PB Heat Peerless Boilers GM Series, Installation, Operation & Maintenance Manual

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17
GAS PIPING
8. Disconnect the boiler and its individual shut-off
valve from the gas supply piping system during any
pressure testing of that system at test pressure in
excess of 1/2 psig (3.5 kPa).
Isolate the boiler from the gas supply piping system
by closing its individual service valve during any
pressure testing of the gas supply piping system at
test pressure equal to or less than 1/2 psig (3.5 kPa).
9. Minimum permissible natural gas supply pressure
Inches Water Column (kPa)]:
Minimum permissible LP gas supply pressure is
11.0” w.c. (2.7 kPa).
10. Maximum permissible supply pressure to the boiler
[Inches Water Column (kPa)]:
All models 13.5” (3.4 kPa)
Figure 5.2: Gas Connection to Boiler - Internal
4.5
GM-05
In.
1.1
kPa
4.5
GM-06
In.
1.1
kPa
GM-07
4.6
In.
1.1
kPa
4.9
GM-08
In.
1.2
kPa
Do not subject the gas valve to more than 1/2 psi
pressure (3.5 kPa). Doing so may damage the valve.
⚠
CAUTION