International comfort products G9MVE A3 Series Installation Instructions Manual page 37

INSTALLATION INSTRUCTIONS
combustion for a single pipe vent system. Refer to the "Air For
Combustion and Ventilation Section."
Provisions for adequate combustion, ventilation, and dilution air
must be provided in accordance with:
Non-Direct Vent (1-pipe) System
In a non direct-vent (1-pipe) system, all air for combustion is
taken from the area adjacent to furnace, and all flue products
are discharged to outdoor atmosphere.
must be supplied as described in the Air For Combustion and
Ventilation Section. Do not use an abandoned chimney to
supply outside air to the furnace. See Figure 63 for references
to clearances required by National code authorities.
A combustion air pipe to the outdoors is not required for a
single pipe vent system. A 12-in. (304 mm) long pipe with a
2−in. (50 mm Nominal Dimension− ND) tight radius 90 degree
elbow is required to be attached to the combustion air pipe
adapter on the furnace. (See Figure 59) This short inlet air pipe
helps to ensure stable combustion, as well as allow for sound
attenuation. To aid sound attenuation, point the inlet air pipe
away from occupants. An extra elbow and/or five feet (1.5 M) of
pipe may be used to accomplish the sound attenuation
function.
NOTICE
OPTIONAL VENTING BELOW THE FURNACE
The venting system may be positioned below the fur-
nace ONLY IF the factory accessory External Vent
Trap Kit is used. The External Vent Trap Kit is only
approved for PVC/ABS DWV venting systems.
CAREFULLY FOLLOW THE INSTRUCTIONS
PROVIDED WITH THE EXTERNAL VENT TRAP KIT
FOR LAYING OUT THE VENTING SYSTEM AND
THE DRAIN SYSTEM. The instructions included with
this furnace DO NOT APPLY to vent systems that are
located below the furnace
Table 13 Approved Combustion-Air and Vent Pipe, Fitting and Cement Materials (U.S.A. Installation)
ASTM
SPECIFICATION
MATERIAL
(MARKED ON
MATERIAL)
ABS
D1527
PVC
D1785
For ABS
D2235
PVC
D2241
PVC
D2466
ABS
D2468
For PVC
D2564
ABS
D2661
PVC
D2665
CPVC
F438
CPVC
F441
CPVC
F442
For CPVC
F493
ABS
F628
For PVC
F656
PVC
F891
440 01 4401 02
Air for combustion
SOLVENT CEMENT AND
PIPE FITTINGS
Pipe −
Pipe −
− − Solvent Cement
Pipe −
− Fittings
− Fittings
− − Solvent Cement
Pipe Fittings
Pipe Fittings
− Fittings
Pipe −
Pipe −
− − Solvent Cement
Pipe −
− −
Pipe −
Specifications subject to change without notice.
WARNING
!
CARBON MONOXIDE POISONING HAZARD
Failure to follow the instructions outlined in Locating
the Vent Termination for each appliance being placed
into operation could result in carbon monoxide poison-
ing or death.
The instructions included with this furnace DO NOT
APPLY to vent systems that are located below the fur-
nace. CAREFULLY FOLLOW THE INSTRUCTIONS
PROVIDED WITH THE EXTERNAL VENT TRAP KIT
FOR LAYING OUT THE VENTING SYSTEM AND
THE DRAIN SYSTEM when all or part of the venting
system is placed below the furnace.
Proper configuration of the venting and drain system is
critical when placing all or part of the venting system
below the level of the furnace. VENT GASSES
COULD BE RELEASED FROM THE DRAINAGE
SYSTEM, if the instructions provided with the External
Vent Trap Kit are not followed.
PRIMERS
−
−
−
−
−
− DWV at Schedule−40 IPS sizes
−
−
−
−
Cellular Core DWV at Schedule−40 IPS
−
Primer
− Cellular Core Schedule−40 & DWV
Gas Furnace: (F/G)9MVE
DESCRIPTION
Schedule−40
Schedule−40
For ABS
SDR−21 & SDR−26
Schedule−40
Schedule−40
For PVC
DWV
Schedule−40
Schedule−40
SDR
For CPVC
sizes
For PVC
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