Lennox ML296UHV Series - Page 22

Page 22
TABLE 12
OUTDOOR TERMINATION USAGE*
Input Size
Vent Pipe Dia.
in.
STANDARD CONCENTRIC
Flush Mount
Kit
Wall Kit
Field
Fabricated
1-1.2 inch 2 inch 3 inch
2 inch 3 inch
71M80 (US)
444W92 (CA)
69M29 (US)
444W92 (CA)
60L46 (US)
444W93 (CA)
51W11 (US)
51W12
(CA)
22G44 (US)
430G28 (CA)
44J40 (US)
481J20 (CA)
045
6
1-1/2
3
YES
YES
1
YES
5
YES
2
YES
2
3
YES
YES
1
YES
5
YES
2
YES
2-1/2
3
YES
YES
1
YES
5
YES
2
YES
3
3
YES
YES
1
YES
5
YES
2
YES
070
6
1-1/2
3
YES
YES
1
YES
5
YES
2
YES
2
3
YES
YES
1
YES
5
YES
2
YES
2-1/2
3
YES
YES
1
YES
5
YES
2
YES
3
3
YES
YES
1
YES
5
YES
2
YES
090
2
3
YES
YES
5
YES
YES YES
2-1/2
3
YES
YES
5
YES
YES YES
3
3
YES
YES
5
YES
YES YES
110
2 YES YES
5
YES
YES YES
2-1/2 YES YES
5
YES
YES YES
3 YES YES
5
YES
YES YES
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.
1 Requires eld-provided outdoor 1-1/2” exhaust accelerator.
2 Concentric kits 71M80 and 44W92 include 1-1/2” outdoor accelerator, when used with 045 and 070 input models. 1-1/2 in. pipe must be transitioned to 2 in. when used
with a concentrci kit,
3 Flush mount kits 51W11 and 51W12 includes 1-1/2 in. outdoor exhaust accelerator, required when used with 045, 070 and 090 input models. 1-1/2 in. pipe must be
transitioned to 2 in. pipe when used with the ushmount kit.
4 Termination kits 30G28, 44W92, 44W93 and 81J20 are certied to ULC S636 for use in Canada only.
5 See TABLE 17 for vent accelerator requirements.
6 2 in. pipe to 1-1/2 in. reducer required and must be eld provided.
Joint Cementing Procedure
DANGER
DANGER OF EXPLOSION!
Fumes from PVC glue may ignite during system
check. Allow fumes to dissipate for at least 5 minutes
before placing unit into operation..
1 - Measure and cut vent pipe to desired length.
2 - Debur and chamfer end of pipe, removing any
ridges or rough edges. If end is not chamfered,
edge of pipe may remove cement from tting socket
and result in a leaking joint.
NOTE - Check the inside of vent pipe thoroughly for
any obstruction that may alter furnace operation.
3 - Clean and dry surfaces to be joined.
4 - Test t joint and mark depth of tting on outside of
pipe.
5 - - Uniformly apply a liberal coat of PVC primer for
PVC or use a clean dry cloth for ABS to clean
inside socket surface of tting and male end of
pipe to depth of tting socket.
NOTE - Time is critical at this stage. Do not allow
primer to dry before applying cement.
6 - Promptly apply solvent cement to end of pipe and
inside socket surface of tting. Cement should be
applied lightly but uniformly to inside of socket. Take
care to keep excess cement out of socket. Apply
second coat to end of pipe.
7 - Immediately after applying last coat of cement to
pipe, and while both inside socket surface and end
of pipe are wet with cement, forcefully insert end of
pipe into socket until it bottoms out. Turn PVC pipe
1/4 turn during assembly (but not after pipe is fully
inserted) to distribute cement evenly. DO NOT turn
ABS or cellular core pipe.
NOTE - Assembly should be completed within 20
seconds after last application of cement. Hammer
blows should not be used when inserting pipe.