Trane UX1C080A9601A PVC Vent Fitting Material, Vent Fitting Material Plastic, Bonding of PVC

Installer’s Guide

PVC VENT FITTING MATERIAL

These fittings are available from your Gas Furnace Distributors.

Straight Pipe Sections, Couplings, 45° Elbows, 60° El- bows, 90° Elbows, Vent or Sanitary Tee, or other neces- sary fittings may be 2", 2½", 3", or 4" diameter. The al- lowable materials are shown in Table 8.

VENT FITTING MATERIAL – PLASTIC

Gas and liquid tight single wall vent fittings, designed for resistance to corrosive flue condensate, MUST be used throughout.

Listed in Table 10 & 11 are 2", 2½", 3", and 4" size fittings that meet these requirements. The materials listed are various grades of PVC and ABS plastic.

PIPE JOINTS: All joints must be fastened and sealed to prevent escape of combustion products into the build- ing.

NOTE:

It is recommended that the first joints from the furnace be connected and sealed with high temperature RTV. This will enable the pipes to be removed later without cutting.

Be sure to properly support these joints.

BONDING OF PVC

Commercially available solvent cement must be used to join the pipe and fittings. Follow instructions on the container carefully.

Procedure for Cementing Joints:

1.Cut pipe square, remove ragged edges and burrs. Chamfer end of pipe, then clean fitting socket and pipe joint area of all dirt, grease, moisture or chips.

2.After checking pipe and socket for proper fit, wipe socket and pipe with cleaner-primer. Apply a liberal coat of primer to inside surface of socket and out- side of pipe.

DO NOT ALLOW PRIMER TO DRY BEFORE AP- PLYING CEMENT.

3.Apply a thin coat of cement evenly in the socket. Quickly apply a heavy coat of cement to the pipe end and insert pipe into fitting with a slight twisting movement until it bottoms out.

4.Hold the pipe in the fitting for 30 seconds to pre- vent tapered socket from pushing the pipe out of the fitting.

5.Wipe all excess cement from the joint with a rag. Allow 15 minutes before handling. Cure time varies according to fit, temperature and humidity.

NOTE:

Follow venting instructions carefully when using PVC cement.

IMPORTANT:

All joints must be water tight. Flue condensate is some- what acidic, and leaks can cause equipment damage.

Connection of the pipe and collar of the combustion air inlet should just be a friction fit. It is recommended that the inlet air joint be sealed with RTV type sealant to allow the joint to be separated for possible future ser- vice. The inlet and vent pipes must be properly sup- ported throughout the entire length.

TABLE 9

PLASTIC PIPE DESIGNATIONS

PVC

ASTM STANDARD	PIPE TYPE	ALLOWABLE TEMPERATURE	MARKING
F891	CELLULAR CORE	*158	ASTM F891
D2665	DWV PIPE	**158	ASTM D2665
D1785	SCH 40, 80, 120	**158	ASTM D1785
D2241	SDR SERIES	**158	ASTM D2241
	CPVC
ASTM STANDARD	PIPE TYPE	ALLOWABLE TEMPERATURE	MARKING
D2846	CPVC 41	**212	ASTM D2846
F441	SCH 40, 80	**212	ASTM F441
F442	SDR SERIES	**212	ASTM F442
	ABS
ASTM STANDARD	PIPE TYPE	ALLOWABLE TEMPERATURE	MARKING
D2661	SCH 40 DWV	***180	ASTM D2661
F628	SCH 40 DWV CELLULAR CORE	***180	ASTM F628

*- Allowable temperatures based on classifications covered in ASTM D4396 [Deflection Temps Under Load (264 PSI)]

**- Allowable temperatures based on classifications covered in ASTM D1784 [Deflection Temps Under Load (264 PSI)]

***- Allowable temperatures based on classifications covered in ASTM D3965 [Deflection Temps Under Load (264 PSI)]

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