Refrigerant Piping; Step 5 - Complete Electrical Connections - Carrier 40WAW007-024 Installation And Maintenance Instructions Manual

LEFT PIPING
LEFT BACK PIPING
RIGHT BACK PIPING
Fig. 8 — Condensate Pipe Routes

REFRIGERANT PIPING

CAUTION
When connecting from an indoor unit to an outdoor unit,
the isolation valve at the outdoor unit should be in closed
position throughout the refrigerant piping process. Failure
to follow this procedure may result in equipment damage.
When connecting from an indoor unit to an outdoor unit,
follow these procedures:
• Check maximum height drop and length of refrigerant
piping between the indoor and outdoor unit. If the differ-
ence between them is more than 33 ft, consider mounting
the outdoor unit above indoor unit.
• Refrigerant piping connection between indoor and out-
door units should be performed once the units are
secured at their respective installation locations.
• The refrigeration piping starts at the indoor unit and ends
at the outdoor unit.
• The number of bends in the refrigeration piping must be
fewer than 15.
• The refrigerant piping should be dry and free of dust and
other impurities.
• The bending angle of the refrigerant pipe should not
exceed 90 degrees and the bending radius should be as
large as possible to prevent any breakage in piping.
• Use proper cutting and flaring tools to avoid leakage.
• Before insulating the suction and liquid refrigeration
pipes, perform pressure and leak tests. For details, see
the outdoor unit installation manual. Insulating both suc-
tion and liquid refrigerant pipes is recommended.
• Vacuuming and charging of the system should be carried
out as described in the outdoor unit installation manual.
Step 5 — Complete Electrical Connections —
Installation of wiring must conform with local building codes
and with National Electric Code ANSI/NFPA 70, latest edi-
tions. Units must be electrically grounded in conformance with
the code. In Canada, wiring must comply with CSA C22.1,
Electrical Code.
WARNING
Electrical shock can cause personal injury and death. Dis-
connect power supply before making wiring connections.
There may be more than one disconnect switch. Tag all dis-
connect locations to alert others not to restore power until
work is completed.
All units must be wired strictly in accordance with the wir-
ing diagram furnished with the unit. Any wiring different
from the wiring diagram could result in personal injury and
property damage.
A40-1709
RIGHT PIPING
Any original factory wiring that requires replacement must
be replaced with wiring material having a temperature rat-
ing of at least 105 C.
Ensure supply voltage to the unit, as indicated on the serial
plate, is not more than 10% over the rated voltage or 10%
under the rated voltage.
Failure to follow these recommendations may result in
equipment damage.
This equipment in its standard form is designed for an elec-
trical supply of 208/230-1-60. Any damage to or failure of
units caused by incorrect wiring or voltage is not covered by
warranty.
Electric wiring must be sized to carry the full load amp
draw of the motor, starter, and any other controls that are used
with the unit. See Table 2 for electrical data.
MCA
MOPD — Maximum Overcurrent
After the pipe work is complete, the electrical supply can be
connected by routing the cable through the appropriate casing
holes or knockouts and connecting the supply and ground
cables to the unit's power terminal.
Be sure the power wiring and control wiring do not cross, as
this might cause disturbance on the controls side. See Fig. 9
and 10 for wiring diagrams.
6
WARNING
CAUTION
Table 2 — 40WAW Electrical Data
UNIT
MCA
40WAW007 0.2
40WAW009 0.2
40WAW012 0.2
40WAW015 0.3
40WAW018 0.3
40WAW024 0.6
LEGEND
— Minimum Circuit Amps
Protective Device
POWER SUPPLY
MOPD
15
15
15
15
15
15