Install Electrical Connections - Carrier 50SZ Series Installation, Start-Up And Service Instructions Manual

UNIT SIZE
NOMINAL CAPACITY (ton)
OPERATING WEIGHT (lb.)
COMPRESSOR
REFRIGERANT (R-22)
Quantity (lb.)
REFRIGERANT METERING DEVICE
Orifice ID (in.)
CONDENSER COIL
Rows...Fins/in.
Face Area (sq. ft.)
CONDENSER FAN
Nominal Cfm
Diameter (in.)
Motor Hp (Rpm)
EVAPORATOR COIL
Rows...Fins/in.
Face Area (sq. ft.)
EVAPORATOR BLOWER
Nominal Airflow (Cfm)
Size (in.)
Motor Hp (RPM)
RETURN-AIR FILTERS (in.)*
Throwaway
*
Required filter sizes shown are based on the larger of the ARI (Air Conditioning and Refrigeration Institute) rated cooling airflow or the heating airflow velocity of 300
ft./min. for throwaway type. For permanent filters, follow filter manufacturer's recommendations for filter size based on allowable face velocity. Air filter pressure drop for
non-standard filters must not exceed 0.08 in. wg.
SIZE
AIRFLOW (CFM)
Horizontal Duct Covers
Fig. 10—50SZ with Duct Covers On
(Unit Shown with Optional Louvered Grille)
connection to ensure proper drainage. Condensate trap is available
as an accessory or is field-supplied. Make sure that the outlet of the
trap is at least 1 in. lower than the unit drain-pan condensate
connection to prevent the pan from overflowing. Connect a drain
trough using a minimum of field-supplied 3/4 -in. PVC or
field-supplied 3/4 -in. copper pipe at outlet end of the 2 -in. trap
(See Fig. 12). Do not undersize the tube. Pitch the drain trough
Table 1—Physical Data
024 030
2 2-1/2
343 366
8.0 8.4
0.065 0.070
2...21 2...21
11.9 13.6
2700 2700
22 22
1/8 (825) 1/8 (825)
3...17 3...17
3.7 3.7
800 1000
10x10 10x10
1/3 (1050) 1/3 (1050)
20x24x1 20x24x1
Table 2—Minimum Airflow for Safe Electric Heater
Operation (Cfm)
024 030
800 1000
C99030
036 042
3 3-1/2
433 460
Scroll
10.9 11.0
Accurater
0.080 0.088
2...21 2...21
15.5 19.4
2800 2800
22 22
1/8 (825) 1/8 (825)
3...17 3...17
4.7 4.7
1200 1400
11x10 11x10
1/2 (1000) 1/2 (1075)
24x36x1 24x36x1
036 042
1200 1400
downward at a slope of at least 1 in. every 10 ft. of horizontal run.
Be sure to check the drain trough for leaks. Prime the trap at the
beginning of the cooling season start-up.
1" (25mm) MIN.
Fig. 11—Condensate Trap
Step 7—Install Electrical Connections
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 Institute/National
Fire Protection Association (latest edition) (in Canada, Cana-
dian Electrical Code CSA C22.1) and local electrical codes.
8
048 060
4 5
480 492
12.3 12.0
0.088 0.101
2...21 2...21
19.4 19.4
3300 3300
22 22
1/4 (1100) 1/4 (1100)
3...17 4...17
5.6 5.6
1600 1750
11x10 11x10
1/2 (1075) 1.0 (1040)
24x36x1 24x36x1
048 060
1600 1750
TRAP
OUTLET
2" (50mm) MIN.
C99013