Lennox ML196UHE Installation Instructions Manual page 15

Use PVC primer and solvent cement or ABS solvent ce-
ment meeting ASTM specifications, refer to TABLE 2.
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
Vent Pipe
Input Size
Dia. in.
1-1.2
6
2
030,
045
2-1/2
3
1-1/2
6
2
070
2-1/2
3
2
090 2-1/2
3
2
110 2-1/2
3
135 3
NOTE - Standard Terminations do not include any vent pipe or elbows external to the structure. Any vent pipe or elbows external to the structure must be included in total
vent length calculations. See vent length tables.
* Kits must be properly installed according to kit instructions.
1Requires field-provided outdoor 1-1/2" exhaust accelerator.
2Concentric kits 71M80 and 44W92 include 1-1/2" outdoor accelerator, when uses with 030, 045 and 070 input models. When using 1-1/2 inch vent pipe, transistion to 2"
pipe before installing concentric kit.
3 Flush mount kits 51W11 and 51W12 includes 1-1/2 in. outdoor exhaust accelerator, required when used with 030, 045, 070 and 090 input models. When using 1-1/2"
vent pipe, transition to 2" pipe before installing flushmount kit.
4 Termination kits 30G28, 44W92, 4493 and 81J20 are certified to ULC S636 for use in Canada only.
5 See table 8 for vent accelerator requirements.
6 Requires field provided 2" to 1-1/2" reducer.
OUTDOOR TERMINATION USAGE*
STANDARD
Wall Kit
Flush
Mount Kit
2 inch
51W11 22G44
(US) (US)
51W12 30G28
4
(CA) (CA)
YES YES
3
YES YES
3
YES YES
3
YES YES
3
YES YES
3
YES YES
3
YES YES
3
YES YES
3
YES
3
YES
3
YES
3
YES
YES
YES
YES
inside socket surface of fitting and male end of pipe to
depth of fitting socket.
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 manu-
facturer 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 3
3 inch
Field
44J40 (US)
Fabricated
81J20
4
(CA)
YES YES
1 5
YES YES
1 5
YES YES
1 5
YES YES
1 5
YES YES
1 5
YES YES
1 5
YES YES
1 5
YES YES
1 5
YES YES
5
YES YES
5
YES YES
5
YES YES
5
YES YES
5
YES YES
5
YES YES
5
Page 15
CONCENTRIC
1-1.2 inch 2 inch
71M80 69M29
(US) (US)
44W92 44W92
4 4
(CA) (CA)
YES
2
YES
2
YES
2
YES
2
YES
2
YES
2
YES
2
YES
2
YES
YES
YES
YES
YES
YES
YES
3 inch
60L46 (US)
44W93
4
(CA)
YES
YES
YES
YES
YES
YES
YES