Mr. Heater GAS FIRED INFRA-RED WORKSHOP HEATER MH25LP / MH25NG Operation And Owner's Manual page 9

ments and piping requirements are fulfilled, install piping
as follows:
A. In accordance with the above piping requirements,
assemble piping, sediment trap, shutoff valve, and
necessary fittings. Tighten all components securely.
WARNING: Failure to ensure that male threads on
pipe to be installed into gas valve meet the require-
ments of Figure 6 may cause gas valve damage,
distortion and malfunction.
B. Install a threaded nipple, prepared in accordance
with paragraph 3.2 into gas valve.
C. Connect gas piping to nipple installed in the gas
valve.
SUPPLY
LINE
SHUTOFF
VALVE
1/2"
TEE
3"
CAP
Model # MH25NG/LP
RIGID PIPE WITH
UNION OR A FLEXIBLE
CONNECTOR TO HEATER
NIPPLE
Figure 7. Typical Piping Installation
HS25NG/LP
WARNING: When testing gas piping use only a soap
and water solution. Do not use a match or other flame
for leak testing. If during leakage check gas is
smelled, turn off the gas supply and ventilate building.
D. Ensure the building is properly ventilated. Without
lighting the pilot light of the heater, open the gas
supply valve and pressurize the piping up to the
heater's gas valve.
E. Using a brush, apply a soap and water solution to all
connections and look for bubbles indicating a leak. If
a leak is detected, turn off gas supply and tighten
connections. Retest and tighten connections until no
more leaks are found.
NOTE:
1. ONLY USE A PIPE COMPOUND
2. FITTINGS SHOWN ARE NOT
9
Installation instructions and Owner's Manual
WHICH IS RESISTANT TO
LIQUIFIED GASES ON LP
INSTALLATIONS.
INCLUDED WITH HEATER.
HEATER