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Installation and operating instruction
Hydraulic unit WWP LS 8 ... 16-B
9 Servicing
83306902 2/2017-05 La
75-88
9.4 Replace safety valve
Observe notes on servicing [ch. 9.1].
Removing
Close flow and return shut off devices of heating circuit.
Close flow and return shut off devices of hot water circuit.
Drain hydraulic unit using the outlet tap.
Hydraulic unit is depressurised.
Remove drainage hose
2
.
Remove safety valve
1
.
2
1
Refitting
Install the safety valve using suitable sealing material.
Connect outlet hose.