Venting And Combustion Air Piping; Installation With Pre-Existing Vent Systems - Rheem RGFE Installation Instructions Manual

VENTING AND COMBUSTION AIR PIPING

GENERAL INFORMATION
WARNING
READ AND FOLLOW ALL
INSTRUCTIONS IN THIS SEC-
TION. FAILURE TO PROPERLY
VENT THIS FURNACE OR PRO-
TECT IT FROM INADEQUATE
COMBUSTION AIR CAN CAUSE
CARBON MONOXIDE POISON-
ING, AN EXPLOSION OR FIRE,
RESULTING IN PROPERTY DAM-
AGE, PERSONAL INJURY OR
DEATH.
OVER TEMPERATURE
SAFETY SWITCHES
Furnaces are equipped with safety
switches in the burner compartment to
protect against over temperature condi-
tions. If a switch is tripped, it must be
manually reset.
WARNING
DO NOT JUMPER OVERTEM-
PERATURE OR ANY OTHER
SAFETY SWITCHES! IF ONE OF
THESE OVER TEMPERATURE
SWITCHES SHOULD TRIP, CALL
A QUALIFIED INSTALLER, SER-
VICE AGENCY OR THE GAS
SUPPLIER. DO NOT RESET THE
SWITCHES WITHOUT TAKING
CORRECTIVE ACTION. FAILURE
TO DO SO CAN RESULT IN CAR-
BON MONOXIDE POISONING OR
DEATH. IF THIS UNIT IS
INSTALLED IN A CLOSET, THE
DOOR MUST BE CLOSED WHEN
MAKING THIS CHECK.
REPLACE THE OVER TEMPERA-
TURE SAFETY SWITCHES ONLY
WITH THE IDENTICAL REPLACE-
MENT PART.
WARNING
IN CANADA, PRODUCTS CERTI-
FIED FOR INSTALLATION AND
INTENDED TO BE VENTED WITH
PLASTIC VENT SYSTEMS (PVC,
CPVC) MUST USE VENT SYS-
TEMS THAT ARE CERTIFIED TO
THE STANDARD FOR TYPE BH
GAS VENTING SYSTEMS, ULC
S636.
18
THE COMPONENTS OF THE
CERTIFIED MATERIAL MUST
NOT BE INTERCHANGED WITH
OTHER VENT SYSTEMS OR
UNLISTED PIPE/FITTINGS.
PLASTIC COMPONENTS AND
SPECIFIED PRIMERS AND
GLUES OF THE CERTIFIED SYS-
TEM MUST BE FROM A SINGLE
SYSTEM MANUFACTURER AND
NOT INTERMIXED WITH OTHER
SYSTEM MANUFACTURER'S
PARTS.
NOTE: INLET AIR PIPING IS NOT
CONSIDERED TO BE A PART OF
THE "VENTING SYSTEM". THE
REQUIREMENT THAT VENT MATE-
RIAL BE CERTIFIED TO ULC S636
DOES NOT APPLY TO INLET AIR
PIPING.
INSTALLATION WITH
PRE-EXISTING VENT
SYSTEMS
When the installation of this furnace
replaces an existing furnace that is
removed from a vent system serving
other appliances (such as a water
heater), the existing vent system is likely
to be too large to properly vent the
remaining attached appliances.
Follow the steps below with each appli-
ance remaining connected to the origi-
nal common vent system. Place the
appliance to be tested in operation,
while the other appliances remaining
connected to the common vent system
are not in operation. Test the operation
of each appliance individually by the fol-
lowing method.
1. Permanently seal any unused
openings in the common venting
system.
2. Visually inspect the venting system
for proper size and horizontal pitch
and determine that there is no
blockage, restriction, leakage, cor-
rosion or other deficiencies which
could cause an unsafe condition.
3. If practical, close all building doors,
windows and all doors between the
space where the appliances
remaining connected to the com-
mon venting system are located.
Turn on clothes dryers and any
appliance not connected to the
common venting system. Turn
on any exhaust fans, such as
range hoods and bathroom
exhausts, so they will operate at
maximum speed. Do not operate
a summer exhaust fan. Close
fireplace dampers.
4. Follow the lighting instructions.
Place the appliance being
inspected into operation. Adjust
the thermostat so the appliance
will operate continuously.
5. Test for spillage at the draft hood
relief opening after 5 minutes of
main burner operation. Use the
flame of a match or candle, or
smoke from a cigarette, cigar
or pipe.
6. After it has been determined that
each appliance that remains con-
nected to the common venting
system properly vents (when
tested as outlined above), return
doors, windows, exhaust fans,
fireplace dampers and any other
gas-burning appliance to their
previous conditions of use.
7. If improper venting is observed
during any of the above tests,
resize the common venting sys-
tem. Refer to latest edition of the
National Fuel Gas Code ANSI
Z223.1, or the CSA-GAMA vent-
ing tables for Category I fur-
naces.
NOTE: For U.S. installations
only. Schedule 40 ABS-DWV
pipe and fittings may be used as
an alternate to PVC pipe for the
combustion air inlet and vent
pipes.
NOTE: For U.S. installations
only. Cellular core PVC is also
approved for use. It must be
schedule 40 PVC-DWV cellular
pipe manufactured under ASTM
F-891.