Changing The Flue Outlet; Venting Installation Tips - Rheem Raypa DELTA 399B Installation And Operation Manual

5. Terminate vent at least 6 ft away from adjacent
walls.
6. DO NOT terminate vent closer than 5 ft below roof
overhang.
7. The vent terminal requires a 12 in. vent terminal
clearance from the wall.
8. Terminate vent at least 1 ft above grade, including
normal snow line.
9. Multiple sidewall vent installations require a 4 ft
clearance between the ends of vent caps located
on the same horizontal plane.
Canadian Installations
Refer to latest edition of B149 Installation code.
A vent shall not terminate:
1. Directly above a paved sidewalk or driveway which
is located between two single-family dwellings and
serves both dwellings.
2. Less than 7 ft (2.13 m) above a paved sidewalk or
paved driveway located on public property.
3. Within 6 ft (1.8 m) of a mechanical air supply inlet
to any building.
4. Above a meter/regulator assembly within 3 ft (915
mm) horizontally of the vertical center-line of the
regulator.
5. Within 6 ft (1.8 m) of any gas service regulator vent
outlet.
6. Less than 1 ft (305 mm) above grade level.
7. Within the 3 ft (915 mm) of a window or door which
can be opened in any building, any non-mechan-
ical air supply inlet to any building or the combus-
tion air inlet of any other appliance.
8. Underneath a veranda, porch or deck, unless the
veranda, porch or deck is fully open on a mini-mum
of two sides beneath the floor, and the distance
between the top of the vent termination and the
underside of the veranda, porch or deck is greater
than 1 ft (305 mm).

Changing the Flue Outlet

Follow these instructions to change the flue connection
from the standard top location to the rear of the heater
(with optional flue exhaust tee).
1. Disconnect all electrical power from the heater (if
applicable).
2. Disconnect or isolate the main gas pipe from the
heater (if applicable).
3. Remove the screws, gasket and dustcover from
the rear of the heater.
4. Remove the screws, stainless steel flue cover and
gasket from the branch side of the tee located in
the flue box at the rear of the heater.
5. Remove the screws, retaining ring and rain gasket
from top of heater.
6. Remove the screws, flue collar and gasket from
the run side of the tee located in the flue box on top
of the heater.
7. Reverse the components and reattach in the new
location.
8. Make sure that the stainless steel cover, now lo-
cated on the run side of the tee, is sealed to avoid
any flue gas spillage.
ACAUTION: The silicone vent gaskets must be
properly reinstalled to prevent flue gas leakage.
Replace any torn or worn vent gaskets.

Venting Installation Tips

Support piping:
• horizontal runs - at least every 5 ft
• vertical runs - use braces
• under or near elbows
AWARNING: Examine the venting system at
least once a year. Check all joints and vent
pipe connections for tightness, corrosion or
deterioration.
27