Gas Pressure.4; Electrical; Thermostat & Location.4.5 - Mr. Heater MH40 NG Installation And Operating Instructions Manual

NOTE:
1. ONLY USE A PIPE COMPOUND
WHICH IS RESISTANT TO
LIQUIFIED GASES ON L.P.
INSTALLATIONS.
2. FITTINGS SHOWN ARE NOT
INCLUDED WITH HEATER.
FIGURE 3. TYPICAL PIPING INSTALLATION
7. GAS PRESSURE
When a higher than the maximum recommended gas pressure is being maintained at the main gas
line, a separate regulator must be installed ahead of the heater Refer to Table 1 for maximum allow¬
able pressure for stated heater model and gas.
See heater rating plate for minimum gas supply pressure Tor the Purpose of Input Adjustment."
On a multiple heater installation it may be possible to use one large capacity regulator or an individual
regulator for each heater. Nevertheless, it is recommended practice to make the entire pipe system a
loop.
Contact your local representative or the factory for proper gas pressure reducing design stage.
8. ELECTRICAL
NEVER CONNECT POWERPILE GAS VALVE OR THERMOSTAT TO LINE VOLTAGE OR A
TRANSFORMER.
9. THERMOSTAT & LOCATION
Make sure that the electrical characteristics of the thermostat match those of the heater controls. For
best results thermostat should be positioned 5 ft. above floor where air can circulate freely around it.
DO NOT MOUNT directly to cold-side wall, in direct drafts, or directly beneath the infra-red
heater.
Ensure that the selected thermostat location meets all of the above requirements. Refer to the in¬
structions that come with the thermostat for additional general information and mounting instructions.
If the wall is of stud and wallboard construction, then use the #6 by 1 inch sheet metal screws, in¬
cluded with the thermostat, and mount the thermostat in the selected location.
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