Vaillant ecoTEC pro 28, Инструкция по установке и обслуживанию

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Instructions for installation and servicing ecoTEC
7.4 Checking the expansion vessel
1
Fig. 7.10 Checking expansion vessel admission pressure
Note
It is not necessary to perform this check every
year – a check every three years is sufficient.
• Ensure the boiler CH service valves are closed.
• Release the pressure from the boiler.
• Remove valve cap from expansion vessel charge point.
• Check that the internal charge pressure of the expan-
sion vessel is between 0.75 and 0.9 bar.
If the pressure is lower than this the vessel should be
repressurised using an air pump.
• Refit the valve cap.
• Repressurise boiler and heating system.
7.5 Recommissioning the boiler
• Carry out electrical safety checks.
• Turn on the electrical supply.
• Open the boiler CH service valves.
• Carry out function checks of boiler operation as previ-
ously detailed.
• Check gas rate as previously detailed.
• Check for water leaks.
• Refit case, ensuring that a good seal is obtained.
7.6 Test operation
Always perform the following checks after completing
any maintenance task:
• Commission the appliance according to the relevant
operating manual.
• Check the appliance for gas and water leaks.
• Check the air/flue gas system for leaks, check its fas-
tening
• Check for ignition and an even flame on the burner.
• Check that the heating system and the water heating
is working (only 800 series).
• Fill out the benchmark logbook.
Fig. 7.11 Function check
Inspection and maintenance 7