Bryant 352AAV Installation, Start-Up, And Operating Instructions Manual page 32

Table 7 – Approved Combustion-Air and Vent Pipe, Fitting and Cement Materials (USA only*)
ASTM
SPECIFICATION
MATERIAL
(MARKED ON
MATERIAL)
D1527 ABS
D1785
PVC
D2235
For ABS
D2241
PVC
D2466
PVC
D2468
ABS
D2564
For PVC
D2661
ABS
D2665
PVC
F438
CPVC
F441
CPVC
F442
CPVC
F493
For CPVC
F628
ABS
F656
For PVC
F891
PVC
*Refer to Page 1 for Canadian installations.
WARNING
!
FIRE AND EXPLOSION HAZARD
Failure to follow this warning could result in fire, property
damage, personal injury, or death. Solvent cements are
combustible. Keep away from heat, sparks, and open flame.
Use only in well-ventilated areas. Avoid breathing in vapor or
allowing contact with skin or eyes.
In Canada, construct all combustion-air and vent pipes for this
unit of CSA or ULC listed schedule-40 PVC, PVC-DWV or
ABS-DWV pipe and pipe cement. SDR pipe is NOT approved in
Canada.
In direct vent (2-pipe) systems, combustion air and vent pipes
must terminate together in same atmospheric pressure zone,
either through roof or sidewall (roof termination preferred), using
accessory termination kit. See Table 8 for required clearances.
In non-direct vent (1-pipe) system, vent pipe termination must be
installed with adequate clearances to building openings and
equipment to comply with national and local codes. See Table 9
for required clearances.
WARNING
!
CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning could result in property damage,
personal injury, or death.
All combustion-air and vent pipes must be airtight and
watertight. Pipes must also terminate exactly as shown in Fig.
44 for direct vent (2-pipe) system and Fig. 45 for non-direct
vent (1-pipe) system.
An abandoned masonry chimney may be used as a raceway for
properly insulated and supported
applicable) and vent pipes. Each furnace must have its own set of
combustion-air and vent pipes and be terminated individually, as
shown in Fig. 44 for Direct Vent (2-Pipe) system and Fig. 45 for
Non-Direct Vent (1-Pipe) system.
A furnace shall not be connected to a chimney flue serving a
separate appliance designed to burn solid fuel.
SOLVENT CEMENT
PIPE FITTINGS
Pipe --- ---
Pipe --- ---
--- --- --- ---
Pipe --- ---
--- --- Fittings
--- --- Fittings
--- --- --- ---
Pipe Fittings
Pipe Fittings
--- --- Fittings
Pipe --- ---
Pipe --- ---
--- --- --- ---
Pipe --- ---
--- --- --- ---
Pipe --- ---
combustion-air (when
32
AND PRIMERS
--- ---
--- ---
Solvent Cement
--- ---
--- ---
--- ---
Solvent Cement
--- --- DWV at Schedule---40 IPS sizes
--- ---
--- ---
--- ---
--- ---
Solvent Cement
Cellular Core DWV at Schedule---40
--- ---
Primer
--- --- Cellular Core Schedule---40 & DWV
Other gas appliances with their own venting system may also use
the abandoned chimney as a raceway providing it is permitted by
local code, the current edition of the National Fuel Gas Code and
the vent or liner manufacturer's installation instructions. Care
must be taken to prevent the exhaust gases from one appliance
from contaminating the combustion air of other gas appliances.
CAUTION
!
UNIT MAY NOT OPERATE
Failure to follow this caution may result in intermittent
unit operation.
When vent pipe is exposed to temperatures below freezing,
such as when it passes through an unheated space or when a
chimney is used as a raceway, pipe must be insulated as
shown in Table 10 with Armaflex-type insulation.
Furnace combustion air and vent pipe connections are sized for
2-in. (51 mm) pipe. Any pipe size change should be made outside
furnace casing in vertical pipe. The transition has to be made as
close to the furnace as reasonably possible.
COMBUSTION AIR PIPE
General
Furnace combustion-air connection must be attached as shown in
Fig. 38. Combustion-air intake housing plug may need to be
relocated in some applications.
For Non-Direct Vent (1-Pipe) system, combustion-air must
terminate outside of furnace casing with 1 elbow. Orient elbow so
that its opening faces down for upflow or downflow applications.
Orient elbow so that its opening faces sideways (left or right) for
horizontal left or horizontal right applications. Maintain a 3-in
minimum clearance between the opening of the combustion-air
inlet pipe and any object.
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
IPS sizes
For PVC