Equipment - Carrier 58MXA Installation, Start-Up, And Operating Instructions Manual

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BACK
A93043
Fig. 14--Prohibit Installation on Back
FIRE HAZARD
Failure to %llow this warning could result in fire, property
damage, personal injury or death.
Do not install furnace on its back. Safety control operation
will be adversely affected. Never connect return=air ducts to
back of Nmace. (See Fig. 140
[TNIT DAMAGE HAZARD
This gas fire, ace may be used fbr construction heat provided
that:
-The ftm_ace is permanently installed with all electrical
wiring, piping, air filters, venting and ducting installed
according to these installation instructions. A retnrn air duct
is provided, sealed to the furnace casing, and terminated
outside the space containing the fkmlace. This prevents a
negative pressure condition as created by the circulating air
blower, causing a flame rollout and/or &awing combustion
products into the stl_acture.
-The furnace is controlled by a thermostat. It may not be "hot
wired" to provide heat continuously to the strt/cture without
thermostatic control.
-(lean outside air is provided for combustion. This is to
minimize the corrosive effects of adhesives, sealers and other
construction materials. It also prevents the entrainment of
dwwall dust into cornbusfion air, which can cause %uling and
plugging of Nmace components.
-The temperature of the return air to the fhmace is maintained
between 55cT (13c>() and 80°F (27_>(), with no evening
setback or shutdown. The use of the Nmace while the
stl_acture 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 nmst be either changed or thoroughly
cleaned prior to occupancy.
-The Nmace, ductwork and filters are cleaned as necessary to
remove &ywall dust and construction debris t)om all HVAC
system components after construction is completed.
-After construction is complete, verify Nmace operating
conditions including ignition, input rate, temperature rise and
venting, according to the manufi_cmrer's instluctions.
A93058
Fig. 15--Freeze Protection
M
[NIT DAMAGE HAZARD
Failure to £bllow this caution may result in minor property or
unit damage.
If Nrnace is installed in an unconditioned space where the
arnbient temperatures may be 3UT or lower, fi'eeze protection
measures must be taken. (See Fig. 15.)
Step 2--Furnace Location Relative to Cooting
Equipment
)"he cooling coil must be installed parallel with or oll downstream
side of t:urnace to avoid condensation in heat exchanger. When
installed parallel with a fi/mace, dampers or other means used to
control flow of air shall be adequate to prevent chilled air from
entering t:urnace. If dampers are manually operated, they must be
equipped with a means to prevent operation of either unit, unless
damper is in fgll=heat or full-cool position.
Step a--Hazardous Locations
14
FIRE, EXPLOSION, IN J[ RY OR DEATH HAZARD
Improper location or inadequate protection could result in fire
or explosion
When fhmace is installed in a residential garage, it must be
installed so that burners and ignition sources are located a
mininmn_ of 18 in. above floor. The fi/mace must be located
or protected to avoid physical damage by vehicles. When
ft_rnace is installed in a public garage, airplane hangar, or
other building having a hazardous atmosphere, the t'umace
must be installed in accordance with NFGC or NS(NGPIC.
(See Fig. 16.)
mNSTALLATION
Step l--Leveling Legs {ff Desired)
When f_/rnace is nsed in upftow position with side inlet(s), leveling
legs may be desired. (See Fig. I7.) 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. 17.)
Holes in bottom closure panel may be used as guide locations.