International Comfort Products ENH4X24C17A1, ENH4X24T17A1, ENH4X30C17A1, ENH4X30T17A1, ENH4X31C17A1 User Manual
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TECHNICAL SUPPORT MANUAL
Horizontal Evaporator Coils
ENH4X
Safety Labeling and Signal Words
DANGER, WARNING, CAUTION, and
NOTE
The signal words DANGER, WARNING, CAUTION, and NOTE are used to identify levels of haz-
ard seriousness. The signal word DANGER is only
used on product labels to signify an immediate hazard. The signal words WARNING, CAUTION, and
NOTE will be used on product labels and throughout this manual and other manuals that may apply
to the product.
DANGER − Immediate hazards which will result in
severe personal injury or death.
WARNING − Hazards or unsafe practices which
could result in severe personal injury or death.
CAUTION − Hazards or unsafe practices which
may result in minor personal injury or product or
property damage.
NOTE − Used to highlight suggestions which will
result in enhanced installation, reliability, or operation.
Signal Words in Manuals
The signal word WARNING is used throughout this
manual in the following manner:
!
The signal word CAUTION is used throughout this
manual in the following manner:
!
Signal Words on Product Labeling
Signal words are used in combination with colors
and/or pictures on product labels.
WARNING
WARNING
CAUTION
TABLE OF CONTENTS
Model Number Identification 2.....................
Airflow Tables 3 − 5...............................
Exploded Drawing 6..............................
ENH4X**C Parts List 7............................
ENH4X**T Parts List 8............................
MODELS
ENH4X24C17A1 ENH4X24T17A1
ENH4X30C17A1 ENH4X30T17A1
ENH4X31C17A1 ENH4X31T17A1
ENH4X36C17A1 ENH4X36T17A1
ENH4X42C21A1 ENH4X42T21A1
ENH4X43C21A1 ENH4X43T21A1
ENH4X48C21A1 ENH4X48T21A1
ENH4X60C24A1 ENH4X60T24A1
ENH4X61C24A1 ENH4X61T24A1
!
ELECTRICAL SHOCK HAZARD
Failure to turn off electric power could result in personal injury or death.
Before installing or servicing system, turn off main
power to the system. There may be more than one disconnect switch, including accessory heater(s).
WARNING
484 04 3700 00 Aug. 2010
TECHNICAL SUPPORT MANUAL Horizontal Coils: ENH4X
COIL MODEL NUMBER IDENTIFICATION GUIDE
Digit Position
1 2 3 4 5 6,7 8 9,10 11 12
E N H 4 X 24 C 17 A 1
E = Evaporator
B = Builder
D = Standard
N = N Coil TYPE
A = Uncased
D = Cased Upflow/Downflow
M = Cased Multiposition (Upflow/Downflow/Horizontal)
W = Cased Upflow/Downflow for narrower furnaces
H = Cased Horizontal INSTALLATION
4 = Environmentally Sound R−410A REFRIGERANT
P = Piston
X = TXV
18 = 18,000 BTUH = 1½ tons
19 = 18,000 BTUH = 1½ tons
24 = 24,000 BTUH = 2 tons
30 = 30,000 BTUH = 2½ tons
31 = 30,000 BTUH = 2½ tons
36 = 36,000 BTUH = 3 tons
37 = 36,000 BTUH = 3 tons
42 = 42,000 BTUH = 3½ tons
43 = 42,000 BTUH = 3½ tons
48 = 48,000 BTUH = 4 tons
60 = 60,000 BTUH = 5 tons
61 = 60,000 BTUH = 5 tons NOMINAL CAPACITY
C = Plain Copper
T = Tin Coated Copper HAIRPIN MATERIAL
14 = 14−3/16”
17 = 17−1/2”
21 = 21”
24 = 24−1/2” WIDTH
Sales Digit (Major Revision)
Engineering Digit (Minor Revision)
METERING DEVICE
2 484 04 3700 00
TECHNICAL SUPPORT MANUAL Horizontal Coils: ENH4X
COOLING CAPACITIES (MBH)
INDOOR COIL
UNIT
SIZE
24
30
31
36
42
43
AIR
CFM EWB TC SHC BF TC SHC BF TC SHC BF TC SHC BF TC SHC BF
72 (22) 39.00 19.00 0.00 36.00 17.50 0.00 32.70 15.90 0.00 28.80 14.10 0.00 24.60 12.30 0.01
600
67 (19) 32.80 19.80 0.01 29.80 18.20 0.01 26.30 16.40 0.01 22.40 14.60 0.02 18.10 12.60 0.02
62 (17) 27.20 20.50 0.02 24.00 18.70 0.02 20.50 16.90 0.02 16.60 15.00 0.02 13.10 13.10 0.05
72 (22) 47.10 22.80 0.00 43.60 21.10 0.00 39.60 19.30 0.00 35.00 17.30 0.02 29.90 15.10 0.02
800
67 (19) 39.80 24.20 0.03 36.10 22.30 0.03 32.00 20.30 0.03 27.30 18.10 0.03 22.00 15.90 0.03
62 (17) 33.10 25.40 0.03 29.30 23.40 0.03 25.10 21.20 0.03 20.50 19.00 0.04 16.70 16.70 0.09
72 (22) 53.40 25.90 0.00 49.50 24.20 0.00 45.10 22.10 0.02 40.00 19.90 0.03 34.10 17.50 0.04
1000
67 (19) 45.30 27.90 0.05 41.20 25.90 0.05 36.60 23.70 0.05 31.30 21.30 0.05 25.20 18.70 0.05
62 (17) 37.80 29.60 0.05 33.60 27.40 0.05 28.80 25.10 0.05 23.80 22.70 0.06 20.00 20.00 0.13
72 (22) 48.00 23.50 0.00 44.00 21.40 0.00 39.70 19.20 0.00 34.80 17.00 0.00 29.40 14.60 0.01
750
67 (19) 40.30 24.20 0.01 36.20 22.00 0.02 31.80 19.70 0.02 26.80 17.40 0.02 21.40 15.00 0.02
62 (17) 33.20 24.80 0.02 29.10 22.50 0.02 24.60 20.20 0.02 19.90 17.90 0.02 15.60 15.60 0.05
72 (22) 58.70 28.50 0.00 53.90 26.10 0.00 48.50 23.60 0.00 42.50 20.90 0.02 35.80 18.10 0.03
1000
67 (19) 49.40 29.90 0.03 44.40 27.30 0.03 38.90 24.60 0.04 32.90 21.70 0.04 26.20 18.80 0.04
62 (17) 40.80 30.90 0.04 35.80 28.20 0.04 30.30 25.40 0.04 24.60 22.60 0.05 19.90 19.90 0.10
72 (22) 67.40 32.70 0.00 61.90 30.10 0.00 55.70 27.30 0.02 48.80 24.20 0.04 41.10 21.00 0.05
1250
67 (19) 56.80 34.70 0.05 51.20 31.80 0.06 44.90 28.70 0.06 37.80 25.50 0.06 30.10 22.20 0.06
62 (17) 47.10 36.30 0.06 41.30 33.20 0.06 35.00 30.10 0.06 28.60 27.00 0.07 23.70 23.70 0.14
72 (22)
750
67 (19)
62 (17)
72 (22)
1000
67 (19)
62 (17)
72 (22)
1250
67 (19)
62 (17)
72 (22) 58.10 28.30 0.00 53.40 25.90 0.00 48.00 23.30 0.00 42.10 20.60 0.01 35.50 17.80 0.02
900
67 (19) 48.90 29.50 0.02 44.00 26.90 0.03 38.50 24.20 0.03 32.50 21.30 0.03 25.90 18.40 0.03
62 (17) 40.40 30.40 0.03 35.40 27.70 0.03 29.90 24.90 0.03 24.20 22.10 0.04 19.40 19.40 0.08
72 (22) 70.00 33.90 0.00 64.30 31.20 0.00 57.80 28.30 0.02 50.70 25.10 0.04 42.70 21.80 0.05
1200
67 (19) 58.90 35.90 0.05 53.10 32.90 0.05 46.50 29.70 0.05 39.30 26.40 0.06 31.20 22.90 0.06
62 (17) 48.80 37.50 0.06 42.80 34.30 0.06 36.30 31.00 0.06 29.60 27.80 0.06 24.40 24.40 0.13
72 (22) 79.30 38.60 0.00 72.90 35.60 0.02 65.70 32.30 0.05 57.50 28.80 0.06 48.50 25.10 0.07
1500
67 (19) 67.00 41.30 0.08 60.40 38.00 0.08 53.00 34.40 0.08 44.70 30.70 0.08 35.50 26.80 0.09
62 (17) 55.70 43.60 0.09 48.80 40.00 0.09 41.60 36.50 0.09 34.20 32.90 0.10 28.80 28.80 0.18
72 (22) 74.40 36.30 0.00 68.10 33.10 0.00 61.20 29.70 0.00 53.50 26.20 0.01 45.00 22.60 0.02
67 (19) 62.30 37.60 0.02 56.00 34.20 0.03 48.90 30.60 0.03 41.20 27.00 0.03 32.80 23.30 0.03
1050
62 (17) 51.40 38.60 0.03 44.90 35.00 0.03 37.90 31.40 0.03 30.60 27.80 0.04 24.40 24.40 0.08
72 (22) 90.20 43.80 0.00 82.60 40.10 0.00 74.10 36.20 0.01 64.70 32.00 0.04 54.40 27.60 0.05
67 (19) 75.80 46.00 0.05 68.00 42.00 0.05 59.40 37.70 0.06 50.00 33.40 0.06 39.60 28.90 0.06
1400
62 (17) 62.60 47.70 0.06 54.70 43.50 0.06 46.20 39.20 0.06 37.50 35.00 0.07 30.70 30.70 0.13
72 (22) 103.00 50.00 0.00 94.30 46.00 0.00 84.60 41.50 0.05 73.90 36.80 0.06 62.00 32.00 0.07
67 (19) 86.70 53.10 0.08 77.80 48.60 0.08 68.00 43.90 0.08 57.10 39.00 0.08 45.20 33.90 0.09
1750
62 (17) 71.70 55.70 0.09 62.70 50.90 0.09 53.10 46.20 0.09 43.40 41.50 0.10 36.30 36.30 0.18
72 (22) 96.72 47.64 0.00 89.31 43.85 0.00 80.91 39.78 0.00 71.39 35.44 0.00 60.74 30.89 0.01
67 (19) 80.93 49.26 0.01 73.30 45.20 0.01 64.67 40.88 0.01 54.97 36.34 0.01 43.99 31.53 0.01
1050
62 (17) 66.64 50.56 0.01 58.77 46.28 0.01 50.10 41.84 0.01 40.70 37.29 0.02 32.63 32.63 0.07
72 (22) 117.07 57.30 0.00 108.20 53.03 0.00 98.03 48.31 0.01 86.74 43.33 0.02 73.81 37.96 0.02
67 (19) 98.18 60.23 0.03 89.03 55.55 0.03 78.69 50.55 0.03 66.93 45.19 0.03 53.54 39.46 0.03
1400
62 (17) 81.03 62.70 0.03 71.60 57.72 0.03 61.25 52.56 0.03 50.15 47.21 0.03 41.46 41.46 0.11
72 (22) 133.38 65.28 0.00 123.30 60.58 0.02 111.98 55.48 0.03 99.21 50.01 0.04 84.49 44.04 0.04
67 (19) 112.09 69.50 0.04 101.79 64.41 0.05 90.14 58.95 0.05 76.76 52.99 0.05 61.46 46.55 0.05
1750
62 (17) 92.72 73.26 0.05 82.16 67.85 0.05 70.58 62.18 0.05 58.38 56.24 0.06 49.33 49.33 0.15
30 (−1) 35 (2) 40 (4) 45 (7) 50 (10)
74.50 37.07 0.00 68.51 33.85 0.00 61.86 30.50 0.00 54.41 27.00 0.00 46.04 23.35 0.00
62.13 37.73 0.01 56.03 34.37 0.01 49.24 30.87 0.01 41.66 27.24 0.01 32.96 23.39 0.01
50.98 38.20 0.01 44.75 34.72 0.01 37.95 31.17 0.01 30.17 27.36 0.01 23.70 23.70 0.06
92.35 45.51 0.00 85.01 41.76 0.00 76.78 37.78 0.00 67.46 33.54 0.01 57.03 29.08 0.01
77.15 46.96 0.02 69.62 42.94 0.02 61.18 38.71 0.02 51.69 34.27 0.02 41.04 29.62 0.02
63.39 48.06 0.02 55.66 43.85 0.02 47.21 39.53 0.02 38.21 35.15 0.02 30.59 30.59 0.08
107.37 52.63 0.00 98.97 48.52 0.00 89.37 44.04 0.01 78.59 39.23 0.02 66.39 34.13 0.02
89.89 54.97 0.03 81.19 50.47 0.03 71.37 45.67 0.03 60.28 40.57 0.03 47.77 35.20 0.03
73.97 56.83 0.03 64.99 52.05 0.03 55.22 47.14 0.03 44.93 42.16 0.04 36.94 36.94 0.11
Legend:
CFM − Cubic Ft. per Minute EWB − Entering Wet Bulb LWB − Leaving Wet Bulb TC − Gross Cooling Capacity 1000 Btuh
SHC − Gross Sensible Capacity 1000 Btuh BF − Bypass Factor MBH − 1000 Btuh
See notes following.
SATURATED TEMPERATURE LEAVING EVAPORATOR _F (_C)
— Continued on next page —
484 04 3700 00 3
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