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Heatilator •
HEIR36, HEIR42, HEIR50 • 2285-900 Rev. D • 8/12
Figure 7.8
HEIR36 (NG/LP), HEIR42 (NG/LP), HEIR50 (NG/LP)
V
1
H
1
V
2
2 ft 610 mm 1 ft 305 mm *
3 ft 914 mm 3 ft 914 mm *
4 ft 1.2 m 4 ft 1.2 m *
5 ft 1.5 m 9 ft 2.7 m *
6 ft 1.8 m 12 ft 3.7 m *
V
1
+ V
2
+ H
1
= 50 ft (15.2 m) Max.
*No specifi c restrictions on this value EXCEPT
V
1
+ V
2
+ H
1
cannot exceed 60 ft (18.3 m).
After V
1
= 6 ft, then H
1
Max.= V
1
x 2
Note: Flue restrictor is permit-
ted ONLY on 30 ft. minimum
vertical runs with no elbows.
H
1
V
1
V
2
2 ELBOWS
2. Top Vent - Vertical Termination - (continued)
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.