GrandAire Concentric Vent Termination Kit for Condensing Furnaces Guide d'installation
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- Guide d'installation
Concentric Vent Termination Kit for Condensing Furnaces
SPECIAL VENTING REQUIREMENTS FOR
INSTALLATIONS IN CANADA
Installation in Canada must conform to the requirements
of CSA B149 code. Vent systems must be composed of
pipe, fittings, cements, and primers listed to ULC S636. This
concentric vent termination kit has been certified to ULC
S636 for use vent components which have been certified
to this standard. The primer and cement must be of the
same manufacturer as the vent system. Do not mix primers
and cements from one manufacturer with a vent system
from a different manufacturer. Follow the manufacturer’s
instructions in the use of primer and cement and never
use primer or cement beyond its expiration date.
The safe operation, as defined by ULC S636, of the vent
system and this termination kit is based on following these
installation instructions, the vent system manufacturer’s
installation instructions, and proper use of primer and
cement. Acceptability under Canadian standard CSA B149
is dependent upon full compliance with all installation
instructions. Under this standard, it is recommended
that the vent system be checked once a year by qualified
service personnel. The authority having jurisdiction (gas
inspection authority, municipal building department, fire
department, etc) should be consulted before installation
to determine the need to obtain a permit.
CONSIGNES SPÉCIALES POUR
L’INSTALLATION DE VENTILLATION AU
CANADA
L’installation faite au Canada doit se conformer aux
exigences du code CSA B149. Ce systême de ventillation
doit se composer de tuyaux, raccords, ciments et apprêts
conformes au ULC S636. Ce systême de ventillation
concentrique a été certifié ULC S636 pour être utilisé avec
les composantes qui sont certifiés. L’apprêt et le ciment
doivent être du même manufacturier que le systême de
ventillation; ne pas mélanger l’apprêt et le ciment d’un
manufacturier avec le systême de ventillation d’un autre
manufacturier. Bien suivre les indications du manufacturier
lors de l’utilisation de l’apprêt et du ciment et ne pas utiliser
ceux--ci si la date d’expiration est atteinte.
Le bon fonctionnement de ce systême de ventillation
est conditionnel à l’installation tel que défini par le ULC
S636 c’est à dire: bien suivre les consignes ci--haut
mentionnées ainsi que les instructions du manufacturier
et aussi une bonne utilisation de l’apprêt et du ciment.
L’acceptation du standard Canadien CSA B419 est
directement relié à l’installation conforme aux instructions
ci--haut mentionnées. Le standard Canadien recommande
l’ inspection par un personel qualifié et ce, une fois par
année. Les autoritées ayant juridiction (inspecteurs de gas,
inspecteurs en bâtiments, département des incendies,
etc) devraient être consultées avant l’installation afin de
déterminer si un permis est requis.
IMPORTANT SAFETY INFORMATION
Please read all instructions before installing this kit. Pay
attention to all safety warnings and any other special
notes highlighted in the manual. Safety markings are
used frequently throughout this manual to designate a
degree or level of seriousness and should not be ignored.
WARNING indicates a potentially hazardous situation that
if not avoided, could result in personal injury or death.
CAUTION indicates a potentially hazardous situation
that if not avoided, may result in minor or moderate injury
or property damage.These instructions are intended to
assist qualified individuals in the proper installation of
the concentric vent termination kit. If these instructions
differ from those packaged with the furnace, follow these
instructions. READ ALL INSTRUCTIONS CAREFULLY
BEFORE STARTING THE INSTALLATION.
WARNING:
ELECTRICAL SHOCK, FIRE OR EXPLOSION
HAZARD
Failure to follow safety warnings exactly could
result in serious injury or property damage.
Improper servicing could result in dangerous
operation, serious injury, death or property
damage.
• Before servicing, disconnect all electrical
power to the indoor blower.
• Whenservicingcontrols,labelallwiresprior
to disconnecting. Reconnect wires correctly.
• Verifyproperoperationafterservicing.
WARNING:
The information listed in this manual must
be followed during the installation of this kit.
Unqualified individuals should not attempt
to interpret these instructions or install this
equipment. If you do not posses mechanical skills
or tools, call your local dealer for assistance.
Installing and servicing heating equipment can be
hazardous due to gas and electrical components.
Observe all precautions in the literature, and on
tags and labels attached to the unit. Follow all
safety codes. Wear glasses and work gloves, and
have a fire extinguisher available.
Failure to follow safety recommendations could
result in possible damage to the equipment,
serious personal injury or death.
INSTALLATION INSTRUCTIONS
2
4. Install cemented Y concentric fitting and pipe assembly
through structure's hole and field supplied roof boot/
flashing. See Figure 3 (page 3).
NOTE: do not allow insulation or other materials to
accumulate inside pipe assembly when installing through
hole.
5. Secure assembly to roof structure as shown in Figure
3 using field supplied metal strapping or equivalent
support material.
IMPORTANT: Make sure the termination height is above
the roof surface or anticipated snow level (12 inches
in U.S.A. or 18 inches in Canada). If the assembly is
too short to meet the height requirement, the 2 pipes
supplied in the kit may be replaced by using the same
diameter, field supplied SDR-26 PVC (D2241) pipe.
Do not expand dimension "D" more than 60 inches.
See Figure 3.
WARNING:
Do not operate the furnace with rain cap removed.
Recirculation of combustion products may
occur, or water may accumulate inside larger
combustion air pipe and flow into the burner
enclosure. Failure to follow this warning could
result in product damage or improper operation,
personal injury or death.
Figure 1. Kit Components
Inside Pipe
Y Concentric
Fittin
g
Outside Pipe
Rain Cap
INSTALLATION
WARNING:
These kits are to be used only for terminating
condensing Category IV furnaces. DO NOT use
kits to terminate Category I, II, or III vent furnaces.
Failure to follow these instructions could result
in fire, personal injury, or death.
Vent and combustion air pipe and fittings must be one of
the following materials in the list and must conform to the
indicated ANSI/ASTM standards. Cement must conform
to ASTM Standard D2564 for PVC and Standard D2235
for ABS. PVC primer must meet standard ASTM F656.
When joining PVC piping to ABS, use PVC solvent cement.
See procedure specified in ASTM Standard D3138. In
Canada, all plastic vent pipes and fittings including any
cement, cleaners, or primers must be certified as a system
to ULC S636.
Figure 2. Dimensions
KIT NO. A B C D E F
904953 (3”) 38 7/8 3 4 1/2 21 1/8 7 3/8 6 1/2
904952 (2”) 33 /38 2 3 1/2 16 5/8 6 1/4 5 3/4
B
1 3/16
1 1/2
D
F
A
E
C In. Dia.
Materials Standards
SCHEDULE 40PVC ............................................... D1785
PVC-DWV .............................................................. D2665
SDR-21 & SDR-26 ................................................. D2241
ABS-DWV .............................................................. D2661
SCHEDULE 40 ABS .............................................. F628
FOAM / CELLULAR CORE PVC ........................... F891
Consult your furnace installation instructions for the
allowable length and size of the plastic vent pipe. The
concentric vent termination assembly is equal to 4 feet of
3" inlet and outlet pipe, or 3 feet of 2" inlet and outlet pipe.
The Concentric Vent Termination Kit is shipped assembled
but not cemented. Disassemble the kit and cement as
shown in Figures 1 and 2.
Procedure 1: Roof Termination
1. Determine the best location for the termination kit.
2. Cut one hole, 5 inch diameter when using a 3" kit or a
4" diameter hole when using a 2" kit.
3. Partially assemble the concentric vent termination kit
as shown in Figures 1 and 2.
a. Cement Y concentric vent fitting to larger diameter
kit pipe. See Figure 1.
b. Cement rain cap to smaller diameter kit pipe. See
Figure 1.
3
Figure 3. Roof Installation
Maintain 12" (18" for
Canada) Min. clearance
above roof or highest
anticipated snow level,
max. 24" above roof.
Combustion
Air
Support
(Field Supplied)
Vent
Combustion Air
45˚ Elbow
(Field Supplied)
Roof Boot/
Flashing
(Field Supplied)
Vent
NOTE: Instead of cementing the smaller pipe to the rain
cap, a field-supplied stainless steel screw may be used to
secure the 2 components together when field disassembly
is desired for cleaning. See Figure 4.
6. Cement field supplied furnace combustion air and vent
pipes to concentric vent termination assembly.
7. Run furnace through a complete heat cycle to ensure
combustion air and vent pipes are properly connected
to concentric vent termination connections.
Procedure 2: Side Wall Termination
1. Determine the best location for termination kit.
• Termination kit should be positioned where the
vent vapors will not damage plants/shrubs, or air
conditioning equipment.
• Terminationkitshouldbepositionedwhereitwillnot
be affected by wind eddies or currents that may allow
recirculation of combustion products or unwanted
intake of airborne leaves or light snow.
• Termination kit should not be positioned where it
may be damaged by foreign objects such as stones,
balls, etc.
• Terminationkitshouldnotbepositionedwherethe
vapors may be objectionable.
2. Cut one hole, 5 inch diameter if using a 3" kit or a 4
inch diameter hole if using 2" kit.
3. Partially assemble the concentric vent termination kit
as shown in Figures 1 and 2.
a. Cement Y concentric vent fitting to larger diameter
kit pipe.
b. Cement rain cap to smaller diameter kit pipe.
4. Install cemented Y concentric fitting and pipe assembly
through structure's hole (Figure 5). NOTE: Do not allow
insulation or other materials to accumulate inside pipe
assembly when installing through hole.
5. Secure the assembly to the structure as shown in Figure
5 using field supplied metal strapping or equivalent
support material.
NOTE1: Ensure termination location clearance as
shown in Figure 5.
NOTE2: If assembly needs to be extended, the 2 pipes
supplied in the kit may be replaced by using the same
diameter, field supplied SDR-26 PVC (D2241) pipe.
Do not expand dimension "D" more than 60 inches
(See Figure 2).
WARNING:
Do not operate the furnace with rain cap removed.
Recirculation of combustion products may
occur, or water may accumulate inside larger
combustion air pipe and flow into the burner
enclosure. Failure to follow this warning could
result in product damage or improper operation,
personal injury or death.
CAUTION:
DO NOT use field supplied couplings to extend
pipes. Airflow restriction will occur and the
furnace pressure switch may cause intermittent
operation.
6. Cement field supplied furnace combustion air and vent
pipes to concentric vent termination assembly.
7. Run furnace through a complete heat cycle to ensure
combustion air and vent pipes are properly connected
to concentric vent termination connections.
Figure 4. Rain Cap to Vent Pipe Alternate Assembly
Drill Clearance Hole in Rain Cap
and Pilot Hole in Vent Pipe
Stainless Steel Screw
(Field Supplied)
CAUTION:
DO NOT use field supplied couplings to extend
pipes. Airflow restriction will occur and the
furnace pressure switch may cause intermittent
operation.
Combustion
Air
Combustion
Air
45° Elbow
(Field Supplied)
Vent
Field Supplied Strap
1" Max. Clearance
Exhaust
Vent
Figure 5. Side Wall Installation
Vent
Vent
8" Min.
Combustion
Air
Figure 6. Concentric Vent & Combustion-Air
Roof Terminations
1" Maximum
(TYP)
12" Minimum
to Maximum
expected
snow level
Vent
8" Min.
Vent
Combustion Air
Figure 7. Concentric Vent &
Combustion-Air Wall Terminations
INSTALLER: PLEASE LEAVE THESE INSTRUCTIONS WITH THE OWNER.
708999B (Replaces 708999A)
Procedure 3: Multiventing Terminations
When two or more direct vent furnaces are vented near each other, each furnace must be individually vented as
shown in Figures 6 and 7. NEVER common vent or breach vent this furnace. When two or more direct vent furnaces
are vented near each other, each vent termination may by installed as shown in Figure 6 and 7. It is important that
vent terminations be made as shown to avoid recirculation of flue gases. A minimum distance of 8 inches MUST be
maintained.
Specifications & illustrations subject to change without notice or incurring obligations (05/15).
O’Fallon, MO, © Nortek Global HVAC LLC 2015. All Rights Reserved.
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