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12 

 

Heatwell Electric Combination Storage Boiler 

 

 

Specification 

 

Total Requirement 12Kw Tariff 2000 
Scottish Hydro Electric – 12Kw 

63 Amp / 230 Volts / Single Phase 
63 Amps  Split 60% - 40% 

Economy Tariffs 

ScottishPower / Economy 2000 
Scottish Hydro Electric / Total Control 

Heating Elements –Top  
Heating Element - Middle  
Heating Element - Bottom                             

21/4”BSP 3kw coil type 
21/4” BSP 2x3kw straight 
21/4” BSP 3kw coil type 

Note;     

Standard emersion heaters

 

 

Should not be used 

Heating  (Maximum House Heatloss) 

Heatwell 12   9kw or  40940 BTU’s 

Domestic Hot Water 

3kw  All Boilers 

 

 

Dimensions & Performance 

 

 

 

Total Height / Width inc TPR/ Depth inc cover 

Heatwell 12 – 1660mm / 660mm / 655mm 

 

 

 

 

Weight Empty / Full Heatwell 12 

66Kg – 290Kg 

Heating System 

Pressure Relief Valve Setting 
Expansion Vessel Pre-charge 
Pressure / System Cold Pressure 

 
3Bar 
1.5Bar 
1.5Bar 

Domestic Hot Water Store 

Heatwell 12 – 215Ltrs 

100% Heat up Time 

15Deg C to 80Deg C - 5Hrs 29Min 

70% Re-heat Time 

4Hrs 42Min  # 

T&PR Valve Opening Temperature & 
Pressure Relief Valve Setting 
Pressure Reduction Valve 

95Deg Celsius 
6Bar 
3Bar 

Expansion Vessel Capacity – Central Heating 
Expansion Vessel Capacity – Domestic Water 

 8Ltrs * 
18Ltrs * 

Maximum temperature setting 

85Deg C 

Over Temperature Shut Down / Manual Reset 

90+/- 3 Deg C 

Available Domestic Hot Water Capacity 

 

55Deg C *Heatwell 12 

68 Gallons / 309Ltrs 

                

* Depending on Heating Load 

 

 

 

*Note

 If a secondary circulation is used, then an extra expansion vessel is to be fitted to accommodate the 

extra volume. 
#

Note

 If power is switched on from a cold boiler, then 25Ltrs of hot water at 40Deg C will be available 

after 10 Minutes. 

Summary of Contents for 215 DSS/12Kw

Page 1: ...ion Vessel Fixing Brackets Central Heating Expansion Charging Kit 2 Stainless Steel Braided Connectors Installer Owners Instruction Manuel Installation User Instructions for Combination Boiler Models 215 DSS 12Kw 215DSS 15Kw To be left with The Householder beside the boiler for future reference After Commissioning System ...

Page 2: ...r Specification 12 Manufacturers Guarantee 13 User instructions 14 Fault Correction 15 Maintenance 15 Hydro Electric Total Control Tariff 16 Boiler front view 17 Manufacturer Electric Central Heating Company Ltd Emtex House Benneworth Close Hucknall Nottingham NG15 6EL Tel 0115 968 1273 Installed by Name_______________________________________________ Address________________________________________...

Page 3: ...able If the water supply pressure can not be relied on then a vented system can be considered Heatwell should be contacted for assistance with the planning of the vented installation so that the maker s guarantee remains intact If the boiler is used in an area where the temporary hardness exceeds 200ppm to comply with warranty an approved scale inhibitor must be fitted to the cold water supply of ...

Page 4: ...a fitted pipe to a drain The diagram above shows the plumbing connections to the boiler which consist of the mains water supply 22mm pipe Domestic Hot Water supply from the Mixing valve pre set at 55deg C balanced cold water supply for mixer shower Central Heating flow and return pipes and expansion vessels as shown in the diagram All fittings must be checked for leak tightness along with the fact...

Page 5: ...RNING The outlets for the T P relief valve and expansion relief valve must not be used for any other purpose No other valve may be fitted between the expansion valve or the temperature and pressure relief valve and the storage boiler Take great care not to allow debris or jointing tape to get into the system as this could impair the operation of the safety valves Tundish worked example The example...

Page 6: ...13m Subtract the resistance for 4 No 28mm elbows at 1m each 4m Therefore the maximum permitted length equates to 9m i e the actual length is 7m A 28mm D2 copper pipe will be satisfactory Diagram 1 Typical discharge pipe arrangement 3 9 The discharge pipe D1 from the vessel up to and including the tundish is generally supplied by the manufacturer of the hot water storage system see paragraph 3 5 Wh...

Page 7: ...d is positioned to prevent contact whilst maintaining visibility 3 Discharges at a high level e g in to a metal hopper and metal down pipe with the end of the discharge pipe clearly visible tundish visible or not or onto a roof capable of withstanding high Temperature Pressure Relief Valve temperature discharges of water and 3m from any plastic guttering systems that would collect such discharges ...

Page 8: ...oad carried and should be run from the switch fuse or MCB to an isolator with two pole disconnection and a minimum contact separation of 3mm adjacent to the boiler From the local isolator to the boiler a cable should be run in conduit the same size as was used to bring the supply from the switch fuse or MCB WARNING THIS APPLIANCE MUST BE EARTHED FITTED WITH AN EARTH LEAKAGE CIRCUIT BREAKER Wiring ...

Page 9: ...9 Boiler Control and Mains power Connections Commissioning Commissioning can only be carried out when the electrical and plumbing work is completed including the electric metering ...

Page 10: ...lling loop disconnected by filling the required amount of inhibitor through the 15mm pipe stub provided for the auto air vent on the flow side of the central heating system on top of the boiler The heating system can then be filled to its proper pressure of 1 5Bar the pump should be run for some time to expel all the air from the system including bleeding the radiators Finally the radiators should...

Page 11: ...mmer also serves as a frost stat which will bring the heating on if the temperature in the house drops below 5deg C Provided of course the boiler is switched on It is recommended that the programmer is set up in the sitting room in a position where it is not influenced by heat from the radiators or sunlight If the sitting room contains a solid fuel fire or any other form of additional heating then...

Page 12: ...Kg Heating System Pressure Relief Valve Setting Expansion Vessel Pre charge Pressure System Cold Pressure 3Bar 1 5Bar 1 5Bar Domestic Hot Water Store Heatwell 12 215Ltrs 100 Heat up Time 15Deg C to 80Deg C 5Hrs 29Min 70 Re heat Time 4Hrs 42Min T PR Valve Opening Temperature Pressure Relief Valve Setting Pressure Reduction Valve 95Deg Celsius 6Bar 3Bar Expansion Vessel Capacity Central Heating Expa...

Page 13: ...or hire purchase documents is required if service under guarantee is required Any service under guarantee will not alter the original expiry date at the end of the 24 month period 5 Warranty registration card must be completed and returned to register your guarantee Failure to do so may result in a delay should any fault arise 6 Scale will build up in hard water areas with a boiler operating at hi...

Page 14: ... a standard heating programmer room thermostats and thermostatic radiator valves common to all wet central heating systems Reference should be made to the makers instructions supplied with this equipment Hot Water Hot water is supplied from the boiler through a mixing valve located on the boiler hot water outlet pipe This valve is factory pre set at 55Deg C and should not normally require adjustme...

Page 15: ...e serviced annually by the installer or his approved agent It is also recommended that the concentration of the central heating protector be checked to ensure that the boiler and radiator system are protected against corrosion In addition the following checks must be made 1 The correct operation of the expansion pressure relief valves central heating and hot water systems 2 The correct operation o...

Page 16: ...length and load carried They should be run from the switch fuse or MCB to an isolator with two pole isolation in both circuits of a minimum contact separation of 3mm to a location in adjacent to the boiler If the boiler is situated in the same space as the supply companies meter then this isolator will not be required From the local isolator cables should be run in conduit the same size as was use...

Page 17: ...17 Heatwell Stainless Steel Electric Combination Boiler With front Cover Removed to show location of Electrical Components Warning There are live electrical components Under the front cover ...

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