Installation - Lennox EL296DFV Series Unit Information

II-PLACEMENT AND INSTALLATION
Pipe & Fittings Specifications
All pipe, fittings, primer and solvent cement must conform
with American National Standard Institute and the Ameri-
can Society for Testing and Materials (ANSI/ASTM) stan-
dards. 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, strati-
fication, or separation that cannot be removed by stirring.
Refer to the table 18 below for approved piping and fitting
materials.
CAUTION
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.
TABLE 18
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
POLYPROPYLENE VENTING SYSTEM
PolyPro® by Duravent
InnoFlue® by Centrotherm
UL 1738 CERTIFIED GAS VENTING SYSTEM
IPEX System1738 Schedule 40 PVC
Pipes and Fittings
IPEX System1738 PVC FGV Cement &
Primer
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.
D1785
F891
Use PVC primer and solvent cement or ABS solvent ce-
ment meeting ASTM specifications, refer to TABLE 18.
D2466
As an alternate, use all purpose cement, to bond ABS,
F441
PVC, or CPVC pipe when using fittings and pipe made of
F438
the same materials. Use transition solvent cement when
D2241
bonding ABS to either PVC or CPVC.Low temperature
F442
solvent cement is recommended during cooler weather.
Metal or plastic strapping may be used for vent pipe hang-
F628
ers. Uniformly apply a liberal coat of PVC primer for PVC
or use a clean dry cloth for ABS to clean inside socket
D1527
surface of fitting and male end of pipe to depth of fitting
D2468
socket.
D2661
Canadian Applications Only - Pipe, fittings, primer and
solvent cement used to vent (exhaust) this appliance must
D2665
be certified to ULC S636 and supplied by a single manu-
facturer as part of an approved vent (exhaust) system. In
ASTM
addition, the first three feet of vent pipe from the furnace
SPECIFICATION
flue collar must be accessible for inspection.
F656
Venting Options
D2564
The EL296DFV is shipped with vent exhaust / air intake
F493
connection at the top cap. See FIGURE 19. Using parts
D2235
provided, the furnace may be field modified to have these
D2564, D2235,
connections on the right side of the furnace cabinet. See
F493
FIGURE 20 and follow the steps below. For left side vent-
ing order kit 87W73.
D3188
Page 38
TABLE 18 Continued
IMPORTANT
1 - Remove inner blower door.
2 - Loosen hose clamps which attach rubber fittings to
the white PVC pipes inside the vestibule area. See
FIGURE 18.
3 - Loosen the clamp which secures the pipes at the
blower deck. See FIGURE 18.
MARKING
ULCS636
UL1738