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10
Ta ble 1—Physical Data -- Unit 50CR
UNIT SIZE 024 030 036 042 048 060
NOMINAL CAPACITY (ton) 2 2--1/2 3 3-- 1/2 4 5
OPERATING WEIGHT (lb.) 350 350 373 440 463 499
Compressor Scroll
Refrigerant (R--410A) Quantity (lb.) 7.5 8 9.5 10.8 11.5 14.0
REFRIGERANT METERING DEVICE TXV
ORIFICE OD (in.) 0.035 (2) 0.035 (2) 0.038 (2) 0.038 (2)
0.038 (Left OD Coil)
0.046 (Right OD Coil)
0.042 (Left OD Coil)
0.052 (Right OD Coil)
OUTDOORCOIL
Rows…Fins/in. 2…21 2…21 2…21 2…21 2…21 2…21
Face Area (sq. ft.) 12.3 12.3 13.6 15.4 17.2 19.4
OUTDOORFAN
Nominal Cfm 2700 2700 2800 2800 3300 3300
Diameter 22 22 22 22 22 22
Motor HP(RPM) 1/8 (825) 1/8 (825) 1/8(825) 1/8 (825) 1/4 (1100) 1/4 (1100)
INDOOR COIL
Rows…Fins/in. 3…15 3…15 4…15 3…15 4…15 4…17
Face Area (sq. ft.) 3.7 3.7 3.7 4.7 4.7 5.7
INDOOR BLOWER
NominalAirflow (Cfm)
Comfort Variable based on Comfort Roll back (see User Interface instructions for more information).
Efficiency 700 875 1050 1225 1400 1750
Max 800 1000 1200 1400 1600 2000
Size (in.) 10x10 10x10 11x10 11x10 11x10 11x10
Motor HP(RPM) 1/2 1/2 3/4 3/4 3/4 1
HIGH--PRESSURE SWITCH (psig)
650 ± 15
420 ± 25
Cutout
Reset (Auto)
LOSS--OF--CHARGE/LO W--PRESSURE SWITCH
20 ± 5
45 ± 10
(Liquid Line) (psig)
Cutout
Reset (Auto)
Return--Air Filters (in.)*
20x24x1 20x24x1 24x30x1 24x36x1 24x36x1 24x36x1
Throwaway
*Required filter sizesshownarebased on the larger oftheARI (Air Conditioning and Refrigeration Institute) rated cooling airflow or theheating airflowvelocity of 300 ft/minute
for throw away typ e or 450 ft/minutefor high--capacity type.Air filter pressure drop for non-- stan dard filtersmust notexceed0.08in.wg.
USER
INTERFACE
DISCONNECT
PER NEC*
FROM
POWER
SOURCE
RETURN
AIR
TOP COVER
FROM
GAS LINE
*NEC - NATIONAL ELECTRICAL CODE
A06091
Fig. 10 -- Typical Installation
50CR