Installation and operating instruction
Gas burner WG40…/1-A ZM-LN
7 Commissioning
83300002 1/2019-02 La
42-128
7.1.3 Check soundness of gas valve train
Carry out soundness test:
prior to commissioning,
after all service and maintenance work.
First test phase
Second and third test phase
Test pressure
100 mbar ±10 %
100 mbar ±10 %
Waiting time for pressure equal-
isation
5 minutes
5 minutes
Test time
5 minutes
5 minutes
Permissible pressure loss
1 mbar
5 mbar (¾" … 2" )
1 mbar (DN 65 … 150)
First test phase
Only in conjunction with W-MF and gas connection pressure > 150 mbar
In the first test phase, the testing device must be connected to the pressure regu-
lator.
Check soundness of gas valve train, see additional sheet (print No. 835109xx).
In the first phase the valve train section from the gas isolating valve up to the first
valve of the multifunction assembly is tested.
Switch off burner.
Close gas isolating valve.
Connect test equipment.
Open test point between valve 1 and valve 2.
Carry out test to table.
Second test phase
In the second phase the interspace in the multifunction assembly is tested.
Connect test equipment.
Carry out test to table.
Third test phase
In the third phase the valve train section from the multifunction assembly up to the
gas butterfly valve is tested.
Remove mixing head [ch. 9.3].
Fit blanking plate
4
.
Fit mixing head.
Connect test equipment.
Carry out test to table.
Close all test points.
Remove blanking plate.
