Table 1 -- Physical Data
UNiT 50ZP 036 042 048 060
OPERATING WEIGHT {Ibs) 250 297 310 350
COMPRESSOR TYPE Reciprocating
REFRIGERANT Charge (Ib)
REFRIGERANT METERING DEVICE
CONDENSER COiL
Rows... Fins/in.
Face Area {sq ft)
CONDENSER-FAN MOTOR CFM
Nominal Rpm
Motor Hp
Diameter (in,)
EVAPORATOR COiL
Rows... Fins/in.
Face Area (sq ft)
EVAPORATOR FAN MOTOR
Blower Motor Size (in.)
Nominal Cfm
Rpm Range
Number of Speeds
Factory Speed Setting
Motor Hp
CONNECTING DUCT SIZES
Supply Air (in.)
Return Air (in.)
FIELD-SUPPLIED RETURN-AIR FILTERt
Throwaway (in.)
* 460-v motors are 2-speed or 3-speed.
4.7 J [ 7.5
2...17 2...17
8.2 10.7
2OOO
1100
1/4
2O
28OO
1100
1/4
2O
3...18 4...15
3.1 4.9
10x8
1200
800-1050
3
Low
1/2
4.4 __ 8.1
AcutroFMDevice
Copper Tubes, Aluminum Plate Fins
1...17 2...17
11.1 8.8
Propeller
2600 2600
1100 1100
1/4 1/4
20 20
Copper Tubes, Aluminum Plate Fins
3...15 3...15
3.9 4.3
Direct Drive
10x9 10x9
1400 1800
800-1050 1000-1100
3 2
Med Low
1/2 3/4
Round
14
14
24 x 24 | 24 x 30
/
Z
10 x 10
1850
950-1100
3*,2*
Low
1
Square
13.9 x 13.9
13.9 x 27.8
24 x 24 1 24 x 30
tRequired filter sizes shown are based on the ARI (Air Conditioning and 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.
condensate connection to prevent the pan b*Olnoverflowing. See
Fig. 9 and 10. Prime the trap with water. When using a gravel
apron, make sure it slopes away li"om the unit.
If the installation requires draining the condensate water away
from the unit, install a 2-in. trap using a 3/4-in. OD robing or pipe.
(See Fig. 9 and 10.) 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 li"om overflowing. Prime the trap with water.
Connect a drain tube using a minimum of 314-in. PVC, 314-in.
CPVC, or 3/4-in. copper pipe (all field supplied). Do not undersize
the tube. Pitch the drain tube downward at a slope of at least 1 in.
%r every 10 11of horizontal run. Be sure to check the drain tube
%r leaks. Prime trap at the beginning of the cooling season
start-up. Allowable glues lbr condensate trap connection are:
Standard ABS, CPVC, or PVC cement.
Step 7--Install Electrical Connections
The unit cabinet nmst 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 in
the control compamnent, or conduit approved lot electrical
ground when installed in accordance with NEC (National
Electrical Code), ANSI (American National Standards
lnstitute)/NFPA (latest edition) (in Canada, Canadian Elec-
trical Code CSA C22.1) and local electrical codes. Failure to
adhere to this warning could result in serious injury or death.
W . t!
Failure to R_llow these precautions could 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 connec-
tiens nmst be in accordance with CSA standard C22.1
Canadian Electrical Code Part 1 and applicable local
codes. Relier to unit wiring diagram.
2. Use only copper conductor %r 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.
4. Insulate low-voltage wires %r highest voltage contained
within conduit when low-voltage control wires are run in
same conduit as high-voltage wires.
5. Do net damage internal components when drilling through
any panel to mount electrical hardware, conduit, etc. On all
3-phase units, ensure phases are balanced within 2 percent.
Consult local power company %r correction of improper
voltage and/or phase imbalance.
HIGH-VOLTAGE CONNECTIONS
The unit nmst have a separate electrical service with a field-
supplied, waterproof disconnect switch mounted at, or within sight
from the unit. Relier to the unit rating plate lk_r maximum
fuse/circuit breaker size and mininmm circuit amps (ampacity) lot
wire sizing. See Table 3 lbr electrical data.
The field-supplied disconnect may be mounted on the unit over the
high-voltage inlet hole. See Fig. 2-4.
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