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ManualsBrandsDrolet ManualsFurnacesHeat Commander Wood Furnace — 310,000 BTU, EPA Certified
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Heat Commander Furnace Installation and Operation Manual
39
2- From the thermostat connected to the existing furnace, connect 2 new wire (B) on the R
and W terminals of your thermostat and fix them to the terminal identified "I" (interlock) of
the parallel Add-On furnace.
When the wood furnace receives the signal from the existing furnace thermostat calls for
heat, combustion air controls will close slowly, the wood furnace burn rate will reduce to is
minimum. After the existing furnace thermostat is satisfied, the wood furnace will return
under the control of its own thermostat.
USA only
EXISTING
FURNACE
PARALLEL
ADD-ON
FURNACE