Table of Contents
Advertisement
Calculate actual charge required with installed liquid line size and length using:
1/4" O.D. = .3 oz./ft.
5/16" O.D. = .4 oz./ft.
3/8" O.D. = .6 oz./ft.
1/2" O.D. = 1.2 oz./ft.
With an accurate scale (+/– 1 oz.) or volumetric charging device, adjust charge dif-
ference between that shown on the unit data plate and that calculated for the new
system installation. If the entire system has been evacuated, add the total calculat-
ed charge.
12.3 FINAL LEAK TESTING
After the unit has been properly evacuated and charged, a halogen leak detector
should be used to detect leaks in the system. All piping within the condensing unit,
evaporator, and interconnecting tubing should be checked for leaks. If a leak is
detected, the refrigerant should be recovered before repairing the leak. The Clean
Air Act prohibits releasing refrigerant into the atmosphere.
13.0 ELECTRICAL WIRING
WARNING
Turn off electric power at the fuse box or service panel before making any
electrical connections.
Also, the ground connection must be completed before making line volt-
age connections. Failure to do so can result in electrical shock, severe
personal injury or death.
CAUTION
Single-pole contactors are used on all standard single-phase units up
through 5 tons. Caution must be exercised when servicing as only one leg
of the power supply is broken with the contactor.
Field wiring must comply with the National Electric Code (C.E.C. in Canada) and
any applicable local code.
13.1 POWER WIRING
It is important that proper electrical power from a commercial utility is available at
the condensing unit contactor. Voltage ranges for operation are shown in Table 6.
Install a branch circuit disconnect within sight of the unit and of adequate size to
handle the starting current (see Tables 1 and 2).
Power wiring must be run in a rain-tight conduit. Conduit must be run through the
connector panel below the access cover (see Figure 1) and attached to the bottom
of the control box.
Connect power wiring to contactor located in outdoor condensing unit electrical box.
(See wiring diagram attached to unit access panel.)
Check all electrical connections, including factory wiring within the unit and make
sure all connections are tight.
DO NOT connect aluminum field wire to the contactor terminals.
TABLE 6
VOLTAGE RANGES (60 HZ)
Nameplate Voltage
208/230 (1 Phase)
208/230 (3 Phase)
460
575
Operating Voltage Range at Copeland
Maximum Load Design Conditions for
Compressors
187 - 253
187 - 253
414 - 506
517 633
17
Advertisement
Table of Contents
Troubleshooting
