FloAire Modular DX System - Manual (Page 2)

ELECTRICAL CONNECTIONS
CAUTION
Condensing units contain a factory holding charge of refrigerant .
Opening the liquid or suction line shut-off valves before the piping
has been braised, evacuated, and leak tested may result in
releasing the holding charge.
EPA Section 608 Clean Air Act
Section 608 of the “Clean Air Act”, prohibits individuals from
knowingly venting ozone-depleting compounds (refrigerant) into the
atmosphere while installing, maintaining, servicing, repairing, or
disposing of air-conditioners or refrigeration equipment.
EPA performs random inspections, responds to tips, and pursues
potential violators. Under the Act, EPA is authorized to fine up to
$32,000 per day for any violation of these regulations.
WARNING
Disconnect power before installing or servicing fan. High voltage electrical input is needed for this
equipment. This work should be performed by a qualified electrician.
Electrical wiring must be done in accordance with local ordinances and the National Electric Code, ANSI/
NFPA70. Be sure the voltage and phase of the power supply and the wire amperage capacity conform to those
listed on the units nameplate. For additional safety information, refer to AMCA publication 410-96,
“Recommended Safety Practices for Users and Installers of Industrial and Commercial Fans.”
AMU POWER SUPPLY
CONDENSER POWER SUPPLY
REMOTE PANEL
CONDENSER SINGLE COMPRESSOR (A)
CONDENSER SINGLE COMPRESSOR (B)
CONDENSER DUAL COMPRESSOR (A)
CONDENSER DUAL COMPRESSOR (B)
Check that the power supply matches the units
nameplate rating.
Wire the disconnect using NEC and local
codes. Size the wire according to the units
minimum circuit amps.
SW-01 MAIN DISCONNECT SWITCH
ST-01 SUPPLY MOTOR CONTACTOR
CB-01 CIRCUIT BREAKER
TR-01 POWER TRANSFORMER
Check that the power supply matches the units
nameplate rating.
Wire the disconnect using NEC and local
codes. Size the wire according to the units
minimum circuit amps.
AMU units that ship with a optional remote
panel must be field wired before starting the
unit.
The AMU terminal block will correspond with
the remote panel terminal block.
Use shielded cable on the wires for T1 and T3
for the remote set-point dial, or run the wired in
a separate conduit from the power wiring.
Option A
Wire single compressor condensers with R-G-
Y-W-C terminals to the AMU as shown.
Refer to the condensers installation manual for
additional wiring directions.
Option B
Wire single compressor condensers without R-
G-Y-W-C terminals to the AMU as shown.
Refer to the condensers installation manual for
additional wiring directions.
Option A
Wire dual compressor condensers with R-G-Y-
W-C terminals to the AMU as shown.
Refer to the condensers installation manual for
additional wiring directions.
Option B
Wire dual compressor condensers without R-
G-Y-W-C terminals to the AMU as shown.
Refer to the condensers installation manual for
additional wiring directions.
EVACUATION & REFRIGERANT CHARGING
•
Leave suction and liquid line valves closed
•
Open both refrigerant gauge valves and turn the vacuum pump ON
•
Evacuate the system until the micron gauge reads less than 500 microns
•
Repair leaks or check the hose connections if the micron gauge does not reach 500 microns
•
Close the refrigerant gauge valves and turn the vacuum pump OFF
EVACUATION
CHARGING
•
Check the condensing units Installation Manual and documentation on charging information, some condensing
units come with the full operating refrigerant charge
•
After evacuating the system, charge the system with 80% of the operating charge shown on the condensing units
name plate
•
After starting the unit add the remaining refrigerant charge and fine tune the charge so the units super-heat is
around 8 to 12 ̊ F
•
Remove the gauge lines and replace the suction and liquid line valve caps.
Check the condensing unit Installation Manual and documentation on charging instructions.
Some condensing unit come with the full operating refrigerant charge.
START-UP
Read the condensing unit and AMU installation, start-up, and operation guides
Fill out the start-up check lists and send them to the Factory Service Department
TECHNICAL SERVICE
Need additional help or have other questions?
Contact the factory service department.
715-595-4225 office
919-227-5959 fax
Suction Line
Valve
Liquid Line
Valve Micron Gauge
Refrigerant Gauge
Vacuum Pump
Suction Line
Valve
Liquid Line
Valve
Refrigerant Gauge
Scale
Refrigerant Tank