Table 1 — Physical Data
UNIT 564A AND 764A 024 030 036 042 048 060
OPERATING WEIGHT (lb) 222 236 250 297 310 350
COMPRESSOR TYPE Reciprocating
REFRIGERANT R-22
Charge (lb) 2.8 3.9 4.7 4.4 6.1 7.5
REFRIGERANT METERING DEVICE Acutrol™ System
CONDENSER COIL Copper Tubes, Aluminum Plate Fins
Rows...Fins/in. 1...17 1...17 2...17 1...17 2...17 2...17
Total Face Area (sq ft) 6.7 7.9 6.2 11.1 8.6 10.7
CONDENSER-FAN MOTOR Propeller
Cfm 1600 2000 2000 2600 2600 2800
Nominal Rpm 825 1100 1100 1100 1100 1100
Motor Hp
1
⁄
8
1
⁄
4
1
⁄
4
1
⁄
4
1
⁄
4
1
⁄
4
Diameter (in.) 20 20 20 20 20 20
EVAPORATOR COIL Copper Tubes, Aluminum Plate Fins
Rows...Fins/in. 2...15 3...15 3...15 3...15 3...15 4...15
Total Face Area (sq ft) 2.8 2.8 3.1 3.9 4.3 4.9
EVAPORATOR-FAN MOTOR Direct Drive
Blower Motor Size (in.) 10x8 10x8 10x8 10x9 10x9 10x10
Nominal Cfm 800 1000 1200 1400 1600 2000
Rpm Range 550-1000 550-1000 800-1050 800-1050 1000-1100 950-1100
Number of Speeds 3333 2 3*
Factory Speed Setting Low Med Low Med Low Low
Motor Hp
1
⁄
4
1
⁄
4
1
⁄
2
1
⁄
2
3
⁄
4
1
CONNECTING DUCT SIZES Round Square
Supply Air (in.) 14 13.9 x 13.9
Return Air (in.) 14 13.9 x 27.8
FIELD-SUPPLIED RETURN AIR FILTER†
Throwaway (in.) 24x24 24x24 24x24 24x24 24x30 24x30
*460-v motors are 2-speed only.
†Required 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.
If the installation requires draining the condensate water
away from the unit, install a field-supplied 2-in. trap using
3
⁄
4
-in. OD tubing or piping to ensure proper drainage. See
Fig. 8A and 8B. Make sure that the outlet of the trap is at
least one in. lower than the unit drain pan condensate con-
nection to prevent the pan from overflowing. Connect a drain
tube using a minimum of
3
⁄
4
-in. PVC,
3
⁄
4
-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 inch in every
10 ft of horizontal run. Be sure to check the drain tube for
leaks. Prime trap at the beginning of cooling season start-up.
Allowable glues for condensate trap connection are: Stand-
ard ABS, CPVC, or PVC cement.
B. Field-Duct Connections
NOTE: The design and installation of the duct system must
be in accordance with the standards of NFPA for the instal-
lation of nonresidence-type air conditioning and ventilating
systems, NFPA 90A or residence-type, NFPA 90B, and/or
local codes and ordinances.
Units have duct flanges on the supply- and return-air open-
ings on the side of the unit. See Fig. 2-4 for connection sizes
and locations.
CONDENSATE DRAIN HOLE
Fig. 7 — Condensate Connection Details
Fig. 8A — Condensate Trap (Using Tubing)
Fig. 8B — Condensate Trap (Using PVC Piping)
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