Carrier 58UVB series Installation, Start-Up, And Operating Instructions Manual page 9

be provided with ample space for servicing and
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cleaning. Always comply with minimum fire
protection clearances shown on the furnace
clearance- -to- -combustibles label. (See Fig. 3.)
This furnace may be located in a confined space without special
provisions for dilution or ventilation air.
NOTE: Install furnace so that it is level or pitched forward
within 1/2- -in. for proper furnace operation. (See Fig. 9.)
LEVEL (0")
TO
1 " MAX
⁄
2
UPFLOW
Fig. 9 --- Proper Condensate Drainage
When a furnace is installed so that supply ducts carry air
circulated by the furnace to areas outside the space containing the
furnace, the return air shall 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.
WARNING
!
FIRE, INJURY OR DEATH HAZARD
Failure to follow this warning could result in fire,
property damage, personal injury, or death.
Do not install furnace on its back. (See Fig. 10.) Safety
control operation will be adversely affected. Never
connect return- -air ducts to back of furnace.
FRONT
A06343
CAUTION
!
UNIT DAMAGE HAZARD
This gas furnace may be used for construction heat
provided that:
- -The furnace is permanently installed with all electrical
wiring, piping, air filters, venting and ducting installed
according to these installation instructions. A return air duct
is provided, sealed to the furnace casing, and terminated
outside the space containing the furnace. This prevents a
negative pressure condition as created by the circulating air
blower, causing a flame rollout and/or drawing combustion
products into the structure.
- -The furnace is controlled by a thermostat. It may not be
"hot wired" to provide heat continuously to the structure
without thermostatic control.
- -Clean outside air is provided for combustion. This is to
minimize the corrosive effects of adhesives, sealers and
other construction materials.
entrainment of drywall dust into combustion air, which can
cause fouling and plugging of furnace components.
- -The temperature of the return air to the furnace is
maintained between 55_F (13_C) and 80_F (27_C), with
no evening setback or shutdown. The use of the furnace
while the structure is under construction is deemed to be
intermittent operation per our installation instructions.
- -The air temperature rise is within the rated rise range on
the furnace rating plate, and the firing rate has been set to
the nameplate value.
- -The filters used to clean the circulating air during the
construction process must be either changed or thoroughly
cleaned prior to occupancy.
- -The furnace, ductwork and filters are cleaned as necessary
to remove drywall dust and construction debris from all
HVAC system components after construction is completed.
- -After construction is complete, verify furnace operating
conditions including ignition, input rate, temperature rise
and venting, according to the manufacturer's instructions.
FRONT
BACK
FRONT
Fig. 10 --- Prohibit Installation on Back
The furnace and its return air system shall be designed and
installed so that negative pressure created by the air circulating
fan cannot affect another appliance's combustion air supply or act
to mix products of combustion with circulating air, and that the
air circulating fan of the furnace, if installed in an enclosure
communicating with another fuel- -burning appliance not of the
direct- -vent type, shall be operable only when any door or panel
covering an opening in the furnace fan compartment or in a return
air plenum on ducts is in the closed position.
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It also prevents the
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A
C
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A93043