Operating instructions

Heatmax Furnace Installation and Operation Manual

Appendix 3: Fresh air return adapter (AC01392)

The optional air return adapter (AC01392) can be added to the furnace blower box to

increase the efficiency of your system. This option allows you to take in the fresh air from

the rooms connected to the return system and bring it back towards the furnace to be

heated. This option can be installed on either one of the 3 sides of the blower box.

Complete installation instruction can be found in the instruction booklet provided when

purchasing this option.

1 fresh air return adapter 2 caps 1 filter

N.B.: TO ENSURE ADEQUATE STATIC PRESSURE, THE SYSTEM SHOULD BE

BUILT IN A WAY THAT THE VOLUME OF COLD AIR RETURN IS AT LEAST EQUAL

OR SLIGHTLY HIGHER THAN THE VOLUME OF THE HOT AIR DISTRIBUTION.