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circulate room air across the furnace chamber where it is heated. The blower then forces the hot air into the living area either
through a duct system or through a front grille on the furnace cabinet on direct discharge models.
Suburban furnaces operate on 12-volt DC power which is supplied either by a 12-volt battery or a converter system. A
recreational vehicle furnace that is specifically designed for “park model” trailers operates on 120 volts AC. These are designed
and tested under the same standards as the 12-volt models.
Suburban forced draft combustion furnaces used in recreational vehicles are designed for use with Propane gas. Although a few
recreational vehicle furnaces are approved for use with natural gas, one should never attempt to convert such a unit to natural
gas unless the conversion is approved by the manufacturer of the furnace.
Gas Supply Pressure Requirements
Line Pressure:
Minimum 11" WC*, Maximum 14" WC
*WC - water column
Voltage Requirements
Voltage DC: 12 volt D.C.
Minimum 10.5 volts D.C., Maximum 13.5 volts D.C.
Service Tools Required
Manometer gauge/ U-Tube
Volt ohm meter capable of testing above 15 amps
Module board tester #641511
Gas leak detector OR approved leak check liquid
Assorted wrenches
Assorted hand tools
Safety glasses
Suburban
RV FURNACES
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