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 CAUTION
Solvent cements for plastic pipe are ammable  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 re 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) D1785
Schedule 40 PVC (Cellular Core Pipe) F891
Schedule 40 PVC (Fittings) D2466
Schedule 40 CPVC (Pipe) F441
Schedule 40 CPVC (Fittings) F438
SDR-21 PVC or SDR-26 PVC (Pipe) D2241
SDR-21 CPVC or SDR-26 CPVC (Pipe) F442
Schedule 40 ABS Cellular Core DWV 
(Pipe)
F628
Schedule 40 ABS (Pipe) D1527
Schedule 40 ABS (Fittings) D2468
ABS-DWV (Drain Waste & Vent) (Pipe & 
Fittings)
D2661
PVC-DWV (Drain Waste & Vent) Pipe & 
Fittings)
D2665
PRIMER & SOLVENT CEMENT
ASTM 
SPECIFICATION
PVC & CPVC Primer F656
PVC Solvent Cement D2564
CPVC Solvent Cement F493
ABS Solvent Cement D2235
PVC/CPVC/ABS All Purpose Cement 
For Fittings & Pipe of the same material
D2564, D2235, 
F493 
ABS to PVC or CPVC Transition Solvent
Cement
D3188
CANADA PIPE & FITTING & SOLVENT
CEMENT
MARKING
PVC & CPVC Pipe and Fittings
ULCS636
PVC & CPVC Solvent Cement
ABS to PVC or CPVC Transition 
Cement
POLYPROPYLENE VENTING SYSTEM
PolyPro® by Duravent
InnoFlue® by Centrotherm
 IMPORTANT
EL296UHV 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 ttings in the unit.
Use PVC primer and solvent cement or ABS solvent ce-
ment meeting ASTM specications, refer to Table 2. As an 
alternate, use all purpose cement, to bond ABS, PVC, or 
CPVC pipe when using ttings 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 
inside  socket  surface  of  tting  and  male  end  of  pipe  to 
depth of tting socket.
Canadian Applications Only - Pipe, ttings, primer and 
solvent cement used to vent (exhaust) this appliance must 
be certied to ULC S636 and supplied by a single manu-
facturer as part of an approved vent (exhaust) system. In 
addition, the rst three feet of vent pipe from the furnace 
ue collar must be accessible for inspection.