Heatilator HEIR36H-IFT Installation Manual page 24

1. Top Vent - Horizontal Termination - (continued)
Three Elbows
HEIR36 (NG/LP), HEIR42 (NG/LP), HEIR50 (NG/LP)
V
1
2 ft 610 mm 7 in
3 ft 914 mm 2 ft
4 ft 1.2 m 4 ft
5 ft 1.5 m 9 ft
6 ft 1.8 m 12 ft
7 ft 2.1 m 14 ft
10 ft 3.0 m 20 ft
V + H must be adhered to.
1 1
* V has no specific restrictions EXCEPT,
2
H = 2 x V and V + H
t max t total
Figure 4.10
24 Heatilator • HEIR36-IFT, HEIR42-IFT, HEIR50-IFT Installation Manual • 2458-980 Rev. B • 8/17
H
2
H V H
1 2 2
178 mm * H Max = 2 X V
2
610 mm * H Max = 2 X V
2
1.2 m * H Max = 2 X V
2
2.7 m * H Max = 2 X V
2
3.7 m * H Max = 2 X V
2
4.3 m * H Max = 2 X V
2
6.1 m * H Max = 2 X V
2
cannot exceed 60 ft Maximum
total
WARNING! Risk of Fire!
• HEIR36(NG/LP), HEIR42(NG/LP) and HEIR50(NG/LP) models
require a minimum of 24 inches of vertical venting before attaching
any elbow to the appliance.
DO NOT attach elbow directly to the appliance.
V
2
H
1
2
2
2
2
2
2
2
V
1