Lennox ML195UH Installation Instructions Manual page 14

CAUTION
Solvent cements for plastic pipe are flammable liq-
uids 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.
TABLE 2
PIPING AND FITTINGS SPECIFICATIONS
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
ML195UH 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 2. As an alter-
nate, use all purpose cement, to bond ABS, PVC, or CPVC
pipe when using fittings and pipe made of the same materi-
D1785
als. Use transition solvent cement when bonding ABS to ei-
F891
ther PVC or CPVC.
D2466
Low temperature solvent cement is recommended during
F441
cooler weather. Metal or plastic strapping may be used for
F438
vent pipe hangers. Uniformly apply a liberal coat of PVC
D2241
primer for PVC or use a clean dry cloth for ABS to clean in-
F442
side socket surface of fitting and male end of pipe to depth
F628
of fitting socket.
D1527
Canadian Applications Only − Pipe, fittings, primer
D2468
and solvent cement used to vent (exhaust) this ap-
D2661 pliance must be certified to ULC S636 and supplied by a
single manufacturer as part of an approved vent (ex-
D2665
haust) system. When bonding the vent system to the fur-
nace, use ULC S636 approved One−Step Transition Ce-
ASTM
ment to bond the pipe to the flue collar, or to bond the 90°
SPECIFICATION
elbow or reducing 90° elbow to the flue collar. In addi-
F656
tion, the first three feet of vent pipe from the furnace flue
D2564
collar must be accessible for inspection.
F493
D2235
D2564, D2235, F493
D3138
MARKING
ULCS636
Page 14
IMPORTANT