Cancels: II 569D-72-1 II 569D-72-2
9/15/04
CONTENTS
Page
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . 1
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-14
I. Complete Pre-Installation Checks . . . . . . . . . . . . . . 1
II. Rig and Mount the Unit . . . . . . . . . . . . . . . . . . . . . . . 9
III. Complete Refrigerant Piping
Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
IV. Install Accessories . . . . . . . . . . . . . . . . . . . . . . . . . 11
V. Complete Electrical Connections. . . . . . . . . . . . . . 11
PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
I. System Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
II. Leak Test and Dehydration . . . . . . . . . . . . . . . . . . . 15
III. Turn On Crankcase Heater . . . . . . . . . . . . . . . . . . . 15
IV. Preliminary Charge . . . . . . . . . . . . . . . . . . . . . . . . . 15
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15-20
I. 569D, 566E, 569F Units . . . . . . . . . . . . . . . . . . . . . . 15
II. 576C, 566D Units . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
OPERATING SEQUENCE. . . . . . . . . . . . . . . . . . . . . . . . 20, 21
I. Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
II. Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21-24
I. Capacity Control (576C, 566D Units) . . . . . . . . . . . 21
II. Head Pressure Control
(566D, 566E150-240 Units Only) . . . . . . . . . . . . . 21
III. Time Guard II Circuit (566D Only). . . . . . . . . . . . . . 21
IV. Crankcase Heater . . . . . . . . . . . . . . . . . . . . . . . . . . 22
V. Compressor Protection . . . . . . . . . . . . . . . . . . . . . . 22
VI. Low-Pressure Switches. . . . . . . . . . . . . . . . . . . . . . 22
VII. High-Pressure Switches . . . . . . . . . . . . . . . . . . . . . 22
VIII. Discharge Gas Thermostat . . . . . . . . . . . . . . . . . . . 22
IX. Outdoor Fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
X. Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
XI. Coil Cleaning and Maintenance . . . . . . . . . . . . . . . 22
TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . 25, 26
START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . . CL-1, CL-2
SAFETY CONSIDERATIONS
Installing, starting up, and servicing air-conditioning equip-
ment can be hazardous due to system pressures, electrical
components, and equipment location (roofs, elevated struc-
tures, etc.).
Only trained, qualified installers and service mechanics
should install, start-up, and service this equipment.
Untrained personnel can perform basic maintenance func-
tions such as cleaning coils. All other operations should be
performed by trained service personnel.
When working on the equipment, observe precautions in
the literature and on tags, stickers, and labels attached to
the equipment.
Follow all safety codes. Wear safety glasses and work gloves.
Keep quenching cloth and fire extinguisher nearby when
brazing. Use care in handling, rigging, and setting bulky
equipment.
INSTALLATION
I. COMPLETE PRE-INSTALLATION CHECKS
A. Uncrate Unit
Remove unit packaging except for the top skid assembly,
which should be left in place until after the unit is rigged
into its final location.
B. Inspect Shipment
File claim with shipping company if shipment is damaged or
incomplete.
C. Consider System Requirements
• Consult local building codes and National Electrical Code
(NEC) for special installation requirements.
• Allow sufficient space for airflow clearance, wiring, refrig-
erant piping, and servicing unit. See Fig. 1-4 for unit
dimensions and weight distribution data.
• Locate unit so that outdoor coil (condenser) airflow is
unrestricted on all sides and above.
• Unit may be mounted on a level pad directly on the base
channels or mounted on a raised structural steel frame.
See Tables 1A to 1C for unit operating weights. See
Fig. 1-4 for weight distribution based on recommended
support points.
NOTE: If vibration isolators are required for a particular
installation, use the data in Fig. 1-4 to make the proper
selection.
WARNING: Before installing or servicing system,
always turn off main power to system and install lock-
out tag on disconnect. There may be more than one dis-
connect switch. Electrical shock can cause personal
injury.
installation, start-up and
service instructions
COMMERCIAL AIR-COOLED
CONDENSING UNITS
566D/E
569D/F
576C
Sizes 072-240
6to20Tons
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