Carrier 58SX040-IBC - Manual (Page 3)

Fig. 2—Tuning Vaive Location
The accessory vent terminal kit described below must be
used in constructing the vent terminal for this imit. Pipes
must terminate through either the roof or the sidewall; roof
termination is preferable. Locate sidewall terminations to
prevent damage to shrubs, condensing unit, and siding
materials. Table 2 gives clearance requirements.
A CAUTION
Combustion air must not be taken from inside the
structure because that air frequently is contaminated
by halogens, which include fluorides, chlorides, bro­
mides, and iodides. These elements are found in aero­
sols, detergents, bleaches, cleaning solvents, salts, air
fresheners, and other household products. Vapors from
these products are highly corrosive to gas-fired fur­
naces, even in extremely low concentrations (as low as
0.5 ppm).
Maintain a minimum of 36-in. between combustion-air
inlet and clothes-dryer vent.
Locate the combustion-air inlet as far as possible from
the switnrning pool and swimming pool pump house.
NOTE: When a previously common-vented system (furnace
and water heater) is converted to water heater only, the
vent system may be drastically oversized for the water
heater. Consult the National Fuel Gas Code for proper siz­
ing of the vent and revise the system if necessary.
Table 2—Combustion-Air and
Vent Terminal Clearances
LOCATION CLEARANCE
Dryer vent 3ft
From plumbing vent stack 3ft
Gas appliance vent terminal 4 ft
From any opening where vent gases
could enter building
12 in.
Above grade and anticipated snow depth 12 in.
Above grade when adjacent to public
walkway
7ft
A CAUTION
When the vent pipe is exposed to temperatures below
freezing i.e. when it passes through an unheated space
or when a chimney is used as a raceway, the pipe must
be insulated with 1/2-inch thick Armaflex-type
insulation.
NOTE: The vent pipe must be insulated with 1/2-in. thick
Armaflex insulation from the tuning valve to the point
where the pipe exits the structme.
A CAUTION
When the combustion-air pipe is installed above a sus­
pended ceiling, the pipe must be installed with 1/2-in.
Armaflex insulation.
The combustion-air pipe should also be insulated in warm,
humid spaces such as basements.
A WARNING
Solvent cements are combustible. Keep away from heat,
sparks, and open flame. Use only in weU ventilated
areas. DO NOT breathe vapors. Avoid contact with the
skin or eyes. A failure to adhere to this warning can
cause a fire or physiceil injury.
A WARNING
All combustion-air and vent pipes must be airtight and
watertight. Pipes must terminate exactly as shown in
Fig. 3 through 5. A failure to adhere to this warning can
cause property damage, physical injury, or death.
Furnace is shipped from factory assembled for right-hand
vent pipe connection. When left-hand vent connection is
desired, remove cap from left-hand side of inducer outlet
box and install over hole in right-hand side of box.
Remove plastic plug from left-hand casing side panel and
install plug in unused hole in the right-hand casing side
panel.
Install the turning valve in the vertical riser of the vent pipe
18 in. above the elbow, as shown in Fig. 2.
To install piping:
Table 3—Pipe Diameter (in.)
PIPE
LENGTH
(ft)
NUMBER OF 90° ELBOWS
(See Notes)
1 2 3 4 5
5 2 2 2 2 2
10 2 2 2 2 2
15 2 2 2 2 2
20 2 2 2 2 2
25 2 2 2 2 2
30 2 2 2 2 2
35 2 2 2 2 2
NOTES:
1. Assume two 45° elbows equal one 90° elbow.
2. Diameters listed are for schedule-40 PVC, PVC-DWV or ABS-DWV pipe.
3. Long radius elbows are desirable.
4. Elbows and pipe sections supplied in vent terminal kit should not be
included in count.
5. Do not exceed 35 linear feet.
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