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Heat & Glo •
TRUE-36, TRUE-42, TRUE-50 • 2282-900 Rev. D • 8/12
H
1
V
1
1. Top Vent - Horizontal Termination
Figure 7.3
One Elbow
TRUE-36 (NG/LP), TRUE-42 (NG),
TRUE-50 (NG/LP)
V
1
Minimum H
1
Maximum
2 ft 610 mm 7 in* 178 mm
3 ft 914 mm 2 ft 610 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
7 ft 2.1 m 14 ft 4.3 m
10 ft 3.0 m 20 ft 6.1 m
20 ft 6.1 m 40 ft 12.2 m
After V
1
= 6 ft then H
1
= 2 x V ft Maximum
V
1
+ H
1
= 60 ft Maximum
*when used with approved termination caps
Note: Flue restrictor is permit-
ted ONLY on 30 ft. minimum
vertical runs with no elbows.
WARNING! Risk of Fire!
• TRUE-36(NG/LP), TRUE-42(NG), and TRUE-50(NG/LP) models
require a minimum of 24 inches of vertical venting before attaching
any elbow to the appliance.
• TRUE-42(LP) model requires a minimum of 36 inches of vertical
venting before attaching any elbow to the appliance.
DO NOT attach elbow directly to the appliance.
TRUE-42 (LP)
V
1
Minimum H
1
Maximum
3 ft 914 mm 10 in. 254 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
7 ft 2.1 m 14 ft 4.3 m
10 ft 3.0 m 20 ft 6.1 m
20 ft 6.1 m 40 ft 12.2 m
After V
1
= 6 ft then H
1
= 2 x V ft Maximum
V
1
+ H
1
= 60 ft Maximum
*when used with approved termination caps