3.6 Installing burner to gas supply line
Supply line
If necessary, decrease the gas pressure with pressure regulating assembly. The gas
supply line after the pressure regulator must be of the same size or one size larger
than the burner’s gas pressure regulating assembly. The gas valve capacity adjustment
disc must be upwards. In installation, observe the valve manufacturer’s instructions.
As standard, the gas connection to the burner is from the right side. The valves shown
in the following example may vary from those delivered.
B352U ver. 3
● Install gas pipings according to the regulations of local public
authority.
● Check that there is a separate filter before gas equipment.
● Prior to installing gas pressure regulator block to piping, use
compressed air to blow supply piping clean.
● Clean and check piping prior to the installation of gas pressure
regulating assembly.
● Install gas valve so that no mechanical stress is directed to it.
● Vent gas piping before the first start-up.
To vent gas pipe:
1. Lead pipe to an open outdoor location either from the gas valve or from the blow-off
valve fixed to the pipe.
2. Open the blow-off valve.
3. Open the ball valve slowly in main supply line and fill piping with gas.
4. Close the blow-off valve.
3.7 Installing gas pressure regulating assembly
Installing pressure regulator
Consider the following factors when selecting pressure regulator:
M5164 1640EN
25 (95)
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