Installation instructions
RTG 199 HE – 6 720 811 617 (2016/01)
17
Fig. 16 Horizontal venting system (single pipe penetration)
[1]
Exhaust pipe
[2]
Drain tee (when required)
[3]
Intake pipe
[LA] Minimum 4"
4.3.4
Vent connections for PP, PVC, CPVC, and ABS systems
Attaching the exhaust and air inlet connection adaptors to the top of
the heater
▶ Attach the flue gas exhaust accessory to the top of the unit fig. 17
(position 1) using the 4 screws and gasket provided, and fully insert
vent pipe into the accessory.
▶ If using 4" venting, a 3" to 4" increaser should be installed directly
after this accessory. If using 2" venting, a 3" to 2" reducer should be
installed directly after this accessory. If using the PP twin pipe
system, adapters from the appliance adapter (3" PVC compatible) to
the PP system are needed.
Fig. 17 Exhaust connection
▶ Attach the combustion air inlet accessory to the top of the unit fig. 18
(position 2) using the 3 screws and gasket provided, and install 3" air
intake pipe over the accessory.
Fig. 18 Inlet connection
4.3.5
Connecting the condensate water drain
NOTICE:
Risk of appliance freezing!
▶ Single pipe penetration should be used in non-
freezing climates only and steps must be taken to
ensure that adequate combustion air is available to
the water heater at all times!
Note: Adhesive backing needs to be removed prior to
installation.
NOTE: Vent pipe must be completely vertical when
inserting or blue gasket inside exhaust accessory can
become displaced. Exhaust accessory can be removed
with vent pipe attached to check gasket position.
NOTE: The combustion air accessory can be installed on
the top right or on the top left side of the heater. The
combustion air inlet that is not used must be kept sealed.
NOTICE:
Risk of appliance freezing!
▶ Failure to properly install condensate drain can
damage the appliance and will void the warranty.
NOTICE:
Risk of appliance freezing!
▶ Do not install condensate drain tubing in areas where
it may freeze.
The condensate must be disposed of in accordance with
local codes.
See chapter 4.12 “Filling the condensate trap”.
