39 of 49
Service and Maintenance
Maintenance, Service and
cleaning must be carried out by
trained and approved Personnel.
This person shall be responsible
for correct implementation of
Mantainence activities.
It is recommended that
Maintenance/Service works should be
carried out once a year. Cleaning of
the heat exchanger coils, as long
there is only minor contamination of
the coils, should be carried out at least
every 2 years.
•
Measuring and recording of preset
emission values
•
Switch off heating circuit breaker
and secure against coming on
again, or separate the appliance
on all poles from the mains
•
Isolate the Gas Supply
•
Dismantle appliance casing, bring
control panel into service position
•
Dismantle compressor, gas valve
and burner unit
•
Disconnect ignition cable. Check
ignition plugs for breaks, moisture
(damp/moist ignition plugs cause
malfunction messages - replace
ignition plugs)
•
Visual check of burner (if
necessary clean with brush/nylon
brush or vacuum cleaner)
•
Visual check of Fan and venturi
burner (if necessary clean with
brush/nylon brush or vacuum
cleaner)
•
Disconnect combustion chamber
insulation
•
Flush out heat exchanger with
pure water (remove obstinate
impurities with fine synthetic
brush and flush out)
•
Clean siphon and refill with water
before assembly
•
Check all connections of
condensate-carrying parts for
watertightness. Remove any
leaking condensate or other
dampness
•
Check fixing screws, replace if
necessary.
•
The dismantled seals for gas and
water carrying parts should be
replaced with new seals when
reassembling; this applies
especially for O rings on the gas
valve and all burner seals
•
Reassemble appliance ready for
operation
•
Open gas pipe and check for
watertightness
•
Switch on heating circuit breaker
•
Carry out function monitoring with
emissions measurement
•
Values according to factory
specifications, readjust if
necessary
