SupeRAC – 2F
For Models 93 to 405
17 ©MHS Boilers 29/05/2013
Notes
Page 1: ...ler Models 93 to 405 Installation Operating and Service Manual MHS Boilers Ltd 3 Juniper West Fenton Way Basildon Essex SS15 6SJ Main Tel 01268 546700 Spares Tel 01268 546771 Service Tel 01268 546770...
Page 2: ...ion page 8 Location page 8 Combustion chamber door opening and adjustment page 8 Burner mounting page 9 Prevention of condensation page 9 Fuel supply page 10 Fitting appliane case panels mount control...
Page 3: ...or Biodiesel Net Efficiency 90 3 to 91 0 Suitable for low temperature hot water heating systems up to 95 C with working pressures up to 6bar Floor space saving double stacked arrangement with two or f...
Page 4: ...SupeRAC 2F For Models 93 to 405 4 MHS Boilers 29 05 2013 Technical Data...
Page 5: ...parts may be used when replacing components on the boiler otherwise warranty will be void Application The SupeRac 2F Boiler may be used for heating and hot water production purposes only The boiler s...
Page 6: ...s having electrical connections The following Codes of Practice are also applicable BS 6644 2011 Specification for gas fired hot water boilers of rated inputs between 70kW net and 1 8MW net 2nd and 3r...
Page 7: ...in the form of this book in order to ensure that these target groups have all the information they need As the supplier we would be happy to help you in connection with any additional information tha...
Page 8: ...iler to allow the removal of the burner and opening of the combustion chamber door see clearances Combustion chamber door opening and adjustment The boiler is supplied with the door opening front left...
Page 9: ...mportant to ensure that the return water temperature entering the boiler is maintained above the dew point temperature of the flue gases An acceptable method of creating of this facility is to install...
Page 10: ...ot considered suitable The oil supply pipe should terminate adjacent to the burner with an isolating valve and should include metal bowl type filter Fitting the case and Mount Control Panel See Fig 1...
Page 11: ...ted The route of the flue short be as short as possible and sized appropriately to ensure complete evacuation of combustion gases without causing excessive back pressure The flue should generate suffi...
Page 12: ...with a good quality corrosion inhibitor and the water condition must be maintained to ensure that the following values are observed pH 8 3 9 5 Hardness 100mg CaCO3 litre Chlorides 50mg litre Oxygen 0...
Page 13: ...Models 93 to 405 13 MHS Boilers 29 05 2013 Control panel schematic IG Isolator TSAH Limit thermostat TR1 1st Stage thermostat TR2 2nd Stage thermostat TA External enable contacts remove link if conne...
Page 14: ...supplies have been appropriately tested for soundness have been purged vented and the fuel control valve is closed Ask to view certificates Gas supplies should be tested and purged in accordance IGE U...
Page 15: ...urn off gas supply and ensure burner goes to lockout Wait 45 seconds turn on gas supply and press reset button on burner ensure burner restarts normally Set controls to normal operational settings Ins...
Page 16: ...gas firing or 50 C for oil firing If a modulating burner is being used then the 4 core burner connection lead T6 T8 T7 should be ignored and not utilised The thermostat sensing bulb for the 2nd stage...
Page 17: ...SupeRAC 2F For Models 93 to 405 17 MHS Boilers 29 05 2013 Notes...
