Operating instructions

Heatmax Furnace Installation and Operation Manual
46
The first vertical start-off pipe should be no less than 12 inch. The minimum clearance to
combustible material of the first 72 inch horizontal duct run is 2 and 1 inch for additional
horizontal length. See image in Section 7.3.
Hot air start-off adapter and block-off plate Installation:
Warning: Wear gloves to perform the following steps since edges of adapters and
plates may be sharp.
Once the hot air outlet configuration has been chosen, install the start-off adapters and the
block-off.
1. Cut a notch in the flange of both adapter A and slightly fold down one side of the flange
to facilitate installation as shown below.
2. Align the notch previously made on the adapter (A) with the one of the selected hot air
outlet on the top of the furnace. Insert the flange under the furnace top, then turn the
adapter until the flange is completely inserted and rotates freely. Repeat the above
procedure for the second adapter.
3. Using the provided screws (C), install the block-off plates (B) on the 2 remaining hot air
outlets.