Warmhaus ENERWA PLUS 2530C Installation & Service Manual

Condensing combi boilers

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ENERWA PLUS 2530C

ENERWA PLUS 3035C

ENERWA PLUS 3540C

ENERWA PLUS 4240C

ENERWA PLUS 4543C

CONDENSING COMBI BOILERS

INSTALLATION & SERVICE MANUAL

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Questions and answers

Prana

February 11, 2025

No hot water

1 comments:

Mr. Anderson

February 12, 2025

There could be several reasons why there is no hot water from the Warmhaus ENERWA PLUS 2530C:

1. Low Water Pressure – The boiler requires sufficient water pressure to operate. Check the display for the water pressure value (available on PLUS models) and refill using the filling tap if necessary.

2. Deaeration Mode Active – If the boiler is in deaeration mode, it may not provide hot water. Ensure the function is completed and the boiler is operating normally.

3. Incorrect Mode Selection – The boiler operates in different modes (Winter, Summer, Off). Ensure it is not set to "Off" and is in the correct mode for hot water.

4. Ignition Failure – If the ignition electrode is faulty or there is a gas supply issue, the boiler may not produce hot water. Check for any error messages on the display.

5. Three-Way Valve Issue – A malfunctioning three-way motorized valve may prevent hot water from flowing properly.

If none of these resolve the issue, professional inspection may be required.

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Summary of Contents for Warmhaus ENERWA PLUS 2530C

Page 1 ENERWA PLUS 2530C ENERWA PLUS 3035C ENERWA PLUS 3540C ENERWA PLUS 4240C ENERWA PLUS 4543C CONDENSING COMBI BOILERS INSTALLATION & SERVICE MANUAL...
Page 3 warmhaus.co.uk...
Page 4 The Benchmark Scheme Warmhaus is a licensed member of the Benchmark Scheme which aims to improve the standards of installation and commissioning of domestic heating and hot water systems in the UK and to encourage regular servicing to optimise safety, efficiency and performance.
Page 5 DHW Plate Heat Exchanger Replacement COMMISSIONING ................. 32 (for combi boilers only) ................56 4.1. Display Function..................32 5.18. Electrode Positioning For 24, 28, 33 kW & Single Elektrode ..57 FAULT FINDING & SOLUTIONS ............58 4.1.1. SET Transparent Parameters Menu (TSP) ..............32 warmhaus.co.uk...
Page 6  This safety warning indicates “DANGER Risk of Electric Warmhaus. Shock”. • Do not modify our flue system, and always use only the Warmhaus approved flue with this appliance. CAUTION  • Ensure Warmhaus original flue components including seals and gaskets are used for the installation of this appliance.
Page 7 Installation of gas fired boilers of rated input up to 70 kW (net) BS7671 IET Wiring Regulations WARMHAUS A.Ş. reserves the right to make all kinds of technical and commercial amendments without giving information and rejects all responsibilities depending on misspelling. 1015...
Page 8 1.3. Technical Specification TECHNICAL SPECIFICATION Unit Enerwa Plus 2530C Enerwa Plus 3035C Enerwa Plus 3540C Enerwa Plus 4240C Enerwa Plus 4543C GC Number 47-786-08 (ver.1.0) 47-786-10 (ver.1.0) 47-786-12 (ver.1.0) Maximum DHW Heat Input 31.5 38.8 39.5 42.5 Maximum CH Heat Input (net) 24.2...
Page 9 Where an appliance replacement is to be installed onto an existing heating system it is not mandatory to zone for an example the ground floor and Enerwa Plus 2530C—GC 47-786-08 (ver 1.0) 1st floor. To ensure compliance it is sufficient to install an external control Enerwa Plus 3035C—GC 47-786-10 (ver 1.0)
Page 10 26. Tap Water Flow Sensor 0025_00.WUK210331 27. Gas Valve 28. Heat Exchanger Door 29. Fan Figure 2.6. Parts Comprising The Combination Boiler (Enerwa Plus 2530C, Enerwa Plus 3035C, Enerwa Plus 3540C) 30. Automatic Air Relief Valve 31. Control Panel warmhaus.co.uk...
Page 11 Please follow the below installation points. Installations in rooms containing baths or showers D: 288 mm (Enerwa Plus 2530C, 3035C, 3540C) Warmhaus Enerwa Plus Combi Boiler has an IPX5D rating D: 385 mm (Enerwa Plus 2530C, 3035C, 3540C) Any switch or appliance external controls using mains electricity should not be in reach of any person using a bath or shower.
Page 12 warmhaus.co.uk...
Page 13 Only ONE 25mm clearance is allowed per installation. If one of the dimensions D, E, F, G or H is 25mm then the remainder MUST be as shown in brackets, in accordance with B.S.5440-1. The flue should not 600 mm penetrate the shaded area 600 mm 600 mm 0029_03.W210402 Figure 2.11. Terminals adjacent to windows or openings on pitched and flat roofs warmhaus.co.uk...
Page 14 YOĞU MALI KOMBİ ASKI BRAKETİ Opcjonalny Választható незадължителен Προαιρετικός MONTAJ ÇİZİMLERİ Необязательный Optionnel Optional Opcional Opzionale Optional G3/4" G1/2" G3/4" G1/2" G3/4" 80 mm 65 mm 75 mm 73 mm 65 mm 64 mm 471 mm Figure 3.1. Installation Scheme warmhaus.co.uk...
Page 15 6. Gasket 3/4 " 3 pcs. Figure 3.3. Mounting kit The Warmhaus Enerwa boiler is supplied with a hardware pack containing 1. Central Heating Return (CH-3/4” thread) isolation valves and a DHW connector pipe for the installer to connect to the boiler unit.
Page 16 3/4 G" Adding Inhibitor  CAUTION The inhibitor used in the system with your Warmhaus boiler must not cause damage to any materials within the boiler e.g. stainless steel, copper, brass 0034_00.DUK170726 and any other composite material. If the boiler is installed in areas such as leisure accommodation, then the Figure 3.5.
Page 17 11. Internal Flue Pipe 4. Screws 12. Internal Flue Pipe 5. Flange Gasket 13. Internal Wall Plate 6. Flange Gasket Screw 14. External Wall Plate 7. Neoprene Gasket 15. Grill 8. Ø100 Sealing Gasket Figure 3.8. Discrete flange connection concentric flue kit, warmhaus.co.uk...
Page 18 The flue pipe must be sealed internally and externally with the wall seals Concealed Flue Configurations supplied. Where our Warmhaus flue system is to be installed in concealed locations provisions must be made for inspection and service requirements. 0037_00.W210420 • Minimum 300 mm square inspection hatches must be fitted.
Page 19 Flue Extension Pipe (L1) c- Additional 45° Elbow = 0,5 m d- Standard Flue Set Pipe (L2) e- Additional 45° Elbow = 0,5 m f- Standard Flue Set Pipe (L3) Figure 3.14. Single 90° and two 45° elbow sample flue installations warmhaus.co.uk...
Page 20 3.11. Installation with Vertical Flue Sets (Ø60/100 mm) Your Warmhaus boiler can also be installed with a vertical flue system that can terminate on both flat and pitched roofs, vertical flue installations must not exceed 11 m in total. Apply a suitable lubricant to the sealing joints before connecting any flue products and ensure the vertical flue terminal is installed level without a slope.
Page 21 L2 = 0.5 m. (45° elbow equivalent length) L3 = 2.0 m. L4 = 0.5 m. (45° elbow equivalent length) L5 = 1.0 m. L6 = 1.5 m. L Total =6.3 m. 6.3 m. ≤ Lmax = 11 m. Correct in implementation. warmhaus.co.uk...
Page 22 90° Elbow L=170 mm 0053_03.D210120 (Ø60/100) Condensing Vertical Adapter 15311660600019 (White) L=130 mm 0054_03.D210120 Flat Roof Outlet Part Pitched Roof Outlet Tile A = 500 x 500 mm 15311660600124 15311660600125 132,5 mm 500 mm 129 mm 0055_00.D210120 0057_00.D210120 0056_00.D210120 0057_00.D210120 warmhaus.co.uk...
Page 23 If fitting a Plume Displacement Flue Kit, the air inlet • The terminal position must ensure the safe and nuisance - free must be a minimum of 150 mm from any opening windows or dispersal of combustion products. doors. warmhaus.co.uk...
Page 24 6 - Minimum internal diameter 19 mm 7 - Pipe size transition 8 - Minimum internal diameter 30 mm 9 - Water/weatherproof insulation 10 - Fit drain cover/leaf guard Figure 3.21. External termination to rainwater downpipe (NB only combined foul/rainwater drain) warmhaus.co.uk...
Page 25 9 - Water/weatherproof insulation 10 - Fit drain cover/leaf guard Note – Any external pipe work should be insulated, pipe cut at 45 degrees and a drain/ leaf guard fitted. Figure 3.23. Connection of a condensate pump - typical method. warmhaus.co.uk...
Page 26 7 Air gap 8 68 mm PVCu strap on fitting 9 Minimum internal diameter 19 mm 10 Minimum internal diameter 30 mm 11 End cut at 45° Figure 3.25. External termination to rainwater downpipe (NB only combined foul/rainwater drain) warmhaus.co.uk...
Page 27 7 Hole depth 400 mm minimum by 300 mm diameter 8 Minimum internal diameter 19 mm 9 Pipe size transition point 10 Minimum internal diameter 30 mm 11 Water/weatherproof insulation Figure 3.27. Example of a purpose made soakaway warmhaus.co.uk...
Page 28 3.16. Enerwa Plus Combi Boiler Wiring Diagram Wiring Diagram  RISK OF ELECTRIC SHOCK  0073_00.D160209 Figure 3.28. Wiring diagram warmhaus.co.uk...
Page 29 (TO PCB MAIN SUPPLY) Brown Blue Yellow/Green 0074_00.W200825 MAIN SUPPLY 230V AC THERMINAL BLOCK Room Thermostat Figure 3.31. External Control Connection / Low Voltage area and room thermostat installation. warmhaus.co.uk...
Page 30 BOILER WITHOUT TIMER MODEL SPLAN Wiring Guide: The Warmhaus Enerwa Plus boiler must have clean contact connections and must not have mains voltage connected to the room stat connections on our terminal connector, therefore if the system configuration is an SPLAN please follow the above image to ensure that 240v voltage will not be applied to the room stat connections on the boiler.
Page 31 BOILER WITHOUT TIMER MODEL YPLAN Wiring Guide: The Warmhaus Enerwa Plus boiler must have clean contact connections and must not have voltage connected to the room stat position on our terminal connector, therefore if the system configuration is a YPLAN you...
Page 32 Attention: This procedure must be applied by authorized persons and valid for only condensing boiler. Attention: The parameters as indicated DO NOT CHANGE should not be adjusted / touched by any official document supplied by Warmhaus R&D. Press the RESET and CH (-) button simultaneously...
Page 33 In order to convert from Combi boiler to System boiler, please select the system from the parameter list below according to the P01 parameter. 4.1.3. Parameters (Changing The Boiler Type, CH & DHW Power, Pre Heat switch off Temperature, CH post Circulation Time..) Transparent Parameters Menu (TSP) Designation : All Warmhaus Wallhung Boilers Type-model(s) Object Enerwa Plus Combi Boiler...
Page 34 Transparent Parameters Menu (TSP) Designation : All Warmhaus Wallhung Boilers Type-model(s) Object Enerwa Plus Combi Boiler Burner Control Transparent Parameter List Enerwa Plus Enerwa Plus Enerwa Plus Parameter no. Parameter Value Field 24N Default 28 Default 33 Default Boiler Power Output 0 = 24 kw –...
Page 35 Transparent Parameters Menu (TSP) Designation : All Warmhaus Wallhung Boilers Type-model(s) Object Enerwa Plus Combi Boiler Burner Control Transparent Parameter List Enerwa Plus Enerwa Plus Enerwa Plus Parameter no. Parameter Value Field 24N Default 28 Default 33 Default Ignition Fan Speed (P31 x 25 rpm)
Page 36 Transparent Parameters Menu (TSP) Designation : All Warmhaus Wallhung Boilers Type-model(s) Object Enerwa Plus Combi Boiler Burner Control Transparent Parameter List Enerwa Plus Enerwa Plus Enerwa Plus Parameter no. Parameter Value Field 24N Default 28 Default 33 Default Pump configuration 0 = Intermittent 0 –...
Page 37 Transparent Parameters Menu (TSP) Designation : All Warmhaus Wallhung Boilers Type-model(s) Object Enerwa Plus Combi Boiler Burner Control Transparent Parameter List Enerwa Plus Enerwa Plus Enerwa Plus Parameter no. Parameter Value Field 24N Default 28 Default 33 Default Low Noise (B&P parameter) 0 –...
Page 38 (FOR A FULL LIST OF APPROVED a combustion calibration for safety reasons to combat against changing the VALUES PLEASE CONTACT WARMHAUS TECHNICAL – 02071646233, or value by error and to ensure the combustion has been altered and set up Heat Merchants Customer Services at 0906 442300) with the correct fuel.
Page 39 Service Mode and no further gas rate, ﬂue integrity and re-circulation adjustments are required. then please run FTF / please follow FTF procedure. If FTF is not enough for correct emission values, please run Auto Calibration / please follow Auto Calibration procedure. warmhaus.co.uk...
Page 40 10.0 - 10.5 5.0 - 5.9 120-170 14-25 Nominal Value 10.4 Ignition Power= P01 Permitted Tolerance Value 10.5 - 10.0 5.0 - 5.9 45—80 10-20 Nominal Value 10.3 Minimum Power=P00=LO Permitted Tolerance Value 10.0 - 10.5 5.0 - 5.9 0-10 8-15 warmhaus.co.uk...
Page 41 Attention: This procedure must be applied by authorized persons and valid for only condensing boiler. Attention: The parameters as indicated DO NOT CHANGE should not be adjusted / touched by any official document supplied by Warmhaus R&D. Attention: Set boiler to SUMMER Mode and complete Au-To Calibration within 30 minute because time out is 30 Minute.
Page 42 Type-model / Technical data Mark (s) of conformity Procedure Manual Calibration Enerwa Plus Combi Boiler - IE granted by Warmhaus R&D Pos No Operation Description GB Attention: This procedure must be applied by authorised persons and valid for only condensing boiler.
Page 43 Wait until the approval circle complete on the LCD and release buttons. JUST AFTER RELEASE BUTTONS then Press the MODE button within 3 seconds. If the MODE is not pressed within 3 seconds the boiler will turn to the OFF state. warmhaus.co.uk...
Page 44 After each switch OFF the counting value will be decreased by 1. When “0” is reached the function stops, and the boiler exit from the ESF automatically. Check and return the boiler to the correct mode e.g. winter, summer or off. warmhaus.co.uk...
Page 45 Object Type-model / Technical data Mark (s) of conformity Procedure Info Menu Enerwa Plus Combi Boiler - IE granted by Warmhaus R&D Pos No Operation Description GB Attention: This procedure must be applied by authorized persons. Press the RESET and CH (+) button simultaneously.
Page 46 Object Type-model / Technical data Mark (s) of conformity Procedure Deareation Function Enerwa Plus Combi Boiler - IE granted by Warmhaus R&D Pos No Operation Description GB Attention: This procedure must be applied by authorized persons. Attention: During this function make sure the boiler water pressure is OK and automatic air vent cap is open. During operation if water pressure reduces then fill full the water to the installation by using filling tap or loop.
Page 47 Object Type-model / Technical data Mark (s) of conformity Procedure DHW Preheat Mode Enerwa Plus granted by Warmhaus R&D Pos No Operation Description GB Attention: This procedure must be applied by authorized persons. Press the RESET and CH (-) button simultaneously.
Page 48 Type-model / Technical data Mark (s) of conformity Procedure DHW Preheat Mode Enerwa Plus granted by Warmhaus R&D Pos No Operation Description GB If the preheat adjustments has been done by service technician then it’s possible to ACTIVATE via buttons by user.
Page 49 Ensure that all flue joints are correctly made and sealed and check the flue The gas rate must be carried out in accordance to the current gas working is suitably supported as per the manufacturer’s instructions. practices. warmhaus.co.uk...
Page 50 If the App calculator is proven to be accurate and can be used as a trusted source then Warmhaus will be happy to accept the results given by this method. When comparing the gas rate data from your test please use the DHW figures on the data badge or the stated gas rate in the technical data chart is this manual as the reference and not the CH data.
Page 51 Type-model / Technical data Mark (s) of conformity Procedure Gas Conversion from Natural gas to LPG Enerwa Plus Combi Boiler granted by Warmhaus R&D Pos No Operation Description GB Attention: This procedure must be applied by authorized persons and valid for only condensing boiler.
Page 52 Type-model / Technical data Mark (s) of conformity Procedure Gas Conversion from LPG to Natural gas Enerwa Plus Combi Boiler - IE granted by Warmhaus R&D Pos No Operation Description GB Attention: This procedure must be applied by authorized persons and valid for only condensing boiler.
Page 53 Deareation mode. on a gas appliance and Warmhaus require that you carry out the following checks as well as your industry required safety checks e.g. 26/9 checks.
Page 54 6. Reassemble the above parts in reverse order. 5.6. Ignition Electrode Replacement 7. Restore the gas and electric supply to the boiler.  Please follow the step listed in replacement of components FINAL STAGE. CAUTION 0084_00.W210424 Figure 5.3. Ignition Electrode warmhaus.co.uk...
Page 55 5. Install the new pump head and secure the 4 x pump head securing screws. 6. Reconnect the electrical connector plugs to the pump. 7. Re-pressurize the boiler and bleed all excess air. Please follow the step listed in replacement of components FINAL STAGE. 0087_00.W200325 Figure 5.6. Enerwa Plus control panel warmhaus.co.uk...
Page 56 PRV. 8. Check the PRV terminal (if possible) has not been affected by the PRV replacement. 9. Re-pressurize the boiler and bleed all excess air. Please follow the step listed in replacement of components FINAL STAGE. warmhaus.co.uk...
Page 57 Max. 5,5 mm Attention 1: IF electrode changed OR re-calibrated; THEN performing Au-TO or MA-NU calibration mandatory. Attention 2: Electrode must be replaced with ONLY Original Warmhaus Part IGNITION POSITION: THE IGNITION ROD MUST BE CENTERED ON THE SLICES LIKE SHOWN...
Page 58 PWM cable, pump main supply connector, pump main connector, measure voltage from connectors 8-) Check if there is air in the heat exchanger or system, remove air if any by activating the Deareation mode 9-) Check heat exchanger water path 10-) Reset & restart boiler warmhaus.co.uk...
Page 59 E 17 NTC (Double Heating DOUBLE NTC) malfunction ( double NTC ) faulty double NTC Probe) faulty 3-) Check cabeling and connectors between double NTC and board 4-) Reset & Restart boiler warmhaus.co.uk...
Page 60 If original service key not used aslo adjust P15 releated to the default value of boiler power and Perform Au-To calibration. Attention: Only authorised service must perform Au-To calibration warmhaus.co.uk...
Page 61 If original service key not used aslo adjust P15 releated to the default value of boiler power and perform Au-To calibration. 13-) if not successfull replace valve, and Perform Au-To calibration. Attention: Only authorised service must perform Au-To calibration warmhaus.co.uk...
Page 62 3-) Measure gas valve coil ressistances according to manual if gas E 87 error code flashing on the valve circuit > Gas valve failiure valve coils out of tolerance, then replace gas valve, and perform Au-To screen calibration. Attention: Only authorised service must perform Au-To calibration warmhaus.co.uk...
Page 63 If original service key not used aslo adjust P15 releated to the default value of boiler power and perform Au-To calibration. Attention: Only authorised service must perform Au-To calibration warmhaus.co.uk...
Page 64 > Temporary wind 5-) Activate service man menu and dis activate to remove half power precence mode 6-) IF problem still persist then perform Auto Calibration Attention: Only authorised service must perform Au-To calibration warmhaus.co.uk...
Page 65 * All installations in England and Wales must be notified to Local Authority Building Control (LABC) either directly or through a Competent Persons Scheme. A Building Regulations Compliance Certificate will then be issued to the customer. © Heating and Hotwater Industry Council (HHIC) www.centralheating.co.uk warmhaus.co.uk...
Page 66 * All installations in England and Wales must be notified to Local Authority Building Control (LABC) either directly or through a Competent Persons Scheme. A Building Regulations Compliance Certificate will then be issued to the customer. © Heating and Hotwater Industry Council (HHIC) www.centralheating.co.uk warmhaus.co.uk...
Page 67 System inhibitor concentration has been checked and System inhibitor concentration has been checked and appropriate action taken, in accordance with BS 7593 appropriate action taken, in accordance with BS 7593 and boiler manufacturers’ instructions. * and boiler manufacturers’ instructions. * Comments: Comments: Signature: Signature: warmhaus.co.uk...
Page 68 NTS pipeline or near an overhead electricity line please call us urgently: please call us urgently: 0800 111 999 0800 40 40 90 FOR ANY TECHNICAL QUERIES PLEASE RING THE WARMHAUS CONSUMER / INSTALLER / TECHNICAL HELPLINE: 0207 1646233...

This manual is also suitable for:

Enerwa plus 3035c Enerwa plus 3540c Enerwa plus 4240c Enerwa plus 4543c