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—5—
PHYSICAL DATA
†
Required filter sizes shown are based on the larger of the ARI (Air Conditioning & Refrigeration Institute) rated cooling air-
flow or the heating airflow velocity of 300 ft/min for throwaway type or 450 ft/min for high-capacity type. Air filter pressure
drop for non-standard filters must not exceed 0.08 in. wg.
*
Based on altitude of 0 to 2000 ft.
UNIT SIZE 574B 024040 030040 030060 036060 036090 042060 042090
NOMINAL CAPACITY (ton)
2 2-1/2 2-1/2 3 3 3-1/2 3-1/2
OPERATING WEIGHT (lb)
350 388 388
COMPRESSORS
Scroll
Quantity
1
REFRIGERANT (R-410A)
Quantity (lb)
7.3 9.5 9.5
REFRIGERANT METERING DEVICE
Indoor
TXV
CONDENSER COIL
Rows—Fins/in.
Face Area (sq ft)
2/21
11.95
2/21
13.7
2/21
13.7
CONDENSER FAN
Nominal Cfm
Diameter (in.)
Motor Hp (Rpm)
2350
22
1/8 (825)
2350
22
1/8 (825)
2350
22
1/8 (825)
EVAPORATOR COIL
Rows—fins/in.
Face Area (sq ft)
3/15
3.7
4/15
3.7
4/15
3.7
EVAPORATOR BLOWER
Nominal Airflow (Cfm)
Size (in.)
Motor Hp (Rpm)
800
10 x 10
1/2
1150
11 x 10
3/4
1150
11 x 10
3/4
FURNACE SECTION*
Burner Orifice No. (Qty…Drill Size)
Natural
Burner Orifice No. (Qty…Drill Size)
Propane
2…44
2…50
2…38
2…46
3…38
3…46
HIGH-PRESSURE SWITCH (psig)
Cutout
Reset (Auto.)
610 ± 15
420 ± 25
LOSS-OF-CHARGE/LOW-PRESSURE SWITCH
(Liquid Line) (psig)
Cutout
Reset (Auto.)
20 ± 5
45 ± 10
RETURN-AIR FILTERS (in.)†
Throwaway
20 x 24 x 1 20 x 24 x 1 20 x 24 x 1 20 x 24 x 1 20 x 24 x 1 24 x 30 x 1 24 x 30 x 1