Vaillant ecoTEC plus SERIES, Instructions For Installation And Servicing

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Installation and Servicing ecoTEC plus
36
Fig. 8.8 Insulation
Fig. 8.9 Panels
8 Inspection and maintenance
INNER
CASING
SEAL
FRONT
CASING
8.1.8 Condensate drain
The condense drain does not normally need removing
during servicing.
To flush the condense drain carefully pour water into
the heat exchanger and check that water flows freely
to drain. If the condense drain is blocked, refer to parts
replacement section 11 for removal.
8.1.9 Inner casing panel seal check
Refer to fig 8.9.
Check the condition of the seal, replace as required.
To replace remove the old seal, thoroughly clean the
casing surfaces. Fit the new seal, it is supplied to the
correct length.
8.1.10 Checking the expansion vessel (If fitted).
Note!
It is not necessary to perform this check every
year a check every three years is sufficient.
• Release the pressure from the boiler.
• Remove valve cap from expansion vessel charge
point.
• Check that the internal charge pressure of the
expansion vessel is to the correct design pressure.
If the pressure is lower than this the vessel should
be re pressurised using an air pump.
• Refit the valve cap.
• Re pressurise boiler and heating system.
8.1.11 Re commissioning 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
previously detailed.
• Check gas rate as previously detailed.
• Check for water leaks.
• Refit case, ensuring that a good seal is obtained.
8.1.12 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
fastening
• Check for ignition and an even flame on the burner.
• Check that the heating system is working.
• Fill out the Benchmark gas boiler commissioning
checklist at the rear of this guide.