Installation guide

Table 1--Refrigerant Connections and Recommended Liquid and Va
LIQUID VAPOR
UNIT SIZE
Connection Diameter Tube Diameter Connection Diameter Tube Diameter
018, 024 3/8 3/8 5/8 5/8
030, 036 3/8 3/8 3/4 3/4
042, 048 3/8 3/8 7/8 7/8
060 3/8 3/8 7/8 !-1/8
_or Tube Diameters (In.)
VAPOR (LONG LINE)
Connection Diameter Tube Diameter
5/8 3/4
3/4 7/8
7/8 1-1/8
7/8 1-1/8
Notes: 1 Tube diameters are for lengths up to 50 ft. For tube sets over 50 ft horizontal and/or 20 ft vertical differential consult Residential Long-Line Application GuideIine.
2. Do not apply capilIary tube indoor coils to these units.
INSTALLATION
Step l--Check Equipment and Job Site
UNPACK UNIT Move to final location. Remove carton taking
care not to damage unit.
INSPECT EQUIPMENT File claim with shipping company
prior to installation if shipment is damaged or incomplete. Locate
unit rating plate on unit service panel. It contains information
needed to properly install unit. Check rating plate to be sure unit
matches job specifications.
Step 2--Install on a Solid, Level Mounting Pad
If" conditions or local codes require the unit be attached to a pad,
tie down bolts should be used and fastened through knockouts
provided in unit base pan. Refer to unit mounting pattern shown in
Fig. 2 to determine base pan size and knockout hole location.
On rooftop applications, mount on level platform or frame. Place
unit above a load-bearing wall and isolate unit and tubing set fi'om
structure. Arrange supporting members to adequately support unit
and minimize transmission of vibration to building. Consult local
codes goveruing rooftop applications.
Roof mounted units exposed to winds above 5 mph may require
wind baffles. Consult Low-Ambient Guideline for wind baffle
construction.
NOTE: Unit must be level to within ±2 ° per compressor manu-
facturer specifications.
Step a--Clearance Requirements
When installing, allow sufficient space for airflow, wiring, refrig-
erant 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
3/8-1N DIA TIEDOWN --_
KNOCKOUTS IN BASEPAN \
(2) PLACES \
o
/ ."......,/V o T \ ",>.:_
I" ,,',_t.:(( '>_!/_ql
\ c. _ ,£\ _ 2 ,/2 /?:>
VIEW FROM TOP I _
!
A
8 3/16"
Dimensions (In.)
UNIT BASE TIEDOWN KNOCKOUT LOCATIONS
PAN DIMENSIONS A B
22.5 X 27.5 2-13/!6 6-15/16
30.0 X 35.0 4 9-3/4
Fig. 2--Clearance Requirements
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 fall directly on unit.
On rooftop applications, locate unit at least 6 in. above roof
surface.
Step 4_Operating Ambient
The mininmm outdoor operating ambient in cooling mode is 55°F,
and the maxinmm outdoor operating ambient in cooling mode is
125°F.
Step 5--Replace Indoor AccuRater TM 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 con'ect for any approved indoor coil combination.
Remove indoor coil piston if unit is to be installed on system
with a thermostatic expansion valve (TXV) metering device.
NOTE: Avoid contact between tubing and structure
____OOTOOO WA L-- ,.OOO WAL>.
CAULK ' r fz_ L,QU,DTUBE
SULATI
THROUGH THE WALL
HANGER STRAP-- N _f"---JOIST
(AROUND VAPOR N, --
_i I VAPOR TUBE
()
h
1"MIN.--,-I
LIQUID TUBE
SUSPENSION
Fig. 3--Piping Installation
A94028