2
INSTALLATION
IMPORTANT
: Effective January 1, 2015, all split system and
packaged air conditioners must be installed pursuant to applicable
regional efficiency standards issued by the Department of Energy.
CUT HAZARD
Failure to follow this caution may result in personal injury.
Sheet metal parts may have sharp edges or burrs. Use care and
wear appropriate protective clothing and gloves when
handling parts.
CAUTION
!
!
WARNING
UNIT OPERATION AND SAFETY HAZARD
Failure to follow this warning could result in personal injury
or equipment damage.
Puron (R
−
410A) refrigerant systems operate at higher
pressures than standard R
−
22 systems. Do not use R
−
22
service equipment or components on Puron refrigerant
equipment.
PERSONAL INJURY AND EQUIPMENT DAMAGE
HAZARD
Failure to follow this caution may result in personal injury
and / or equipment damage.
DO NOT
operate the unit without a filter or with grille
removed.
CAUTION
!
COMPLETE PRE
−
INSTALLATION CHECKS
Unpack Unit
Move the unit to final location. Remove unit from carton, being
careful not to damage service valves and grilles.
Inspect Shipment
File a claim with the shipping company if shipment is damaged or
incomplete. Check the unit nameplates to ensure units match job
requirements.
Consider System Requirements
Consult local building codes and NEC for special installation
requirements.
Allow sufficient space for airflow clearance, wiring, refrigerant
piping, and servicing unit. Locate unit so that condenser airflow is
unrestricted on both sides.
Unit may be mounted on a level pad directly on base legs or
mounted on raised pads at support points.
RIG AND MOUNT UNIT
Mounting on Ground
Mount unit on a solid, level concrete pad. Position unit so water or
ice from roof does not fall directly onto unit. Use field
−
provided
snow stand or ice rack where prolonged subfreezing temperatures
or heavy snow occurs.
If conditions or local codes require unit be fastened to a pad, 6
field
−
supplied tie
−
down bolts should be used and fastened through
slots provided in unit mounting feet.
Mounting on Roof
Mount unit on a level platform or frame at least 6 in. (152.4 mm)
above roof surface. Isolate unit and tubing from structure.
Clearance Requirements
Single Unit Applications: With coil facing wall: Allow 6” (152.4
mm) minimum clearance on coil side and coil end and 20” (504.0
mm) minimum clearance on fan side. Allow 24” (609.6 mm)
minimum clearance on compressor end for service.
With fan facing wall: Allow 8” (203.2 mm) minimum clearance on
fan side and coil end and 20” (504.0 mm) minimum clearance on
coil side. Allow 24” (609.6 mm) minimum clearance on
compressor end for service when units are stacked or there is less
than 40” (1016 mm) of clearance above the unit. If there is 40”
(1016 mm) clearance above unit and the top panel is accessible for
removal allow 8” (203.2 mm) minimum clearance on compressor
end for service.
Multi
−
unit Applications: Allow 24” (609.6 mm) minimum
clearance between fan and coil sides of multiple units. Arrange
units so discharge of one does not enter inlet of another. Allow 24”
(609.6 mm) minimum clearance on compressor end when units are
stacked or there is less than 40” (1016 mm) of clearance above the
unit. If there is 40” (1016 mm) clearance above unit and the top
panel is accessible for removal allow 8” (203.2 mm) minimum
clearance on compressor end for service.
When two units are installed end to end with the coil ends facing
each other allow 12” (304.8 mm) minimum clearance between
units.
IMPORTANT
: When installing multiple units, ensure the
discharge air from one unit is not drawn into another unit. When
installing single or multiple units in an alcove, roof well, or
partially enclosed area, ensure there is adequate ventilation to
prevent recirculation of discharge air.
Operating Ambient
Minimum outdoor operating ambient in cooling mode is 55
_
F
(13
_
C), maximum 125
_
F (52
_
C).
Rigging
PERSONAL INJURY AND/OR EQUIPMENT
DAMAGE HAZARD
Failure to follow this caution may result in personal injury
and/or equipment damage.
Be sure unit panels are securely in place prior to rigging.
CAUTION
!
Keep the unit upright and lift unit using a sling. Use cardboard or
padding under the sling, and spreader bars to prevent sling damage
to the unit. See Fig. 2. Install the unit so that the coil does not face
into prevailing winds. If this is not possible and constant winds
above 25 mph are expected, use accessory wind baffle. See
installation instructions provided with the accessory kit.
NOTE
: Accessory wind baffles should be used on all units with
accessory low ambient temperature control.
Field
−
fabricated snow or ice stands may be used to raise unit when
operation will be required during winter months. Units may also be
wall mounted using the accessory wall mounting kit.
A07396
Fig. 2
-
Lifting Unit with Sling