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Summary of Contents for Vaillant home combi
- Page 1 Installation and maintenance instructions For the competent person Installation and maintenance instructions HOME COMBI GB, IE Publisher/manufacturer Vaillant GmbH Berghauser Str. 40 D-42859 Remscheid Tel. +49 21 91 18‑0 Fax +49 21 91 18‑28 10 info@vaillant.de www.vaillant.de...
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Page 2: Table Of Contents
Contents Contents Adapting the unit to the heating installation............20 Burner anti-cycling time ........20 Safety ..............4 Setting the pump output........21 Action-related warnings ......... 4 Setting the bypass ..........21 Risk caused by inadequate qualifications....4 Adjusting the hot water temperature ....22 Intended use ............ -
Page 3: Home Installation And Maintenance Instructions
Contents Combustion chart ..........46 Lengths of the air/flue pipe....... 47 Technical data............ 47 Index ................... 50 0020224355_00 HOME Installation and maintenance instructions... -
Page 4: Safety
1 Safety – observance of accompanying operating, Safety installation and servicing instructions for Action-related warnings the product and any other system compon- ents Classification of action-related warnings – installing and fitting the product in accord- The action-related warnings are classified in ance with the product and system approval accordance with the severity of the possible –... - Page 5 Safety 1 ▶ In order to operate the product, ensure that 1.4.7 Risk of poisoning and burns caused by escaping hot flue gases the condensate siphon is always full. ▶ Only operate the product if the air/flue pipe 1.4.3 Risk of death due to blocked or has been completely installed.
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Page 6: Regulations (Directives, Laws, Standards)
1 Safety 1.4.12 Risk of material damage caused by using an unsuitable tool ▶ Use the correct tool to tighten or loosen screw connections. Regulations (directives, laws, standards) ▶ Observe the national regulations, stand- ards, guidelines and laws. Installation and maintenance instructions HOME 0020224355_00... -
Page 7: Notes On The Documentation
Efficiency class of the boiler in accord- Article number Gas Council Num- logy ance with EC Directive 92/42/EEC Type: Xx3(x) Permissible flue gas connections HOME COMBI 25 0010019930 47-044-62 -A (H-GB) Maximum water pressure in heating mode HOME COMBI 30... -
Page 8: Functional Elements: Combination Unit
4 Installation Installation Functional elements: Combination unit Transporting the unit Important: With regard to the regulations of 1992 concern- ing the manual handling of loads, the unit exceeds the weight that can be lifted by a single person. 4.1.1 General ▶... -
Page 9: Dimensions
Installation 4 Dimensions Clearance from combustible components It is not necessary to maintain a clearance between the product and components made of combustible materials. Using the installation template ▶ Use the installation template to ascertain the locations at which you need to drill holes and make breakthroughs. Wall-mounting the product Check whether the wall has sufficient load-bearing ca- pacity to bear the operational weight of the product. -
Page 10: Removing/Installing The Front Casing
5 Installation Removing/installing the front casing 4.9.1 Removing the front casing Tilt the electronics box forward. Hold on to the side section so that it cannot fall and unscrew both screws (1), one from the top and one from the bottom. Tilt the side section to the outside and move it down- Undo the two screws (1). -
Page 11: Checking The Gas Meter
Installation 5 Checking the gas meter ▶ Make sure that the existing gas meter is capable of passing the rate of gas supply required. Gas and water connections Caution. Risk of damage caused by incorrect gas connection installation. Excess test pressure or operating pressure may cause damage to the gas valve. -
Page 12: Connecting The Condensate Drain Pipework
5 Installation Connecting the condensate drain pipework Connecting the drain cock ▶ ▶ Follow the instructions listed here and observe any legal Connect a hose to the drain cock (1) and guide the free directives and local regulations on condensate discharge. end of the hose to a suitable outflow location. - Page 13 Installation 5 5.6.3.2 Vertical air/flue gas system 50 mm/1m Ensure that there is a minimum downward gradient of 5% between the elbow and the terminal on the air/flue pipe so that the condensate can flow back to the product. Install the flue gas pipe in accordance with the installa- tion instructions that are included in the scope of deliv- ery for the air/flue pipe.
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Page 14: Electrical Installation
5 Installation Electrical installation 5.7.3 Carrying out the wiring Danger! Risk of death from electric shock! 30 mm max. The mains connection terminals L and N re- main live even if the product is switched off: Shorten the connection cables to the appropriate ▶... -
Page 15: Operation
Operation 6 Conditions: If installing a multi-circuit controller. ▶ Change the pump operating mode (d.18) from Eco (in- termittent pump operating mode) to Comfort (continuous pump operating mode). Conditions: If you are connecting a controller (230 V). 230V~ 230V~ ▶ Connect the controller to the main plug. -
Page 16: Displaying The Status Codes
7 Start-up Proceed accordingly for all parameters that need to be Note changed. If you do not press any button for 15 minutes, Press and hold the button for 3 seconds to finish the current programme is automatically can- configuring the diagnostics codes. celled and the basic display is shown. -
Page 17: Checking And Treating The Heating Water/Filling And Supplementary Water
Start-up 7 Checking and treating the heating Caution. water/filling and supplementary water The use of unsuitable heating water may cause aluminium corrosion and a result- Caution. ing lack of leak-tightness. Risk of material damage due to poor-qual- In contrast to steel, grey cast iron or copper, ity heating water for example, aluminium reacts with alkaline ▶... -
Page 18: Avoiding Danger Arising From Insufficient Water Pressure
7 Start-up ◁ Avoiding danger arising from insufficient An automatic air vent function is activated if the pressure exceeds 0.05 MPa (0.5 bar) for longer than water pressure 15 seconds. The filling pressure must be between 0.10 and 0.15 MPa Purge each radiator until the water escapes normally, (1.0 and 1.5 bar). -
Page 19: Checking And Adjusting The Gas Settings
Start-up 7 ▶ Checking and adjusting the gas settings Remove the pressure gauge and retighten the sealing screw (2) for the measuring nipple. Only a qualified competent person is authorised to imple- ▶ Open the gas isolator cock (1). ment the settings on the gas valve. ▶... -
Page 20: Checking Function And Leak-Tightness
8 Adapting the unit to the heating installation 7.10 Checking function and leak-tightness Note The actual reading on the digital pressure Before you hand the product over to the operator: gauge should ideally be 0,05 MPa (0,5 bar) ▶ Check the gas line, the flue gas installation, the heating plus an additional pressure corresponding installation and the hot water pipes for leaks. -
Page 21: Setting The Pump Output
Adapting the unit to the heating installation 8 8.1.2 Resetting the remaining burner anti-cycling Flow rate at maximum Available pressure output (ΔT = 20K) (kPa) time Throughput in circuit ▶ Hold the button down for more than 3 seconds. (l/h) ◁... -
Page 22: Adjusting The Hot Water Temperature
The original components of the product were also certified as part of the declaration of conformity. If you do not use cer- tified Vaillant original spare parts for maintenance or repair Adjusting the hot water temperature work, this voids the conformity of the product. We therefore strongly recommend that you fit Vaillant genuine spare parts. -
Page 23: Setting The Co₂ Content
Inspection and maintenance 11 11.4 Setting the CO₂ content 11.5 Removing the gas-air mixture unit Conditions: The CO₂ content must be adjusted Note The gas-air mixture unit consists of three main components: – Ventilator – Gas valve, – Burner cover Switch off the product via the main switch. -
Page 24: Cleaning The Heat Exchanger
11 Inspection and maintenance 11.7 Checking the burner Search the surface of the burner for possible damage. If you see any damage, replace the burner. Install the two new burner seals. 11.8 Checking the ignition electrode Remove the gas-air mixture unit (6). Disconnect the connection (2) and the earthing cable (1). -
Page 25: Cleaning The Condensate Siphon
Inspection and maintenance 11 11.11 Cleaning the filter in the cold water inlet Close the main cold water supply line. Drain the product on the hot water side. Remove the connection piece from the connection for the product's cold water supply. Clean the filter in the cold water inlet without removing 11.12 Cleaning the heating filter Using water to clean the condensate tray (1). -
Page 26: Installing The Gas-Air Mixture Unit
12 Troubleshooting 11.13 Installing the gas-air mixture unit 12.2 Calling up the fault memory Install the burner. The last ten fault codes are stored in the fault memory. ▶ Install the gas-air mixture unit. Hold the button down for more than 7 seconds. Install the air intake pipe. - Page 27 Troubleshooting 12 Remove the temperature sensor (3). Remove the upper clip (1). Remove the lower clip (4). Remove the supply pipe (5). Remove the air intake pipe (2). Remove the plug from the gas valve (3) and from the fan (4). Unscrew the gas connection pipe's connection (1) from the gas valve.
- Page 28 12 Troubleshooting 12. Lift the heat exchanger up slightly and remove it to- Undo the nut (3). gether with the condensate tray (1). Remove both screws on the support plate (1). 13. Undo the four screws (3). Remove the support plate. 14.
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Page 29: Completing Repair Work
Drain the product. (→ Page 26) 14 Customer service To ensure regular servicing, it is strongly recommended that arrangements are made for a Maintenance Agreement. Please contact Vaillant Service Solutions for further details. Vaillant Service Solutions: 0330 100 3461 0020224355_00 HOME Installation and maintenance instructions... -
Page 30: Appendix
Appendix Appendix Check programmes – Overview Note Since the programme table is used for various products, some programmes may not be visible for the product in question. Display Meaning P.01 Burner operation on adjustable heat input: The product operates after ignition with the heat input set between "0" (0% = Pmin) and "100" (100% = Pmax). The function is active for 15 minutes. - Page 31 Appendix Dia- Values Default set- User-spe- gnostics Parameter Unit Increment, select, explanation ting cific setting Min. Max. code d.02 Maximum burner anti- Adjustable cycling time in heating mode ℃ – – d.04 Water temperature in the Current value cylinder adjustable ℃...
- Page 32 Appendix Dia- Values Default set- User-spe- gnostics Parameter Unit Increment, select, explanation ting cific setting Min. Max. code ℃ d.20 Maximum hot water set Adjustable target temperature – – d.21 Status of the warm start Current value off = Function deactivated for hot water adjustable on = Function activated and...
- Page 33 Appendix Dia- Values Default set- User-spe- gnostics Parameter Unit Increment, select, explanation ting cific setting Min. Max. code – d.45 Value for the base point Adjustable of the heating curve ℃ – – d.47 Outside temperature Current value adjustable d.50 Correction of the min- 3000 Adjustable...
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Page 34: C Status Codes - Overview
Appendix Dia- Values Default set- User-spe- gnostics Parameter Unit Increment, select, explanation ting cific setting Min. Max. code d.84 Maintenance in 3000 Number of hours = Display value x 10 adjustable – – – d.85 Increase in the min. out- Adjustable put (heating and hot wa- →... -
Page 35: D Overview Of Fault Codes
Appendix Status code Meaning S.17 DHW mode: Pump overrun Display in Comfort mode with warm start or hot water handling mode with cylinder S.20 Hot water handling mode: Requirement S.21 Hot water handling mode: Advance fan operation S.22 Hot water handling mode: Pump pre-run S.23 Hot water handling mode: Burner ignition S.24... - Page 36 Appendix Fault code Meaning Possible cause F.22 Safety switch-off: Low water pressure in No or insufficient water in the product, water pressure sensor de- the boiler fective, cable to the pump or to the water pressure sensor loose/not connected/defective F.23 Safety switch-off: Temperature difference Pump blocked, insufficient pump output, air in product, flow and return NTC too great (NTC1/NTC2)
- Page 37 Appendix Fault code Meaning Possible cause F.83 Fault: Burner temperature sensor Burner temperature sensor is defective When the burner starts, the temperature change recorded by the flow or return temperature sensor is non-existent or too small: Insufficient water in the product, flow or return temperature sensor incorrectly attached to the pipe F.84 Fault: Flow/return temperature sensor...
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Page 38: E Connection Diagram: Combination Unit
Appendix Connection diagram: Combination unit Burner off X106 eBUS – Burner 24V= 230V~ RT 230Vac 230Vac Main PCB 3-way valve Interface PCB Pressure sensor Timer Volume flow sensor Control system Ionisation electrode Temperature sensor in the heating flow Heating pump Temperature sensor in the heating return Ignition electrode Main power supply... -
Page 39: F Connection Diagram: Combination Unit (35 Kw)
Appendix Connection diagram: Combination unit (35 kW) Burner off X106 eBUS – Burner 24V= 230V~ 230Vac Main PCB 3-way valve Interface PCB Pressure sensor Timer Volume flow sensor Control system Ionisation electrode Temperature sensor in the heating flow Heating pump Temperature sensor in the heating return Ignition electrode Main power supply... -
Page 40: G Inspection And Maintenance Work - Overview
Appendix Inspection and maintenance work – Overview The table below lists the manufacturer requirements with respect to minimum inspection and maintenance intervals. If na- tional regulations and directives require shorter inspection and maintenance intervals, you should observe these instead of the intervals listed in the table. -
Page 41: H Opening In The Air/Flue Pipe
Appendix Opening in the air/flue pipe D, E Positioning of the opening of a fan-supported flue gas pipe Minimum dimen- Installation site sions Directly below an opening, air bricks, opening windows, etc., that can be opened. 300 mm Above an opening, air bricks, opening windows, etc., that can be opened. 300 mm Horizontally to an opening, air bricks, opening windows, etc., that can be opened. -
Page 42: Text From Bs 5440-1 On Fan-Supported Flue Gas Pipes
Appendix Text from BS 5440-1 on fan-supported flue gas pipes BS 5440–1: It is recommended that the fanned flue gas system terminal is positioned as follows: – At least 2 m from an opening in the building directly opposite, and –... -
Page 43: I Commissioning Checklist
Appendix Commissioning Checklist Benchmark Commissioning and Servicing Section It is a requirement that the boiler is installed and commissioned to the completed in full. www.centralheating.co.uk © Heating and Hotwater Industry Council (HHIC) 0020224355_00 HOME Installation and maintenance instructions... -
Page 44: Installation And Maintenance Instructions Home 0020224355_00
Appendix GAS BOILER SYSTEM COMMISSIONING CHECKLIST This Commissioning Checklist is to be completed in full by the competent person who commissioned the boiler as a means of demonstrating compliance with the appropriate Building Regulations and then handed to the customer to keep for future reference. CONTROLS Optimum start control Fitted... - Page 45 Appendix SERVICE RECORD It is recommended that your heating system is serviced regularly and that the appropriate Service Interval Record is completed. Service Provider SERVICE 01 SERVICE 02 ² % ² % ² % ² % SERVICE 03 SERVICE 04 ²...
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Page 46: J Combustion Chart
Appendix Combustion chart PRIOR TO CO AND COMBUSTION RATIO CHECK NOTE The boiler manufacturer’s installation instructions should have been followed, gas type verified and gas THE AIR GAS RATIO VALVE IS FACTORY supply pressure/rate checked as required prior to commissioning. SET AND MUST NOT BE ADJUSTED As part of the installation process, especially where a flue has been fitted by persons other than the DURING COMMISSIONING UNLESS THIS... -
Page 47: K Lengths Of The Air/Flue Pipe
Length of the C13 type flue pipe C13 type flue pipe Dia. 60/100 (L) Dia. 80/125 (L) ≤ 10 m ≤ 25 m HOME COMBI 25 -A (H-GB) Length ≤ 10 m ≤ 25 m HOME COMBI 30 -A (H-GB) air/flue ≤... - Page 48 Appendix HOME COMBI HOME COMBI HOME COMBI 25 -A (H-GB) 30 -A (H-GB) 35 -A (H-GB) Effective output range (P) at 5.1 … 15.2 kW 6.1 … 15.2 kW 7.1 … 15.2 kW 80/60 °C Hot water heat output range (P) 5 …...
- Page 49 Appendix HOME COMBI HOME COMBI HOME COMBI 25 -A (H-GB) 30 -A (H-GB) 35 -A (H-GB) Net weight 32 kg 32.6 kg 32.7 kg Weight when filled with water 36 kg 37.1 kg 37.2 kg Technical data – Electrics HOME COMBI...
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Page 50: Index
Index Index Power supply............... 14 Preparing the repair work ............ 26 Air/flue pipe ............... 12 Preparing, repair work ............26 Pressure sensor ..............29 Installing................. 12 Air/flue pipe, installed ............5 Pump ................... 21 Pump head ................28 Article number ............... 7 Pump output Setting................ - Page 52 Nottingham Road Belper Derbyshire DE56 1JT Telephone 0330 100 3461 Telephone (renewables) 0207 022 0928 Vaillant Service Solutions 0330 100 3461 Spares Technical Enquiries 01773 596615 info@vaillant.co.uk technicalspares@groupservice.co.uk www.vaillant.co.uk © These instructions, or parts thereof, are protected by copyright and may be reproduced or distributed only with...
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