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Re: [VAL] Heater
The most common replacement for those furnaces is a current model NT
series by Suburban.
The smaller coaches would take the NT 22 while the larger coaches would
need an NT 30 SP.
The smaller NT 22 is a same sized replacement while the NT 30 is a
redesigned and smaller replacement.
Most shops will block the new furnace up to match the holes through the
skin and fabricate an adapter to fit the bottom of the furnace to the in
floor ducting.
Be sure to replace the thermostat included with the furnace.
You may have to extend the gas line connection from on side of the
furnace to the other. This is best done with a flex hose and some brass
fittings.
It is not recommended to oversize a furnace. The ducting is designed to
handle only so much air volume without having problems with back pressure.
Charlie