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Heatilator • HEIR36-IFT, HEIR42-IFT, HEIR50-IFT Installation Manual • 2458-980 Rev. B • 8/17
Figure 4.9
Two Elbows
WARNING! Risk of Fire!
• HEIR36(NG/LP), HEIR42(NG/LP) and HEIR50(NG/LP) models
require a minimum of 36 inches of vertical venting before attaching
any elbow to the appliance for the venting configuration in Figure 4.7.
DO NOT attach elbow directly to the appliance.
HEIR36 (NG/LP), HEIR42 (NG/LP),
HEIR50 (NG/LP)
V
1
Minimum
H
1
+ H
2
3 ft
914 mm
18 in
457 mm
4 ft
1.2 m
3 ft
914 mm
5 ft
1.5 m
7 ft
2.1 m
6 ft
1.8 m
8 ft
2.4 m
7 ft
2.1 m
10 ft
3.0 m
8 ft
2.4 m
12 ft
3.7m
9 ft
2.7 m
14 ft
4.3 m
10 ft
3.0 m
16 ft
4.9 m
V
1
+ H
1
+ H
2
= 60 ft Maximum
H
1
+ H
2
= 20 ft Maximum
H
2
H
1
INSTALLED
HORIZONTALLY
V
1