16
3. Read and record the indoor ambient wet bulb temperature entering the indoor
coil.
4. Use the appropriate charging chart to compare the actual liquid pressure to the
correct pressure as listed on the chart.
5. R-410A charging charts are listed on the unit.
CHARGING BY WEIGHT
For a new installation, evacuation of interconnecting tubing and evaporator coil is
adequate; otherwise, evacuate the entire system. Use the factory charge shown in
Table 1 of these instructions or unit data plate. Note that charge value includes
charge required for 15 ft. of standard size interconnecting liquid line. Calculate actu-
al charge required with installed liquid line size and length using:
1/4” O.D. = 0.2 oz./ft.
5/16” O.D. = 0.3 oz./ft.
3/8” O.D. = 0.5 oz./ft.
1/2” O.D. = 1.0 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.
NOTE: When the total refrigerant charge volume exceeds the values in Tables 1, 2
and 3, the manufacturer recommends installing a crankcase heater and start kit.
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 venting refrigerant into the atmosphere.
ELECTRICAL WIRING
Field wiring must comply with the National Electric Code (C.E.C. in Canada) and any
applicable local code.
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 7.
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.
!
CAUTION
R-410A PRESSURE ARE APPROXIMATELY 60% HIGHER THAN R-22
PRESSURES. USE APPROPRIATE CARE WHEN USING THIS REFRIGER-
ANT. FAILURE TO EXERCISE CARE MAY RESULT IN EQUIPMENT DAM-
AGE, OR PERSONAL INJURY.
TABLE 7
VOLTAGE RANGES (60 HZ)
Operating Voltage Range at Copeland
Nameplate Voltage Maximum Load Design Conditions for
Compressors
208/230 (1 Phase) 187 - 253
208/230 (3 Phase) 187 - 253
460 414 - 506
575 517 633
To Next Page
Loading...
Need help?
General
