A.O. Smith Residential Power Vent Gas Water Heaters with Hot Surface Ignition Venting cont’d

Installing the New Water Heater (cont’d)

Venting (cont’d)

VENTING THROUGH AN OUTSIDE WALL (cont’d)

75 GALLON 70,000 and 75,000 BTU/HR, 50 GALLON 52,500, 55,000 and 62,500 BTU/HR, 40 GALLON 50,000 BTU/HR MODELS ONLY

4.The water heater requires its own (separate) venting system.

5.3″ PVC, ABS, or CPVC Schedule 40 piping and fittings are acceptable materials for the vent system on all 75 gallon 70,000 and 75,000 BTU/HR, 50 gallon 52,500, 55,000 and 62,500 BTU/HR models, 40 gallon 50,000 BTU/HR models.

6.It cannot be connected to existing vent piping or chimney.

7.It must terminate horizontally to the outdoors.

75 GALLON 70,000 and 75,000 BTU/HR, 50 GALLON 52,500, 55,000 and 62,500 BTU/HR, 40 GALLON 50,000 BTU/HR MODELS ONLY — OPTIONAL 4″ VENT PIPING

4″ PVC, ABS or CPVC Schedule 40 vent piping:

1.A wire screen to fit a 4″ PVC, ABS or CPVC Schedule 40-45° vent cap is supplied with the water heater.

2.A 4″ PVC, ABS or CPVC Schedule 40-45° vent cap (elbow) (must be supplied locally).

3.A 3″ PVC, ABS or CPVC Schedule 40 pipe, minimum length of 3″ (must be supplied locally), to make vent connection at the blower outlet.

4.A 4″ to 3″ PVC, ABS or CPVC Schedule 40 reducer (must be supplied locally).

5.A 4″ PVC, ABS or CPVC Schedule 40-90° street ell; used to connect the vent pipe to the reducer when the vent pipe is to be turned horizontally off the blower (supplied locally).

6.4″ PVC, ABS or CPVC Schedule 40 pipe (must be sup- plied locally).

7.The water heater requires its own (separate) venting system.

8.4″ and 3″ PVC, ABS, or CPVC Schedule 40 piping and fittings are acceptable materials for the vent system on all 75 gallon 70,000 and 75,000 BTU/HR, 50 gallon 52,500, 55,000 and 62,500 BTU/HR models, 40 gallon 50,000 BTU/HR models.

9.It cannot be connected to existing vent piping or chimney.

10.It must terminate horizontally to the outdoors.

ALL 40 AND 50 GALLON 40,000 BTU/HR MODELS ONLY

3″ PVC, ABS or CPVC Schedule 40 vent piping:

1.A 3″ PVC Schedule 40-45° vent cap with wire screen is supplied with the water heater.

2.A 3″ PVC, ABS or CPVC Schedule 40-90° street ell; used to connect the vent pipe to the water heater when the vent pipe is to be turned horizontally directly off the blower (supplied locally).

3.3″ PVC, ABS or CPVC Schedule 40 pipe (must be sup- plied locally).

3″ PVC, ABS OR CPVC SCHEDULE 40 90°

STREET ELBOW

3″ PVC, ABS OR CPVC

SCHEDULE 40 PIPE VENT CAP WITH SCREEN

4.	The water heater requires its own (separate) venting
	system.
5.	3″ PVC, ABS, or CPVC Schedule 40 piping and fittings
	are acceptable materials for the vent system on all 40
	and 50 gallon 40,000 BTU/HR models.

4″ PVC, ABS OR CPVC SCHEDULE 40 90°

STREET ELBOW

4″ PVC, ABS OR CPVC SCHEDULE 40 PIPE

4″ TO 3″ PVC, ABS OR CPVC REDUCER

3″ PVC, ABS OR CPVC SCHEDULE 40 PIPE (MINIMUM LENGTH 3″)

4″ VENT CAP WITH SCREEN

6.	It cannot be connected to existing vent piping or
	chimney.
7.	It must terminate horizontally to the outdoors.

ALL 40 AND 50 GALLON 40,000 BTU/HR MODELS —

OPTIONAL 2″ VENT PIPING

2″ PVC, ABS or CPVC Schedule 40 vent piping:

1.A wire screen to fit a 2″ PVC, ABS or CPVC Schedule 40-45° vent cap is supplied with the water heater.

2.A 2″ PVC, ABS or CPVC Schedule 40-45° vent cap (elbow) (must be supplied locally).

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