NOTE: Avoid contact between tubing and structure
OUTDOOR WALL INDOOR WALL
CAULK
LIQUID TUBE
VAPOR TUBE
INSULATION
THROUGH THE WALL
JOIST
HANGER STRAP
(AROUND VAPOR
TUBE ONLY)INSULATION VAPOR TUBE
1″ MIN.
LIQUID TUBE
SUSPENSION
A94028
Fig. 2—Connecting Tubing Installation
can be no deviation. Consult the Application Guideline and Service
I. CHECK EQUIPMENT AND JOB SITE
A. UNPACK UNIT
Move to final location. Remove carton taking care not to damage unit.
B. INSPECT EQUIPMENT
File claim with shipping company prior to installation if shipment is damaged or incomplete. Locate unit rating plate on unit corner panel. It contains information needed to properly install unit. Check rating plate to be sure unit matches job specifications.
II. INSTALL 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. 3 to determine base pan size and knockout hole location.
On rooftop applications, mount on level platform or frame. Place unit above a
Roof mounted units exposed to winds above 5 mph may require wind baffles. Consult the Application Guideline and Service
NOTE: Unit must be level to within ±2° (±3/8 in./ft) per compressor manufacturer specifications.
III. CLEARANCE REQUIREMENTS
When installing, allow sufficient space for airflow clearance, wiring, refrigerant piping, and service. Allow
A
C
L
B
3⁄8 IN. DIA TIEDOWN |
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KNOCKOUTS |
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(2) PLACES |
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IN BASEPAN |
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UNIT BASE PAN | TIEDOWN KNOCKOUT | ||||||||
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Fig. 3—Clearance Requirements
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 fall directly on unit.
On rooftop applications, locate unit at least 6 in. above roof surface.
IV. OPERATING AMBIENT
The minimum outdoor operating ambient in cooling mode is 55°F, and the maximum outdoor operating ambient in cooling mode is 125°F.
→V. CHECK INDOOR
If unit is to be installed with a piston metering device, proceed as follows:
1.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.
2.After correct piston is installed, locate neoprene piston ring shipped in piston bag. Install piston ring behind metering piston as shown in Fig. 4. The piston ring ensures that piston stays seated during all operating conditions.
→VI. INSTALL TXV
NOTE: ALL 556A and 550A060-H UNITS MUST BE IN-
STALLED WITH A HARD SHUT OFF PURON TXV.
The thermostatic expansion valve is specifically designed to operate with Puron®. Do not use an
NOTE: FK4 and FC4 fan coils are equipped with an
IMPORTANT: The TXV should be mounted as close to the indoor coil as possible and in a vertical, upright position. Avoid mounting the inlet tube vertically down. Valve is more susceptible to malfunction due to debris if inlet tube is facing down. A