3 Product description
12
9932073x-mub-en – V14
2020/04
3.2.2
Check valve
The HeatBloC
®
is equipped with a check valve (D-1, opening pressure 200 mm wc) in the
return pipe. It can be opened manually.
Operation
During operation, the mark must be directed to "Z".
The check valve is closed.
Flow only in the direction of the arrow.
Filling, emptying, bleeding
For filling, emptying and bleeding the mark must be
directed to "A".
The check valve is open.
Flow in both directions.