Bradford White M-I-MH40T6FLX - Manual (Page 8)

8
Installation continued-
Figure 1
Venting
Make certain the flue baffle is in place and centered in flue tube. Place the draft
diverter over the flue opening at the top of the water heater by inserting the tips of the
draft diverter legs into the four (4) holes provided in the water heater top. Cut a 7 1/4
inch (18.5cm) diameter hole in the ceiling and roof directly above the flue of the water
heater. Center the water heater beneath the 7 1/4 inch (18.5cm) diameter holes in the
roof and ceiling for proper alignment of the draft diverter and roof jack vent. Apply non-
hardening mastic on the roof, around the previously cut hole, to form a weather seal
with the flashing of the gas vent roof jack assembly. Insert gas vent roof jack assembly
from above and fasten the flashing to the roof through the pre-punched holes in the
flashing. Note: Only the roof jacks listed in Figure 2 can be used on this water
heater. Apply additional non-hardening mastic to complete the weather seal. Slip the
3inch (7.62cm) vent connector extension that is shipped telescoped, into the gas vent
roof jack assembly down onto the draft diverter that is secured to the top of the water
heater and fasten with the two (2) sheet metal screws provided.
WARNING
The vent system must be installed properly. Failure to properly install the
vent system could result in property damage, personal injury, or death.
Minimum Clearances From
Combustible Materials
A
0” (0cm) Left, 2” (5.08cm)
Right (113.6 Liters Only)
B 0” (0cm)
C 4” (10.16cm)
D 78” (1.98m) m
VENT ----