Lennox International Inc EL296UHE, Elite Series Gas Furnace Joint Cementing Procedure, Danger

Models: EL296UHE Elite Series Gas Furnace

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TABLE 2

Joint Cementing Procedure CAUTION

Solvent cements for plastic pipe are flammable liq­ uids 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 ce­ ment 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)

D2661

(Pipe & Fittings)

 

 

 

PVC-DWV (Drain Waste & Vent)

D2665

Pipe & Fittings)

 

 

 

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

D2564, D2235, F493

Fittings & Pipe of the same material

 

 

 

ABS to PVC or CPVC Transition Solvent

D3138

Cement

 

 

 

CANADA PIPE & FITTING & SOLVENT

MARKING

CEMENT

 

 

 

 

 

PVC & CPVC Pipe and Fittings

 

 

 

PVC & CPVC Solvent Cement

ULCS636

 

ABS to PVC or CPVC Transition Cement

 

Manual background IMPORTANT

EL296UHE 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 con­ nections to the PVC fittings in the unit.

Use PVC primer and solvent cement or ABS solvent cement meeting ASTM specifications, refer to Table 2. As an alter­ nate, use all purpose cement, to bond ABS, PVC, or CPVC pipe when using fittings and pipe made of the same materi­ als. Use transition solvent cement when bonding ABS to ei­ ther PVC or CPVC.

Low temperature solvent cement is recommended during installation in 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 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 ap­ pliance must be certified to ULC S636 and supplied by a single manufacturer as part of an approved vent (ex­ haust) system. In addition, the first three feet of vent pipe from the furnace flue collar must be accessible for inspection.

Joint Cementing Procedure

All cementing of joints should be done according to the specifications outlined in ASTM D 2855.

Manual background 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.

NOTE - Time is critical at this stage. Do not allow prim­ er to dry before applying cement.

6 - Promptly apply solvent cement to end of pipe and in­ side socket surface of fitting. Cement should be ap­ plied lightly but uniformly to inside of socket. Take care to keep excess cement out of socket. Apply sec­ ond 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 dur­ ing assembly (but not after pipe is fully inserted) to dis­ tribute cement evenly. DO NOT turn ABS or cellular core pipe.

NOTE - Assembly should be completed within 20 sec­ onds after last application of cement. Hammer blows should not be used when inserting pipe.

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Lennox International Inc EL296UHE Joint Cementing Procedure, Table Piping And Fittings Specifications, Danger