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Table
I - Physical
Data
UNIT 50PM
20
24
28
NOMINAL CAPACITY
(TONS)
18
20
25
VOLTAGE
(volts)
208/230 / 460 / 575
208/230 / 460 / 575
208/230 / 460 / 575
OPERATING
WEIGHT
(Ibe)
Unit*
2216
2269
2389
Economizer
170
170
195
Roof Curb 14-in
... 24-in
305 ... 385
305 ... 385
270 ... 345
REFRIGERANT
SYSTEM
Puron (410a) ... Balanced-Port
TXV with Bypass
2...2
2...2
2...2
13.7 ... 12.0
15.0 ... 15.0
16.7 ... 16.7
Scroll
Copeland
3MA
110...60
110...110
110...110
630+/-10
... 505+/-20
630+/-10
... 505+/-20
630+/-10
... 505+/-20
40 +/-
7 ... 80 +/-7
40 +/-
7 ... 80 +/-7
40 +/-
7 ... 80 +/-7
30 +/-5
... 45 +/-5
30 +/-5
... 45 +/-5
30 +/-5
... 45 +/-5
Microchannel
Outer...Inner
Outer...Inner
Outer...Inner
1 ... 20
1 ... 20
1 ... 20
52.6
57
65.5
Propeller
4 ... 22
6 ... 22
6 ... 22
14400
21000
21000
0.25 ... 1400
0.25 ... 2100
0.25 ... 2100
1100
1100
1100
Round Tube Plate Fin
Bottom...Top
Bottom...Top
Bottom...Top
4..15
4..15
4..15
23.1
23.1
28.9
3/4 NPT
3/4 NPT
3/4 NPT
Refrigerant
... Metering Device
# Circuits ... # Comp.
STD Unit Charge A ... B (Ibs)
COMPRESSOR
Oil Type
Oil A...
B... C (oz)
HIGH-PRESSURE
SWITCH
(peig)
Cutout ... Reset (Auto.)
LOW- PRESSURE
SWITCH
(psig)
Cutout ... Reset (Auto.)
FREEZE PROTECTION
THERMOSTAT
Opens...
Closes
CONDENSER
COIL
Circuit A ... B
Rows... Fins/in.
Face Area (sq ft)
CONDENSER
FAN (type)
Quantity...Diameter
(in.)
Nominal CFM (Total, all fans)
Motor Hp ... Watts
Nominal RPM
EVAPORATOR
COIL
Circuit A ... B
Rows... Fins/in.
Face Area (sq ft)
Condensate
drain conn. Size (in.)
EVAPORATOR
FAN (see motor & drive tables
for more)
Fan Quantity
... Size (in.)
Type Drive
Nominal CFM
Fan Bearing Type
Maximum Fan RPM
Blower Shaft Diameter
(in.)
Blower Pulley Type
2 ...15xll
Belt
7200
1400
1.1875
Fixed
2 ...15xll
Belt
8000
Ball-
Concentric
Lock
1400
1.1875
Fixed
2 ...15xll
Belt
10000
1400
1.1875
Fixed
FILTERS
RA Filter # ... size (in)
9 ... 16x25
9 ... 16x25
9 ... 20x25
Economizer
CA inlet screen # ... size (in)
3 ... 20x25
3 ... 20x25
3 ... 20x25
Aluminum
evaporator
coil/aluminum
condenser
coil with low heat
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