Installation instructions
RTG 199 HE – 6 720 811 617 (2016/01)
19
Installation
For this solution to be effective, the internal flapper must be 100%
closed when the water heater is not running. Refer to Figures 23 and24
for preferred installation positions in the vent system.
Installation considerations:
• Install damper per the supplied manufacturer‘s instructions.
• The damper is only to be used in the exhaust vent piping.
• Ensure directional arrow on damper label faces in the same direction
as exhaust flow.
• If installed horizontally, the axis must be horizontal or slightly pitched
up towards termination to ensure damper closes 100% when heater
is not running.
• To allow accessibility, damper must not be installed in an enclosed
section of vent pipe.
• Do not install damper in unconditioned spaces (e.g. attics)
Condensation can build up while the heater is running which can later
freeze and potentially block the flapper.
Fig. 22 Blackflow reducer (9301BFP) installed
Fig. 23
[1]
Good
[2]
Better
[3]
Best
Fig. 24
[1]
Good
[2]
Better
[3]
Best
[4]
Enclosed vent pipe (Do not install damper)
[5]
Unconditioned space (Do not install damper)
[6]
Preferred damper position for vertical terminations
6720608643-19.1V
