Carrier 58SX040 - Manual (Page 3)

A WARNING
Do NOT install
combustion
unit so that indoor air is used for
A CAUTION
Combustion air must not be taken from inside the
structure because that air frequently is contaminated
by halogens, which include fluoiides, chlorides,
bromides, and iodides. These elements are found
in aerosols, deteigents, bleaches, cleaning solvents,
salts, air fresheners and other household products.
Vapors from these products are highly corrosive to
gas-fired furnaces, even in extremely low concentra­
tions (as low as 0 5 ppm).
Maintain a minimum ol .'16 in between com­
bustion-air inlet and clothes-dryer vent
Locate combustion-air inlet as far as possible from
swimming pool and swimming pool pump house
A CAUTION
When the vent pipe is exposed to temperatures below
freezing — that is, when it passes through an un­
heated space or when a chimney is used as a raceway
— the pipe must be insulated with 1/2-in thick
Armaflex insulation.
Combustion-Air and Vent Piping — The
schedule-40 PVC pipe and fittings must conform to
American National Standards Institute (ANSI) stand­
ards and American Society for Testing and Materials
(ASTM) standards D1785, D2661, or D2665. PVC pipe
cement and primer must conform to ASTM D2235 or
D2564. See 'Table 3 for pipe sizing and Fig. 3, 4 and 5 for
exterior piping arrangements
A WARNING
Solvent cements are combustible. Keep away from
heat, sparks, and open flame. Use only in well venti­
lated areas. Do NOT breathe vapors. Avoid contact
with the skin or eyes.
A WARNING
All combustion-air and vent pipes must be airtight
and watertight Pipes must terminate exactly as
shown in Fig. 3 through 5
Furnace is shipped from factory assembled for right-
hand vent pipe connection. When left-hand vent connec­
tion 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 tuning valve in the vertical riser of the vent
pipe 18 in. above the elbow, as shown in Fig 2
To install piping.
1. Attach factory-supplied flexible coupling to furnace
combustion-air inlet connection and secure with
stainless steel hose clamp. Ensure that factory-
supplied, perforated metal combustion-air disc is
installed in the flexible coupling
2 Working from furnace to outside, cut PVC pipe to
required length(s).
3. Deburr inside and outside of pipe
4. Chamfer outside edge of pipe for better distribution
of primer and cement
5. Clean and dry all surfaces to be joined.
6 Check dry fit of pipe and mark insertion depth on
pipe.
NOTE: All pipe should be cut, prepared, and pre­
assembled before any joint is permanently cemented.
A CAUTION
When the combustion-air pipe is installed above a
suspended ceiling, the pipe must be insulated with
1/2-in Armaflex insulation
The combustion-air pipe should also be insulated
in warm, humid spaces such as basements.
Table 3 — Pipe Diameter (in.)
Table 2 — Combustion-Air and
Vent Terminal Clearances
LOCATION CLEARANCE
Dryer vent 3 ft
From plumbing vent stack 3 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
7 ft
PIPE
LENGTH
(H)
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. Pipe lengths are “up to and Including” the tabulated values
3. Diameters listed are for schedule-40 PVC, PVC-DWV or
ABS-DWV pipe
4 Long radius elbows are desirable
5 Elbows and pipe sections supplied in vent terminal kit should
not be included in count