Installation and operating instruction
Oil condensing boiler WTC-OB 18-B
5 Installation
83311002 1/2018-03 La
24-132
5.2 Hydraulic connection
Flush the heating system with at least twice the total system content.
Contaminants are removed.
Close flow and return (install shut off devices).
Fit safety valve.
Fit inlet and outlet tap.
Fit expansion vessel.
If necessary fit sludge separator in the return line.
Image: WTC-OB 18-B VERS. W-PEA
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1
Heating circuit flow G1½
2
Heating circuit return G1½
3
Safety vale G¾
4
DHW circuit flow G1
5
DHW circuit return G1
6
Inlet and outlet tap / expansion vessel G¾