•4” and 3” PVC, ABS or CPVC Schedule 40 piping and fittings are acceptable materials for vent system on all 75 gallon 70,000 and 75,000 BTU/HR models and must be supplied locally.
FIGURE46.
ALL 40 AND 50 GALLON 40,000 BTU/HR MODELS -
OPTIONAL 2” VENT PIPING
2” PVC, ABS or CPVC Schedule 40 vent piping:
•A wire screen to fit 2” PVC, ABS or CPVC Schedule 40 - 45o vent cap is supplied with the water heater.
•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.
•A 3” to 2” PVC, ABS or CPVC Schedule 40 reducer (must be supplied locally).
•2” and 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 and must be supplied locally.
FIGURE47.
•The water heater requires its own (separate) venting system.
•It cannot be connected to existing vent piping or chimney.
•It must terminate vertically to the outdoors.
•Typical installation(s) in next column.
•Refer to “Cementing PVC, ABS or CPVC pipe and fittings” on page 23 and “Connecting Vent to Blower” on page 24.
FIGURE48.
•The total vertical and horizontal vent runs cannot exceed the maximum length with the number of 90o elbows as specified in the tables to follow. If more elbows are required, the venting distance must be reduced 5 feet for every 90o elbow.
75 GALLON 70,000 AND 75,000 BTU/HR MODELS ONLY
3” DIA. VENT | NUMBEROF |
MAX. LENGTH (FT.) | 90o ELBOWS* |
70 | 1 |
65 | 2 |
60 | 3 |
55 | 4 |
50 | 5 |
45 | 6 |
75 GALLON 70,000 AND 75,000 BTU/HR MODELS ONLY -
OPTIONAL 4” VENT PIPING
4” DIA. VENT | NUMBEROF |
MAX. LENGTH (FT.) | 90o ELBOWS* |
110 | 1 |
105 | 2 |
100 | 3 |
95 | 4 |
90 | 5 |
85 | 6 |
ALL 40 AND 50 GALLON 40,000 BTH/HR MODELS ONLY | |
|
|
3” DIA. VENT | NUMBEROF |
MAX. LENGTH (FT.) | 90o ELBOWS* |
115 | 1 |
110 | 2 |
105 | 3 |
100 | 4 |
95 | 5 |
90 | 6 |
25
