Furnace Location Relative To Cooling Equipment - Bryant H Series Installation, Start-Up, And Operating Instructions Manual

• be provided with ample space for servicing and cleaning.
Always comply with minimum fire protection clearances
shown on the furnace clearance-to-combustibles label.
This furnace may be located in a confined space without special
provisions for dilution or ventilation air. When a furnace is
installed so that supply ducts carry air circulated by the furnace to
areas outside the space containing the furnace, return air must also
be handled by ducts sealed to furnace casing. The ducts terminate
outside the space containing the furnace to ensure there will not be
a negative pressure condition within equipment room or space.
LEVEL (0")
FRONT
TO
⁄ " MAX
1
2
UPFLOW OR DOWNFLOW
Fig. 13—Furnace Location for Proper Condensate
Drainage
NOTE: For upflow/downflow applications install furnace so that
it is level or pitched forward within 1/2-in. for proper furnace
operation. For horizontal applications pitch 1/4-in. minimum to
1/2-in. maximum forward to ensure proper condensate drainage
from secondary heat exchangers. (See Fig. 13.)
FRONT
BACK
FRONT
Fig. 14—Prohibit Installation on Back
WARNING: Do not install furnace on its back. Safety
control operation will be adversely affected. Never con-
nect return-air ducts to back of furnace. Failure to follow
this warning could result in fire, personal injury, or death.
(See Fig. 14.)
FRONT
⁄ "
1
MIN
4
TO
⁄ " MAX
1
2
HORIZONTAL
A02146
B
A
C
K
A93043
CAUTION: Do not operate this furnace during con-
struction. If the furnace is required for temporary heating
of buildings or structures under construction, use clean
outside air free of chlorine and fluorine compounds for
combustion and ventilation. These compounds form acids
that corrode the heat exchangers. These compounds are
found in paneling and dry wall adhesives, paints, thin-
ners, masonry cleaning materials, and many other sol-
vents.
→
CAUTION: If these furnaces are installed in an uncon-
ditioned space where the ambient temperatures may be
32°F or lower, freeze protection measures must be taken.
Failure to follow this caution will result in minor property
or unit damage. (See Fig. 15.)
32°F MINIMUM INSTALLED
AMBIENT OR FREEZE
PROTECTION REQUIRED
Fig. 15—Freeze Protection
II. FURNACE LOCATION RELATIVE TO COOLING
EQUIPMENT
The cooling coil must be installed parallel with or on downstream
side of furnace to avoid condensation in heat exchanger. When
installed parallel with a furnace, dampers or other means used to
control flow of air must prevent chilled air from entering furnace.
If dampers are manually operated, they must be equipped with a
means to prevent operation of either unit unless damper is in
full-heat or full-cool position.
—13—
A93058