit 10b Tee for cold water circuit 10c Tee for cold water cir...

Page 10: ...ntent Primary 216 248 328 Water Content Domestic Secondary 2 Litres 0 44 Gallons Primary Expansion Vessel 25 Litres 5 5 Gallons 35 Litres 7 7 Gallons Secondary Expansion Vessel 0 5 Litres 0 11 Gallons...

Page 11: ...front case of the boiler 2 1 4 ELECTRICAL SUPPLY Power supply and wiring The power supply to the premises must meet the minimum requirements of the unit being installed with special attention given t...

Page 12: ...MCB should be readily accessible and installed at the origin of the supply to the boiler It should be identified as to its use Means of disconnection should be readily accessible and adjacent to the a...

Page 13: ...al requirements for cupboards or compartment design are given in the current issue of BS6798 The doorway opening should be of sufficient size to allow for easy removal of the boiler Where the boiler i...

Page 14: ...ing system exceeds the maximum quoted in table 1 Data an additional expansion vessel should be connected into the system as close as possible to the central heating return connection of the boiler Ref...

Page 15: ...essure will be determined by the volume and pressure of the incoming cold water supply 2 4 4 Hard water areas In areas where the water is Hard more than 200 mg litre it is recommended that a proprieta...

Page 16: ...om side of the safety relief valve This must be extended from the safety relief valve with not less than 15mm O D metal pipe to discharge in a visible position outside the building facing downwards pr...

Page 17: ...al heating then a separate 3 amp supply is not required for the controls as the controls are supplied via the 6 amp MCB in the control box marked No 17 on the boiler schematic on page 9 of this instru...

Page 18: ...UT OUT MANUAL RESET 3 RD STAGE HIGH LIMIT CUT OUT MANUAL RESET TAMPER PROOF CONTROL THERMOSTAT SET TO 25 C REMOVE LINKS AND FIT OFF PEAK CONTROL IF E10 OR EXTERNAL PRIMARY HEAT SOURCES ARE BEING LINKE...

Page 19: ...the Thermaflow boiler Connections onto main wiring terminal on boiler The Off Peak Control allows you to time the boiler to charge during the reduced rate periods on wet electric central heating tari...

Page 20: ...er Solar Pump T14 Common L T9 CHP 2 1 C 1 C 2 11 12 14 A2 0 90 C Control Thermostat on Thermaflow Boiler Solid Fuel Relay on Thermaflow Boiler 0 50 C Control Thermostat at Solid Fuel Boiler Wiring Cir...

Page 21: ...All Connections are 240 VAC 0 90 C Control Thermostat on Thermaflow Boiler 0 50 C Control Thermostat at Solid Fuel Boiler Solar Controller 2 11 T14 Common L Solar Pump 2 C 1 C 1 A2 11 12 12 14 A2 14 P...

Page 22: ...linking a solid fuel appliance to the Thermaflow boiler 0 50 C Control Thermostat fitted to flow pipe at solid fuel or wood burning appliance 1 T2 Pump at Solid Fuel Boiler 0 50 C ControlThermostat fi...

Page 23: ...isable to fit the off peak control when using a wet electric tariff other than Domestic Economy 2000 IMPORTANT If the boiler is connected to Scottish Power Domestic Economy 2000 tariff it requires a p...

Page 24: ...d yellow earth sleeve Make the earth cable of a greater length so that if the cable is strained the earth would be the last to become disconnected CAUTION IT IS ESSENTIAL TO MAKE SURE THE POLARITY IS...

Page 25: ...the boiler is operating correctly IMPORTANT MAKE SURE THE BOILER AND SYSTEM IS COMPLETELY FULL OF WATER AND ALL AIR IS ELIMINATED BEFORE TURNING ON ANY OF THE POWER SUPPLIES TO THE BOILER Take care no...

Page 26: ...omatic air eliminator There should be no further need to re pressurise the system after this period If the system requires continuous re pressurisation there may be a leak in the installation 2 7 6 Co...

Page 27: ...INUITY POLARITY SHORT CIRCUIT AND RESISTANCE TO EARTH CHECKS MUST BE REPEATED USING A SUITABLE MULTI METER Type of fault Check No domestic hot water or central heating 230 240V Supply 24HR 230 240V Su...

Page 28: ...1 5 Bar No Yes Increase Pressure Is there continuity through 2nd stage and 3rd stage master high limit manual re set safety thermostats No Yes Re set or replace thermostat Is there continuity through...

Page 29: ...alling for heat No Adjust the setting Is temperature above setting on aqua stat Should be set to 25o C No Re check when temperature increases Check thermostat and lock shield Valves on radiators are o...

Page 30: ...ture setting of 25 C Is domestic pump operating correctly Are the pump valves in the open position No Yes Open the pump valves If they are open replace the pump Is there circulation through the primar...

Page 31: ...of the boiler Its function is to take up expansion in the hot water pipe work and so protect the blender from damage The pressure can be accurately checked with the pressure relieved on the other side...

Page 32: ...to free the pump 3 2 7Checking correct operation of electrical components WARNING BEFORE OBTAINING ACCESS TO TERMINALS ALL SUPPLY CIRCUITS MUST BE DISCONNECTED 3 2 8 Low pressure switch To check corr...

Page 33: ...il in an over heat condition the fault must be rectified before the appliance is turned back on for use If a failure has occurred contact Thermaflow Ltd for spares and advice 3 2 12 Checking the heati...

Page 34: ...Panels 2 Solar Pump Station 3 Solar Expansion Vessel 4 Discharge Tank 5 External Primary Transfer Kit 6 Thermaflow Electric Combi 7 Hot and Cold Demand 8 Space Heating 9 Primary Expansion Vessel F C B...

Page 35: ...FLOW 35 L N E Supply Manual Reset H L Thermostats Automatic Air Eliminators at high points on pipe work Pump FE Tank Solid Fuel Stove Gravity Radiator Thermaflow external primary heat transfer Pump se...

Page 36: ...4 1 3 EXTERNAL PRIMARY HEAT TRANSFER EQUIPMENT External Primary Heat Transfer Equipment Flow connection on Thermaflow boiler 36 Flow from Solar from Solar Flow from Return Wood Burner Wood Burner The...

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