Product Manual

HeatPack Furnace Installation and Operation Manual
9
4 Authorized and non-authorized installation configuration
4.1 Authorized installation configuration in Canada and United States
The wood furnace is the only appliance connected to the hot air distribution duct system
and air return duct system.
4.2 Authorized installation configuration in United States only
4.2.1 Parallel installation
(A) represents the wood furnace.
(B) represents the gas, oil or
electric existing furnace.
Power input (B) should be equal to
or greater than (A).
Each furnace must have its own
air return duct system.
The highest clearances of (A and
B) hot air distribution ducts must
be respected.
Static pressure of (A) must be
adjusted to 0.20 in. W.C. (50 Pa).
A backflow damper must be
installed to prevent air return in
one or the other of the two furnaces and to ensure that hot air will flow into the house and
will not return through the plenum of the other furnace. Depending on your system
configuration, it is possible that more than one register is required to prevent air returns in
the different hot air ducts.