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SIDE WALL VENT OPTION FOR COLD CLIMATES
Some winter weather conditions present a risk of ice
accumulation at the intake termination screen. Such
accumulation will restrict intake air flow. If local conditions
present this risk, the termination configuration shown in
Figure 21 is recommended. This will reduce the possibility
of exhaust gas recirculation as well as reduce the chance
of ice accumulation.
If necessary to avoid snow accumulation, the intake vent
terminal may be fitted with a riser similar to that on the
exhaust vent terminal. Both the intake and exhaust vent
terminations may be 90° elbows if specified by local
requirements.
Note: The vertical centerline of the air intake termination
and the vertical centerline of the exhaust vent termination
must not be closer than 8".
Important: Elbows (excluding the termination elbow) and
risers must be considered when calculating total equivalent
vent length (see Table 5).
EXHAUST
TERMINAL
VENT
SCREEN
INSIDE
WALL
MOUNTED
SUPPORT
BRACKET
INTAKE
TERMINAL
12" ABOVE
GRADE OR
12" ABOVE
ANTICIPATED
SNOW LEVEL
Figure 21.
Debris screens may be removed while there is a risk of ice
accumulation but this can make the air intake susceptible
to debris buildup, the entry of birds, other small animals or
rodents. If the debris screens are removed to prevent ice
accumulation, it is recommended that they be re-installed
when the risk of ice accumulation has passed.
26
DELUXE HORIZONTAL VENTING KIT
The Deluxe Horizontal Venting kit was an optional through-
the-wall-only concentric flue system for use only on
U.S. residential and light duty commercial Power Direct
Vent gas water heaters. This section gives directions for
replacing series 300 PDV water heaters terminated with
the Deluxe Horizontal Venting Kit.
1. Carefully disconnect the existing venting from the
2. Thoroughly inspect the vent termination for any
3. Check that all seams and joints in the vent termination
4. Check that there are no leaks or cracks in the
Important: If there is any damage to the airbox, the water
heater venting must not be connected to the Deluxe Vent
termination.
It might be necessary to trim the vent to suit the height
of the new water heater. For the purpose of these
8" MIN.
installations, the calculations for "equivalent length" will
refer to the distance from the blower assembly on the
water heater to the inside of the wall at the Deluxe Vent
Termination.
"Pyramid" Vent Terminal
24"MAX.
VENT
SCREEN
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original water heater. Take care not to damage the
venting as it will be reconnected to the new water
heater.
damage (see Figure 25).
air box are airtight.
termination airbox.
Figure 22.
"PYRAMID"
VENT TERMINAL
100324051_2000579115 _Rev. 01
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