Carrier 58MEC, Installation, Start-Up, And Operating Instructions Manual

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Table 7 –
Approved Combustion-Air and Vent Pipe, Fitting and Cement Materials
ASTM SPECIFICATION
(MARKED ON
MATERIAL)
MATERIAL PIPE FITTINGS
SOLVENT CEMENT AND
PRIMERS
DESCRIPTION
D1527 ABS Pipe — — Schedule---40
D1785 PVC Pipe — — Schedule---40
D2235 For ABS — — Solvent Cement For ABS
D2241
PVC Pipe — — SDR---21 & SDR---26
D2466 PVC — Fittings — Schedule---40
D2468 ABS — Fittings — Schedule---40
D2564 For PVC — — Solvent Cement For PVC
D2661 ABS Pipe Fittings — DWV at Schedule---40 IPS sizes
D2665
PVC Pipe Fittings — DWV
F438 CPVC — Fittings — Schedule---40
F441 CPVC Pipe — — Schedule---40
F442 CPVC Pipe — — SDR
F493 For CPVC — — Solvent Cement For CPVC
F628 ABS Pipe — —
Cellular Core DWV at Schedule---
40 IPS sizes
F656
For PVC — — Primer For PVC
F891 PVC Pipe — — Cellular Core Schedule---40 & DWV
FIRE AND EXPLOSION HAZARD
Failure to follow this warning could result in 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.
!
WARNING
For Canadian installations, refer to Page 1 for instructions.
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.
CARBON MONOXIDE POISONING AND PROPERTY
DAMAGE 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.
!
WARNING
An abandoned masonry chimney may be used as a raceway for
properly insulated and supported combustion-air (when
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.
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.
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.
CAUTION
!
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.
58MEC