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Installation Instructions (cont'd)
VENTING SYSTEM EXAMPLE INSTALLATIONS
FOR ALL MODELS
The vent piping cannot under any circumstances be run down-
hill.
The vent piping can be inst_led as follows:
1. No more than 3 elbows can be used.
MAX.
MIN. RISE I/4"
PERFOOT
2. Horizontal runs require a minimum V,,"rise per foot.
13" MIN.
35'MAX.
16" MIN,
I1" MIN.
MIN. RISE ¼"
PERFOOT
3. The total vertical and horizontal run cannot exceed 35'
for 3" vent piping (20' maximum if 2" vent piping is
_:se_ on 40,000 BTU/Hr. models) with a maximum of
three 90 ° elbows.
MIN. RISE¼"
PERFOOT
ONE ELBOW
MAX. 3
MIN. RISE }/4"
PER FOOT
MIN. RISE 1/4"
PERFOOT
I
MIN. RISE¼"
PERFOOT
MIN. RISE¼"
PERFOOT
18