MHG Heating GK 4 Installation And Operating Manual Download Page 20 | Manualshive

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© MHG Heating Ltd

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MHG Heating Ltd, Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey, KT20 5LR

0845 6448802 Telephone. 0845 6448803 Fax. Email

[email protected]

Website www.mhgheating.co.uk

010908

8.0 Hydraulic Configurations

The GK range has been designed to suit a vast number of installation hydraulic configurations. In all
cases the minimum flow rate detailed in the appliance data table must be achieved through the units
when during operational periods.

8. 1 Single Boiler Installation Boiler Without Integral RVA Controller

8. 12 Single Boiler Installation Boiler Without Integral RVA Controller With Low Loss Header

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Summary of Contents for GK 4

Page 1: ...Centre Waterfield Tadworth Surrey KT20 5LR 0845 6448802 Telephone 0845 6448803 Fax Email info mhgheating co uk Website www mhgheating co uk 010908 Installation and Operating Manual for the GK 4 8 Cas...

Page 2: ...2 Flue Baffle Installation 14 5 0 Technical Data 15 6 0 Pressure Relief Valve 17 7 0 Electrical Connections 18 7 1 Internal Wiring Diagrams 19 8 0 Hydraulic Configurations 20 8 1 Hydraulic Single Uni...

Page 3: ...volt free enable per applied boiler 1 2 The GK Enhanced unit with cascade controller appliances are designed to be applied to systems where the cascade control is undertaken by the lead boiler Contro...

Page 4: ...49 1990 Specification for forced circulation hot water central heating systems for domestic premises BS 6644 2005 Specification for gas fired hot water boilers of rated inputs between 70kW net and 1 8...

Page 5: ...delivery has been made The customer shall only be able to claim against MHG under guarantee if the commissioning of the object of delivery has been carried out by MHG staff or the authorised supplier...

Page 6: ...03 Fax Email info mhgheating co uk Website www mhgheating co uk 010908 3 0 Dimensions GK 4 8 Boilers Legend Description Units GK4 GK5 GK6 GK7 GK8 L Overall Length mm 817 917 1017 1117 1217 LA Flue Baf...

Page 7: ...3 1 Dimensions GK 4 8 Combined Legend Description Units GK4 GK5 GK6 GK7 GK8 L Overall Length mm 817 917 1017 1117 1217 LA Flue Baffle Length mm 350 460 460 460 460 LK Boiler Excluding Burner Length mm...

Page 8: ...om Downs Metro Centre Waterfield Tadworth Surrey KT20 5LR 0845 6448802 Telephone 0845 6448803 Fax Email info mhgheating co uk Website www mhgheating co uk 010908 3 2 Dimensions GK 8 Only Legend Descri...

Page 9: ...elephone 0845 6448803 Fax Email info mhgheating co uk Website www mhgheating co uk 010908 3 3 Flue Baffle Dimensions Legend Description Units GK2 4 GK5 8 L1 Socket Length mm 60 132 L2 Overall Length m...

Page 10: ...Heating Ltd Unit 4 Epsom Downs Metro Centre Waterfield Tadworth Surrey KT20 5LR 0845 6448802 Telephone 0845 6448803 Fax Email info mhgheating co uk Website www mhgheating co uk 010908 3 4 Dimension a...

Page 11: ...3 5 Dimension Gas Burner Option Legend Description Units GK4 GK5 GK6 GK7 GK8 L Overall Length mm 826 926 1026 1126 1226 LA Flue Baffle Length mm 350 460 460 460 460 LK Boiler Excluding Burner Length m...

Page 12: ...f alternate access to the rear of the unit is available To either side of single boiler B 100mm Above the optional pump kit C 50mm If alternate access to the rear of the unit is available Between two...

Page 13: ...ciated pumps from sticking and other metals from oxidising To maintain the structural integrity of the appliance the internal components should not be used during the lifting and positioning of the un...

Page 14: ...re supplied with a flue system baffle This must be connected to the appliances spigot as indicate below prior to installing the flue system If excessive draughts are present within the flue system and...

Page 15: ...Burner Dependant Burner Dependant Burner Dependant Burner Dependant Burner Dependant Limit Temperature O C 110 110 110 110 110 Maximum Flow Temperature O C 90 90 90 90 90 Maximum Working Pressure bar...

Page 16: ...ly sized Pressure Safety Relief Valve The location of this valve is important with respect to the applied pressure of the boiler circulation pump it is therefore recommended to locate the Pressure Saf...

Page 17: ...of the hydraulic kit will facilitate that installation of the system pump groups that are also available as an optional extra Legend 1 Boiler Drain Valve 2 Hot Water Outlet 3 Secondary Return 4 Cold...

Page 18: ...230 Volt Output For Mixing Valve Opening Max 1Amp Y2 230 Volt Output For Mixing Valve Opening Max 1Amp B5 230 Volt Burner Output 2nd Stage Operating Signal T6 230 Volt Burner Output for 2nd Stage Enab...

Page 19: ...19 MHG Heating Ltd Unit 4 Epsom Downs Metro Centre Waterfield Tadworth Surrey KT20 5LR 0845 6448802 Telephone 0845 6448803 Fax Email info mhgheating co uk Website www mhgheating co uk 010908 Internal...

Page 20: ...aulic Configurations The GK range has been designed to suit a vast number of installation hydraulic configurations In all cases the minimum flow rate detailed in the appliance data table must be achie...

Page 21: ...worth Surrey KT20 5LR 0845 6448802 Telephone 0845 6448803 Fax Email info mhgheating co uk Website www mhgheating co uk 010908 8 13 Single Boiler Installation Boiler With Integral RVA Controller 8 14 S...

Page 22: ...22 MHG Heating Ltd Unit 4 Epsom Downs Metro Centre Waterfield Tadworth Surrey KT20 5LR 0845 6448802 Telephone 0845 6448803 Fax Email info mhgheating co uk Website www mhgheating co uk 010908 8 2 Casc...

Page 23: ...th Reduced Pressure Zone RPZ Valve Incorporating a Type BA Air Gap Tundish Control Valve Further more in accordance with BS 6644 2005 system with an input greater than 70kW nett an automatic water rep...

Page 24: ...lowing cleaning and flushing the system MUST be dosed with a good quality water treatment to prevent corrosion and the formation of scale FAILURE TO OBSERVE THESE REQUIREMENTS WILL RENDER THE WARRANTE...

Page 25: ...the unit control fascia Each GK can be supplied with or without an automatic controller RVA33 etc In either case the boiler will have the following control panel If the unit was supplied with an Auto...

Page 26: ...should be noted for future reference If the fault is related to a specific appliance the unit can be reset by pressing the Lockout Reset Button If the fault is related to a RVA controller or the LPB...

Page 27: ...e Sensor Not Used E 118 Low System Water Pressure Sensor Not Used E 119 System Water Pressure Switch Activated Below 0 8 bar E 124 Module Temperature Too High Auto Resetting E 131 Fault With Burner E...

Page 28: ...en The Hinged Flap Press Hold the Program Buttons simultaneously for more than 3 seconds until Parameter 51 appears Use either of the Program Buttons to access the desired parameter line Parameter Lin...

Page 29: ...30 30 17 Weather Compensation Curve If a 0 10 volt signal is the required heat generation control method for the RVA33 boiler installation this setting must be adjusted to on all RVA47s present in the...

Page 30: ...0 65 Room Temperature Influence 0 Inactive 1 Active 0 1 1 66 Load Influence 0 1 1 67 Switching Diff of Room Temperature Inactive 0 5 4 0 Active 4 0 1 0 68 Min Limitation of Flow Temperature 0 95 8 69...

Page 31: ...21 Pure Load Compensation 0 Locked 1 Released 0 1 1 22 Gain Factor For Room Influence 0 20 4 23 Constant For Quick Setback 0 20 2 24 Boost Room Temperature Set Point Room Sensor Dependant QAA10 50 70...

Page 32: ...t please ensure that the system water has been cleansed and treated with a suitable inhibitor as detailed in Filling the system and system water quality Prior to applying power to the appliance its ci...

Page 33: ...tilation system for conformity with prevailing regulations k Check the Pressure Safety Relief Valve size rating and orientation for conformity with prevailing regulations The results of the Inspection...

Page 34: ...il info mhgheating co uk Website www mhgheating co uk 010908 m Inspect the general condition of the flue system including the termination repair as necessary or advice on any remedial action as requir...

Page 35: ...Heating Ltd 35 MHG Heating Ltd Unit 4 Epsom Downs Metro Centre Waterfield Tadworth Surrey KT20 5LR 0845 6448802 Telephone 0845 6448803 Fax Email info mhgheating co uk Website www mhgheating co uk 010...

Page 36: ...m Downs Metro Centre Waterfield Tadworth Surrey KT20 5LR 0845 6448802 Telephone 0845 6448803 Fax Email info mhgheating co uk Website www mhgheating co uk 010908 15 0 Weather Compensation Slope Outside...

Page 37: ...Unit 4 Epsom Downs Metro Centre Waterfield Tadworth Surrey KT20 5LR 0845 6448802 Telephone 0845 6448803 Fax Email info mhgheating co uk Website www mhgheating co uk 010908 Flow Sensor Resistance Curve...

Page 38: ...38 MHG Heating Ltd Unit 4 Epsom Downs Metro Centre Waterfield Tadworth Surrey KT20 5LR 0845 6448802 Telephone 0845 6448803 Fax Email info mhgheating co uk Website www mhgheating co uk 010908 Hydraulic...

Page 39: ...on zone and module temperature control A dedicated housing is also available to ease the installation process RVA46 Single Zone Controller This single zone controller has the capability to control one...

Page 40: ...0 MHG Heating Ltd Unit 4 Epsom Downs Metro Centre Waterfield Tadworth Surrey KT20 5LR 0845 6448802 Telephone 0845 6448803 Fax Email info mhgheating co uk Website www mhgheating co uk 010908 17 0 Explo...

Page 41: ...Bracket Complete GK 6 Left 94 17260 5014 2 Support Bracket Complete GK 6 Right 94 17260 5013 2 Support Bracket Complete GK 7 Right 94 17260 5015 2 Support Bracket Complete GK 7 Left 94 17260 5016 2 Su...

Page 42: ...VA 53 242 109 B Controller 94 80200 5015 23 RVA 63 242 109 B Controller 94 80200 5031 23 Cable Tree for RVA 53 242 RVA 63 242 94 89200 5009 23 RVA 63 280 380 Controller 94 80200 5042 23 Cable Tree For...

Page 43: ...91212 0001 o A Base Cover with Condensate Drain for Sound Absorber RSU RST 130 95 91212 0004 o A Base Cover without Condensate Drain for Sound Absorber RSU RST 180 95 91212 0003 o A Base Cover with Co...

Page 44: ...ating Ltd 44 MHG Heating Ltd Unit 4 Epsom Downs Metro Centre Waterfield Tadworth Surrey KT20 5LR 0845 6448802 Telephone 0845 6448803 Fax Email info mhgheating co uk Website www mhgheating co uk 010908...

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