Installation Guide

12
6. Extend the fl ue pipe downward until it is close to the fl ue reducer.
See Figure 16.
FIGURE 16.
7. Fit the bottom opening of the pipe over the top opening of the
fl ue reducer. See Figure 17. Ensure that there is no gap and
that the seal is complete.
8. Secure the fl ue pipe to the reducer with three (3) evenly-spaced
sheet metal screws (Figure 17). Do not leave any open holes
in the fl ue reducer or fl ue pipe.
NOTE: All joints for vent piping between roof jack and water
heater are sealed from the manufacturer. No additional sealing
of vent pipe is necessary.
FIGURE 17.
MANUFACTURED HOME INSTALLED OVER
BASEMENT OR CRAWL SPACE -
AIR INTAKE THROUGH AN OUTSIDE WALL
ALL 30 AND 40 GALLON MODELS
3” (76 mm) PVC Schedule 40 intake air vent piping:
Optional Kit No. 9002986005 contains a 3” (76 mm) PVC Schedule
40-45° vent cap with screen and two 3” (76 mm) wall collars.
ALL 50 GALLON MODELS
4” (102 mm) PVC Schedule 40 intake air vent piping:
Optional Kit no. 9002987005 contains a 4” (102 mm) PVC Schedule
40-45° vent cap with screen and two 4” (102 mm) wall collars.
ALL MODELS
1. PVC, ABS or CPVC Schedule 40 piping and fittings are
acceptable materials for the air intake vent system.
2. The intake air vent system must terminate horizontally to the outdoors.
3. Remove the screws which attach the wind baffl e to the existing
metal air intake vent pipe underneath the home. Discard the wind
baffl e and screws. See Figure 18.
FIGURE 18.
4. Attach a 3” (76 mm) or 4” (102 mm) PVC street elbow to the metal
air intake vent using 3 sheet metal screws. Continue PVC piping
to outside wall and terminate with vent cap and screen. See
Figure 19 and Table 1.
3” (76 mm) size - 30 and 40 gallon models.
4” (102 mm) size - 50 gallon models.
See pages 13 and 14 for cementing instructions
SEE MAXIMUM
COMBINED
LENGTHS IN
TABLE 1.
SLOPE INLET PIPING
DOWNWARD TOWARD
VENT CAP TO PREVENT
CONDENSATION BUILDUP.
FIGURE 19.
NOTE: Vent cap must be located a minimum of 12” (30.48 cm) above
the ground or anticipated snow level.
TABLE 1: AIR INTAKE VENT PIPING REQUIREMENTS
Water Heater Gas Vent Dia. Do Not Exceed:
30 Gallon NAT 3” (76mm) 17 ft. (5.18 m) length; 3 elbows
30 Gallon LP 3” (76mm) 12 ft. (3.66 m) length; 3 elbows
40 Gallon NAT 3” (76mm) 30 ft. (9.1 m) length; 3 elbows
40 Gallon LP 3” (76mm) 20 ft. (6.1 m) length; 3 elbows
50 Gallon NAT 4” (102mm) 30 ft. (9.1 m) length; 3 elbows
50 Gallon LP 4” (102mm) 30 ft. (9.1 m) length; 3 elbows