PEERLESS GM Installation, Operation & Maintenance Manual page 17

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).
CAUTION
Do not subject the gas valve to more than 1/2 psi
pressure (3.5 kPa). Doing so may damage the valve.
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)]:
GM-05
In.
Standing Pilot
4.8
Intermittent
4.5
Ignition
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)
GM-06 GM-07 GM-08
In.
kPa In. kPa kPa In.
1.2 5.5 1.4 ---- ---- ----
1.1 4.5 1.1 4.6 1.1 4.9
Figure 5.2: Gas Connection to Boiler - Internal
kPa
----
1.2
GAS PIPING
15