Installation guide

NOTE:Avoidcontactbetweentubingandstructure
_---OUTDOORWALL-_ INDOORWALL7
_ CAULK IQUIDTUBE
LINSULATION__ _/__ _ VAPORTUBE
THROUGH THE WALL
HANGER STRAP'_k ,,_ JOIST
(AROUNDTuBEVAPOR_oNLY)_, _ _ INSULATION
_1 ( i ]_ --vAPOR TUBE
LIQUID TUBE
SUSPENSION
A94028
Fig. liOonnecting Tubing Installation
NOTE: Check to be certain factory tubing on both indoor and outdoor unit has not been shifted during shipment. Ensure tubes are not rubbing
against each other or any sheet metal. Pay close attention to feeder tubes, making sure wires on feeder tubes are secure and tight.
NOTE: Check factory wiring and wire connections to ensure terminations are secured properly. Check wire routing to ensure wires are not in
contact with tubing, sheet metal, etc.
PROCEDURE 2ilNSTALL ON A SOLID, LEVEL MOUNTING PAD
if conditions or local codes require the unit be attached to pad, tie down bolts should be used and fastened through knockouts provided in unit
base pan. Refer to unit mounting pattern in Fig. 2 to determine base pan size and knockout hole location.
Arrange supporting members to adequately support unit and minimize transmission of vibration to building. Consult local codes governing rooftop
applications.
NOTE: Unit must be level to within ± 2 ° (± 3/8 in./ft).
PROCEDURE 3--CLEARANCE REQUIREMENTS
When installing, allow sufficient space for airflow clearance, wiring, refi'igerant piping, and service. Allow 30*in. clearance to service end of unit
and 48 in. above unit. For proper airflow, a 6-in. clearance on 1 side of unit and 12 in. on all remaining sides must be maintained. Maintain a
distance of 24 in. between units. Position so water, snow, or ice from roof or eaves cannot tall directly on unit.
On rooftop applications, locate unit at least 6 in. above roof surface.
PROCEDURE 4--OPERATING AMBIENT (OUTDOOR TEMPERATURES)
The minimum outdoor operating ambient in cooling mode is 55°F ", and the maximum outdoor operating ambient in cooling mode is 125°F ".
PROCEDURE 5---REPLACE INDOOR CHECK*FLO*RATER® PISTON, IF REQUIRED
Check indoor coil piston to see if it matches the required piston shown on outdoor unit rating plate. If it does not match, replace indoor coil piston
with piston shipped with outdoor unit. The piston shipped with outdoor unit is correct for any approved indoor coil combination.
PROCEDURE 6--MAKE REFRIGERANT TUBING CONNECTIONS
Outdoor units may be connected to indoor sections using accessory tubing package or field*supplied refrigerant grade tubing of correct size and
condition. For tubing requirements beyond 50 ft, consult Long-Line Application Guideline which is available at your local distributor. Connect
tubing to fittings on outdoor unit vapor and liquid service valves. (See Table 1.)
if refrigerant tubes or indoor coil is exposed to atmospheric conditions for longer than 5 minutes, it must be evacuated to 500 microns to eliminate
contamination and moisture in system.
A. Outdoor Unit Connected to Factory Approved Indoor Unit
Outdoor unit contains correct system refrigerant charge for operation with indoor unit of same size when connected by 15 fl of field*supplied or
factory accessory tubing. Check refi'igerant charge for maximum efficiency. (See Procedure 11--Check Charge.)
Z_x CAUTION: To avoid valve damage while brazing, service valves must be wrapped with a heat*sink material such as a
wet cloth.
.... 2m.