Do you have a question about the ecoFIT pure and is the answer not in the manual?
Questions and answers
Dave Craven
January 19, 2025
Filling the heating system how to guide
1 comments:
Mr. Anderson
February 4, 2025
To fill the heating system for a Vaillant ecoFIT pure boiler:
1. Locate the filling loop on the boiler. It typically has a lever or tap on either end. 2. Open one tap by turning it a quarter turn anti-clockwise, then do the same for the other tap. 3. Monitor the boiler's pressure gauge as the pressure increases. Stop when it reaches the desired pressure (usually around 1.5 bar). 4. Close the filling loop by turning both taps back to their original positions, ensuring they are fully closed. 5. Bleed the radiators using a bleed key to release any trapped air. 6. Check the boiler pressure again after bleeding the radiators and top up if needed. 7. Ensure the pressure is stable and within the recommended range after completing the process.
Checking and treating the heating water/filling and supplementary water ........15 Filling the condensate siphon ......16 Switching on the product ........17 Filling the heating installation ......17 Checking the gas flow rate ........17 Installation and maintenance instructions ecoFIT pure 0020230535_01...
What to do if you smell gas in the building: ▶ Avoid rooms that smell of gas. ▶ If possible, open doors and windows fully and ensure adequate ventilation. ▶ Do not use naked flames (e.g. lighters, matches). ▶ Do not smoke. 0020230535_01 ecoFIT pure Installation and maintenance instructions...
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Installation and maintenance instructions ecoFIT pure 0020230535_01...
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. 0020230535_01 ecoFIT pure Installation and maintenance instructions...
2H, G20 – 2 kPa Benchmark Factory setting for type of gas and gas (20 mbar) connection pressure Vaillant is a licensed member of the Benchmark Scheme. Cat. Unit category Benchmark places responsibilities on both manufacturers Condensing techno- Efficiency class of the boiler in accord- and installers.
Check if the supplied fixing material may be used for the wall. Conditions: The load-bearing capacity of the wall is sufficient, The fixing material may be used for the wall ▶ Wall-mount the product as described. Installation and maintenance instructions ecoFIT pure 0020230535_01...
Push the side section into the recesses in the back wall. Tilt the side section towards the product. Screw the two screws into the side section, one at the top and one at the bottom. Fold up the electronics box. 0020230535_01 ecoFIT pure Installation and maintenance instructions...
Make sure that the existing gas meter is capable of passing the rate of gas supply required. ▶ Install the following components: – Drain cocks at the lowest points in the heating install- ation (→ current version of "BS 2879") Installation and maintenance instructions ecoFIT pure 0020230535_01...
The relative positions of the pump, supply and pur- ging line must be as shown in the figure. Conditions: Combined supply and purging line ▶ Install the line in accordance with "BS 5449". – Diameter: ≥ 22 mm 0020230535_01 ecoFIT pure Installation and maintenance instructions...
You can find further information in the "BS 6798" specific- ation for installing and maintaining gas-fired boilers with a nominal heat load of less than 70 kW. ▶ Follow the instructions in the specified sequence. Installation and maintenance instructions ecoFIT pure 0020230535_01...
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24 V controller Outside temperature switches). sensor, wired Provide one common electricity supply for the boiler Open the electronics box. (→ Page 12) and for the corresponding controller: Carry out the wiring. (→ Page 13) 0020230535_01 ecoFIT pure Installation and maintenance instructions...
Status codes – Overview (→ Page 28) tions. An overview of the display and setting options in the installer level can be found in the section "Overview of the installer level". (→ Page 14) Installation and maintenance instructions ecoFIT pure 0020230535_01...
If the entire filling and supplementary water quantity dur- ing the operating life of the system exceeds three times the nominal volume of the heating installation, or – If the guideline values listed in the following table are not met, or 0020230535_01 ecoFIT pure Installation and maintenance instructions...
– Adey MC3+ – Adey MC5 – Fernox F3 – Sentinel X 300 – Sentinel X 400 Additives intended to remain permanently in the system – Adey MC1+ – Fernox F1 Installation and maintenance instructions ecoFIT pure 0020230535_01...
Do not make any adjustments to the product. ▶ Do not start up the product. ▶ If you cannot correct the failure, notify the gas supply company and proceed as follows: ▶ End check programme P.01. 0020230535_01 ecoFIT pure Installation and maintenance instructions...
Wait until the value that is read is stable. Overview of diagnostics codes (→ Page 25) – Waiting period for reading a stable value: 5 min Unscrew the cover from the flue gas analysis point (1). Installation and maintenance instructions ecoFIT pure 0020230535_01...
Install the new gas-air mixture (→ Page 24). despite fault clearance attempts, contact customer ser- vice. 10.5.3 Replacing the heat exchanger Remove the side section. (→ Page 9) Remove the gas-air mixture unit. (→ Page 22) 0020230535_01 ecoFIT pure Installation and maintenance instructions...
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Plug in the PCB plugs. Close the electronics box. Undo the clip underneath the condensate tray (4). Undo the two screws (3). Installation and maintenance instructions ecoFIT pure 0020230535_01...
Inspection and maintenance work – Overview ◁ The value is OK. (→ Page 25) ▽ The value is not OK; you cannot start up the product. ▶ Set the CO₂ content. (→ Page 22) 0020230535_01 ecoFIT pure Installation and maintenance instructions...
▶ Inform Customer Service. ▶ Check whether the air-quality requirements with regard to carbon monoxide are fulfilled. ▶ Fit the front panel. Push the clip (2) upwards. Remove the flue pipe (3). Installation and maintenance instructions ecoFIT pure 0020230535_01...
Flush out the lower section of the siphon with water. Reinsert the float (3). Note Check whether the float is present in the condensate siphon. Clip the lower section of the siphon (1) into the upper section of the siphon (2). 0020230535_01 ecoFIT pure Installation and maintenance instructions...
Close the cold water stop valve. 13 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: Telephone: 0330 100 3461 Installation and maintenance instructions ecoFIT pure 0020230535_01...
"Technical data" → Section "Technical data" d.01 Pump overrun in heating Adjustable mode d.02 Burner anti-cycling time Adjustable in heating mode ℃ – – d.04 Water temperature in the Current value cylinder adjustable 0020230535_01 ecoFIT pure Installation and maintenance instructions...
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4 = Extractor hood 5 = External solenoid valve 6 = External fault message 7 = Solar pump (omitted) 8 = eBUS remote control 9 = Legionella protection pump 10 = Solar valve Installation and maintenance instructions ecoFIT pure 0020230535_01...
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2nd attempt adjustable ℃ d.71 Maximum heating flow set Adjustable target temperature d.75 Maximum cylinder reheat- Adjustable ing time – – – d.77 Max. cylinder reheating Adjustable → Section "Technical data" 0020230535_01 ecoFIT pure Installation and maintenance instructions...
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 DHW mode: Burner on S.25 DHW mode: Pump/fan overrun S.26 DHW mode: Fan overrun Installation and maintenance instructions ecoFIT pure 0020230535_01...
Hall sensor defective, electronics defective F.49 Fault: eBUS Short circuit on eBUS, eBUS overload or two power supplies with differ- ent polarities on the eBUS 0020230535_01 ecoFIT pure Installation and maintenance instructions...
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Unsuitable pump connected, PWM plug not plugged in or has come loose, multiple plug on the PCB not plugged in correctly, interruption in cable harness, electronics defective No communication with the PCB Communication fault between display and PCB in the electronics box Installation and maintenance instructions ecoFIT pure 0020230535_01...
230V~ Main PCB Gas valve assembly Interface PCB Heating pump Control system Monitoring electrode Temperature sensor in the heating flow Room thermostat Temperature sensor in the heating return Main power supply Ignition electrode 0020230535_01 ecoFIT pure Installation and maintenance instructions...
230V~ Main PCB Gas valve assembly Interface PCB Heating pump Control system Monitoring electrode Temperature sensor in the heating flow Room thermostat Temperature sensor in the heating return Main power supply Ignition electrode Installation and maintenance instructions ecoFIT pure 0020230535_01...
300 mm Horizontal from adjacent windows on pitched or flat roofs 600 mm Above adjacent windows on pitched or flat roofs 600 mm Below adjacent windows on pitched or flat roofs 2,000 mm 0020230535_01 ecoFIT pure Installation and maintenance instructions...
300 mm is preferred. For 1 and 2 above you can use a flue gas management kit to enable the termination point to be positioned and directed away from the building fabric. Installation and maintenance instructions ecoFIT pure 0020230535_01...
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Optimum start control Fitted Fitted Fitted Fitted ALL SYSTEMS CENTRAL HEATING MODE mbar mbar COMBINATION BOILERS ONLY DOMESTIC HOT WATER MODE mbar OR mbar Temperature CONDENSING BOILERS ONLY ALL INSTALLATIONS Ratio ² Ratio ² Installation and maintenance instructions ecoFIT pure 0020230535_01...
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SERVICE 06 ² % ² % ² % ² % SERVICE 07 SERVICE 08 ² % ² % ² % ² % SERVICE 09 SERVICE 10 ² % ² % ² % ² % 0020230535_01 ecoFIT pure Installation and maintenance instructions...
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Ensure test points are capped, boiler case is correctly replaced and all other commissioning procedures are completed. Complete Benchmark Checklist, recording CO and combustion ratio readings as required. Installation and maintenance instructions ecoFIT pure 0020230535_01...
7.1 … 30.5 kW 7.2 … 34.8 kW at 80/60 °C Domestic hot water heat 7.0 … 35.0 kW 7.1 … 35.0 kW output (P) Maximum heat input – 30.6 kW 35.7 kW heating (Q max.) 0020230535_01 ecoFIT pure Installation and maintenance instructions...
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Product dimensions, height 600 mm 600 mm 600 mm 600 mm Net weight 22 kg 22 kg 22 kg 22 kg Weight when filled with water 26 kg 26 kg 26 kg 26 kg Installation and maintenance instructions ecoFIT pure 0020230535_01...
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T2/2A, 250V T2/2A, 250V T2/2A, 250V T2/2A, 250V Max. electrical power consump- 23 W 29 W 35 W 35 W tion Standby electrical power con- sumption Level of protection IPX4D IPX4D IPX4D IPX4D 0020230535_01 ecoFIT pure Installation and maintenance instructions...
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230 V / 50 Hz 230 V / 50 Hz Built-in fuse (slow-blow) T2/2A, 250V T2/2A, 250V Max. electrical power consump- 44 W 50 W tion Standby electrical power con- sumption Level of protection IPX4D IPX4D Installation and maintenance instructions ecoFIT pure 0020230535_01...
Installer level, calling up ............14 Installing the front casing............9 Installing the side section ............9 Intended use................3 Mains connection ..............13 Maintenance work ............21, 25 Minimum clearance ............... 8 Operating concept ............... 14 0020230535_01 ecoFIT pure Installation and maintenance instructions...
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Do you have a question about the ecoFIT pure and is the answer not in the manual?
Questions and answers
Filling the heating system how to guide
To fill the heating system for a Vaillant ecoFIT pure boiler:
1. Locate the filling loop on the boiler. It typically has a lever or tap on either end.
2. Open one tap by turning it a quarter turn anti-clockwise, then do the same for the other tap.
3. Monitor the boiler's pressure gauge as the pressure increases. Stop when it reaches the desired pressure (usually around 1.5 bar).
4. Close the filling loop by turning both taps back to their original positions, ensuring they are fully closed.
5. Bleed the radiators using a bleed key to release any trapped air.
6. Check the boiler pressure again after bleeding the radiators and top up if needed.
7. Ensure the pressure is stable and within the recommended range after completing the process.
This answer is automatically generated