10 Maintenance
10.1 General
10.1.1 General instructions
In heating and air conditioning systems, a regular inspection and
maintenance as required by qualified personnel contribute to correct
operation according to the product specification, and therefore to ensuring
high efficiency and low environmental pollution in the long term.
Danger of electric shock
Before any work, switch off the mains supply to the boiler.
Before removing parts of the casing, the boiler has to be de-
energised.
Work under voltage (removed casing) may only be carried out by
a trained electrician.
Cleaning of heating surfaces and burner should be carried out by the
approved installer. Before work is started, the gas shut-off device and the
disconnector valves of the hot water should be closed.
Danger
Risk of poisoning.
Never use condensate water as drinking water!
Condensate is not suitable for consumption by people or
animals.
Do not let the skin come into contact with condensate.
Suitable protective clothing must be worn during maintenance
work.
10.1.2 Inspection and service as required
Important
We recommend having the boiler inspected annually. If the need
for maintenance work is found during inspection, this should be
carried out according to need.
Maintenance work includes:
Cleaning the boiler outside.
The burner must be checked for soiling, and then cleaned and serviced
if necessary.
Clean burner areas and heating surfaces
Checking connection and seal locations of water filled parts
Replacing wear parts (see
Spare parts list
)
Caution
Only original spare parts may be used!
Check safety valves for correct function.
Check operating pressure and, possibly, fill in water
Bleed the heating system and return the gravity lock to operating
position.
Final check and documentation of performed service work
See
More detailed information about the inspection and service of heat
generators is included in BDH/ZVSHK Info sheet 14.
Important
In order to guarantee optimum operation of the heat pump we
recommend concluding a service contract.
10 Maintenance
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