Related Manuals for MHS Boilers EURON 24
Summary of Contents for MHS Boilers EURON 24
- Page 1 Installation and Operation Guide EURON 2 4 / 3 0 H G EURON 30 HSG Manual Ref: L307 1 of 49...
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Page 2: Table Of Contents
Contents Contents ................. General Information ................. Regulations ................. Conditions of warranty ................. Quality of heating circuit water ................. Product Description Overview…………………… Technical Data ..........6 - 7 Dimensions ............Minimum clearances ........Connection Kits ..........Access to Boiler / Case removal ....... Connections ............. -
Page 3: General Information
Servicing and Maintenance we would removed net. Specification for installation and recommend entering into a Service maintenance of ventilation for gas Contract (Please contact MHS Boilers appliances. Service Department for more details) BS 5449: Part 1 1977 Code of practice Clarification of Warranty... - Page 4 Heating circuit water quality Heating circuit water quality The composition and quality of the Recommended Water treatment system water have a direct influence on Specialists: the performance of the whole system and the life of the boiler. On first filling, and any subsequent refilling, a pH Fernox balance of 7-8 should be maintained.
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Page 5: Product Description Overview
Product Description Overview EURON HG Legend Air intake openings Concentric air intake/flue gas connection Manual air vent Flue gas discharge / Flue hood Burner Door / Burner Stainless steel heat exchanger Condensate drain hose NTC Return sensor NTC Flow Sensor Condensate discharge Siphon Low water pressure switch Supply air hose... -
Page 6: Technical Data
Product Description Technical Data – System Boiler Units HG 24 HG 30 Nominal Heat Output at 80° / 60° C 5,8-22,8 6,9-28,1 Nominal Heat Output at 50° / 30° C 6,1-23,6 7,2-29,2 Nominal Heat Input 6,0-23,0 7,1-28,5 Normal supply level 75° / 60°C 107,2 107,1 Normal supply level 40°... -
Page 7: Technical Data
Product Description Technical Data – Combi Boiler Units HSG 30 Combi Nominal Heat Output at 80° / 60° C 6,9-28,1 Nominal Heat Output at 50° / 30° C 7,2-29,2 Nominal Heat Input 7,1-28,5 Normal supply level 75° / 60°C 107,1 Normal supply level 40°... -
Page 8: Dimensions
C Gas inlet 3/4" E Return 3/4" G Condensation discharge 28 mm H Siphon (*) Water connection (**) Gas connection EURON 24 HSG Combi EURON 30 HSG Combi Legend Flow 3/4" B Hot water outlet 1/2" C Gas inlet 3/4"... -
Page 9: Minimum Clearances
Installation Minimum clearances Minimum clearances For servicing of Boiler the minimum clearances specified in the diagram must be observed. Wall mounting Fix to the wall using the mounting bracket and fixings supplied. 9 of 49... -
Page 10: Connection Kits
Installation Connection Kits Connection Kit. Each boiler comes with a connection kit for gas, flow and return connections on the system boiler and gas, flow, return and Hot water service connections for the Combi boiler. These kits are there to aid installation and remove the need for the installer to provide isolation valves for the boiler System Boiler Connection Kit... - Page 11 Installation Access for Installation /Commissioning/ Servicing/Maintenence Access to the Boiler is as follows: Ensure boiler is switched off at the mains and Isolated from gas supply Then to gain access to inside the boiler, complete the following steps: Remove the 4 screws (1) from the Open the Release clips on top of the underside of the housing (2 either boiler Casing...
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Page 12: Connections
This ensures a constant flow of service interior of the appliance). water Check the required gas pressure for (EURON 24 HSG = 8 Litre/Minute either natural gas or LPG. EURON 30 HSG = 10 Litre/Minute). Underfloor heating For underfloor heating, attach a suitable safety thermostat to the supply. - Page 13 Installation Hydraulic diagrams EURON HG EURON HG/HSG Legend Manual bleed valve Stainless steel heat exchanger Burner Mixing channel air/gas Modulating Fan Venturi Gas valve NTC-Appliance supply sensor Motor of 3-way valve (Combi) 10 3-way valve (Combi) 11 Minimum pressure switch 12 NTC-Service water sensor (Combi) 13 Service water plate heat exchanger (Combi)
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Page 14: Circulation Pump
Installation Circulation pump Residual head pressure of the circulation pump at pump speed 2 + 3 Legend 24 HG 30 HSG/HG V2 2. Pump stages V3 3. Pump stages Flow rate (mbar) (mbar) (mbar) (mbar) 1300 1200 127,5 1100 162,5 1000 142,5 373,5... -
Page 15: Electrical Connections
Installation Electrical connections When connecting the boiler, ensure General Information the earth cable (yellow/green), which Electrical installation and connection is longer than the supply wires (see must be carried out by an authorised illustration) is connected. installer in accordance with applicable National Standards, Local Standards and Regulations. -
Page 16: Electrical Connections
Installation Electrical connections Controls Options / Accessories OCI420 Clip in Module - For Multiple Boiler communication. Clip in Module – For system incorporating pumped Heating circuit & Pumped HWS Primary (see P46 – scheme 1) AGU2.514 Clip in Module – BMS Run / Fault Indication & 0 -10v input Clip AGU2.511 RVA47 Cascade Control - Cascade Controller for multiple boiler applications... -
Page 17: Connection Of Air/Flue Gas Pipes
Installation General Connection of air/flue gas pipes Flue gas and supply air connection ondensate created in the flue must The EURON is suitable for use as also be allowed to drain away freely conventional or balanced Flue. The with the same considerations as for flue that connected... - Page 18 Installation Air-flue gas Installation For the installation of concentric This boiler comes ready for air/flue gas systems the use of connection to a concentric air/flue gas original accessory parts by MHS is system. recommended. The flue connection to the boiler can be either using 80/125mm concentric Connection kits for fluing of the air/ flue or via double pipe 80/80mm flue.
- Page 19 Installation Air/flue gas Installation Combustion Air from the Boiler Room, Ø 80mm PPS Open Flue Appliance – Air Supply fgrom the room – Flue Gas discharge via roof. Room Sealed Appliance, Ø 80/125mm PPS / Alu Room sealed appliance – Connected to Concentric supply / flue discharge through a wall Roome Sealed appliance –...
- Page 20 Commissioning Preparation for operation General Ensure that: Check the flue gas system. To ensure the safe and correct operation The the automatic bleed valve on Ensure that any necessary room of the boiler, commissioning must be the circulation pump is opened. ventilation openings are open.
- Page 21 Commissioning Preparation for operation Legend Display LED (green) Burner operation LED (red) Alarm appliance lock LED (green) flow temperature readout on display LED (green) operating phase/diagnosis of Boiler Reset Button Display adjustment Button Flue cleaner function Button Summer/winter/automatic operation Button 10 Power on/off 11 Hot water temperature Adjustment...
- Page 22 Commissioning Preparation for operation Display readout Boiler Lock Out Use of flue cleaner key Whilst the Boiler is in operation the If a malfunction occurs the Boiler will The flue cleaner key (8) is only used digital display (1) shows the flow Lock Out for safety reasons, the fault by a qualified specialist responsible temperature of the Boiler whilst at the...
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Page 23: Parameter Adjustment To Control Unit Qaa73
Commissioning Parameter adjustment on control unit QAA73 Prerequisites for control unit QAA73 function The EURON must be put into "winter" mode viathe ‘Mode’ function key (see Page 21) Legend Program key „Down‟ Program key „Up‟ Minus Key Adjustment Plus Key Adjustment Service water standby Key LCD Display Heating circuit standby key... -
Page 24: Flue Gas Measurement And Adjustment
Commissioning Flue gas quantities and adjustment Flue gas measurement and Whilst in commissioning mode to put adjustment Boiler at max output turn Service Combustion settings need to be set Water adjustment (11) fully clockwise, with the boiler in commissioning mode to put boiler into minm output trun (via Flue Cleaner button (8)), setting service water adjustment (11) fully... - Page 25 Commissioning Flue gas quantity and adjustment Maximum output Flue gas measuring and adjustment Switch the boiler to commisioning mode, while keeping flue cleaner key (8) pressed, until the red LED (3) starts to flash (double flash). The display shows alternately the figures 1 and 00. With Hot Water temperature Adjustment (11) turned fully clockwise, the boiler is working in heating mode at 100% output.
- Page 26 Commissioning Flue gas quantity and adjustment Minimum output Switch the boiler to commisioning he boiler needs to be set for Wait until the boiler stabilises and mode, while keeping flue cleaner key operation at minimum load. Turn the then carry out the flue gas (8) pressed, until the red LED (3) Hot water temperature adjustment measurement.
- Page 27 Commissioning Flue gas quantities and adjustment Setting the Boiler for maximum heat output (%) The maximum heat output can be set between the highest and lowest values appropriate for the appliance or application. The Boilers are preset in the factory at 100%.
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Page 28: Safety Check Of Heating Appliance
Commissioning Safety check of heating appliance Monitoring of the safety device Protection system of heating of the heating appliance appliance Checking the safety devices of the The boiler is protected from operating boiler can be carried out using the faults by internal monitors in the Flue Cleaner Key (8). -
Page 29: Parameters
Commissioning Parameters Reading parameters only The only accessible reading Reading of the boiler parameters is parameters are the following: done by means of the SELECT (7) Current fault readouts Boiler flow temperature reading • Keep the SELECT key (7) (°C) pressed until “[ ]"... -
Page 30: Gas Changeover
Commissioning Gas changeover Changeover from natural gas to Connect the appliance to the liquid gas (LPG) mains. 10. Open the gas isolation valve Disconnect the boiler from the 11. Put the appliance into operation mains. according to the information in the Shut the gas Isolation valve Instruction manual. - Page 31 Commissioning Gas changeover Chart for gas changeover Output Gas type Screen for gas Screen for air G20/G25 Natural gas H/LL None None 24 HG G31 /Propane 0 4.6 mm 53/8mm G20/G25 Natural gas H/LL None None 30 HSG/HG G31 /Propane 0 4.6 mm 57/12,5mm 31 of 49...
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Page 32: Gas Changeover
Commissioning Chart for gas changeover Gas changeover G20/G25 G30/G31 Natural Natural Natural Butane Butane/ Propane Propane H/LL Lower Wobbe index 45,67 37,38 80,58 70,69 (15 °C, 1013 mbar) (MJ/m Consumption max. 1,22 1,22 1,41 0,91 0,91 0,89 (15 °C, 1013 mbar) min. -
Page 33: Monitoring And Checks
Service and maintenance Monitoring and checking Maintenance is fundamentally The manufacturer is not liable for essential for the safe and correct damage to the appliance or the operation and long life of the boiler. equipment caused by use of It is recommended, that unsuitable antifreeze or additives combustion analysis be carried out at regular intervals, in order to... -
Page 34: Monitoring And Checks
Service and maintenance Monitoring and checking General remarks Cleaning of stainless steel heat exchangers Function checking At least once a year the appliance should undergo the following For Cleaning the interior/dry side of the After completing the maintenance monitoring: heat exchanger coils, the burner / burner work fill the heating circuit with a pressure of around 1,0 bar and bleed door assembly must be removed. -
Page 35: Error Codes
Service and Maintenance Locking Error Codes Display Internal Code (bO) Cause EEPROM failure Hardware failure of electronic circuit board Activation of thermostats for underfloor heating Locking because of over heating Activation of flue gas sensor Locking because of gas failure Internal locking of circuit board Flame at atart of reset phase Failure in programming... - Page 36 Service and Maintenance Information code Error Codes Display Internal Code (bO) Cause Short circuit in external/ambient sensor External/ambient sensor circuit open Remote control or room temperature sensor signal distrubed Connection of an incompatible remote control or time switch Failure of electronic hardware Flame attend of safety period not detected Extinguishing of flame during operation Flue cleaner function active...
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Page 37: Removing Appliance Cover
Maintenance and Service Removing appliance cover Bringing appliance into service position It is recommended that Maintenance, Service and Prior to maintenance work, the cleaning must be carried out by appliance must be isolated from the Maintenance / Service works are trained and approved Personnel. -
Page 38: Dismantling Burner And Heat Exchanger
Maintenance and Service Dismantling burner and heat exchanger Dismantling Burner Door • Remove all electrical connections • Disconnect the screws (1) of the mixing tube (2) • Pull out ionisation electrode (4) and ignition electrode (5) after loosening fixing screws •... - Page 39 Service and Maintenance Maintenance, Service and It is recommended that cleaning must be carried out by Maintenance/Service works should be trained and approved Personnel. carried out once a year. Cleaning of This person shall be responsible the heat exchanger coils, as long for correct implementation of there is only minor contamination of Mantainence activities.
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Page 40: Qaa 73 - End User Parameters
Service manual Appendix QAA 73 (End User Parameters) Scroll through Parameters using key 2 (Up Button) – ref Page 22 Parameter Description Options / Range Recommended Number Default 00:00 – 24:00 Current Time of Day. Actual Time. 1 Jan – 31 Dec Current Date (Day / Month) Actual Date. -
Page 41: Qaa 73 - Engineer Parameters
Service manual Appendix QAA 73 (Engineer Parameters) Press and Hold program keys 1 (Down button) and 2 (Up button) for approx 5 secs. Ref Page 22 * Lines are only displayed if the unit is operating in Open Therm Plus mode and if the boiler controller supports its function. Parameter Description Options / Range... -
Page 42: Lmu 54 - Engineer Parameters
Service manual Appendix LMU (Engineer Parameters) To Access parameters 516 – 727 from QAA73 Press and Hold Keys 4 (+ Button) and 1(Down Button) for approx 5 secs. Ref page 22 Parameter Name Setting Unit Description Summer / Winter changeover temperature ºC (30 °C: Summer / Winter changeover disabled/not active) Drawdown of the room setpoint at timer connection... - Page 43 Service manual Appendix LMU (Specialist Engineer Parameters) For Access to the next level (whilst in Parameters 516 – 727) Keep program keys 1 (Down Button) and 2 (Up Button) pressed simultaneously for approx a further 5 secs. Ref page 22 Parameter Name Setting...
- Page 44 Service manual Appendix LMU (Specialist Engineer Parameters) - continued Parameter Name Setting Unit Description Konfigoutlet3R 0000010 Installation options (function) of relay outlet 3 of the relay ClipIn Limit of temperature super-elevation via the Delta Tcontrol (0 dTUeberhBegr %: no elevation, 100 %: fully measured elevation) LmodNull Modulation air if automatic firing not in operation Installation options for: burner block, drinking water DLH cycle...
- Page 45 Service manual Appendix Flue Termination Guidelines Please note that this diagram is only intended for reference purposes only and that definitie guidance should be sort from BS 5440- 2:2000, BS6644:2005:2005 and/or IGE/UP/10 as appropriate. 45 of 49...
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Page 46: Typical Hydraulic Schemes
Service manual Appendix Typical Hydraulic Schemes Power for additional Heating Circulation Pump using AGU2.514 clip in module (Optional Extra) Parameter Changes (Using QAA73) 552 = 51 558 = Bit 2 – Set to 0 for HWS Sensor or 1 for HWS Volt free Enable (if used for Hot Water) 618 = 6 619 = 10 Note: QAA73 is required to enable required Parameter changes... - Page 47 Service manual Appendix Typical Hydraulic Schemes Parameters required for Euron Boilers In cascade using RVA47. OCI420 clip must be fitted for cascade LPB communication. RVA 47: Para 16 = 30 Para 140 = 1 Para 141 = 0 Para 142 = 1 Euron 1: (Changes made using QAA73) Para 516 = 30...
- Page 48 Notes 48 of 49...
- Page 49 B O I L E R S ELCO heating solutions. Exclusively from MHS Boilers 3 Juniper West, Fenton Way Southfields Business Park Basildon, Essex SS15 6SJ Tel: 01268 546700 Fax: 01268 Manual Ref: L307 888250 www.mhsboilers.com 49 of 49...
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