Product Manual

HeatPack Furnace Installation and Operation Manual
40
Appendix 3: Optional Air return adapter (AC01392)
The optional air return adapter (AC01392) can be added to the furnace 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 sides or at the back of the blower box. Complete
installation instructions can be found in the instruction booklet provided with his option.
1 fresh air return adapter
2 caps
1 filter
CAUTION
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.
NOTE
TAKE NOTE THAT THE STATIC PRESSURE CALIBRATION IN THE SYSTEM
SHOULD BE RE-DONE AFTER INSTALLING FILTERS.