Operating instructions

Heatmax Furnace Installation and Operation Manual
47
The installation of the air return option connected to the blower housing would improve the
air circulation throughout the house (see Appendix 3: Fresh air return adapter
(AC01392)). The use of the air filter option is also recommended. The filter option will
significantly reduce dust circulation within the hot air duct and will prevent obstruction of
the blower (see Appendix 2: Optional filter (AC01390)).
The installer is responsible of the performance of the distribution ducts and the air
return system. It will have a direct effect on the ability of the fan to distribute heat
efficiently throughout the house. The number, size and length of the ducts of the
distribution system and return air will vary depending on the configuration and
characteristics of each house.
N.B.: The furnace air jacket is not totally air tight. It is normal to detect some air
leaks at the jacket’s joints.