Keeprite KCC103 Installation Manual
PRODUCT DATA &
INSTALLATION
Bulletin K50-KCC-PDI-10
1064435
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KCC Centrifugal
Fan Air Cooled
Condensers
Air Cooled Models from 103 Thru 164
Four to ninety Ton
• Galvanized steel, angular steel frame cabinet
construction
• Removable access panels
• Galvanized steel fan housings and wheels.
• 12” (305mm) diameter fan wheels keyed to fan
NOMENCLATURE
KCC 1 12 19 4 A D
CENTRIFUGAL F AN
AIR COOLED
CONDENSER
NUMBER OF FANS
1 OR 2
NOMINAL COIL
FACE AREA
FIN SPACING
ROW DEPTH
shaft
• Direct drive fan motors with inherent overload
protection.
• Weather protected motors with top end rain
shields and shaft moisture slingers.
• High efficiency rippled aluminum fin coils
• Adjustable motor bases and drives
CONTENTS
Nomenclature.........................................
Capacity Data.........................................
Fan Data..................................................
Selection Data........................................
Dimensional Data...................................
Installation Instructions.........................
PAGE
Cover
5,6
7,8
2
2
3
FIN THICKNESS
A = .0055
C = .0075
C = .009
FAN MOTOR
AND DRIVE
Design Specifications............................
Service Log.............................................
Project Information................................
9
Back
Back
CAPACITY DATA
TABLE 2
KCC
MODEL NO.
103 1800 18000 27000 36000 45000 54000
104 2730 27300 41000 54600 68300 82000
106 3900 39000 58500 78000 97500 117000
108 5200 52000 78000 104000 130000 156000
111 6930 69300 104000 138600 173300 208000
214 8860 88600 133000 177300 221600 266000
217 10500 105000 157500 210000 262500 315000
222 13030 130300 195500 260600 325800 391000
228 16360 163600 245500 327300 409100 491000
237 21460 214600 321900 429200 536600 643800
141 25200 252000 378000 504000 630000 756000
150 28980 289800 434700 579600 724500 869400
164 36580 365800 548700 731600 914500 1097400
TABLE 2
KCC
MODEL NO.
103 1750 17500 26250 35000 43750 52500
104
106
108
111 6720 67900 100800 134400 168000 201600
214 8590 85900 128850 171800 214750 257700
217
222
228
237 20820 208200 312300 416400 520500 624600
141 24440 244400 366600 488800 611000 733200
150
164
R-22 TOTAL HEAT REJECTION (BTU/HR)
°F. (°C) TEMPERATURE DIFFERENCE = CONDENSING TEMPERATURE MINUS AMBIENT TEMPERATURE
1 (.6) 10 (6) 15 (8) 20 (11) 25 (14) 30 (17)
R-404A TOTAL HEAT REJECTION (BTU/HR)
°F. (°C) TEMPERATURE DIFFERENCE = CONDENSING TEMPERATURE MINUS AMBIENT TEMPERATURE
1 (.6) 10 (6) 15 (8) 20 (11) 25 (14) 30 (17)
2650 26500 39750 53000 66250 79500
3780 37800 56700 75600 94500 113400
5040 50400 75600 100800 126000 151200
10190 101900 152850 203800 254750 305700
12640 126400 189600 252800 316000 379200
15870 158700 238050 317400 396750 476100
28110 281100 421650 562200 702750 843300
35480 354800 532200 709600 887000 1064400
FAN DATA
TABLE 3
STANDARD
MODEL
NOMINAL
NO.
103 2000
104 3150 810 1.16 870 1.25 930 1.37 1007 1.49 1075 1.57 1136 1.66 1195 1.98
106 4500 910 1.76 948 1.89 996 2.06 1045 2.25 1096 2.44 1148 2.65 1202 2.87
108 6000 680 2.00 716 2.15 765 2.42 813 2.71 863 3.02 911 3.33 960 3.66
111 8000
214 10000
217 12000
222 15000
228 19000 505 6.15 533 6.79 573 7.68 613 8.61 653 9.60 691 10.62 729 11.68
237 23000 447 7.22 473 7.88 511 8.97 547 10.10 584 11.27 619 12.47 653 13.70
141 29000 338 10.55 355 11.73 370 13.14 397 14.53 420 15.92 442 17.28 463 18.68
150 34000 285 11.17 301 12.39 326 1.398 350 15.57 372 17.20 393 18.85 413 20.55
164 42000
C.F.M.
6 ROW COIL
ONLY
.55 .75 1.00 1.25 1.50 1.75 2.00
R.P.M. B.H.P. R.P.M. B.H.P. R.P.M. B.H.P. R.P.M. B.H.P. R.P.M. B.H.P. R.P.M. B.H.P. R.P.M. B.H.P.
1077 0.65 1167 0.72 1272 0.81 1371 0.91 1465 1.01 1555 1.12 1644 1.23
658 3.05 691 3.28 727 3.60 767 3.95 808 4.35 850 4.78 894 5.23
800 3.63 842 3.98 900 4.40 956 4.84 1012 5.30 1066 5.77 1120 6.27
706 4.15 744 4.54 795 5.05 846 5.59 897 6.15 948 6.74 998 7.36
655 5.42 689 5.89 734 6.53 780 7.20 825 7.91 869 8.64 913 9.40
263 14.58 279 16.03 300 18.12 321 20.18 340 22.20 363 24.24 376 26.27
TOTAL STATIC PRESSURE (Includes Coil, Ductwork etc.)
- 2 -
SELECTION DATA
The selection of an air cooled condenser is based on the
heat rejection capacity at the condenser rather than net
refrigeration effect at the evaporator because the refrigerant gas absorbs additional energy in the
compressor. This additional energy, the heat of
compression, varies appreciably with the operating
conditions of the system and with compressor design,
whether open or suction cooled hermetic type.
Some compressor manufacturers publish heat rejection
figures as part of their compressor ratings. Since heat
rejection varies with compressor design, it is
recommended that the compressor manufacturer’s data
be used whenever available in selecting an air cooled
condenser.
HEAT REJECTION FACTORS
CONDENSER LOAD = COMPRESSOR CAPACITY X FACTOR
OPEN COMPRESSORS
TABLE NO. 4
EVAPORATOR
TEMP
°F. °C.
-30
-20
-10
10
20
30
40
50
-34
-29
-23
0
-18
-12
-7
-1
4
10
* Outside of normal limits for single stage compressor application.
For two stage application use formulas above.
CONDENSING TEMPERATURE °F. (°C.)
90
(32)
1.37
1.33
1.28
1.24
1.21
1.17
1.14
1.12
1.09
100
(38)
1.42
1.37
1.32
1.28
1.24
1.20
1.17
1.15
1.12
110
(43)
1.47
1.42
1.37
1.32
1.28
1.24
1.20
1.17
1.14
120
(49)
*
1.47
1.42
1.37
1.32
1.28
1.24
1.20
1.17
130
(54)
*
*
1.47
1.41
1.36
1.32
1.27
1.23
1.20
140
(60)
1.47
1.42
1.37
1.32
1.28
1.24
*
*
*
If thecompressor manufacturer does not publish heat
rejection ratings, factors from Table Nos. 4 and 5 may be
used to estimate total heat rejection-THR.
For systems outside the normal limits of single stage
compressor application, (such as compound or cascade
refrigeration systems) the following formulas may be
used to arrive at the heat rejection requirements for
selection of the condenser:
Open Compressors
THR = Compressor Capacity (Btuh) + 2545 x Bhp
Suction Cooled Hermetic Compressors
THR = Compressor Capacity (Btuh) + 3413 x KW
SUCTION COOLED HERMETIC COMPRESSORS
TABLE NO. 5
EVAPORATOR
TEMP
°F. °C. 90 (32)
-30
-20
-10
10
20
30
40
50
-34
-29
-23
0
-18
-12
-7
-1
4
10
* Outside of normal limits for single stage compressor application.
For two stage application use formulas above.
CONDENSING TEMPERATURE °F. (°C.)
1.57
1.49
1.42
1.36
1.31
1.26
1.22
1.18
1.14
100
(38)
1.62
1.53
1.46
1.40
1.34
1.29
1.25
1.21
1.17
110
(43)
1.68
1.58
1.50
1.44
1.38
1.33
1.28
1.24
1.20
120
(49)
*
1.65
1.57
1.50
1.43
1.37
1.32
1.27
1.23
130
(54)
1.64
1.56
1.49
1.43
1.37
1.31
1.26
140
(60)
*
*
*
*
*
1.62
1.55
1.49
1.42
1.35
1.29
SELECTION EXAMPLE
GIVEN:
Compressor Capacity 350,000 Btuh
Evaporator Temperature 40°F.
Refrigerant R-22
Ambient Air 95°F.
Maximum Condensing Temperature 120°F.
Suction Cooled Hermetic Compressor
PROCEDURE:
(1) Assuming the compressor manufacturer’s heat
rerejection data is not available, determine the
heat rejection factors for the specified conditions
from Table No. 5 above (1.27).
(2) Multiply the compressor capacity by the heat
rejection factor to estimate the required
condenser capacity.
(3) Since R-22 is specified, select the proper
condenser from Table No. 1 based on the
specified difference between condensing
refrigerant and the ambient air (T.D.).
SELECTION:
Using the heat rejection factor from Table No. 5 above,
the required condenser capacity is:
1.27 x 350.000 = 444,000 Btuh
From Table No. 1 for the specified T.D. of 25°F the proper
selection is the Model KCC 237 with a capacity of
536,600 Btuh. In this instance the condenser is slightly
oversized and the condenser will balance the
compressor heat rejection at less than the maximum
condensing temperature of 120°F.
- 3 -
MULTIPLE COMPRESSOR APPLICATIONS
Multi-section units are available for applications where
more than one compressor is used either on the same
system or separate systems. Usually, this
arrangement will result in lower installation costs as
opposed to using separate units.
Coils for multi-section condensers are factory circuited
and divided into the proper number of sections, each sized
to meet the specified capacity. Each circuit is supplied
with a hot gas inlet and liquid outlet connection and
tagged for identification. The fan on a multi-section unit
should remain operative as long as a condensing requirement exists in any section of the coil.
TABLE 6 HEAT REJECTION CAPACITY PER FACE TUBE (BTU / HR) - R12
KCC
MODEL NO.
103 12 150 1502 2252 3003 3754 4505
104 14 194 1943 2914 3885 4856 5828
106 16 245 2447 3670 4893 6116 7340
108
111
214 22 402 4022 6032 8043 10054 12065
217 22 477 4767 7151 9534 11918 14301
222
228
237
141 40 630 6300 9450 12600 15750 18900
150 46 630 6300 94.50 12600 15750 18900
164
For R-404A ratings, multiply above capacities by 0.97.
FACE
TUBES
22 236 2363 3544 4725 5906 7088
22 315 3150 4725 6300 7875 9450
26 500 4998 7479 9996 12495 14994
26 630 6300 9450 12600 15750 18900
34 630 6300 9450 12600 15750 18900
58 626 6258 9387 12516 15646 18774
SELECTION EXAMPLE
°F. (°C) TEMPERATURE DIFFERENCE = CONDENSING TEMPERATURE MINUS AMBIENT TEMPERATURE
1 (.6) 10 (6) 15 (8) 20 (11) 25 (14) 30 (17)
GIVEN:
Six hermetic compressors with capacities and
evaporator temperatures (tabulated below).
Refrigerant R-22
Ambient Air Temperature 100°F.
Maximum Condensing Temperature 120°F.
PROCEDURE:
1. Tabulate the compressor capacities, evaporator
temperatures and heat rejection factors for each
compressor. (See Sample Tabulation, below.)
2. Determine the required heat rejection capacity for
each compressor.
3. Total the sectional heat rejection capacities for the
six compressors.
SELECTION:
Based on the total heat rejection capacity for the six
compressors of 186,160 Btuh, it can be seen from
Table No. 1 that the smallest unit which will meet this
requirement is the Model KCC217 with 210,000 Btuh
SAMPLE TABULATION
COMPRESSOR
NO.
1
2
3
4
5
6
COMPRESSOR
CAPACITY (BTUH)
13500
10000
36000
11000
31000
25000
EVAPORATOR
TEMPERATURE
°F. °C.
+20
-15
+15
+20
-10
+20
at 20 °F. T.D. Table No. 6 lists the heat rejection
capacity per “face tube” at various T.D.’s.
At 20 °F. T.D., the KCC 217 has a capacity of 9534 Btuh
per “face tube”. To determine the required number of face
tubes for each section, divide the required sectional
capacity by the capacity per “face tube”. For example,
compressor No. 1 requires 18,000 : 9534 = 2 “face tubes”.
Section No. 1 should be eircuited with 2 “face tubes” for
Compressor No. 1. Following this same procedure will
determine the size of each section for the remaining
compressors.
The sample tabulation shows the results of this selection
and indicates that 22 “face tubes” are required when
using the Model KCC 217. Since the Model KCC 217
has 22 “face tubes” available, the selection has been
satisfied. If the total required number of “face tubes”
exceeds the number of “face tubes” available as listed in
Table No. 6 it will be necessary to permit a slightly higher
condensing temperature than planned for one or two of
the sections. A second alternative would be to select the
next larger size condenser.
REQUIRED
CONDENSER
CAPACITY (BTUH)
18000
17440
51400
15070
50000
_34250_
186160
NUMBER OF
FACE TUBES
-7
-23
-9
-7
-23
-7
HEAT REJECTION
FACTOR
1.37
1.57
1.40
1.37
1.57
1.37
REQUIRED
2
2
6
2
6
_4_
22
- 4 -
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