Installation and operating instruction
Oil condensing boiler WTC-OB 18-B
12 Project planning
83311002 1/2018-03 La
105-132
Elevated oil level
If the suction line is leaking the tank can be siphoned dry. An electric anti siphon
valve
1
can prevent this.
Observe manufacturers instructions regarding pressure loss caused by anti si-
phon valve.
The anti siphon valve must close with a delay and show a pressure relief towards
the oil storage tank.
Maintain height differences:
max 4.6 m between oil level and anti siphon valve,
on single pipe system max 8 m between anti siphon valve and automatic de-
aerator.
max 8 m
max 4,6 m
1
Oil level in the filter cup
Due to various factors (e g filter resistance, pressure conditions), the oil level in the
filter cup can drop to the lower edge of the filter element. Reliable operation of the
system is nevertheless guaranteed, as the interior of the filter insert is completely
filled with oil.