Carrier 58CTA Installation And Service Instructions Manual page 32

SEE NOTES: 1,2,4,7,8,9 on the page
following these figures
Fig. 40—Horizontal Left Application-Vent Elbow Left
SEE NOTES: 1,2,4,5,7,8,9 on the page
following these figures
Fig. 41—Horizontal Left Application-
Vent Elbow Right then Up
SEE NOTES: 1,2,4,7,8,9 on the page
following these figures
Fig. 44—Horizontal Right Application-
Vent Elbow Right
To prevent condensation in the furnace and vent system, the
following precautions must be observed:
1. The return-air temperature must be at least 60°F db except for
brief periods of time during warm-up from setback at no lower
than 55°F db or during initial start-up from a standby
condition.
2. Adjust the gas input rate per the installation instructions. Low
gas input rate causes low vent gas temperatures, causing
condensation and corrosion in the furnace and/or venting
system. Derating is permitted only for altitudes above 2000 ft.
3. Adjust the air temperature rise to the midpoint of the rise range
or slightly above. Low air temperature rise can cause low vent
gas temperature and potential for condensation problems.
A03213
Fig. 42—Horizontal Left Application-Vent Elbow Up
SEE NOTES: 1,2,4,5,7,8,9 on the page
following these figures
A03214
Fig. 43—Horizontal Left Application-Vent Elbow Right
A03218
SEE NOTES: 1,2,4,5,7,8,9 on the page
following these figures
Fig. 45—Horizontal Right Application-
4. Set the thermostat heat anticipator or cycle rate to reduce short
cycling.
Air for combustion must not be contaminated by halogen com-
pounds which include chlorides, fluorides, bromides, and iodides.
These compounds are found in many common home products such
as detergent, paint, glue, aerosol spray, bleach, cleaning solvent,
salt, and air freshener, and can cause corrosion of furnaces and
vents. Avoid using such products in the combustion-air supply.
Furnace use during construction of the building could cause the
furnace to be exposed to halogen compounds, causing premature
failure of the furnace or venting system due to corrosion.
Vent dampers on any appliance connected to the common vent can
cause condensation and corrosion in the venting system. Do not
use vent dampers on appliances common vented with this furnace.
30
See Venting Notes.
SEE NOTES: 1,2,4,5,7,8,9 on the page
following these figures
Vent Elbow Left then Up
A03215
A03216
A03219