4 Assembly [specialist]
B-6
993x4203-mub-ml – V01
2017/01
Keep in mind that the flow is connected to the pipe connection marked "V" and the return
is connected to the pipe connection marked "R". The flow and the return cross each other
(see figure).
All connections marked "V" must be connected to the flow chamber, all connections marked "R"
must be connected to the return chamber.
Flow
Flow
Return
Return
Boiler connection
Heating circuit connection
