55
20. Maintenance Instructions (continued)
Cleaning the water side
Use detergents that dissolve CaCO3. Leave to act for a
short time and then rinse.
Make sure that the detergent does not remain inside the
e
xchanger.
Unscrew the lower part of the condensate trap and clean it.
Fill it with water and replace.
After carrying out the maintenance operation, fill the heating
circuit to a pressure of approximately 1.5 bar and release the
air from the system. Also fill the domestic hot water system.
- Place the boiler in operation.
- If necessary, release the air again from the heating
system.
- Check the settings, seals and the correct functioning of
the system for expelling the products of combustion and
drawing combustion air.
- Check the settings and correct operation of all the
control, regulation and monitoring components.
- Check that the burner ignites properly and carry out a
visual check of the burner flame.
- Check that the 3 bar safety valve is operating correctly.
- Check the operation of the time control and room
thermostat (if fitted).
N
OTE:THESE CHECKS ARE NOT EXHAUSTIVE
ONCE THE BOILER HAS BEEN SERVICED IT IS NECESSARY TO
COMPLETE THE
SERVICE INTERVAL RECORD (SECTION 25, PAGE
61)
20.3 Operational test
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