Install Electrical Connections; High- -Voltage Connections - Carrier 50ZPA Installation Instructions Manual

UNIT SIZE
NOMINAL CAPACITY (ton)
OPERATING WEIGHT (lb.)
COMPRESSOR
REFRIGERANT (R- - 22)
Quantity (lb.)
REFRIGERANT METERING DEVICE
Orifice ID (in.)
Orifice OD (in.)
CONDENSER COIL
Rows...Fins/in.
Face Area (sq. ft.)
CONDENSER FAN
Nominal Cfm
Diameter
Motor HP (RPM)
EVAPORATOR COIL
Rows...Fins/in.
Face Area (sq. ft.)
Evaporator blower
Nominal Airflow (Cfm)
Size (in.)
Motor HP (RPM)
CONNECTING DUCT SIZES
Supply Air (in.)
Return Air (in.)
Return- - Air Filters (in.)* Throwaway
*Required filter sizes shown are based on the ARI (Air conditioning & Refrigeration Institute) rated airflow at a velocity of 300 ft/min for throwaway type or 450
ft/min for high capacity type. Recommended filters are 1 ---in. thick.
Table 2—Minimum Airflow for Safe
Electric Heater Operation
Minimum Airflow (CFM)
Unit Size
5kW 7.5kW
024 400 550
030 450 600
036 450 600
042 450 600
048 450 600
060 450 600
Step 7—Install Electrical Connections
WARNING
!
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury
or death.
The unit cabinet must have an uninterrupted, unbroken
electrical ground to minimize the possibility of personal injury
if an electrical fault should occur. This ground may consist of
an electrical wire connected to the unit ground screw in the
control compartment, or conduit approved for electrical
ground when installed in accordance with NEC, ANSI/NFPA
American National Standards
Protection Association (latest edition) (in Canada, Canadian
Electrical Code CSA C22.1) and local electrical codes.
Table 1—Physical Data
024 030
2 2- -1/2
268 299
6.8
0.067 0.067
0.049 0.057
2...21 2...21
11.1 12.7
2600 2600
20
1/8 (825) 1/8 (825)
3...17 3...17
4.3
800 1000
10x8 10x8
1/2 (1050) 1/2 (1050)
24 x 24 24 x 24
10kW 15kW 20kW
650
800 850
800 850 900
800 850 900
800 850 900
800 850 900
Institute/National Fire
036
3
352
Scroll
9.5 9.5
®
AccuRater
0.082
0.059
Copper Tubes, Aluminum Plate Fins
2...21
15.8
Propeller
3200
20 20
1/4 (1100) 1/4 (1100)
Copper Tubes, Aluminum Plate Fins
4...17
4.9 4.9
Direct Drive
1200
11x9
3/4 (1050) 3/4 (1050)
Round
14
14
24 x 24
CAUTION
!
UNIT COMPONENT DAMAGE HAZARD
Failure to follow this caution may result in damage to the unit
being installed.
1. Make all electrical connections in accordance with NEC
ANSI/NFPA (latest edition) and local electrical codes
governing such wiring. In Canada, all electrical
connections must be in accordance with CSA standard
C22.1 Canadian Electrical Code Part 1 and applicable local
codes. Refer to unit wiring diagram.
2. Use only copper conductor for connections between
field- -supplied electrical disconnect switch and unit. DO
NOT USE ALUMINUM WIRE.
3. Be sure that high- -voltage power to unit is within operating
voltage range indicated on unit rating plate. On 3- -phase
units, ensure phases are balanced within 2 percent. Consult
local power company for correction of improper voltage
and/or phase imbalance.
4. Do not damage internal components when drilling through
any panel to mount electrical hardware, conduit, etc.

HIGH- -VOLTAGE CONNECTIONS

The unit must have a separate electrical service with a
field- -supplied, waterproof disconnect switch mounted at, or within
sight from the unit. Refer to the unit rating plate, NEC and local
codes for maximum fuse/circuit breaker size and minimum circuit
amps (ampacity) for wire sizing (See Table 5 for electrical data).
The field- -supplied disconnect may be mounted on the unit over the
high- -voltage inlet hole when the standard power and low- -voltage
entry points are used. See Fig. 6 and 7 for acceptable location.
5
042 048
3- -1/2 4
364 359
Ultra Tech Scroll
11.1 10.7
TXV
0.086 –
0.063 0.070
2...21 2...21
15.8 13.3
3200 3200
20 20
1/4 (1100) 1/2 (1100)
4...17 4...17
6.1 4.9
1400 1600
11x9 11x10
1 (1050)
24 x 30 30 x 30
060
5
408
12.5
–
0.073
2...21
15.8
3300
20
4...17
6.1
1875
11x10
1 (1050)
30 x 30