Mr. Heater MH25NG Instrucciones De Funcionamiento Y Manual Del Propietario página 9

3.3 Piping INSTALLATION
While ensuring that all of the above gas supply
requirements 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
requirements 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.
Mr. Heater Gas Fired Infrared Workshop Heater
C. Connect gas piping to nipple installed in the gas
valve.
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.
Figure 7. Typical Piping Installation
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Operating Instructions and Owner's Manual