Placement And Installation - COMFORT-AIRE Century GUH97M Service Manual

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Placement and Installation

All pipe, fittings, primer and solvent cement must conform
with American National Standard Institute and the American
Society for Testing and Materials (ANSI/ASTM) standards.
The solvent shall be free flowing and contain no lumps,
undissolved particles or any foreign matter that adversely
affects the joint strength or chemical resistance of the
cement. The cement shall show no gelation, stratification,
or separation that cannot be removed by stirring. Refer to
the Table 19 for approved piping and fitting materials.
Solvent cements for plastic pipe are flammable liquids
and should be kept away from all sources of ignition.
Do not use excessive amounts of solvent cement when
making joints. Good ventilation should be maintained to
reduce fire hazard and to minimize breathing of solvent
vapors. Avoid contact of cement with skin and eyes.
IMPORTANT
GUH97M exhaust and intake connections are made
of PVC. Use PVC primer and solvent cement
when using PVC vent pipe. When using ABS vent
pipe,
use transitional solvent cement to make
connections to the PVC fittings in the unit.
Use PVC primer and solvent cement or ABS solvent
cement meeting ASTM specifications, refer to Table 19.
As an alternate, use all purpose cement, to bond ABS,
PVC, or CPVC pipe when using fittings and pipe made of
the same materials. Use transition solvent cement when
bonding ABS to either PVC or CPVC.
Low temperature solvent cement is recommended during
cooler weather. Metal or plastic strapping may be used for
vent pipe hangers. Uniformly apply a liberal coat of PVC
primer for PVC or use a clean dry cloth for ABS to clean
inside socket surface of fitting and male end of pipe to
depth of fitting socket.
508146-01
CAUTION
Canadian Applications Only - Pipe, fittings, primer and
solvent cement used to vent (exhaust) this appliance
must be certified to ULC S636 and supplied by a single
manufacturer as part of an approved vent (exhaust)
system. In addition, the first three feet of vent pipe from the
furnace flue collar must be accessible for inspection.
Table 20 lists the available exhaust termination kits.
Schedule 40 PVC (Pipe)
Schedule 40 PVC (Cellular Core Pipe)
Schedule 40 PVC (Fittings)
Schedule 40 CPVC (Pipe)
Schedule 40 CPVC (Fittings)
SDR-21 PVC or SDR-26 PVC (Pipe)
SDR-21 CPVC or SDR-26 CPVC (Pipe)
Schedule 40 ABS Cellular Core DWV
(Pipe)
Schedule 40 ABS (Pipe)
Schedule 40 ABS (Fittings)
ABS-DWV (Drain Waste & Vent)
(Pipe & Fittings)
PVC-DWV (Drain Waste & Vent)
Pipe & Fittings)
PRIMER & SOLVENT CEMENT
PVC & CPVC Primer
PVC Solvent Cement
CPVC Solvent Cement
ABS Solvent Cement
PVC/CPVC/ABS All Purpose Cement For
Fittings & Pipe of the same material
ABS to PVC or CPVC Transition Solvent
Cement
CANADA PIPE & FITTING & SOLVENT
CEMENT
PVC & CPVC Pipe and Fittings
PVC & CPVC Solvent Cement
ABS to PVC or CPVC Transition Cement
POLYPROPYLENE VENTING SYSTEM
PolyPro® by Duravent
InnoFlue® by Centrotherm
ECCO Polypropylene Vent
Table 19. Piping and Fittings Specifications
Issue 2051
D1785
F891
D2466
F441
F438
D2241
F442
F628
D1527
D2468
D2661
D2665
ASTM
SPECIFICATION
F656
D2564
F493
D2235
D2564, D2235,
F493
D3138
MARKING
ULCS636
ULC-S636
ULC-S636
ULC-S636
TM
Page 31 of 70

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