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Heatilator •
HEIR36, HEIR42, HEIR50 • 2285-900 Rev. D • 8/12
1. Top Vent - Horizontal Termination - (continued)
Figure 7.5
Three Elbows
HEIR36 (NG/LP), HEIR42 (NG/LP), HEIR50 (NG/LP)
V
1
H
1
V
2
H
2
2 ft 610 mm 7 in 178 mm * H
2
Max = 2 X V
2
3 ft 914 mm 2 ft 610 mm * H
2
Max = 2 X V
2
4 ft 1.2 m 4 ft 1.2 m * H
2
Max = 2 X V
2
5 ft 1.5 m 9 ft 2.7 m * H
2
Max = 2 X V
2
6 ft 1.8 m 12 ft 3.7 m * H
2
Max = 2 X V
2
7 ft 2.1 m 14 ft 4.3 m * H
2
Max = 2 X V
2
10 ft 3.0 m 20 ft 6.1 m * H
2
Max = 2 X V
2
V
1
+ H
1
must be adhered to.
* V
2
has no specifi c restrictions EXCEPT,
H
t max
= 2 x V
t
and V
total
+ H
total
cannot exceed 60 ft Maximum
Note: Flue restrictor is permit-
ted ONLY on 30 ft. minimum
vertical runs with no elbows.
H
2
H
1
V
2
V
1
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.