Product Manual

HeatPack Furnace Installation and Operation Manual

6 The exhaust system

WARNING

DO NOT INSTALL A MANUAL DAMPER IN THE EXHAUST PIPE ON THIS FURNACE.

CAUTION

BEFORE CONNECTING THE FURNACE TO THE EXHAUST SYSTEM, SURE THAT

THE EXHAUST PIPE AND/OR THE EXCHANGERS OF THE FURNACE ARE FREE OF

ALL ITEMS.

6.1 The chimney

The furnace must be connected to a factory-built metal chimney that complies with UL 103

HT (USA) or ULC S629 (Canada).

 Recommended inner diameter: 6" (152 mm).

 A chimney having a diameter of at most 7" (178 mm) is permitted, if it allows the proper

venting of combustion gases and that such application is verified and authorized by a

qualified installer. Otherwise, the diameter of the flue must be reduced to 6" (152 mm)

by the use of a stainless steel liner.

6.1.1 Factory-built metal chimneys

 To be suitable, a factory-built metal chimney also

called “high temp” chimney, must comply with UL

103 HT (U.S.A.) or ULC S629 (Canada).

 Use only components intended for the brand and

model of chimney you are using.

 Never substitute parts from other chimney

brands.

 Never fabricate your own components.

 The chimney must be a type suitable for solid

fuel.

 To be safe and effective, the chimney must be

installed exactly in accordance with the chimney

manufacturer’s instructions.