Installation guide

NOTE:Avoidcontact between tubing and structure
OUTDOOR WALl: INDOOR WALL
CAULK_IQUID TUBE
_L.__INSULATION _7'_y _'_ L.-- VAPOR TUBE
THROUGH THE WALL
F,,_[,{_T_[,]: I
HANGER STRAP
(AROUNDVAPOR--_--
TUBE_I i,
h
.,_r/'-JOIST
INSULATION
VAPORTUBE
1" MIN _
LIQUID TUBE
SUSPENSION
A94028
Fig. 3--Piping Installation
Step 3--Clearance Requirements
When installing, allow sufficient space for airflow, wiring, ret_ig-
erant piping, and service, Allow 30 in. clearance to service end of
unit and 48 in. abouve unit. For proper airflow, a 6 in. clearance on
1 side of anit and 12 in. on all remaining sides must be main_aineO.
Maintain a distance of 24 m. between units. Position so water.
snow, or ice from roof or eaves cannot fall directly on unit.
On rooftop appfications, locate unit at feast 6 in. above roof
surface.
Step 4--Operating Ambients
The minimum outdoor operating ambient in ¢ooling mode is 55°F.
and the maximum outdoor operating ambient in cooling mode is
125°F.
Step 5--Replace Indoor AccuRater_ Piston, if Required
Check indoor coil piston to see if it matches the required piston
shown on unit rating plate. If it does not match, replace indoor coil
piston with piston shipped with this unit. The piston shipped with
outdoor unit is correct for any approved indoor coil cmnbination.
g_] ['_-t iJ[']21
Step 6--Make Tubing Connections
Vt_lLrJ/'-._:UI17[_]
Relieve pressure and recover all refrigerant before syslem
repair or final unit disposal to avoid per_onal mjut 3' or dcznb.
Use all ,service pots and open all flow-control devices.
including solenoid valves.
.___)
To prevent damage h) urm or service valves observe the
1hi)owing:
• Use a brazing shield.
• Wrap service valves with wet cloth or use a heat sink
ma_eriah
Outdoor units may be connected to indoor section using accessory
tubing package or field-supplied refrigerant tubing of correct size
and condition. For tubing requiremcnts beyond 50 It. substantial
capacity and performance losses can occur. Following the recom-
mendations in the Residential Split System Long-Line Application
Guideline will reduce these losses. Refer to Table I for field tubing
equivalent line length. Refer to Table 2 for accessory require-
morns.
---). For buried-line applications greater than 36 in.. consult your local
distributor.
If refrigerant tubes or indoor coil are exposed to atmosphere, they
must be evacuated to 500 microns to eliminate contamination and
moisture in the system,
OUTDOOR UNIT CONNECTED TO FACTORY-APPROVED
INDOOR UNIT-- Outdoor unit contains correct system refriger-
ant charge for operation with indoor unit of same size when
connected by 15 fi of field-supplied or factory-accessory tubing.
Check refrigerant charge for maximum efficiency.
REFRIGERANT TUBING- Connect tubing to fittings on out-
door unit vapor and liquid service valves. (See Table 1.) Use
refrigerant grade tubing.
SWEAT CONNECTION -- Service valves are closed from fac-
tory and ready for brazing. After wrapping the service valve with
a wet cloth, the robing set can be brazed to the service valve using
either silver bearing or non-silver bearing brazing material. Con-
sult local code requirements. Refrigerant tubing and indoor coil are
now ready for leak testing. This check should include all field and
factory joints.
To avoid valve damage while brazing, service valves must be
wrapped in a heat-sinking material such as a wet cloth.
Step 7--Make Electrical Connections
Be sure field wiring complies with local and national fire. safety.
and electrical codes, and voltage to system is within limits shown
on unit rating plate. Contact local power company for correction of
improper voltage. See unit rating plate lbr recommended circuit
protection device
NOTE: Operation of unil on bnproper line voltage constitutes
abuse and could aft_ct unit reliability. See unit rating plate. Do not
install unit in system where voltage or phase imbalance may
fluctuate above or below permissible limits,
NOTE=: Use copper wire only between disconnect switch and
unit.
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