23
Heatilator • HEIR36, HEIR42, HEIR50 Installation Manual • 2285-980 Rev. G • 12/14
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)
Figure 4.10
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 speci
fi
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
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.
