Vaillant ecoMAX 635, Instructions For Installation And Servicing

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5 Commissioning Part I
Instructions for installation and servicing ecoMAX
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1 Press the ”i” and ”+” buttons below the display simul-
taneously. The display will now show ”d.0”. Use the
”+” button to scroll up to ”d.14”.
2 Press the ”i”–button to display the diagnostic informa-
tion (e. g. factory setting ”auto” = pump modulation on).
3 Press the ”+” or ”–” button to select the pump resi-
stance value (0 = auto, 1 = 53%, 2 = 60%, 3 = 70%, 4
= 85%, 5 = 100% these figures represent the percen-
tages of the maximum pump output).
When altering values the display will flash.
4 Press and hold the ”i”–button to save the required
value to memory. When the value is saved, the display
will stop flashing.
5 Diagnostic mode is cancelled as follows:
Press the ”i” and ”+”–buttons simultaneously
or Do not press any key for approximately four minu-
tes. The display will now return to its normal state
(current heating–system flow temperature, e.g. 45°C).
Tab. 5.1 Maximum gas rates.
5.8 Checking the gas supply settings
5.8.1 Factory–adjusted gas settings
Attention!
Before operating the boiler check the data
badge and ensure that the correct gas type
appliance has been installed.
The boiler is supplied ready adjusted and no further gas
adjustments are necessary, however both the gas inlet
working pressures and maximum gas rates should be
checked as detailed below.
5.8.2 Gas inlet working pressure
Check the inlet pressure as described below:
• Remove the front case from the boiler.
• Close the gas shutoff valve fitted to the boiler.
• Loosen the sealing screw marked ”in” (1) on the gas
valve assembly (Fig. 5.2).
• Connect a digital or a U gauge (2).
• Open the gas shutoff valve fitted to the boiler.
• Put the boiler into service (refer to the Instructions for
Use supplied with the boiler).
• Check the U gauge reading and ensure the inlet gas
pressure is between the pressures detailed below.
Natural gas:
Do not proceed with adjustment or attempt
to put the unit into service if the inlet working
pressure lies outside the 17–25 mbar range.
LPG:
Do not proceed with adjustment or attempt
to put the unit into service if the inlet working
pressure is lower than 37 mbar.
≈
5 sec
Appliance ecoMAX 635
Maximum net heat input in kW 34.9
Maximum gas rate Natural gas in m3/h 3.70
Maximum gas rate Propane in kg/h 2.70
80020014605_00GB_032006 22.02.2006 21:36 Uhr Seite 24