Low- -Heat Only Installation; Location Relative To Cooling Equipment; Hazardous Locations; Installation - Carrier 58UVB series Installation, Start-Up, And Operating Instructions Manual

CAUTION
!
UNIT DAMAGE HAZARD
Failure to follow this caution may result in minor property
or unit damage.
If these furnaces are installed in an unconditioned space
where ambient temperatures may be 32_F or lower, freeze
protection measures must be taken. See Condensate Drain
Protection section and Fig. 11.
32 o F MINIMUM INSTALLED
AMBIENT OR FREEZE
PROTECTION REQUIRED
Fig. 11 --- Freeze Protection
Step 2 —Low- -Heat Only Installation
This 58UVB furnace can be installed to operate in the low- -heat
only heating mode when sized using the low- -heat heating
capacity. This is accomplished by placing setup switch SW1- -2 in
the ON position to provide only low- -heat operation. See Fig. 33
and Table 9. With this setup, high- -heat operation will not occur.
CAUTION
!
UNIT DAMAGE HAZARD
Failure to follow this caution may result in minor property
or unit damage.
The furnace can operate in the high- -heat mode when
certain fault conditions occur. The following precautions
should be taken:
1. Size gas piping based on the high- -heat input.
2. Check the high- -heat input and adjust it per the main
literature instructions.
Step 3 —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 shall be adequate to 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.
Step 4 —Hazardous Locations
!
FIRE, EXPLOSION,
HAZARD
Improper location or inadequate protection could result
in fire or explosion.
When furnace is installed in a residential garage, it must
be installed so that burners and ignition sources are
located a minimum of 18 in. above floor. The furnace
must be located or protected to avoid physical damage
by vehicles. When furnace is installed in a public
garage, airplane hangar, or other building having a
hazardous atmosphere, unit must be installed in
accordance with
Protection Association, Inc. (See Fig. 5.)
A93058
5 ⁄
16
1
5
Step 1 —Leveling Legs (If Desired)
When furnace is used in upflow position with side inlet(s),
leveling legs may be desired. (See Fig. 12.) Install field- -supplied,
corrosion- -resistant 5/16- -in. machine bolts and nuts.
NOTE: The maximum length of bolt should not exceed 1- -1/2
in.
1. Position furnace on its back. Locate and drill a 5/16- -in.
diameter hole in each bottom corner of furnace. (See Fig.
12.) Holes in bottom closure panel may be used as guide
locations.
10
WARNING
INJURY OR
requirements of National Fire
"
5
⁄
"
16
3 ⁄
"
4
1 3 ⁄
"
4
⁄
"
16
5 ⁄
"
16
1 3 ⁄
"
4
1 3 ⁄
"
4
Fig. 12 --- Leveling Legs

INSTALLATION

DEATH
A89014