Joint Cementing Procedure - Lennox DAVE SIGNATURE SL297UHNV Installation Instructions Manual

Vent Pipe
Input Size
Dia. in.
2
040
3
2
060
3
2
080
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 040 and 060 input models.
3 Flush mount kits 51W11 and 51W12 includes 1-1/2 in. outdoor exhaust accelerator, required when used with 040, 060 and 080 input models.
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.

Joint Cementing Procedure

All cementing of joints should be done according to the
specifications outlined in ASTM D 2855.
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 fitting 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 fit joint and mark depth of fitting 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 fitting and male end of pipe to depth of
fitting socket.
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
3
YES
3
TABLE 3
Wall Ring
Kit
3 inch 2 inch
44J40
Fabricated
(US)
15F74
81J20
4
(CA)
YES YES
1 1 5
YES YES
1 1 5
YES YES
1 1 5
YES YES
1 1 5
YES YES
5
YES YES
5
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 fitting. 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.
8 - After assembly, wipe excess cement from pipe at
end of fitting socket. A properly made joint will show
a bead around its entire perimeter. Any gaps may
indicate an improper assembly due to insufficient
solvent.
9 - Handle joints carefully until completely set.
Page 12
CONCENTRIC
1-1.2 inch 2 inch
Field
71M80 69M29
(US) (US)
44W92 44W92
4 4
(CA) (CA)
YES YES
2
YES YES
2
YES YES
2
YES YES
2
YES YES
YES YES
3 inch
60L46 (US)
44W93 (CA)
4
YES
YES