14
B
A
Fig. 5
Check gaskets
A
and hose connection
B
for leaks.
Danger
Leaks can result in a risk of poisoning through
escaping flue gas.
Check gaskets carefully.
Closing the boiler door
1.
Tighten the screws on the boiler door evenly and
diagonally. Torque: 20 Nm
2.
Mount the gas supply pipe and check for tightness.
Checking the thermal insulation
Check the thermal insulation fit and realign if required.
Checking the water quality
Enter the amount of top-up water and the total hard-
ness of the feed and boiler water into the table in the
appendix on page 30.
For water quality requirements, see page 28.
The total hardness of the feed and top-up water must
not exceed the standard values specified by VDI 2035
(see page 28).
The pH value should be between 8.2 and 9.5.
Cleaning and reconnecting the condensate drain system
The condensate drain, siphon, neutralising system and
all hoses and pipes between them are part of the con-
densate drain system.
Note
Clean the inside of the condensate drain system at
least annually.
Commissioning, inspection, maintenance
Cleaning the sight glass in the boiler door
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