Page 1
KCM-Line
09/09/09
Air Cooled
PRODUCT DATA &
INSTALLATION
Bulletin K50-KCM-PDI-2
1087820
For 50Hz see Bulletin K50-KCM-PDI-50
We are on the Internet
www.keepriterefrigeration.com
Condensers
Refrigerant: R404A, R507, R22, R407C
Electrical Power:
208-230/1/60, 208-230/3/60,
460/1/60, 460/3/60, 575/1/60, 575/3/60
CONTENTS
Page
Nomenclature..................................................................................................................... 2
Features & Options............................................................................................................ 2
Capacity Data.................................................................................................................... 3 - 4
Electrical Data.................................................................................................................... 5
General Specifications........................................................................................................ 6 - 7
Dimensional Data............................................................................................................... 8 - 11
Wiring Diagrams................................................................................................................. 12 - 16
Condenser Theory.............................................................................................................. 17
Receivers Selection............................................................................................................ 18 - 19
Glossary of Terms............................................................................................................... 20 - 21
Condenser Selection.......................................................................................................... 22 - 24
Low Ambient Operation...................................................................................................... 25 - 28
Installation.......................................................................................................................... 29 - 32
EC Motor Application.......................................................................................................... 33 - 37
EC Motor Wiring Diagrams................................................................................................. 38 - 39
Generic Service Parts......................................................................................................... 40
Warranty.............................................................................................................................. 43
Project Information.............................................................................................................. 43
“As Built” Service Parts List............................................................................................... BACK
Page 2
Brand Name:
K50-KCM-PDI-2
09/09/09
K = KeepRite
Product name
CM = Medium Sized Condenser
NOMENCLATURE
K CM 095 - T3 A - A 2 4 V
Application
V = Vertical Air Discharge
H = Horizontal Air Discharge
Nominal Tons (R404A, 25°F TD, 60Hz)
Voltage
S2 = 208-230/1/60
T3 = 208-230/3/60
S4 = 460/1/60
T4 = 460/3/60
S5 = 575/1/60
T5 = 575/3/60
S6 = 200-220/1/50
T7 = 200-220/3/50
S7 = 380-400/1/50
T9 = 380-400/3/50
STANDARD FEATURES INCLUDE
• Horizontal or Vertical Air Discharge
• Heavy Gauge Galvanized Steel Cabinet
• ThermoSpanTM Coil Design eliminates tube
failures on tube sheet
• Internally Enhanced Tubing with Enhanced Fin
optimizes coil performance
• Energy Efcient PSC and 3 Phase Fan Motors
with Internal Overload Protection
Fans Deep
Fans Wide
1 = Inline; 2 = Double Wide
Motor
A = 1075 RPM, 3/4 HP Motor
E = ECM Motor
Design version
• Quiet ‘Swept Wing’ Fan Blade
• Fan Sections Individually Bafed with
Clean-out Panels
• Zinc Plated Huck Bolts
• Heavy Duty 24” Legs
• Double fan wide models have Two Equal
Circuits
• Control Circuit Voltage – 230 V
• Unit shipped with Nitrogen Holding Charge
• Multiple Refrigeration Circuits
• Ambient or Pressure Fan Cycling Control with
Contactor
• Johnson P66 Variable Fan Speed Control
• Efcient Variable Speed EC Motors
• Individual Fan Motor Fusing
• Non-Fused Disconnect
• Receiver with or without Heater and Insulation
OPTIONAL FEATURES
• Adjustable Flooded Head Pressure Control
(factory mounted if ordered with receiver option)
• Optional Fin Materials and Coatings
• Voltages Available for 60Hz or 50Hz
• Extended 48” Leg Kit with Cross Bracing
• Horizontal Conguration
• Optional Fin Materials
• Optional Coil Coatings
- 2 -
Page 3
CAPACITY DATA - SINGLE ROW
K50-KCM-PDI-2
09/09/09
KCM 60Hz
TOTAL HEAT OF REJECTION MBH (KW)
MODEL
NUMBER
KCM009 10 1 x 1
KCM010 12 1 x 1
KCM011 10 1 x 1
KCM012 12 1 x 1
KCM013 8 1 x 2
KCM014 10 1 x 2
KCM016 12 1 x 2
KCM017 8 1 x 2
KCM018 10 1 x 2
KCM020 12 1 x 2
KCM021 8 1 x 2
KCM022 10 1 x 2
KCM024 12 1 x 2
KCM025 8 1 x 3
KCM028 10 1 x 3
KCM030 12 1 x 3
KCM032 8 1 x 3
KCM033 10 1 x 3
KCM035 12 1 x 3
KCM037 8 1 x 4
KCM039 10 1 x 4
KCM041 12 1 x 4
KCM043 8 1 x 4
KCM045 10 1 x 4
KCM048 12 1 x 4
FPI
FAN
CONFIG.
TEMPERATURE DIFFERENCE (TD)
R404A / R507
1 °F 10 °F 15 °F 20 °F 30 °F
(0.56 °C) (5.56 °C) (8.3 °C) (11.1 °C) (13.89 °C)
SINGLE ROW MODELS
4.400 44.00 66.00 88.00 132.0
(1.289) (12.89) (19.34) (25.79) (38.68)
4.766 47.66 71.49 95.31 143.0
(1.397) (13.97) (20.95) (27.93) (41.90)
5.300 53.00 79.50 106.0 159.0
(1.553) (15.53) (23.30) (31.06) (46.60)
5.696 56.96 85.44 113.9 170.9
(1.669) (16.69) (25.04) (33.39) (50.08)
6.216 62.16 93.24 124.3 186.5
(1.822) (18.22) (27.33) (36.43) (54.65)
6.911 69.11 103.67 138.2 207.3
(2.025) (20.25) (30.38) (40.51) (60.76)
7.649 76.49 114.7 153.0 229.5
(2.242) (22.42) (33.62) (44.83) (67.25)
8.197 81.97 123.0 163.9 245.9
(2.402) (24.02) (36.03) (48.05) (72.07)
8.800 88.00 132.0 176.0 264.0
(2.579) (25.79) (38.68) (51.58) (77.37)
9.446 94.46 141.7 188.9 283.4
(2.768) (27.68) (41.53) (55.37) (83.05)
10.21 102.08 153.1 204.2 306.2
(2.992) (29.92) (44.88) (59.83) (89.75)
10.60 106.00 159.0 212.0 318.0
(3.106) (31.06) (46.60) (62.13) (93.19)
11.34 113.4 170.1 226.8 340.3
(3.324) (33.24) (49.86) (66.48) (99.72)
12.19 121.9 182.8 243.7 365.6
(3.571) (35.71) (53.57) (71.43) (107.1)
13.34 133.4 200.1 266.8 400.2
(3.910) (39.10) (58.64) (78.19) (117.3)
14.30 143.0 214.5 285.9 428.9
(4.190) (41.90) (62.85) (83.80) (125.7)
15.12 151.2 226.8 302.5 453.7
(4.432) (44.32) (66.48) (88.64) (133.0)
15.84 158.4 237.6 316.9 475.3
(4.643) (46.43) (69.65) (92.86) (139.3)
16.80 168.0 252.0 336.1 504.1
(4.924) (49.24) (73.87) (98.49) (147.7)
17.54 175.4 263.2 350.9 526.3
(5.142) (51.42) (77.12) (102.8) (154.2)
18.68 186.8 280.1 373.5 560.3
(5.473) (54.73) (82.10) (109.5) (164.2)
19.69 196.9 295.4 393.8 590.7
(5.771) (57.71) (86.56) (115.4) (173.1)
20.60 206.0 309.0 411.9 617.9
(6.036) (60.36) (90.54) (120.7) (181.1)
21.78 217.8 326.7 435.5 653.3
(6.382) (63.82) (95.73) (127.6) (191.5)
22.89 228.9 343.3 457.7 686.6
(6.707) (67.07) (100.6) (134.1) (201.2)
MAX. NO. OF
FEEDS
8 0.5500
8 0.5957
8 0.6625
8 0.7120
10 0.6216
10 0.6911
10 0.7649
16 0.5123
16 0.5500
16 0.5904
16 0.6380
16 0.6625
16 0.7089
24 0.5077
24 0.5558
24 0.5957
21 0.7201
21 0.7544
21 0.8001
24 0.7310
24 0.7781
24 0.8204
32 0.6437
32 0.6805
32 0.7152
MBH @
1 °F TD
PER FEED
Correction Factors for Other Refrigerants - Use R404A Values Multiplied By
NOTES:
(1) Above capacity data based on 0oF subcooling and at sea level.
(2) TD = Condensing temperature - ambient temperature.
(3) For High Altitude applications apply the following correction factors: 0.94 for 2000 feet,
0.88 for 4000 feet and 0.81 for 6000 feet.
(4) For 50 HZ capacity multiply by 0.92.
R22 R-134a R-507 R502 R407C
1.02 0.97 1.00 1.00 1.00
- 3 -
Page 4
CAPACITY DATA - DOUBLE ROW
K50-KCM-PDI-2
09/09/09
KCM 60Hz
TOTAL HEAT OF REJECTION MBH (KW)
MODEL
NUMBER
KCM034 8 2 x 2
KCM036 10 2 x 2
KCM040 12 2 x 2
KCM042 8 2 x 2
KCM044 10 2 x 2
KCM047 12 2 x 2
KCM051 8 2 x 3
KCM056 10 2 x 3
KCM060 12 2 x 3
KCM063 8 2 x 3
KCM066 10 2 x 3
KCM070 12 2 x 3
KCM073 8 2 x 4
KCM078 10 2 x 4
KCM082 12 2 x 4
KCM086 8 2 x 4
KCM090 10 2 x 4
KCM095 12 2 x 4
FPI
FAN
CONFIG.
TEMPERATURE DIFFERENCE (TD)
R404A / R507
1 °F 10 °F 15 °F 20 °F 30 °F
(0.56 °C) (5.56 °C) (8.3 °C) (11.1 °C) (13.89 °C)
DOUBLE ROW MODELS
16.39
(4.805) (48.05) (72.07) (96.09) (144.1)
17.60
(5.158) (51.58) (77.37) (103.2) (154.7)
18.89
(5.537) (55.37) (83.05) (110.7) (166.1)
20.42
(5.983) (59.83) (89.75) (119.7) (179.5)
21.20
(6.213) (62.13) (93.19) (124.3) (186.4)
22.68
(6.648) (66.48) (99.72) (133.0) (199.4)
24.37
(7.143) (71.43) (107.1) (142.9) (214.3)
26.68
(7.819) (78.19) (117.3) (156.4) (234.6)
28.59
(8.380) (83.80) (125.7) (167.6) (251.4)
30.25
(8.864) (88.64) (133.0) (177.3) (265.9)
31.69
(9.286) (92.86) (139.3) (185.7) (278.6)
33.61
(9.849) (98.49) (147.7) (197.0) (295.5)
35.09
(10.28) (102.8) (154.2) (205.7) (308.5)
37.35
(10.95) (109.5) (164.2) (218.9) (328.4)
39.38
(11.54) (115.4) (173.1) (230.8) (346.2)
41.19
(12.07) (120.7) (181.1) (241.5) (362.2)
43.55
(12.76) (127.6) (191.5) (255.3) (382.9)
45.77
(13.41) (134.1) (201.2) (268.3) (402.4)
163.9 245.9 327.9 491.8
176.0 264.0 352.0 528.0
188.9 283.4 377.9 566.8
204.2 306.2 408.3 612.5
212.0 318.0 424.0 636.0
226.8 340.3 453.7 680.5
243.7 365.6 487.4 731.1
266.8 400.2 533.6 800.4
285.9 428.9 571.9 857.8
302.5 453.7 604.9 907.4
316.9 475.3 633.7 950.6
336.1 504.1 672.1 1008.2
350.9 526.3 701.8 1052.6
373.5 560.3 747.0 1120.5
393.8 590.7 787.6 1181.4
411.9 617.9 823.9 1235.8
435.5 653.3 871.1 1306.6
457.7 686.6 915.4 1373.1
MAX. NO. OF
FEEDS
32 0.5123
32 0.5500
32 0.5904
32 0.6380
32 0.6625
32 0.7089
48 0.5077
48 0.5558
48 0.5957
42 0.7201
42 0.7544
42 0.8001
48 0.7310
48 0.7781
48 0.8204
64 0.6437
64 0.6805
64 0.7152
MBH @
1 °F TD
PER FEED
Correction Factors for Other Refrigerants - Use R404A Values Multiplied By
NOTES:
(1) Above capacity data based on 0oF subcooling and at sea level.
(2) TD = Condensing temperature - ambient temperature.
(3) For High Altitude applications apply the following correction factors: 0.94 for 2000 feet,
0.88 for 4000 feet and 0.81 for 6000 feet.
(4) For 50 HZ capacity multiply by 0.92.
R22 R-134a R-507 R502 R407C
1.02 0.97 1.00 1.00 1.00
- 4 -
Page 5
ELECTRICAL DATA
K50-KCM-PDI-2
09/09/09
KCM 60Hz
PSC MOTOR - SINGLE PHASE
# FANS
1 3.6 4.5 15 1.7 2.1 15 1.4 1.8 15
2 7.2 8.1 15 3.4 3.8 15 2.8 3.2 15
3 10.8 15.1 20 5.1 5.5 15 4.2 4.6 15
4 14.4 15.3 20 6.8 7.2 15 5.6 6.0 15
6 21.6 25.1 30 10.2 10.6 15 8.4 8.8 15
8 28.8 30.1 35 13.6 15.1 20 11.2 11.6 15
FLA MCA MOP FLA MCA MOP FLA MCA MOP
208-230/1/60 460/1/60 575/1/60
STANDARD MOTOR - THREE PHASE
# FANS
1 2.3 2.9 15 1.2 1.4 15 0.9 1.1 15
2 4.6 5.2 15 2.3 2.6 15 1.8 2.0 15
3 6.9 7.5 15 3.5 3.7 15 2.7 2.9 15
4 9.2 9.8 15 4.6 4.9 15 3.6 3.8 15
6 13.8 14.4 20 6.9 7.2 15 5.4 5.6 15
8 18.4 20.1 25 9.2 9.5 15 7.2 7.4 15
FLA MCA MOP FLA MCA MOP FLA MCA MOP
208-230/3/60 460/3/60 575/3/60
EC MOTOR - THREE PHASE
# FANS
FLA MCA MOP FLA MCA MOP
1 1.8 2.3 15 1.0 1.3 15
2 3.6 4.1 15 2.0 2.3 15
3 5.4 5.9 15 3.0 3.3 15
4 7.2 7.7 15 4.0 4.3 15
6 10.8 11.3 15 6.0 6.3 15
8 14.4 15.1 20 8.0 8.3 15
208-230/3/60 460/3/60
M.C.A. = Minimum Circuit Ampacity
M.O.P. = Maximum OverCurrent protection
- 5 -
Page 6
GENERAL SPECIFICATIONS -
K50-KCM-PDI-2
09/09/09
KCM 60Hz
SINGLE ROW MODELS
MODEL
NUMBER
KCM009 1
KCM010 1
KCM011 1
KCM012 1
KCM013 2
KCM014 2
KCM016 2
KCM017 2
KCM018 2
KCM020 2
KCM021 2
KCM022 2
KCM024 2
KCM025 3
KCM028 3
KCM030 3
KCM032 3
KCM033 3
KCM035 3
KCM037 4
KCM039 4
KCM041 4
KCM043 4
KCM045 4
KCM048 4
FANS
LONG
R404A REFRIGER-
ANT CHARGE(1)
NORMAL
(2)
LBS
(Kg)
3.7
(1.66)14(6.40)
3.7
(1.66)14(6.40)
4.5
(2.06)18(8.20)
4.5
(2.06)18(8.20)
5.2
(2.35)19(8.72)
5.2
(2.35)19(8.72)
5.2
(2.35)19(8.72)
7.1
(3.22)28(12.69)
7.1
(3.22)28(12.69)
7.1
(3.22)28(12.69)
8.8
(4.02)36(16.30)
8.8
(4.02)36(16.30)
8.8
(4.02)36(16.30)
10.8
(4.90)42(19.30)
10.8
(4.90)42(19.30)
10.8
(4.90)42(19.30)
13.4
(6.09)54(24.71)
13.4
(6.09)54(24.71)
13.4
(6.09)54(24.71)
14.7
(6.70)58(26.21)
14.7
(6.70)58(26.21)
14.7
(6.70)58(26.21)
18.2
(8.28)74(33.43)
18.2
(8.28)74(33.43)
18.2
(8.28)74(33.43)
90%
FULL(3)
LBS
(Kg)
AIR FLOW
RATES
CFM
m3/h
6870
(11672)
6640
(11281)
6620
(11247)
6400
(10874)
14800
(25145)
14400
(24466)
13900
(23616)
14200
(24126)
13700
(23276)
13300
(22597)
13700
(23276)
13200
(22427)
12800
(21747)
21300
(36189)
20600
(35000)
19900
(33810)
20500
(34830)
19900
(33810)
19200
(32621)
28400
(48252)
27500
(46723)
26600
(45194)
27400
(46553)
26500
(45024)
25600
(43495)
SOUND
LEVEL
(5)
dBA
51
51
51
51
53
53
53
53
53
53
53
53
53
54
54
54
54
54
54
55
55
55
55
55
55
PIPING CONNECTIONS
16°F to 30°F DESIGN TD 10°F to 15°F DESIGN TD
INLET OUTLET
INCHES
(mm)
1 1/8
(29)
1 1/8
(29)
1 1/8
(29)
1 1/8
(29)
1 3/8
(35)
1 3/8
(35)
1 3/8
(35)
1 5/8
(41)
1 5/8
(41)
1 5/8
(41)
1 5/8
(41)
1 5/8
(41)
1 5/8
(41)
2 1/8
(54)
2 1/8
(54)
2 1/8
(54)
2 1/8
(54)
2 1/8
(54)
2 1/8
(54)
2 5/8
(67)
2 5/8
(67)
2 5/8
(67)
2 5/8
(67)
2 5/8
(67)
2 5/8
(67)
INCHES
(mm)
7/8
(22)
7/8
(22)
7/8
(22)
7/8
(22)
1 1/8
(29)
1 1/8
(29)
1 1/8
(29)
1 1/8
(29)
1 1/8
(29)
1 1/8
(29)
1 1/8
(29)
1 1/8
(29)
1 1/8
(29)
1 3/8
(35)
1 3/8
(35)
1 3/8
(35)
1 3/8
(35)
1 3/8
(35)
1 3/8
(35)
1 5/8
(41)
1 5/8
(41)
1 5/8
(41)
1 5/8
(41)
1 5/8
(41)
1 5/8
(41)
QTY
IN LET OUTLET
INCHES
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
(mm)
1 1/8
(29)
1 1/8
(29)
1 1/8
(29)
1 1/8
(29)
1 1/8
(29)
1 1/8
(29)
1 1/8
(29)
1 3/8
(35)
1 3/8
(35)
1 3/8
(35)
1 3/8
(35)
1 3/8
(35)
1 3/8
(35)
1 3/8
(35)
1 3/8
(35)
1 3/8
(35)
1 5/8
(41)
1 5/8
(41)
1 5/8
(41)
2 1/8
(54)
2 1/8
(54)
2 1/8
(54)
2 1/8
(54)
2 1/8
(54)
2 1/8
(54)
INCHES
(mm)
7/8
(22)
7/8
(22)
7/8
(22)
7/8
(22)
7/8
(22)
7/8
(22)
7/8
(22)
1 1/8
(29)
1 1/8
(29)
1 1/8
(29)
1 1/8
(29)
1 1/8
(29)
1 1/8
(29)
1 1/8
(29)
1 1/8
(29)
1 1/8
(29)
1 1/8
(29)
1 1/8
(29)
1 1/8
(29)
1 3/8
(35)
1 3/8
(35)
1 3/8
(35)
1 3/8
(35)
1 3/8
(35)
1 3/8
(35)
QTY
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
APPROX.
SHIPPING
WEIGHTS
LBS
(Kg)
245
(111)
250
(114)
265
(120)
270
(123)
410
(186)
415
(189)
420
(191)
450
(205)
455
(207)
460
(209)
480
(218)
490
(223)
500
(227)
630
(286)
640
(291)
650
(295)
680
(309)
695
(316)
710
(323)
810
(368)
825
(375)
840
(382)
880
(400)
900
(409)
920
(418)
(1) Correction Factors for Other Refrigerants - Use R404A Values Multiplied By
(2) NORMAL CHARGE IS THE REFRIGERANT CHARGE FOR WARM AMBIENT OR SUMMER OPERATION.
(3) 90% FULL IS THE LIQUID REFRIGERANT WEIGHT AT 90% OF INTERNAL VOLUME AND IS FOR REFERENCE ONLY.
R22 R-134a R-507 R407C
1.14 1.11 1.00 1.11
- 6 -
Page 7
GENERAL SPECIFICATIONS -
K50-KCM-PDI-2
09/09/09
KCM 60Hz
DOUBLE ROW MODELS
MODEL
NUMBER
KCM034 2
KCM036 2
KCM040 2
KCM042 2
KCM044 2
KCM047 2
KCM051 3
KCM056 3
KCM060 3
KCM063 3
KCM066 3
KCM070 3
KCM073 4
KCM078 4
KCM082 4
KCM086 4
KCM090 4
KCM095 4
FANS
LONG
R404A REFRIGER-
ANT CHARGE(1)
NORMAL
(2)
LBS
(Kg)
14.2
(6.45)56(25.39)
14.2
(6.45)56(25.39)
14.2
(6.45)56(25.39)
17.7
(8.03)72(32.61)
17.7
(8.03)72(32.61)
17.7
(8.03)72(32.61)
21.6
(9.80)85(38.59)
21.6
(9.80)85(38.59)
21.6
(9.80)85(38.59)
26.8
(12.18)
26.8
(12.18)
26.8
(12.18)
29.5
(13.39)
29.5
(13.39)
29.5
(13.39)
36.4
(16.57)
36.4
(16.57)
36.4
(16.57)
90%
FULL(3)
LBS
(Kg)
109
(49.43)
109
(49.43)
109
(49.43)
115
(52.42)
115
(52.42)
115
(52.42)
147
(66.86)
147
(66.86)
147
(66.86)
AIR FLOW
RATES
CFM
m3/h
28400
(48252)
27500
(46723)
26600
(45194)
27400
(46553)
26500
(45024)
25600
(43495)
42600
(72378)
41200
(69999)
39800
(67621)
41100
(69829)
39700
(67451)
38400
(65242)
56800
(96504)
55000
(93446)
53100
(90217)
54800
(93106)
53000
(90048)
51200
(86989)
SOUND
LEVEL(5)
dBA
55
55
55
55
55
5
57
57
57
57
57
57
58
58
58
58
58
58
PIPING CONNECTIONS
16°F to 30°F DESIGN TD 10°F to 15°F DESIGN TD
INLET OUTLET
INCHES
(mm)
1 5/8
(41)
1 5/8
(41)
1 5/8
(41)
1 5/8
(41)
1 5/8
(41)
1 5/8
(41)
2 1/8
(54)
2 1/8
(54)
2 1/8
(54)
2 1/8
(54)
2 1/8
(54)
2 1/8
(54)
2 5/8
(67)
2 5/8
(67)
2 5/8
(67)
2 5/8
(67)
2 5/8
(67)
2 5/8
(67)
INCHES
(mm)
1 1/8
(29)
1 1/8
(29)
1 1/8
(29)
1 1/8
(29)
1 1/8
(29)
1 1/8
(29)
1 3/8
(35)
1 3/8
(35)
1 3/8
(35)
1 3/8
(35)
1 3/8
(35)
1 3/8
(35)
1 5/8
(41)
1 5/8
(41)
1 5/8
(41)
1 5/8
(41)
1 5/8
(41)
1 5/8
(41)
QTY
IN LET OUTLET
INCHES
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
(mm)
1 3/8
(35)
1 3/8
(35)
1 3/8
(35)
1 3/8
(35)
1 3/8
(35)
1 3/8
(35)
1 3/8
(35)
1 3/8
(35)
1 3/8
(35)
1 5/8
(41)
1 5/8
(41)
1 5/8
(41)
2 1/8
(54)
2 1/8
(54)
2 1/8
(54)
2 1/8
(54)
2 1/8
(54)
2 1/8
(54)
INCHES
(mm)
1 1/8
(29)
1 1/8
(29)
1 1/8
(29)
1 1/8
(29)
1 1/8
(29)
1 1/8
(29)
1 1/8
(29)
1 1/8
(29)
1 1/8
(29)
1 1/8
(29)
1 1/8
(29)
1 1/8
(29)
1 3/8
(35)
1 3/8
(35)
1 3/8
(35)
1 3/8
(35)
1 3/8
(35)
1 3/8
(35)
QTY
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
APPROX.
SHIPPING
WEIGHTS
LBS
(Kg)
830
(377)
845
(384)
860
(391)
900
(409)
920
(418)
940
(427)
1190
(541)
1210
(550)
1230
(559)
1290
(586)
1320
(600)
1350
(614)
1540
(700)
1570
(714)
1600
(727)
1670
(759)
1710
(777)
1750
(795)
(1) Correction Factors for Other Refrigerants - Use R404A Values Multiplied By
(2) NORMAL CHARGE IS THE REFRIGERANT CHARGE FOR WARM AMBIENT OR SUMMER OPERATION.
(3) 90% FULL IS THE LIQUID REFRIGERANT WEIGHT AT 90% OF INTERNAL VOLUME AND IS FOR REFERENCE ONLY.
R22 R-134a R-507 R407C
1.14 1.11 1.00 1.11
- 7 -
Page 8
DIMENSIONAL DATA -
1 - 3 FANS LONG
K50-KCM-PDI-2
09/09/09
KCM 60Hz
VERTICAL AIR - SINGLE ROW MODELS
ELECTRICAL END VIEW
[ 78 ]
3 1/16
21
[ 533 ]
24
[ 610 ]
2
[ 51 ]
8
MODEL NUMBER FANS LONG
KCM009
KCM010
KCM011
1 42½ 1080 22 559 - -
KCM012
KCM013
KCM014
KCM016
KCM017
KCM018
2 82½ 2096 62 1575 - -
KCM020
KCM021
KCM022
KCM024
KCM025
KCM028
KCM030
KCM032
3 122½ 3112 102 2591 - -
KCM033
KCM035
KCM037
KCM039
KCM041
KCM043
4 162½ 4162 62 1575 72 1829
KCM045
KCM048
42 5/8
[ 1083 ]
2
[ 51 ]
8
22 1/8
[ 203 ][ 203 ]
[ 562 ]
42 1/8
[ 1070 ]
2
[ 51 ]
Inches mm Inches mm Inches mm
SIDE VIEW
L
39
[651]
255/8
[ 203 ]
2 3/4
[ 70 ]
8
2 3/4
[ 70 ]
8
[ 203 ]
M1
PIPING END VIEW
[991]
11 5/8
7/8
[ 22 ]
[ 203 ]
1 3/4
[ 44 ]
[ 295 ]
4 FANS LONG
SIDE VIEW
L
[ 203 ]
2
8
M1
[ 203 ]
[ 51 ]
8
M2
2
[ 51 ]
8
L M1 M2
2
[ 51 ]
8
- 8 -
Page 9
DIMENSIONAL DATA -
[ 610 ]
[ 203 ]
[ 51 ]
2
8
82 5/8
62 5/8
[ 1591 ]
[ 2099 ]
[ 203 ]
[ 51 ]
8
2
24
[ 533 ]
21
[ 78 ]
3 1/16
ELECTRICAL END VIEW
82 5/8
[ 2099 ]
[ 203 ]
11 5/8
[ 295 ]
[ 44 ]
1 3/4
8
[ 22 ]
7/8
[ 51 ]
2
PIPING END VIEW
4 FANS LONG
[ 203 ]
8
[ 51 ]
2
M1
8
[ 203 ]
2
[ 51 ]
M2
8
[ 51 ]
2
SIDE VIEW
L
1 - 3 FANS LONG
[ 70 ]
8
[ 203 ]
2 3/4
M1
[ 203 ]
8
[ 70 ]
2 3/4
L
SIDE VIEW
255/8
[651]
39
[991]
K50-KCM-PDI-2
09/09/09
KCM 60Hz
VERTICAL AIR - DOUBLE ROW MODELS
MODEL NUMBER FANS LONG
KCM034
KCM036
KCM040
KCM042
2 82½ 2096 62 1575 - -
Inches mm Inches mm Inches mm
KCM044
KCM047
KCM051
KCM056
KCM060
KCM063
3 122½ 3112 102 2591 - -
L M1 M2
KCM066
KCM070
KCM073
KCM078
KCM082
KCM086
4 162½ 4128 62 1575 72 1829
KCM090
KCM095
- 9 -
Page 10
DIMENSIONAL DATA -
L
K50-KCM-PDI-2
09/09/09
KCM 60Hz
HORIZONTAL AIR - SINGLE ROW MODELS
ELECTRICAL END VIEW
1 - 3 FAN
221/8
[562]
4 1/2
[ 114 ]
4 FAN
4 1/2
[ 114 ]
MODEL NUMBER FANS LONG
KCM009
KCM010
KCM011
KCM012
KCM013
KCM014
KCM016
KCM017
KCM018
KCM020
KCM021
KCM022
KCM024
KCM025
KCM028
KCM030
KCM032
KCM033
KCM035
KCM037
KCM039
KCM041
KCM043
KCM045
KCM048
1 42½ 1080 36¾ 933 - -
2 82½ 2096 76¾ 1949 - -
3 122½ 3112 116¾ 2965 - -
4 162½ 4128 77
AIR FLOW
1 11/16
[ 43 ]
4 1/2
[ 114 ]
[ 51 ]
4 1/2
[ 114 ]
2
M2
M1
M1
22 5/8
[ 122 ]
26
[ 140 ]
44 5/8
[ 1133 ]
1 11/16
[ 43 ]
L M1 M2
Inches mm Inches mm Inches mm
3
/8 1965 773/8 1965
- 10 -
Page 11
DIMENSIONAL DATA -
253/8
411/4
K50-KCM-PDI-2
09/09/09
KCM 60Hz
HORIZONTAL AIR - DOUBLE ROW MODELS
[1048]
[645]
L
AIR FLOW
AIR FLOW
M1
L
3 9/16
[ 90 ]
6 1/2
[ 165 ]
[ 533 ]
[ 838 ]
21
87 5/8
[ 2226 ]
3 9/16
[ 90 ]
33
6 1/2
[ 165 ]
MODEL NUMBER FANS LONG
KCM034
KCM036
KCM040
KCM042
2 82½ 2096 81¼ 2064 - -
KCM044
KCM047
KCM051
KCM056
KCM060
KCM063
3 122½ 3112 121¼ 3080 - -
KCM066
KCM070
KCM073
KCM078
KCM082
KCM086
4 162½ 4128 79¼ 2015 79
KCM090
KCM095
M1 M2
2 5/8
L M1 M2
Inches mm Inches mm Inches mm
5
/6 2015
- 11 -
Page 12
WIRING DIAGRAM
K50-KCM-PDI-2
09/09/09
KCM 60Hz
LEGEND
FROM CONTACTOR
CONTROL CIRCUIT
(SINGLE ROW MODELS - SINGLE PHASE UNITS)
VSC1
M1
HEADER END
FAN MOTOR LOCATION
FAN MOTOR
SPLICE BOXES
1
AMPS
230
VOLTS
CONTROL CIRCUIT
50
TRANSFORMER FUSES
PRIMARY FUSES (2) REQ'D.
TRANS. VA
F - FUSE
C - CAPACITOR
ATR - AUTOTRANSFORMER
CTR - CONTROL TRANSFORMER
L2
L1
(AMBIENT , PRESSURE , OR SOLID-STATE RELAY)
FC - MASTER FAN CONTROL (BY OTHERS)
M - FAN MOTOR
FCC - FAN CYCLING CONTROL
F2
F1
TB - TERMINAL BLOCK
RH - RECEIVER HEATER
MC - MOTOR CONTACTOR
* - FIELD SUPPLIED BY OTHERS
VTR - VARIABLE SPEED CONTROL TRANSFORMER
VSC - SOLID STATE VARIABLE FAN SPEED CONTROL
N
N
BL
A
RD A
FC1*
B
NOTES
2. USE 75°C WIRE (OR HIGHER)
1. USE COPPER CONDUCTORS ONLY
BL 61
MC1
RD 41
1
RD 1
RD 2
3. OPTIONAL COMPONENTS -FACTORY OR
BL 62
FCC2
INSTALLED BY OTHERS
4. CONDUCTORS/WIRNG
MC2
RD 42
2
RD 22
FACTORY WIRING
BL 63
FCC3
RD 3
FACTORY WIRING
OPTIONAL COMPONENT
WIRING BY OTHERS
MC3
RD 43
3
RD 23
BL=BLUE ALL OTHER BLACK
G=GREEN RD=RED YL=YELLOW
5. ALL FIELD WIRING MUST BE DONE IN
COMPLIANCE WITH ALL APPLICABLE LOCAL
AND NATIONAL CODES.
1
IS CLOCKWISE
MOTOR ROTATION
FACING SHAFT END
M2
M4
M3
2 FAN
3 FAN
1
0.5
1.25
460
460
230
575
575 0.5
100
3.520.5
230
250
1.25
575
460
CONTROL PANEL END
4 FAN
SECONDARY FUSES (1) REQ'D.
L2L1
AIR
(TOP VIEW)
120V 230V
VOLTS/AMPS
24V
TRANS. VA
C1
BK
BK
FLOW
FAN MOTOR
SPLICE BOXES
1
2
0.51
1.5
3.5
7.5
15
3.5
50
100
250
FAN MOTOR FUSES
ALL VOLTAGES 10 AMPS
BN/WH
BN
WH
BK
1
DIAGRAM NUMBERREVISIONS
SHT OF
KCM-LIT3
COND._WIRING_DIAGRAM
DRW. BY:
DATE:
3_FAN_(1X3)
M1
575V, 1PH
MOTOR WIRING
575V 1 PHASE MOTORS
C1
BN/WH
BN
RD
BK
M1
OR
460V, 1PH
WH
BK
L2L1
BK
MOTOR WIRING DETAIL
C1
208-230 / 460V 1 PHASE MOTORS
BK
BK
L1 L2
BL
BN/WH
BN
RD
OR
BL
BK
MOTOR WIRING
M1
WH
208-230V, 1PH
MOTOR WIRING
ELECTRICAL REQUIREMENTS.
REFER TO DATAPLATE FOR
L3
L2
L1
SWITCH
DISCONNECT
( BY OTHERS )
G
FCC3FCC2
TB2
4
2
1
3
N
A
D E
B
F2
CTR
F1
C3
BN/WH
BKWH
BK
C2
BKWH
BK
C1
BKWH
BK
BN
RD
OR
BL
BK
BN/WH
BN
RD
OR
BL
BK
BN/WH
BN
RD
OR
BL
BK
M3
M2
M1
ARE LOCATED IN MOTOR
NOTE: FAN MOTOR CAPACITORS
SPLICE BOXES
CONTROL PANEL LAYOUT
L3L2L1
TB1
CIRCUIT
TO CONTROL
MC3
MC2
T2 T3
T1
L1 L2 L3
T2 T3
T1
L1 L2 L3
TB1
MC1
T2 T3
T1
L1 L2 L3
L2L1 L3
C
M4
L3
T3
M3
L2L1
MC3
T1 T2
L3
T3
L2L1
MC2MC1
L3
L2L1
FAN MOTOR LEADS
T1 T2
M1 M2
T3
T1 T2
G
- 12 -
Page 13
WIRING DIAGRAM
WIRING DIAGRAM
( SINGLE ROW MODELS - THREE PHASE UNITS )
K50-KCM-PDI-2
09/09/09
KCM 60Hz
LEGEND
L2
L1
FROM CONTACTOR
CONTROL CIRCUIT
(SINGLE ROW MODELS - THREE PHASE UNITS)
E RELAY)
F - FUSE
C - CAPACITOR
(AMBIENT , PRESSURE , OR SOLID-STAT
FC - MASTER FAN CONTROL (BY OTHERS)
M - FAN MOTOR
ATR - AUTOTRANSFORMER
CTR - CONTROL TRANSFORMER
MC - MOTOR CONTACTOR
FCC - FAN CYCLING CONTROL
F2
FACTORY WIRING
WIRING BY OTHERS
OPTIONAL COMPONENT
FACTORY WIRING
INSTALLED BY OTHERS
3. OPTIONAL COMPONENTS -FACTORY OR
2. USE 75°C WIRE (OR HIGHER)
4. CONDUCTORS/WIRNG
1. USE COPPER CONDUCTORS ONLY
BL 62
BL 63
MC2
MC1
RD 42
RD 41
1
2
RD 1
RD 22
FCC2
FCC3
RD 3
RD 2
G=GREEN RD=RED YL=YELLOW
BL 64
MC3
RD 43
3
RD 23F1RD 24
FCC4
RD 4
BL=BLUE ALL OTHER BLACK
MC4
RD 44
4
TB - TERMINAL BLOCK
RH - RECEIVER HEATER
VSC - SOLID STATE VARIABLE FAN SPEED CONTROL
N
BL
NOTES
* - FIELD SUPPLIED BY OTHERS
VTR - VARIABLE SPEED CONTROL TRANSFORMER
N
A
RD A
FC1*
B
BL 61
AND NATIONAL CODES.
COMPLIANCE WITH ALL APPLICABLE LOCAL
5. ALL FIELD WIRING MUST BE DONE IN
VSC1
M1
HEADER END
FAN MOTOR LOCATION
FAN MOTOR
SPLICE BOXES
AMPS
VOLTSTRANS. VA
CONTROL CIRCUIT
TRANSFORMER FUSES
PRIMARY FUSES (2) REQ'D.
1
IS CLOCKWISE
MOTOR ROTATION
FACING SHAFT END
M4
M3
M2
3 FAN
2 FAN
1
1
1.25
0.5
0.5
0.5
575
575
230
460
460
230
50
100
3.5
230
250
2
1.25575
460
CONTROL PANEL END
4 FAN
SECONDARY FUSES (1) REQ'D.
L2L1 L2
BKBKBK
(TOP VIEW)
VOLTS/AMPS
BK
AIR
FLOW
FAN MOTOR
SPLICE BOXES
2
1
0.51
3.5
1.5
15
7.5
3.5
24V 230V120V
50
250
100
FAN MOTOR FUSES
ALL VOLTAGES 10 AMPS
TRANS. VA
BK
BK
T3
BK
BK
T2
M1
BK
T1
1
DIAGRAM NUMBERREVISIONS
SHT OF
KCM-LIT2
COND._WIRING_DIAGRAM
DRW. BY:
DATE:
4_FAN_(1X4)
575V, 3PH
MOTOR WIRING
575V 3 PHASE MOTORS
BK
BK
P6
T9
BK
BK
P5
T6
BKBK
P4
T8
M1M1
BK
T3
T5
BK
T7
T2
BK
T4
T1
BK
T9
BK
T6 P6
T3T8
BK
P5
BKT2BK
T5
BK
P4T4
T7
BK
T1
BK
BK
MOTOR WIRING
BK
BK
BK
BK
BK
208-230V, 3PH 460V, 3PH
MOTOR WIRING
BK
BK
BK
L2
BK
BK
BK
BK
L1 L2
MOTOR WIRING DETAIL
BK
BK
BK
BK
208-230 / 460V 3 PHASE MOTORS
L2 L2
BKBK
L1
ELECTRICAL REQUIREMENTS.
REFER TO DATAPLATE FOR
L3L2L1
FCC4
FCC2 FCC3
TB2
2
4
1
N
E 3
DC
F2
CIRCUIT
TO CONTROL
T2 T3
T1
L1 L2 L3
MC3
T2 T3
T1
L1 L2 L3
MC3
T2 T3
T1
SWITCH
DISCONNECT
( BY OTHERS )
TB1
L2L1 L3
L1 L2 L3
MC2
T2 T3
T1
L1 L2 L3
MC1
121110
TB5
TB4
65
4 7 8 9
TB3
3
1 2
TB2
BK
BK
BK
T3
BK
BK
BK
T2
M3
BK
BK
BK
T1
BK
BK
BK
T3
BK
BK
BK
T2
M3
BK
BK
BK
T1
BK
BK
BK
T3
BK
BK
BK
T2
M2
BK
BK
BK
T1
BK
BK
BK
T3
BK
BK
BK
T2
M1
BK
BK
BK
T1
F1
CONTROL PANEL LAYOUT
L3L2L1
TB1
B A
CTR
L3
T3
L2L1
M4
T1 T2
L3
T3
M3
L2L1
MC3
T1 T2
L3
T3
M2
L2L1
MC2 MC4
L3
L2L1
MC1
FAN MOTOR LEADS
T1 T2
M1
T3
T1 T2
G
G
- 13 -
Page 14
WIRING DIAGRAM
K50-KCM-PDI-2
09/09/09
KCM 60Hz
LEGEND
FROM CONTACTOR
CONTROL CIRCUIT
(DOUBLE ROW MODELS - THREE PHASE UNITS)
FAN MOTOR
HEADER END
FAN MOTOR LOCATION
VSC2 VSC1
1
AMPS
230
VOLTS
CONTROL CIRCUIT
50
TRANSFORMER FUSES
PRIMARY FUSES (2) REQ'D.
TRANS. VA
0.5
460
F - FUSE
C - CAPACITOR
ATR - AUTOTRANSFORMER
CTR - CONTROL TRANSFORMER
L2
F2
L1
F1
(AMBIENT , PRESSURE , OR SOLID-STATE RELAY)
FC - MASTER FAN CONTROL (BY OTHERS)
M - FAN MOTOR
FCC - FAN CYCLING CONTROL
SEC.
PRIM.
CTR
REFER TO
FOR DETAILS.
TRANSFORMER
WIRING DIAGRAM
RH - RECEIVER HEATER
MC - MOTOR CONTACTOR
RD
TB - TERMINAL BLOCK
VTR - VARIABLE SPEED CONTROL TRANSFORMER
VSC - SOLID STATE VARIABLE FAN SPEED CONTROL
N
BL
RD A
F3
FC1*
NOTES
* - FIELD SUPPLIED BY OTHERS
N
A
B
INSTALLED BY OTHERS
3. OPTIONAL COMPONENTS -FACTORY OR
2. USE 75°C WIRE (OR HIGHER)
4. CONDUCTORS/WIRNG
1. USE COPPER CONDUCTORS ONLY
BL 61
MC1
RD 41
1
RD 1
WIRING BY OTHERS
FACTORY WIRING
BL 63
FCC3
RD 3
FACTORY WIRING
OPTIONAL COMPONENT
MC3
RD 43
3
RD 23
BL=BLUE ALL OTHER BLACK
G=GREEN RD=RED YL=YELLOW
5. ALL FIELD WIRING MUST BE DONE IN
BL 65
RD 5
COMPLIANCE WITH ALL APPLICABLE LOCAL
FCC5
AND NATIONAL CODES.
MC5
RD 45
5
RD 25
BL 67
MC7
RD 47
5
RD 27
FCC7
RD 7
SPLICE BOXES
4 FAN
1.25
0.5
230
575
100
1
IS CLOCKWISE
FAN MOTOR
MOTOR ROTATION
SPLICE BOXES
FACING SHAFT END
M5M1M3
M7
AIR
FLOW
(TOP VIEW)
M6M2M4
M8
CONTROL PANEL END
6 FAN
8 FAN
2
1
0.5
1
0.5
575
460
230V
2
3.5
1.25
1
3.5
1.5
120V
VOLTS/AMPS
230
460
575
250
15
7.5
3.5
24V
50
250
100
FAN MOTOR FUSES
ALL VOLTAGES 10 AMPS
TRANS. VA
SECONDARY FUSES (1) REQ'D.
BK
BK
BK
T3
BK
BK
BK
T2
M1
BK
BK
BK
L1 L2 L2
T1
1
DIAGRAM NUMBERREVISIONS
SHT OF
KCM-LIT4
COND._WIRING_DIAGRAM
DRW. BY:
DATE:
8_FAN_(2X3)
575V, 3PH
MOTOR WIRING
575V 3 PHASE MOTORS
BK
BK
P6
T9
BK
BK
P5
T6P6T6
BK
BK
P4
T8
M1
BK
BK
BK
BKBKBK
L2 L2
BK
BK
L1
MOTOR WIRING DETAIL
L2
BK
BK
BK
BK
208-230 / 460V 3 PHASE MOTORS
L2
BK
BK
L1
BK
T3
T5
460V, 3PH
BK
T7
T2
BK
T1
BK
T9
BK
T3
BK
T8
BK
T2
BK
T7
BK
T1
MOTOR WIRING
BK
T4
BK
BK
BK
M1
BK
T5 P5
BK
208-230V, 3PH
MOTOR WIRING
BK
T4 P4
ELECTRICAL REQUIREMENTS.
REFER TO DATAPLATE FOR
L3
L2
L1
SWITCH
DISCONNECT
( BY OTHERS )
G
CIRCUIT
TO CONTROL
BK
BK
BK
BK
T2 T3
T1
L1 L2 L3
T2 T3
T1
L1 L2 L3
BK
BK
BK
BK
BK
BK
BK
BK
T3
T2
M8
T1
T3
T2
M7
T1
T3
T2
M6
T1
T3
T2
M5
T1
FCC5
FCC7
FCC3
SEC.
CTR
PRIM.
F3
F2
CTR
F1
TB2
4
3
2
1
5 76 8
N
E
AB
C D
MC5 MC7
BK
BK
BK
BK
T2 T3
T1
L1 L2 L3
BK
BK
MC3
BK
BK
BK
TB1
L2L1 L3
T2 T3
T1
L1 L2 L3
MC1
BK
BK
BK
T3
T2
M4
T1
T3
T2
M3
T1
T3
T2
M2
T1
T3
T2
M1
T1
CONTROL PANEL LAYOUT
L3
T3
L2L1
MC7
T1 T2
L3
T3
L2L1
MC5
T1 T2
L3
T3
L2L1
T1 T2
L3
T3
L2L1
MC1 MC3
T1 T2
L3L2L1
TB1
M8
M7
F
M6
M5
F
M4
FAN MOTOR LEADS
M3
FF
M2
M1
G
-14 -
Page 15
WIRING DIAGRAM
WIRING DIAGRAM
( DOUBLE ROW MODELS WITH SINGLE PHASE FAN SPEED CONTROL - P66 )
K50-KCM-PDI-2
09/09/09
KCM 60Hz
(DOUBLE ROW MODELS WITH SINGLE PHASE
FAN SPEED CONTROL - P66)
FACTORY WIRING
WIRING BY OTHERS
OPTIONAL COMPONENT
LEGEND
C - CAPACITOR
ATR - AUTOTRANSFORMER
CTR - CONTROL TRANSFORMER
L2
L1
FROM CONTACTOR
CONTROL CIRCUIT
F - FUSE
FC - MASTER FAN CONTROL (BY OTHERS)
FCC - FAN CYCLING CONTROL
F2
PRIM.
F1
REFER TO
(AMBIENT , PRESSURE , OR SOLID-STATE RELAY)
M - FAN MOTOR
MC - MOTOR CONTACTOR
RH - RECEIVER HEATER
SEC.
RD
CTR
FOR DETAILS.
TRANSFORMER
WIRING DIAGRAM
TB - TERMINAL BLOCK
VTR - VARIABLE SPEED CONTROL TRANSFORMER
VSC - SOLID STATE VARIABLE FAN SPEED CONTROL
N
BL
RD A
F3
FC1*
NOTES
* - FIELD SUPPLIED BY OTHERS
N
BL 61
A
B
FACTORY WIRING
INSTALLED BY OTHERS
3. OPTIONAL COMPONENTS -FACTORY OR
4. CONDUCTORS/WIRNG
2. USE 75°C WIRE (OR HIGHER)
1. USE COPPER CONDUCTORS ONLY
BL 62
BL 63
MC1
MC2
RD 412RD 42
1
RD 2
RD 1
FCC3
RD 3
BL=BLUE ALL OTHER BLACK
G=GREEN RD=RED YL=YELLOW
COMPLIANCE WITH ALL APPLICABLE LOCAL
AND NATIONAL CODES.
5. ALL FIELD WIRING MUST BE DONE IN
BL 67
RD 46
RD 26
FCC6
MC6
BL 68
MC7
MC8
RD 48
RD 47
6
7
8
RD 28
RD 27
FCC8
FCC7
RD 8
RD 7
FCC4
BL 66
BL 65
MC5
MC4
RD 45
RD 44
5
4
RD 24
RD 25
FCC5
RD 6
RD 5
BL 64
MC3
RD 43
3
RD 23
RD 4
VSC1
M1
HEADER END
M2
FAN MOTOR LOCATION
VSC2
AMPS
VOLTS
CONTROL CIRCUIT
TRANSFORMER FUSES
PRIMARY FUSES (2) REQ'D.
TRANS. VA
BK
L2
BK
L1
575V 1 PHSE MOTORS
L1 L2
MOTOR WIRING DETAIL
208-230 / 460V 1 PHASE MOTORS
L1 L2
CIRCUIT
ELECTRICAL REQUIREMENTS.
REFER TO DATAPLATE FOR
L3
L2L1
SWITCH
DISCONNECT
G
TO CONTROL
T2 T3
T1
L1 L2 L3
MC8
T2 T3
T1
L1 L2 L3
T2 T3
T1
L1 L2 L3
MC6
T2 T3
T1
L1 L2 L3
MC5 MC7
T2 T3
T1
L1 L2 L3
MC4MC3
T2 T3
T1
L1 L2 L3
L1
M1G
24V
VSC2
T2 T3
T1
L1 L2 L3
TB1
L2L1 L3
MC2
T2 T3
T1
L1 L2 L3
MC1
VTR2
208V
COM.
ATR2
380/480/575V
L1
M1
24V
G
VSC1
VTR1
208V
COM.
ATR1
380/480/575V
BK
BK
BK
BK
BK
BK
BK
BK
BK
BK
BK
BK
BK
BK
BK
BK
BK
BK
C2
BK
BK
C1
BKBKWH
BN/WH
BN
RD
OR
BL
BK
T3
T2
T1
T3
T2
M7M5
T1
T3
T2
T1
T3
T2
T1
T3
T2
T1
T3
T2
M3
T1
BN/WH
BN
RD
OR
WH
BL
BK
M1
ARE LOCATED IN MOTOR
NOTE: FAN MOTOR CAPACITORS
FAN MOTOR
M3
M4
0.511.2523.5
460
230
C1
C1
BK
BK
C1
BK
BK
M8
M6
M4
M2
SPLICE BOXES
SPLICE BOXES
4 FAN
0.5
575
230
10050250
BN/WH
BN
BK
BN/WH
BN
RD
BK
OR
BL
BN/WH
BN
RD
OR
BL
BK
1
IS CLOCKWISE
FAN MOTOR
MOTOR ROTATION
SPLICE BOXES
FACING SHAFT END
M5
M7
AIR
FLOW
(TOP VIEW)
M6
M8
CONTROL PANEL END
6 FAN
8 FAN
2
1
0.5
1
0.5
575
460
WH
230V
1.25
1
3.5
1.5
120V
VOLTS/AMPS
460
575
230
M1
575V, 1PH
MOTOR WIRING
7.5
3.5
24V
50
100
TRANS. VA
SECONDARY FUSES (1) REQ'D.
BK
BK
BK
BK
L2 L2
BK
BK
L1
15
250
FAN MOTOR FUSES
ALL VOLTAGES 10 AMPS
BK
T3
BK
T2
BK
T1
1
DIAGRAM NUMBERREVISIONS
SHT OF
KCM-LIT5
COND_WIRING_DIAGRAM
DRW. BY:
DATE:
8FAN(2X4)
M1
575V, 3PH
MOTOR WIRING
575V 3 PHASE MOTORS
BK
BK
P6
T9
BK
BK
P5
T6
BK
BK
P4
T8
M1
WH
M1
WH
CTR
CONTROL PANEL LAYOUT
460V, 1PH
MOTOR WIRING
208-230V, 1PH
MOTOR WIRING
ATR1
PRIM.
BK
BK
BKBKBK
L2 L2
BK
BK
L1
L2
BK
BK
208-230 / 460V 3 PHASE MOTORS
BK
BK
L2
BK
BK
L1
575
(480)
208
ATR2
COM
24V
G
VSC1
VTR1
L1
M1
24V
G
VSC2
VTR2
L1
M1
FCC5
FCC4FCC3
SEC.
F3
F2
CTR
F1
L3
T3
L2L1
MC8
T1 T2
F
L3
T3
L2L1
MC7
T1 T2
FFF
L3
T3
L2L1
T1 T2
L3
T3
L2L1
MC5 MC6MC4
T1 T2
L3
T3
L2L1
T1 T2
FF
L3
T3
L2L1
MC3MC2MC1
T1 T2
L3
T3
L2L1
T1 T2
FF
L3
T3
L2L1
T1 T2
L3L2L1
M1
BK
BK
T3
T5
460V, 3PH
BK
T7
T2
BK
BK
BK
BK
BK
BK
BK
FCC8
FCC7FCC6
4N
MOTOR WIRING
BK
T4
T1
BK
P6T6
BK
T3 T9
BK
T8
M1
BK
T2
T5 P5
BK
T7
208-230V, 3PH
MOTOR WIRING
BK
T4 P4
T1
575
(480)
208
COM
TB2
3
2
6 7 8
1
ED 5C
A
B
M8
M7
M6
M5
M4
FAN MOTOR LEADS
M3
M2M1
TB1
L3
T3
L2
T2
SWITCH
DISCONNECT
L1
T1
G
- 15 -
Page 16
WIRING DIAGRAM
K50-KCM-PDI-2
09/09/09
KCM 60Hz
LEGEND
ATR - AUTOTRANSFORMER
L2
L1
FROM CONTACTOR
CONTROL CIRCUIT
( DOUBLE ROW MODELS WITH THREE PHASE
HOFFMAN FAN SPEED CONTROL)
VSC1
M1
HEADER END
M2
FAN MOTOR LOCATION
VSC2
AMPS
230
VOLTS
CONTROL CIRCUIT
TRANSFORMER FUSES
PRIMARY FUSES (2) REQ'D.
TRANS. VA
F - FUSE
C - CAPACITOR
CTR - CONTROL TRANSFORMER
F2
F1
(AMBIENT , PRESSURE , OR SOLID-STATE RELAY)
FC - MASTER FAN CONTROL (BY OTHERS)
M - FAN MOTOR
FCC - FAN CYCLING CONTROL
SEC.
PRIM.
CTR
REFER TO
FOR DETAILS.
TRANSFORMER
WIRING DIAGRAM
RH - RECEIVER HEATER
MC - MOTOR CONTACTOR
RD
* - FIELD SUPPLIED BY OTHERS
TB - TERMINAL BLOCK
VTR - VARIABLE SPEED CONTROL TRANSFORMER
VSC - SOLID STATE VARIABLE FAN SPEED CONTROL
N
BL
RD A
F3
FC1*
N
A
B
NOTES
BL 61
FACTORY WIRING
FACTORY WIRING
OPTIONAL COMPONENT
WIRING BY OTHERS
INSTALLED BY OTHERS
3. OPTIONAL COMPONENTS -FACTORY OR
2. USE 75°C WIRE (OR HIGHER)
1. USE COPPER CONDUCTORS ONLY
BL 62
MC2
MC1
RD 42
RD 41
1
RD 2
RD 1
4. CONDUCTORS/WIRNG
BL 63
2
FCC3
RD 3
BL=BLUE ALL OTHER BLACK
G=GREEN RD=RED YL=YELLOW
COMPLIANCE WITH ALL APPLICABLE LOCAL
AND NATIONAL CODES.
5. ALL FIELD WIRING MUST BE DONE IN
BL 65
BL 64
MC3
RD 43
3
RD 23
RD 4
FCC4
BL 66
MC5
MC4
RD 45
RD 44
5
4
RD 25
RD 24
FCC5
RD 6
RD 5
FCC6
BL 68
BL 67
MC8
MC7
MC6
RD 47
RD 46
RD 26
RD 48
8
7
6
RD 27
RD 28
FCC7
FCC8
RD 7
RD 8
SHTM
IS CLOCKWISE
FAN MOTOR
SPLICE BOXES
M7
M5
M3
M8
M6
M4
4 FAN
6 FAN
1
1.25
0.5
3.521.2510.5
0.5
460
230
575
575
460
460
230
575
25050100
MOTOR ROTATION
CONTROL PANEL END
8 FAN
SECONDARY FUSES (1) REQ'D.
L1 L2 L2
FACING SHAFT END
(TOP VIEW)
VOLTS/AMPS
BK
BKBKBK
BK
FAN MOTOR
SPLICE BOXES
AIR
FLOW
1
2
0.5
230V
1
1.5
3.5
120V
7.5
15
3.5
24V
50
100
250
FAN MOTOR FUSES
ALL VOLTAGES 10 AMPS
TRANS. VA
BK
BK
T3
BK
T2
M1
BK
T1
SHT1
DIAGRAM NUMBERREVISIONS
SHT OF
KCM-LIT6
COND._WIRING_DIAGRAM
DRW. BY:
DATE:
8_FAN_(2X4)
575V, 3PH
MOTOR WIRING
575V 3 PHASE MOTORS
BK
BK
P6
T9
BK
BK
P5
T6
BKBK
P4
T8
BK
T3
T5
BK
T7
T2
BK
T4
T1
BK
T9
BK
T6 P6
T3T8
BK
P5
BKBK
T2
T5
BK
P4T4
T7
BK
T1
M1M1
BK
BK
MOTOR WIRING
BK
BK
BK
BK
BK
208-230V, 3PH 460V, 3PH
MOTOR WIRING
BK
BK
BK
L2
BK
BK
BK
BK
L1 L2
MOTOR WIRING DETAIL
BK
BK
208-230 / 460V 3 PHASE MOTORS
BK
BK
L2 L2
BK
BK
L1
ELECTRICAL REQUIREMENTS.
REFER TO DATAPLATE FOR
L1 L2 L3
SWITCH
DISCONNECT
G
T3
T2
MOTOR
OUTPUT
T1
VSC1
CONTROL PANEL LAYOUT
CTR
24V SENSOR
24V SENSOR
PRIM.
F3
F2
F1
MC8
MC7
MC6
MC4 MC5
MC3
MC1 MC2
TB1
DISCONNECT
FCC5
FCC4
FCC3
SEC.
L3
L2L1
L3
L2L1
L3
L2L1
L3
L2L1
L3
L2L1
L3
L2L1
L3
L2L1
L3
L2L1
L3L2L1
SWITCH
VSC2
CTR
L3
L2
L1
T3
T1 T2
T3
T1 T2
T3
T1 T2
T3
T1 T2
T3
T1 T2
T3
T1 T2
T3
T1 T2
T3
T1 T2
T3
T2
T1
CIRCUIT
TO CONTROL
T2 T3
T1
L1 L2 L3
T2 T3
T1
L1 L2 L3
T2 T3
T1
L1 L2 L3
MC6 MC8MC7
T2 T3
T1
L1 L2 L3
T2 T3
T1
L1 L2 L3
T2 T3
T1
L1 L2 L3
MC3 MC5MC4
L3
T3
L2
T2 T3
T1
L1 L2 L3
TB1
L2L1 L3
MC2
L1 L2 L3
MC1
F5F4
YL
T2 T3
T1
YL
F7
24V
YL
F6
VTR
T2
VSC2
SENSOR
24V
L1
T1
BEND
ON COIL
YL
L3
L2
L1
YL
YL
RETURN
SENSOR
T3
T2
VSC1
SENSOR
24V
T1
BEND
ON COIL
RETURN
SENSOR
BK
BK
BK
BK
BK
BK
BK
BK
BK
BK
BK
BK
BK
BK
BK
BK
BK
BK
BK
BK
BK
BK
BK
BK
T3
T2
M8M2
T1
T3
T2
T1
T3
T2
M6
T1
T3
T2
M5 M7M3
T1
T3
T2
M4
T1
T3
T2
T1
T3
T2
T1
T3
T2
M1
T1
L3
L2
INPUT
THREE
PHASE
L1
T3
T2
MOTOR
OUTPUT
T1
L3
L2
INPUT
THREE
PHASE
L1
FCC8
SEC.
VTR
PRIM.
FCC7
F7
F6
F5
VTR
FCC6
F4
TB2
N4
876
3
2
1
A
C 5D E
B
F
M7
F
F
M5
F
M4
FAN MOTOR LEADS
M3 M8M6
F F
M2
M1
F F
G
- 16 -
Page 17
CONDENSER THEORY
K50-KCM-PDI-2
09/09/09
KCM 60Hz
The purpose of a refrigeration system is to absorb
heat from an area where it is not wanted and reject
this heat to an area where it is unobjectionable.
By referring to the diagram below, it can be seen
that only a few components are required to perform
this task.
High pressure/high temperature vapor leaves the
compressor and is forced into the condenser via
the discharge line. The condenser rst
desuperheats the vapor down to its saturation
point. This saturation point can be expressed as the
condensing temperature of the refrigerant and
varies with condenser size, load and ambient
temperature.
Now the condenser must remove the latent heat of
condensation from the refrigerant so that it may
fully condense. After the refrigerant has fully
condensed, it will be subcooled to some extent.
The liquid leaving the condenser is still at a high
pressure but at a much lower temperature and drains
into the receiver. As the liquid level in the receiver
increases, the vapor is allowed to vent back up to the
condenser via the condensate line.
Because the dip tube almost reaches the bottom of
the receiver, only liquid will enter the liquid line. This
liquid now passes through the metering device where
its pressure is reduced to the evaporating pressure.
The temperature will drop with pressure since the
refrigerant will always attempt to meet its saturation
point during a change of state.
The condensing temperature decreases as the
ambient temperature drops and/or as the condenser
surface increases.
THE BASIC REFRIGERATION CYCLE
- 17 -
Page 18
RECEIVERS SELECTION -
K50-KCM-PDI-2
09/09/09
KCM 60Hz
MODEL
KCM 009 1 24.8 6 30 1 38.0 6 5/8 36 1 60.9 8 5/8 36 1
KCM 010 1 24.8 6 30 1 38.0 6 5/8 36 1 60.9 8 5/8 36 1
KCM 011 1 24.8 6 30 1 38.0 6 5/8 36 1 60.9 8 5/8 36 1
KCM 012 1 24.8 6 30 1 38.0 6 5/8 36 1 60.9 8 5/8 36 1
KCM 013 2 30.0 6 36 1 38.0 6 5/8 36 1 60.9 8 5/8 36 1
KCM 014 2 30.0 6 36 1 38.0 6 5/8 36 1 60.9 8 5/8 36 1
KCM 016 2 30.0 6 36 1 38.0 6 5/8 36 1 60.9 8 5/8 36 1
KCM 017 2 38.0 6 5/8 36 1 60.9 8 5/8 36 1 82.3 8 5/8 48 1
KCM 018 2 38.0 6 5/8 36 1 60.9 8 5/8 36 1 82.3 8 5/8 48 1
KCM 020 2 38.0 6 5/8 36 1 60.9 8 5/8 36 1 82.3 8 5/8 48 1
KCM 021 2 60.9 8 5/8 36 1 82.3 8 5/8 48 1 103.7 8 5/8 60 1
KCM 022 2 60.9 8 5/8 36 1 82.3 8 5/8 48 1 103.7 8 5/8 60 1
KCM 024 2 60.9 8 5/8 36 1 82.3 8 5/8 48 1 103.7 8 5/8 60 1
KCM 025 3 60.9 8 5/8 36 1 82.3 8 5/8 48 1 125.2 10 3/4 48 1
KCM 028 3 60.9 8 5/8 36 1 82.3 8 5/8 48 1 125.2 10 3/4 48 1
KCM 030 3 60.9 8 5/8 36 1 82.3 8 5/8 48 1 125.2 10 3/4 48 1
KCM 032 3 71.6 8 5/8 42 1 103.7 8 5/8 60 1 158.1 10 3/4 60 1
KCM 033 3 71.6 8 5/8 42 1 103.7 8 5/8 60 1 158.1 10 3/4 60 1
KCM 035 3 71.6 8 5/8 42 1 103.7 8 5/8 60 1 158.1 10 3/4 60 1
KCM 037 4 82.3 8 5/8 48 1 125.2 10 3/4 48 1 191.0 10 3/4 72 1
KCM 039 4 82.3 8 5/8 48 1 125.2 10 3/4 48 1 191.0 10 3/4 72 1
KCM 041 4 82.3 8 5/8 48 1 125.2 10 3/4 48 1 191.0 10 3/4 72 1
KCM 043 4 103.7 8 5/8 60 1 158.1 10 3/4 60 1 256.8 10 3/4 96 1
KCM 045 4 103.7 8 5/8 60 1 158.1 10 3/4 60 1 256.8 10 3/4 96 1
KCM 048 4 103.7 8 5/8 60 1 158.1 10 3/4 60 1 256.8 10 3/4 96 1
KCM 034 2 38.0 6 5/8 36 2 60.9 8 5/8 36 2 82.3 8 5/8 48 2
KCM 036 2 38.0 6 5/8 36 2
KCM 040 2 38.0 6 5/8 36 2 60.9 8 5/8 36 2 82.3 8 5/8 48 2
KCM 042 2 60.9 8 5/8 36 2 82.3 8 5/8 48 2 103.7 8 5/8 60 2
KCM 044 2 60.9 8 5/8 36 2 82.3 8 5/8 48 2 103.7 8 5/8 60 2
KCM 047 2 60.9 8 5/8 36 2 82.3 8 5/8 48 2 103.7 8 5/8 60 2
KCM 051 3 60.9 8 5/8 36 2 82.3 8 5/8 48 2 125.2 10 3/4 48 2
KCM 056 3 60.9 8 5/8 36 2 82.3 8 5/8 48 2 125.2 10 3/4 48 2
KCM 060 3 60.9 8 5/8 36 2 82.3 8 5/8 48 2 125.2 10 3/4 48 2
KCM 063 3 71.6 8 5/8 42 2 103.7 8 5/8 60 2 158.1 10 3/4 60 2
KCM 066 3 71.6 8 5/8 42 2 103.7 8 5/8 60 2 158.1 10 3/4 60 2
KCM 070 3 71.6 8 5/8 42 2 103.7 8 5/8 60 2 158.1 10 3/4 60 2
KCM 073 4 82.3 8 5/8 48 2 125.2 10 3/4 48 2 191.0 10 3/4 72 2
KCM 078 4 82.3 8 5/8 48 2 125.2 10 3/4 48 2 191.0 10 3/4 72 2
KCM 082 4 82.3 8 5/8 48 2 125.2 10 3/4 48 2 191.0 10 3/4 72 2
KCM 086 4 103.7 8 5/8 60 2 158.1 10 3/4 60 2 256.8 10 3/4 96 2
KCM 090 4 103.7 8 5/8 60 2 158.1 10 3/4 60 2 256.8 10 3/4 96 2
KCM 095 4 103.7 8 5/8 60 2 158.1 10 3/4 60 2 256.8 10 3/4 96 2
FANS
Capacity* Diameter Length
LONG
Lbs inches inches Lbs inches inches Lbs inches inches
OPTION 1 OPTION 2 OPTION 3
(Lbs R404A @ 90% Full)
SINGLE CIRCUIT PER FAN WIDE
Capacity* Diameter Length
Qty
SINGLE ROW MODELS
DOUBLE ROW MODELS
60.9 8 5/8 36 2 82.3 8 5/8 48 2
Capacity* Diameter Length
Qty
Qty
* Capacity per receiver
** Consult Factory for further receiver selections
- 18 -
Page 19
RECEIVERS SELECTION -
K50-KCM-PDI-2
09/09/09
KCM 60Hz
MODEL
KCM 009 1 15.8 5 28 2 24.8 6 30 2 38.0 6 5/8 36 2
KCM 010 1 15.8 5 28 2 24.8 6 30 2 38.0 6 5/8 36 2
KCM 011 1 15.8 5 28 2 24.8 6 30 2 38.0 6 5/8 36 2
KCM 012 1 15.8 5 28 2 24.8 6 30 2 38.0 6 5/8 36 2
KCM 013 2 15.8 5 28 2 24.8 6 30 2 38.0 6 5/8 36 2
KCM 014 2 15.8 5 28 2 24.8 6 30 2 38.0 6 5/8 36 2
KCM 016 2 15.8 5 28 2 24.8 6 30 2 38.0 6 5/8 36 2
KCM 017 2 24.8 6 30 2 38.0 6 5/8 36 2 60.9 8 5/8 36 2
KCM 018 2 24.8 6 30 2 38.0 6 5/8 36 2 60.9 8 5/8 36 2
KCM 020 2 24.8 6 30 2 38.0 6 5/8 36 2 60.9 8 5/8 36 2
KCM 021 2 30.0 6 36 2 38.0 6 5/8 36 2 60.9 8 5/8 36 2
KCM 022 2 30.0 6 36 2 38.0 6 5/8 36 2 60.9 8 5/8 36 2
KCM 024 2 30.0 6 36 2 38.0 6 5/8 36 2 60.9 8 5/8 36 2
KCM 025 3 30.0 6 36 2 60.9 8 5/8 36 2 71.6 8 5/8 42 2
KCM 028 3 30.0 6 36 2 60.9 8 5/8 36 2 71.6 8 5/8 42 2
KCM 030 3 30.0 6 36 2 60.9 8 5/8 36 2 71.6 8 5/8 42 2
KCM 032 3 38.0 6 5/8 36 2 60.9 8 5/8 36 2 82.3 8 5/8 48 2
KCM 033 3 38.0 6 5/8 36 2 60.9 8 5/8 36 2 82.3 8 5/8 48 2
KCM 035 3 38.0 6 5/8 36 2 60.9 8 5/8 36 2 82.3 8 5/8 48 2
KCM 037 4 60.9 8 5/8 36 2 71.6 8 5/8 42 2 103.7 8 5/8 60 2
KCM 039 4 60.9 8 5/8 36 2 71.6 8 5/8 42 2 103.7 8 5/8 60 2
KCM 041 4 60.9 8 5/8 36 2 71.6 8 5/8 42 2 103.7 8 5/8 60 2
KCM 043 4 60.9 8 5/8 36 2 82.3 8 5/8 48 2 103.7 8 5/8 60 2
KCM 045 4 60.9 8 5/8 36 2 82.3 8 5/8 48 2 103.7 8 5/8 60 2
KCM 048 4 60.9 8 5/8 36 2 82.3 8 5/8 48 2 103.7 8 5/8 60 2
KCM 034 2 25 6 30 4 38 6 5/8 36 4 60.9 8 5/8 36 4
KCM 036 2 25 6 30 4 38 6 5/8 36 4 60.9 8 5/8 36 4
KCM 040 2 25 6 30 4 38 6 5/8 36 4 60.9 8 5/8 36 4
KCM 042 2 30 6 36 4 38 6 5/8 36 4 60.9 8 5/8 36 4
KCM 044 2 30 6 36 4 38 6 5/8 36 4 60.9 8 5/8 36 4
KCM 047 2 30 6 36 4 38 6 5/8 36 4 60.9 8 5/8 36 4
KCM 051 3 30 6 36 4 61 8 5/8 36 4 71.6 8 5/8 42 4
KCM 056 3 30 6 36 4 61 8 5/8 36 4 71.6 8 5/8 42 4
KCM 060 3 30 6 36 4 61 8 5/8 36 4 71.6 8 5/8 42 4
KCM 063 3 38 6 5/8 36 4 61 8 5/8 36 4 82.3 8 5/8 48 4
KCM 066 3 38 6 5/8 36 4 61 8 5/8 36 4 82.3 8 5/8 48 4
KCM 070 3 38 6 5/8 36 4 61 8 5/8 36 4 82.3 8 5/8 48 4
KCM 073 4 61 8 5/8 36 4 72 8 5/8 42 4 103.7 8 5/8 60 4
KCM 078 4 61 8 5/8 36 4 72 8 5/8 42 4 103.7 8 5/8 60 4
KCM 082 4 61 8 5/8 36 4 72 8 5/8 42 4 103.7 8 5/8 60 4
KCM 086 4 61 8 5/8 36 4 82 8 5/8 48 4 125.2 10 3/4 48 4
KCM 090 4 61 8 5/8 36 4 82 8 5/8 48 4 125.2 10 3/4 48 4
KCM 095 4 61 8 5/8 36 4 82 8 5/8 48 4 125.2 10 3/4 48 4
* Capacity per receiver
** Consult Factory for further receiver selections
FANS
Capacity* Diameter Length
LONG
Lbs inches inches Lbs inches inches Lbs inches inches
OPTION 1 OPTION 2 OPTION 3
(Lbs R404A @ 90% Full)
TWO EQUAL CIRCUITS PER FAN WIDE
Capacity* Diameter Length
Qty
SINGLE ROW MODELS
DOUBLE ROW MODELS
Capacity* Diameter Length
Qty
Qty
- 19 -
Page 20
GLOSSARY OF TERMS
K50-KCM-PDI-2
09/09/09
KCM 60Hz
Balance point - after a system stabilizes, the heat
added to the refrigerant during the refrigeration cycle
will equal the heat rejected at the condenser. The
balance point usually refers to the actual TD that the
system is operating at. The balance point could refer
to a low side balance or a high side balance. For
example, a system operating with a 120 oF
(48.9 oC) condensing temperature in a 90 oF
(32.2 oC) ambient will have a condenser balance
point of 30 oF (-1.1 oC) TD.
Circuit - a circuit can be considered a group of feeds.
A condenser may be sized to handle several
refrigeration systems at one time. Each system is
considered one circuit and the number of feeds
required for each circuit depends on the THR for that
particular system. Each circuit has its own inlet and
outlet header. The number of circuits on a condenser
can not exceed the total number of feeds available.
Compression Ratio - Compression ratio equals the
discharge pressure in pounds per square inch
absolute (psia) divided by the suction pressure in
psia. The compression ratio in a compressor
increases as suction pressure decreases and as
discharge pressure increases. (at sea-level, psia is
equal to psig plus 14.7).
Compressor Capacity - can be dened as the actual
refrigerating capacity available at the evaporator and
suction line after considering the overall system
balance point. Compressor capacity is mainly
affected by the evaporating and condensing
temperatures of the system.
Condensate Line - (also called “Drain Leg”) is a term
that describes the refrigerant line between the
condenser and the receiver.
The condensate line should drop vertically and is
typically larger than the liquid line. This is to promote
free draining of the refrigerant from the condenser to
the receiver.
Condenser Temperature Difference (TD) - is the
difference between the condensing temperature of
the refrigerant and the temperature of the air
entering the condenser.
Condensing Temperature (CT) - is the
temperature where the refrigerant vapor condenses
back to a liquid. This temperature varies with
condenser size. Condensing temperature should be
kept as low as possible to maintain higher
refrigerating capacity and system efciency
Desuperheat - refers to the lowering of refrigerant
superheat. Hot vapor entering a condenser must
rst be desuperheated before any condensing of the
refrigerant can take place.
Evaporating Temperature - the temperature at
which heat is absorbed in the evaporator, at this
temperature, the refrigerant changes from a liquid to
a vapor. This evaporating temperature is dependent
on pressure and must be lower than the surrounding
temperature for heat transfer to take place.
Feed - a single path for refrigerant ow inside a
condenser. This path begins at the inlet header and
terminates at the condenser’s outlet header. These
feeds can be grouped together to accommodate one
or more circuits.
Heat of Compression - heat is added to the
refrigerant as it is compressed. Evidence of this can
be observed on the pressure-enthalpy diagram for
the refrigerant being used. The amount of this heat
is dependent on the refrigerant type and
compression ratio.
Additional heat from friction also increases the heat
of compression. All of this heat along with the heat
absorbed in the evaporator, suction line and any
motor heat must be rejected by the condenser.
Latent Heat of Vaporization (also Latent Heat of
Condensation) - refers to the heat required to fully
vaporize or condense a refrigerant. This latent heat
varies with temperature and pressure. Latent heat is
often referred to as hidden heat since adding heat to
a saturated liquid or removing heat from a saturated
vapor will result in a change of state and heat
content but not a change in temperature.
Liquid Line - is the piping between the receiver and
the metering device. On systems without a receiver,
the liquid line runs between the condenser and the
metering device.
- 20 -
Page 21
GLOSSARY OF TERMS
K50-KCM-PDI-2
09/09/09
KCM 60Hz
Open Drive - This term is given to a compressor
where its driving motor is separate from the
compressor. In this type of compressor, motor
heat is not transferred to the refrigerant.
Refrigerating Effect - the total amount of heat
absorbed by the evaporator. This heat includes
both latent heat and superheat. This value is
usually expressed in BTU/Hour, (BTUH), or 1000
BTU/Hour (MBH)
Saturation - occurs whenever the refrigerant
exists in both a vapor and liquid state, example: a
cylinder of refrigerant is in a saturated condition or
state of equilibrium. Any heat removed from a
saturated vapor will result in condensation.
Conversely, any heat added to a saturated liquid
will result in evaporation of the refrigerant.
Temperature pressure charts for the various
refrigerants indicate saturation values. For a single
component refrigerant, each temperature value
can only have one pressure when the refrigerant
is either a saturated vapor or saturated liquid.
A single component refrigerant can not change
state until it approaches its saturation temperature
or pressure. For refrigerant blends, the pressuretemperature relationship is more complex. Simply
stated, Dew point temperature (saturation point in
evaporator-low side) and Bubble point temperature
(saturation point in condenser-high side) are used
to dene their saturated condition.
Subcool - to reduce a refrigerant’s temperature
below its saturation point or bubble point.
Subcooling of the refrigerant is necessary in order
to maintain a solid column of liquid at the inlet to the
metering device. Subcooling can take place
naturally (in the condenser) or it can be
accomplished by a suction liquid heat exchanger
or a mechanical sub-cooler (separate refrigeration
system).
Superheat - to heat a refrigerant above its
saturation point or dew point. The “amount of
superheat” is the difference between the actual
refrigerant temperature and its saturation
temperature. This value is usually expressed in
degrees Fahrenheit or degrees Celsius.
Total Heat of Rejection (THR) is the heat
absorbed at the evaporator plus the heat picked up
in the suction line plus the heat added to the
refrigerant in the compressor. Condensers are sized
according to the required THR. Compressor
capacity and the heat of compression are usually
enough to determine the THR.
- 21 -
Page 22
CONDENSER SELECTION
K50-KCM-PDI-2
09/09/09
KCM 60Hz
During a condenser selection process, the
application engineer should choose a condenser
which is large enough to reject all of the heat added
to the refrigerant during the refrigerating cycle.
When the condenser is sized to equal the total heat
of rejection (THR) at design conditions, enough
heat will be rejected to maintain the required
condensing temperature. This will ensure that
sufcient refrigeration capacity will be maintained
at the evaporator during the warm summer period
when it is needed the most.
If a condenser is undersized, the condensing
temperature (CT) will be driven upwards. This
naturally occurs as the system seeks its new
balance point. As the CT increases, the operating
temperature difference (TD) oF the condenser also
increases. Even though the capacity of the
condenser increases with the higher TD, the
refrigerating capacity of the compressor will
decrease due to the higher condensing temperature. An undersized condenser may perform
satisfactorily when ambient temperatures are
below design, but the overall system capacity will
not be high enough during the warmer periods.
Oversizing a condenser increases project costs and
can also lead to undesirable operating conditions.
Low ambient control devices such as pressure
regulators and fan cycling switches operate to
maintain a sufcient pressure in the condenser
during low ambient periods.
On systems utilizing a receiver and ooding type
of head pressure control, more refrigerant will be
required to ood the condenser in order to
achieve the desired condensing pressure.
Consider an air conditioning system with an
oversized condenser which is only used during
the summer time and does not have any type of
head pressure control. This particular system may
experience problems due to a lack of subcooling.
Since the condenser was oversized the amount of
natural subcooling available is less. The maximum
amount of natural subcooling possible is the
difference between the condensing temperature
and the ambient temperature. If this amount of
subcooling is not enough to offset the pressure
losses in the liquid line, then ashing is certain to
occur.
Flashing produces vapor at the metering device
which was designed to meter 100% liquid. One
cure for this is to apply head pressure control
devices to the system that will increase the head
pressure and ensure adequate liquid subcooling.
UNDERSIZED
CONDENSER
PROPERLY SELECTED
CONDENSER
- 22 -
Page 23
CONDENSER SELECTION
K50-KCM-PDI-2
09/09/09
KCM 60Hz
PRELIMINARY DATA REQUIREMENTS
There are several factors that inuence the size of an air
cooled condenser. Before a condenser can be properly
selected, this information must be obtained. It may be
convenient for you to refer to the calculation worksheets
as you read through the following information.
suction vapor picks up heat as it travels through the
warm motor windings. The condenser must be sized to
reject this heat along with any other heat absorbed by
the refrigerant. It can be observed in Table 2 that
hermetic refrigerant cooled compressors have higher
heat of rejection factors.
1. What are the Desired Evaporating and
Condensing Temperatures?
The evaporating temperature is needed to determine
the THR (total heat of rejection) of the condenser. As the
evaporating temperature is lowered, the heat of
compression increases due to the higher compression
ratio. This affects THR.
The required condensing temperature (CT) must be known
before the temperature difference can be determined. This
is necessary since condenser capacity varies with
temperature difference. The required compressor capacity
will determine the maximum CT since the compressor can
only provide this capacity at certain operating conditions.
You could also refer to Table 1 for CT recommendations.
The heat of compression varies with compression ratio.
Both evaporating and condensing temperatures affect the
compression ratio.
Often customers may request a specied TD value
(i.e 10, 15 oF, (5.5 oC, 8.3 oC) etc.). The condensing
temperature is then established as being the sum of this
TD value and the design ambient temperature.
(i.e 10 + 95 = 105 oF (5.5 + 35 = 40.5 oC))
2. Compressor Capacity
Determine the capacity of the compressor at the desired
evaporating and condensing conditions. Remember, tons
refrigeration does not necessarily equal horsepower. As the
evaporating temperature decreases and/or the
condensing temperature increases, tons refrigeration per
horsepower decreases. One ton refrigeration equals 12000
Btuh (3519W).
3. Condenser Ambient Design Temperature
This will be the maximum design temperature of the air
entering the condenser. It is typical to add about 5 oF
to the maximum outdoor design temperature in some
instances to compensate for radiation from a dark
surface such as a black roof.
4. Type of Compressor
It is necessary to identify the type of compressor to be
utilized in the application so that accurate heat of
rejection information may be obtained. For example, open-
drive compressors can be belt driven or direct coupled to
the motor. Electrical energy from the motor is converted to
heat energy which is not transferred to the refrigerant as in
a refrigerant cooled compressor.
In a hermetic refrigerant cooled compressor, the cool
- 23 -
5. Heat of Compression
As the refrigerant is compressed in the compressor, its
heat content increases due to the physical and
thermodynamic properties of the refrigerant. Additional
heat from friction between moving parts in the
compressor also increases the heat content of the
refrigerant. The amount of heat added to the refrigerant
is dependent on the refrigerant type, the compression
ratio and the type of compressor.
Accurate THR or heat of compression factors may be
available from the compressor manufacturer. Always
attempt to access this information prior to using other
methods. If this information is not available, refer to the
heat of rejection factors in Table 2.
However, in situations where your application exceeds
the limits of this table, such as in compound compression
and cascade systems, one of the following calculations
may be performed.
For OPEN DRIVE COMPRESSORS
Total heat of Rejection = Compressor Capacity (Btuh) + (2545 x BHP)
(KW) + (3410 x KW)
(BHP - Brake Horsepower of the motor)
For SUCTION COOLED COMPRESSORS:
Total heat Rejection = Compressor Capacity (BTUH) + (3413 x KW)
(KW may be obtained from the power input curve for that compressor)
6. What is the Refrigerant Type?
A condenser’s capacity can vary by 8 to 10% due to
differences in physical and thermodynamic properties.
Refer to the correct refrigerant capacity table or use
factor as indicated.
7. Altitude
The volume of a given mass of air increases as it rises
above sea level. As its volume increases, its density
decreases. As the air becomes less dense, its heat
capacity decreases. Therefore, more air volume would
have to be forced through the condenser at 6,000 feet
(1852 m) above sea level than at sea level.
Since condenser capacities are based on operation at
sea level, an altitude correction factor must be applied to
the total heat of rejection. Basically, the load on the
condenser will be increased to a point which will compen
sate for the higher altitude.
Page 24
CONDENSER SELECTION
K50-KCM-PDI-2
09/09/09
KCM 60Hz
8. Are you Replacing a Water Cooled Condenser with
a Remote Air Cooled Condenser?
If this is the case, it should be remembered that the
compressor will operate at a higher discharge pressure
after converting to air cooled. To help minimize the
resulting loss in capacity, the condenser should be sized
generously. In other words, you may consider keeping
9. Is this an application for multiple circuits?
If you wish to utilize the condenser for multiple circuits,
then all of the above data must be obtained for EACH
circuit. After obtaining this information, proceed to the
MULTIPLE CIRCUIT WORKSHEET (for single
circuit applications refer to the SINGLE CIRCUIT
WORKSHEET.
the balance point of the condenser as low as possible.
TABLE 1 - CONDENSING TEMPERATURE GUIDELINES
gnitaropavE
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04-(
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04-(
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53+(
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9+otF
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7.21-otC
o
43+otF
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11.1otC
o
05+otF
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01otC
o
05+otF
o
01otC
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smetsySpmeThgiH
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smetsySgninoitidnoCriA
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* TD - Condenser TD guideline
o
o
501ot
o
501-001
F
o
6.04-8.73(
o
011-501
F
o
3.34-6.04(
o
F
511-011
o
1.64-3.34(
o
F
021-511
o
9.84-1.64(
F 5.04ot4.92(
o
)C 59oF 53(
)C
)C
)C
)C
58ta(
o
58
F 4.92(
o
001-59
F
o
8.73-53(
o
501-001
6.04-8.73(
o
011-501
3.34-6.04(
o
511-011
1.64-3.34(
o
)C 09oF 2.23(
)C
F
o
)C
F
o
)C
F
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)C
o
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)C 001oF 8.73(
o
011-501
F
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3.34-6.04(
o
511-011
F
o
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1.64-3.34(
o
F
021-511
o
9.84-1.64(
)C
o
F
521-021
o
7.15-9.84(
)C
senilediuGerutarepmeTgnisnednoC
511-011
021-511
521-021
031-521
o
o
F
o
)C
1.64-3.34(
o
F
o
)C
9.84-1.64(
o
F
o
7.15-9.84(
)C
o
F
o
4.45-7.15(
)C
)C 501oF 6.04(
*DT
o
o
o
021-511
F
o
9.84-1.64(
o
521-021
F
o
7.15-9.84(
o
F
031-521
o
4.45-7.15(
o
F
531-031
o
2.75-4.45(
F
)C
)C
)C
)C
)C
51-01
02-51
52-02
03-52
*DT
(o)C
)3.8-6.5(
)1.11-3.8(
)9.31-1.11(
)7.61-9.31(
TABLE 2 - HEAT OF REJECTION FACTORS
ROTAROPAVE
ERUTAREPMET
o
F
04030201-
0
01
02
03
04
05
o
C
044392328121-
7-
1-
4
01
o
F 23(o)C 001oF 83(o)C 501oF 14(o)C 011
09
MREH
NEPO
*
66.1
*
75.1
73.1
33.1
82.1
42,1
12.1
71.1
41.1
21.1
90,1
24.1
94.1
73.1
24.1
23.1
63.1
82.1
13.1
42.1
62.1
02.1
22.1
71.1
81.1
51.1
41.1
21.1
MREH
NEPO
NEPO
37.1
*
26.1
44.1
35.1
93.1
64.1
43.1
04.1
03.1
43.1
62.1
92.1
22.1
52.1
81.1
12.1
61.1
71.1
31.1
o
34(o)C 511oF 64(o)C 021oF 94(o)C 031oF 55(o)C 041oF 06(o)C
MREH
67.1
*
56.1
55.1
84.1
24.1
63.1
13.1
62.1
32.1
91.1
MREH
NEPO
08.1
86.1
74.1
85.1
24.1
05.1
73.1
44.1
23.1
83.1
82.1
33.1
42.1
82.1
02.1
42.1
71.1
02.1
41.1
NEPO
*
*
44.1
93.1
43.1
03.1
62.1
22.1
81.1
61.1
OPEN - Direct Drive or Belt Drive open compressors
HERM - Hermetic or semi-Hermetic, Refrigerant (suction) cooled motor compressors.
ERUTAREPMETGNISNEDNOC
MREH
09.1
47.1
16.1
35.1
74.1
04.1
53.1
03.1
52.1
22.1
MREH
NEPO
*
*
00.2
*
08.1
*
56.1
74.1
24.1
73.1
23.1
82.1
42.1
02.1
71.1
*
75.1
74.1
05.1
34.1
63.1
73.1
23.1
23.1
72.1
72.1
32.1
32.1
02.1
MREH
NEPO
*
*
*
*
*
*
46.1
*
65.1
14.1
94.1
34.1
73.1
13.1
62.1
MREH
NEPO
*
*
*
*
26.1
74.1
55.1
24.1
94.1
73.1
24.1
23.1
53.1
82.1
92.1
42.1
- 24 -
Page 25
LOW AMBIENT OPERATION
K50-KCM-PDI-2
09/09/09
KCM 60Hz
GENERAL
When a remote air cooled condenser is installed
outdoors, it will be subjected to varying
temperatures. Within many areas, winter to summer
annual temperatures swings can be as high as
120 oF (48.9 oC) or so, this will have a major
impact on the performance of the condenser. As the
ambient temperature drops, the condenser capacity
increases due to the wider temperature difference
between ambient and condensing. As this happens,
the condensing temperature also drops as the
system nds a new balance point. Although the
overall system capacity will be higher at lower
condensing temperatures, other problems can
occur. The capacity of an expansion valve is
affected by both the liquid temperature entering the
valve and the pressure drop across it. As the
condensing temperature decreases, the pressure
drop across the metering device also decreases. A
lower pressure drop decreases the capacity of the
valve. Although lower liquid temperatures increase
the capacity of the metering device, the increase is
not large enough to offset the loss due to the lower
pressure drop.
The following three sections cover the various
options used to control condensing temperatures.
(i) Fan Cycling
Cycling of the condenser fans helps control the condensing temperature. With this approach to solving
low ambient problems, fans are taken
off-line either one at a time, or in pairs. It is not
recommended that multiple fan condensers cycle
more than two fans per step. The reason for this
is that the pressure in the condenser will increase
drastically as several fans are taken off-line at the
same time. This will result in erratic operation of the
refrigeration system and applies additional stress to
the condenser tubes. It is preferable to control the
condensing temperature as smoothly as possible.
Fans should be cycled independently on a
condenser where the fans are all in a single row.
On two row condensers, the fans should be cycled
in pairs.
Ambient temperature sensing controls can be set to
bring on certain fans when the outdoor temperature
reaches a predetermined setpoint. Pressure
sensing controls are set to bring on certain fans
when the condensing pressure reaches the setpoint
on the control. Temperature or pressure setpoints
and differentials should be set in such a way as to
prevent short cycling of the fans. Constant short
cycling will produce a volatile condensing pressure
while decreasing the life of the fan motors.
For recommended fan cycling switch settings, refer to
Table 4. Differential settings on fan cycling
temperature controls should be about 5 oF (2.8 oC).
On fan cycling pressure controls, a differential of
approximately 35 psig is recommended.
On supermarket applications condenser fans may be
cycled individually (not in pairs) and therefore lower
differential settings may apply and will depend on the
specic application.
Fans closest to the inlet header should be permitted
to run whenever the compressor is running. If these
initial fans are wired through a cycling control, the life
of the condenser may be shortened due to the
additional stress placed on the tubes and headers.
Table 3 shows the fan cycling options available for
all condenser models.
(ii) Variable Motor Speed Control
If additional head pressure control is required beyond
the last step of fan cycling variable fan motor speed
may be used. Variable motor speed is optional on
all condenser models. A varying motor speed may
be accomplished using a modulating temperature or
modulating pressure control. A variable speed
controller can be an electronic or solid state device
which varies the voltage going to the motor
depending on the temperature or pressure of the
medium being sensed.
(iii) Refrigerant Regulating Controls
Pressure regulating controls are available from a
number of valve manufacturers. The purpose of such
a control is to regulate the refrigerant ow in such a
way as to maintain a pre-selected condensing
pressure. In lower ambient temperatures, these
valves throttle to maintain the desired pressure and in
doing so, ood the condenser with liquid refrigerant.
The larger the condenser surface is, the higher its
capacity will be. When a condenser is ooded, its
useful condensing surface is reduced. This is
because the refrigerant occupies the space which
would otherwise be used for condensing.
Some control/check valve combinations will
regulate refrigerant ow depending on the pressure at
the inlet of the condenser.These are often referred to
as inlet regulators. As the valve closes, hot gas
bypasses the condenser through a differential check
valve to increase the pressure at the receiver.
- 25 -
Page 26
LOW AMBIENT OPERATION
K50-KCM-PDI-2
09/09/09
KCM 60Hz
CONDENSER
SINGLE VALVE
HEAD
PRESSURE
CONTROL
LIQUID RECEIVER
SINGLE VALVE CONDENSER PRESSURE CONTROL
(Regulates inlet pressure or outlet pressure depending on valve design)
This will ood the condenser until the condensing
pressure increases to a point which will again open
the valve. Other valves regulate the refrigerant at
the outlet of the condenser to provide a similar
effect. These are commonly referred to as outlet
regulators. There are also combination inlet/outlet
regulators with a differential check valve or other
type of condenser bypass arrangement
incorporated within the valve.
Controls which regulate the ow of refrigerant
based on condenser inlet pressure are typically
used in conjuction with a check valve having a
minimum opening differential across the condenser.
Outlet regulators typically require a check valve with
a xed pressure differential setting of between 20
and 35 psi. The differential is needed to
compensate for pressure drop through the
condenser during ooding and associated
discharge piping.
Systems equipped with a condenser ooding
arrangement should always use a receiver having
sufcient liquid holding capacity. Additional liquid
required for ooding is only required during the
winter low ambients and must be stored somewhere
in the system at the higher ambients. Failure to use
an adequately sized receiver will result in liquid
back-up in the condenser during the warmer
summer months. This will cause the system to
develop very high pressures in the high side
resulting in a high pressure safety control trip.
CONDENSER
ORI
VALVE
DIFFERENTIAL
CHECK VALVE
LIQUID RECEIVER
ORI / ORD CONDENSER PRESSURE CONTROL
Determining Additional Flooded
Refrigerant Charge
Additional charge will vary with the condenser
design TD and the coldest expected ambient
temperature. Condensers designed for low TD
applications (low temperature evaporators) and
operating in colder ambients will require more
additional charge than those designed for higher
TD applications (high temperature evaporators)
and warmer ambients.
Refer to Table 5 to determine the required added
refrigerant charge at the selected TD and ambient
temperatures.
These charges are based on condensers using
Fan Cycling options with their last fan (Single Row
Fan Models) running or last pair of fans running
(Double Row Fan models).
WARNING: Do not over charge when charging by
a sightglass. Liquid lines feeding the TXV at the
evaporator must have a solid column of liquid
(no bubbles) however bubbles at the sightglass
(located adjacient to the receiver) may be normal
due to the result of a higher pressure drop at that
point. Bubbles could also appear in the glass
whenever the regulating valves start to ood the
condenser.
Always record the number of drums or the weight
of refrigerant that has been added or removed in
the system. Overcharged systems may result in
compressor failure as well as other serious
mechanical damage to the system components.
- 26 -
Page 27
MOTORS WITH BUILT-IN VARIABLE SPEED
K50-KCM-PDI-2
09/09/09
KCM 60Hz
TABLE 3 - FAN CYCLING CONTROL SCHEDULE
TABLE 4 - AMBIENT FAN CYCLING THERMOSTAT SETTINGS
nosnaFforebmuN
03 )7.61(
52 )9.31(
02 )1.11(
03 )7.61(
52 )9.31(
02 )1.11(
03 )7.61(
52 )9.31(
02 )1.11(
03 )7.61(
52 )9.31(
02 )1.11(
03 )7.61(
52 )9.31(
02 )1.11(
.D.T
51 )3.8(
01 )6.5(
51 )3.8(
01 )6.5(
51 )3.8(
01 )6.5(
51 )3.8(
01 )6.5(
51 )3.8(
01 )6.5(
o
F (o)C
ngiseD
egatSts e1 gatSdn e2 gatSdr3
06 )6.51(
56 )3.81(
07 )1.12(
57 )9.32(
08 )7.62(
06 )6.51(
56 )3.81(
07 )1.12(
57 )9.32(
08 )7.62(
06 )6.51(
56 )3.81(
07 )1.12(
57 )9.32(
08 )7.62(
06 )6.51(
56 )3.81(
07 )1.12(
57 )9.32(
08 )7.62(
55 )8.21(
56 )3.81(
07 )1.12(
57 )9.32(
08 )7.62(
04 )4.4(
55 )8.21(
06 )6.51(
56 )3.81(
57 )9.32(
05 )0.01(
55 )8.21(
56 )3.81(
07 )1.12(
57 )9.32(
55 )8.21(
06 )6.51(
56 )3.81(
07 )1.12(
57 )9.32(
05 )0.01(
06 )6.51(
56 )3.81(
07 )1.12(
57 )9.32(
resnednoC
woRelgniS
sledoM
2 4
3 6
4 8
5 01
6 21
woRelbuoD
sledoM
* NOTE: These are typical settings. Further adjustments may be necessary to suit actual eld conditions.
- 27 -
*gnitteStatsomrehT
o
F (o)C
03 )1.1-(
04 )4.4(
05 )0.01(
06 )6.51(
07 )1.12(
54 )2.7(
05 )0.01(
06 )6.51(
56 )3.81(
07 )1.12(
04 )4.4(
55 )8.21(
06 )6.51(
56 )3.81(
07 )1.12(
Page 28
LOW AMBIENT OPERATION
K50-KCM-PDI-2
09/09/09
KCM 60Hz
R404A WINTER OPERATION CHARGE-LBS DEG F
SUMMER
MODEL
KCM 009 3.7 3.0 4.1 4.8 5.1 5.4 3.7 4.7 5.2 5.5 5.7 4.5 5.2 5.6 5.8 5.9 5.2 5.7 6.0 6.1 6.2
KCM 010 3.7 3.0 4.1 4.8 5.1 5.4 3.7 4.7 5.2 5.5 5.7 4.5 6.0 5.6 5.8 5.9 5.2 5.7 6.0 6.1 6.2
KCM 011 4.5 4.0 5.5 6.3 6.8 7.2 5.0 6.2 6.8 7.3 7.5 6.0 8.0 7.4 7.7 7.9 7.0 7.6 7.9 8.1 8.2
KCM 012 4.5 4.0 5.5 6.3 6.8 7.2 5.0 6.2 6.8 7.3 7.5 6.0 8.0 7.4 7.7 7.9 7.0 7.6 7.9 8.1 8.2
KCM 013 5.2 0 6 9.5 11 13 4.9 9.4 12 13 15 7.9 12 14 15 16 12 15 17 18 19
KCM 014 5.2 0 6 9.5 11 13 4.9 9.4 12 13 15 7.9 12 14 15 16 12 15 17 18 19
KCM 016 5.2 0 6 9.5 11 13 4.9 9.4 12 13 15 7.9 12 14 15 16 12 15 17 18 19
KCM 017 7.1 0 9 13 16 18 6.7 13 16 18 20 11 16 19 21 23 17 20 23 25 26
KCM 018 7.1 0 9 13 16 18 6.7 13 16 18 20 11 16 19 21 23 17 20 23 25 26
KCM 020 7.1 0 9 13 16 18 6.7 13 16 18 20 11 16 19 21 23 17 20 23 25 26
KCM 021 8.8 0 11 16 20 22 8.4 16 20 23 25 14 20 23 26 28 21 25 28 31 33
KCM 022 8.8 0 11 16 20 22 8.4 16 20 23 25 14 20 23 26 28 21 25 28 31 33
KCM 024 8.8 0 11 16 20 22 8.4 16 20 23 25 14 20 23 26 28 21 25 28 31 33
KCM 025 10.8 0 3 15 21 25 0 13 21 25 29 13 23 28 31 34 23 30 34 37 39
KCM 028 10.8 0 3 15 21 25 0 13 21 25 29 13 23 28 31 34 23 30 34 37 39
KCM 030 10.8 0 3 15 21 25 0 13 21 25 29 13 23 28 31 34 23 30 34 37 39
KCM 032 13.4 0 4 19 26 31 0 17 26 32 36 17 28
KCM 033 13.4 0 4 19 26 31 0 17 26 32 36 17 28 34 39 42 29 37 42 46 49
KCM 035 13.4 0 4 19 26 31 0 17 26 32 36 17 28 34 39 42 29 37 42 46 49
KCM 037 14.7 0 0 11 23 30 0 8 24
KCM 039 14.7 0 0 11 23 30 0 8 24 32 37 2 26 35 40 44 29 39 45 50 53
KCM 041 14.7 0 0 11 23 30 0 8 24 32 37 2 26 35 40 44 29 39 45 50 53
KCM 043 18.2 0 0 13 29 37 0 10 30 40 46 2 32 43 50 55 35 48 56 61 65
KCM 045 18.2 0 0 13 29 37 0 10 30 40 46 2 32 43 50 55 35 48 56 61 65
KCM 048 18.2 0 0 13 29 37 0 10 30 40 46 2 32 43 50 55 35 48 56 61 65
KCM 034 14.2 0 18 26 31 35 13 26 32 37 40 22 32 38 42 45 33 41 46 49 52
KCM 036 14.2 0 18 26 31 35 13 26 32 37 40 22 32 38 42 45 33 41 46 49 52
KCM 040 14.2 0 18 26 31 35 13 26 32 37 40 22 32 38 42 45 33 41 46 49 52
KCM 042 17.7 0 22 33 39 44 17 32 40 46 50 27 40 47 52 56 42 51 57 62 65
KCM 044 17.7 0 22 33 39 44 17 32 40 46 50 27 40 47 52 56 42 51 57 62 65
KCM 047 17.7 0 22 33 39 44 17 32 40 46 50 27 40 47 52 56 42 51 57 62 65
KCM 051 21.6 0 7 31 42 49 0 27 42 51 57 27 45 55 62 67 47 60 68 74 78
KCM 056 21.6 0 7 31 42 49 0 27 42 51 57 27 45 55 62 67 47 60 68 74 78
KCM 060 21.6 0 7 31 42 49 0 27 42 51 57 27 45 55 62 67 47 60 68 74 78
KCM 063 26.8 0 8 38 52 61 0 33 52 63 71 33 56 69 77 84 58 74 84 92 98
KCM 066 26.8 0 8 38 52 61 0 33 52 63 71 33 56 69 77 84 58 74 84 92 98
KCM 070 26.8 0 8 38 52 61 0 33 52 63 71 33 56 69 77 84 58 74 84 92 98
KCM 073 29.5 0 0 21 47 60 0 16 49 64 74 4 52 70 81 89 57 78 90 99 106
KCM 078 29.5 0 0 21 47 60 0 16 49 64 74 4 52 70 81 89 57 78 90 99 106
KCM 082 29.5 0 0 21 47 60 0 16 49 64 74 4 52 70 81 89 57 78 90 99 106
KCM 086 36.4 0 0 26 58 75 0 19 60 79 92 4 64 86 100 110 71 97 112 122 131
KCM 090 36.4 0 0 26 58 75 0
KCM 095 36.4 0 0 26 58 75 0 19 60 79 92 4 64.2 86.0 99.7 109.7 71 97 112 122 131
CHARGE
LBS 40 20 0 -20 -40 40 20 0 -20 -40 40 20 0 -20 -40 40 20 0 -20 -40
Design TD = 25 Design TD = 20 Design TD = 15 Design TD = 10
Ambient ° F Ambient ° F Ambient ° F Ambient ° F
ADDITIONAL WINTER CHARGE (LBS)
34 39 42 29 37 42 46 49
32 37 2 26 35 40 44 29 39 45 50 53
19 60 79 92 4 64 86 100 110 71 97 112 122 131
(1) Correction Factors for Other Refrigerants - Use R404A Values Multiplied By
R22 R-134a R-507 R407C
1.14 1.11 1.00 1.11
- 28 -
Page 29
INSTALLATION
K50-KCM-PDI-2
09/09/09
KCM 60Hz
INSPECTION
A thorough inspection of the equipment, including all
component parts and accessories, should be made
immediately upon delivery. Any damage caused in
transit, or missing parts, should be reported to the
carrier at once. The consignee is responsible for
making any claim for losses or damage. Electrical
characteristics should also be checked at this time to
ensure that they are correct.
LOCATION
Before handling and placing the unit into position a
review of the most suitable location must be made.
This condenser is designed for outdoor installation.
A number of factors must be taken into consideration
when selecting a location. Most important is the
provision for a supply of ambient air to the condenser,
and removal of heated air from the condenser area.
Higher condensing temperatures, decreased
performance, and the possibility of equipment failure
may result from inadequate air supply.
Other considerations include:
1. Customer requests
2. Loading capacity of the roof or oor.
3. Distance to suitable electrical supply.
4. Accessibility for maintenance.
5. Local building codes.
6. Adjacent buildings relative to noise levels.
WALLS OR OBSTRUCTIONS
All sides of the unit must be a minimum of 4 feet
(1.25 m) away from any wall or obstruction.
Overhead obstructions are not permitted. If enclosed
by three walls, the condenser must be installed as
indicated for units in a pit.
4 ft
(1.25 m)
min
UNITS IN PITS
The top of the condenser must be level with, or
above the top of the pit. In addition, a minimum of 8
feet (2.5 m) is required between the unit and the pit
walls.
MULTIPLE UNITS
A minimum of 8 feet (2.5 m) is required between
multiple units placed side by side. If placed end to end,
the minimum distance between units is 4 feet (1.25 m).
8 ft
(2.5 m)
min
LOUVERS/FENCES
Louvers/fences must have a minimum of 80% free area
and 4 feet (1.25 m) minimum clearance between the
unit and louvers/fence. Height of louver/fence must not
exceed top of unit.
8 ft
(2.5 m)
min
8 ft
(2.5 m)
min
- 29 -
4 ft
(1.25 m)
min
4 ft
(1.25 m)
min
Page 30
INSTALLATION
K50-KCM-PDI-2
09/09/09
KCM 60Hz
LEG INSTALLATION INSTRUCTIONS
Fig. 1
CENTRE LEG
CORNER LEG
(R.H. SIDE FACING HEADER END SHOWN)
USED ON 4 FAN MODELS ONLY
Air cooled condensers are large, heavy mechanical
equipment and must be handled as such. A fully
qualied and properly equipped crew with necessary
rigging should be engaged to set the condenser into
position. Lifting brackets or holes have been provided
at the corners for attaching lifting slings. Spreader bars
must be used when lifting so that the lifting force must
be applied vertically. See Fig. 2. Under no
circumstances should the coil headers or return
bends be used in lifting or moving the condenser.
1) Assemble centere leg as shown.
Remove two bolts from bottom ange of unit side panels
that match the hole pattern on the top anges of both legs.
Attach center legs using hardware provided at center
divider panel location.
Replace bolts that were removed from from side panels
to secure leg assembly to bottom anges of unit side panels.
2) Assemble four corner legs to bottom anges
on unit side panels and end panels using hardware
provided, at matching mounting hole patterns.
All legs are the same.
Fig. 2
Ensure the unit is placed in a level position (to ensure
proper drainage of liquid refrigerant and oil). The legs
should be securely anchored to the building structure,
sleeper or concrete pad. The weight of the condenser is
not enough to hold in place during a strong wind, the
legs must be anchored.
ANGLE BRACES
LOCATE ANGLE BRACES AS SHOWN
FOR OPTIONAL 36” and 48” LEGS.
LOCATE CROSS BRACES AS SHOWN
CROSS BRACES
ON SINGLE FAN WIDE MODELS
FOR OPTIONAL 36” and 48” LEGS.
- 30 -
Page 31
INSTALLATION
K50-KCM-PDI-2
09/09/09
KCM 60Hz
REFRIGERANT PIPING
All refrigeration piping must be installed by a qualied
refrigeration mechanic. The importance of correct
refrigerant pipe sizing and layout cannot be overemphasized. Failure to observe proper refrigerant
piping practices can result in equipment failure which
may not be covered under warranty.
All air cooled condensers are supplied complete with
headers and refrigerant connections sized for
connecting to standard refrigeration tubing.These
connections may not be the same as the actual line
sizes required for the eld installation. Refer to a
recognized source (ASHRAE charts, manufacturer’s
engineering manuals etc.) for line sizing.
DISCHARGE LINES
The proper design of discharge lines involves following
objective:
(1) to minimize refrigerant pressure drop, since high
pressure losses increase the required compressor
horsepower per ton of refrigeration.
bottom of a vertical riser will prevent oil (and liquid refrigerant) from draining back to the compressor during the
off-cycle. When the vertical lift
exceeds 30 feet (9 m), insert close-coupled traps in the
riser at 30 feet (9 m) intervals.
An alternate method of handling the oil problem would be
the addition of an oil separator see Figure 4 (b).
A reverse trap should be installed at the top of all vertical
risers. The top of the reverse trap should be the highest
point in the discharge line and should have an access
valve installed to allow the reclaimation of non-
condensible gas from the system.
Pulsation of the hot gas in the discharge line is an
inherent characteristic of systems utilizing reciprocating
compressors. The discharge line must be rigidly
supported along its entire length to prevent transmission
of vibration and movement of the line.
Discharge lines must be pitched away from the
compressor to ensure proper drainage of oil being
carried in the line. A discharge check-valve at the
CONDENSATE LINES
The condensate line must be designed to allow free
drainage of refrigerant from the condenser coil to the
receiver. Refer to Fig. 5 for typical condensate line piping
when utilizing head pressure regulating valves.
- 31 -
Page 32
INSTALLATION
K50-KCM-PDI-2
09/09/09
KCM 60Hz
Fig. 3 - 6
Figure 3 - Single Circuit
Figure 5 - Single circuit regulator valve
head pressure control
TYPICAL SYSTEM PIPING
Figure 4(a) - Single circuit with
double discharge riser
(may be required with
capacity control)
Figure 6 - Multiple circuits
Figure 4(b) - Single circuit with
Oil Separator (may be
required with capacity
control)
LEGEND
1 - Compressor
2 - Air Cooled Condenser
3 - Receiver
4 - Condensate Line
5 - Discharge Line
6 - Trap-minimum 18” (157 mm)
7 - Reverse Trap-minimum
6” (152 mm)
8 - Access Schrader Valve
9 - Double Discharge Riser
10 - Head Pressure Regulator
(open on rise of inlet)
11 - Receiver Pressure Regulator
Valve (opens on rise of
differential)
12 - Check Valve “A”
13 - Check Valve “B”
14 - Receiver Relief Valve
15 - Oil Separator
ELECTRICAL WIRING
All wiring and connections to the air cooled condenser
must be made in accordance with the National Electrical
Code and all local codes and regulations. Any wiring
diagrams shown are basic and do not necessarily include
electrical components which must be eld supplied. (see
pages 12-16 for typical wiring diagrams). Refer to the
Electrical Specications table on page 5 for voltage
availability and entering service requirements.
SYSTEM START-UP CHECKS
1. Check the electrical characteristics of all components
to be sure they agree with the power supply.
2. Check tightness of all fans and motor mounts.
3. Check tightness of all electrical connections.
4. Upon start-up, check fans for correct rotation. Air is
drawn through the condenser coil. To change rotation
on 3 phase units reverse any two (2) fan motor leads.
5. All system piping must be thoroughly leak checked
before a refrigerant charge is introduced.
MAINTENANCE
A semi annual inspection should be carried out by a
qualied refrigeration service mechanic. The main power
supply must be disconnected.
1. Check electrical components. Tighten any loose
connections.
2. Check control capillary tubes and lines for signs of wear
due to excessive vibration or rubbing on metal parts.
Secure if necessary.
3. Check tightness of all fans and motor mounts. Remove
any deposits which could effect fan balance. Note: Fan
motors are permanently lubricated and require only
visual inspection.
4. Clean the condenser coil using a soft brush or by
ushing with cool water or coil cleansers available
through NRP (National Refrigeration Products Inc.)
5. Update service log information (back page of service
manual)
- 32 -
Page 33
EC MOTOR APPLICATION
K50-KCM-PDI-2
09/09/09
KCM 60Hz
Motors With Built-in Variable Speed –
Optional “E” Fan/motor Code
Units with an E (versus A) for motor designation
use an EC (electronically commutated) motor / fan
combination to provide variable speed condenser
control. ECM fan/motor combinations use DC
motors with integral AC to DC conversion allowing
direct connection to AC mains with the energy
saving and control benets of a DC motor.
Important Warnings:
!
(Please read before handling motors)
1. When connecting the unit to the power supply,
dangerous voltages occur. Due to motor
capacitor discharge time, do not open the
motor within 5 minutes after disconnection of all
phases.
2. With a Control voltage fed in or a set speed
value being saved, the motor will restart
automatically after a power failure.
3. Dangerous external voltages can be present at
terminal KL2 even when the unit is turned off.
4. The Electronics housing can get hot.
Speed adjustment Characteristics
The EC motor varies its speed linearly based on a
1-10V input signal. At 10 VDC, the motor runs at full
speed. At 0 to approx. 1 VDC, the motor turns off.
A chart of the speed control curve is shown below.
The motor can be controlled at any speed below its
nominal 950-RPM.
950 RPM
RPM
Control Signal
The input control signal can be supplied by an
external control signal or from a factory installed
proportional pressure control. Units with factory
installed proportional pressure controls require no
installation wiring.
External Control Signal (Supplied by others)
Contact control manufacturer for setup of external
controller to provide a 0-10 VDC control signal.
Wire the control signal to terminal board in unit
control box. See page 39 for typical
external signal control wiring.
Proportional Pressure Control
(Factory Installed)
Units with factory installed proportional pressure
controls use a proportional plus integral
pressure controller to vary the motor speed in
order to maintain the desired head pressure. The
proportional plus integral controller has ve user
adjustable features:
• Head Pressure Set point
• Minimum Output
• Throttling range
• Reverse acting or direct acting mode of
operation
• Integration constant
Co ver S cre ws (Q uan ti ty = 4)
Se tpoi nt
Di al
Th rot tlin g R ang e
Po ten tio met er
M ini mu m
Ou tpu t
Po ten tio met er
LE D I ndic ato r
(Pe rc ent of Out put)
THROT
RANGE
MIN
OUTPU
T
Mo du le
Co nne cto r
(s hown in pro por tion al o nly posi tion )
Op era tio n M od e
Ju mpe r P osi tio ns
Fast (C1)
3 4
Medium (C2)
2
Slow (C3)
1
Off
N
O
In teg rat ion DIP Swi tch
Re ve rse
Ac tin g
Direct
Ac tin g
1
Control voltage [V dc]
10
- 33 -
(0 -10 VD C O utp ut) V
(0 -20 mA Ou tpu t) I
(S ens or) (+ ) SN
24 V (2 4 V AC) (+ )
C (Common) (-)
VDC (+5 VDC)
Page 34
EC MOTOR APPLICATION
K50-KCM-PDI-2
09/09/09
KCM 60Hz
Proportional Pressure Control
(Factory Installed)
Units with factory installed proportional pressure
controls use a proportional plus integral
pressure controller to vary the motor speed in
order to maintain the desired head pressure. The
proportional plus integral controller has ve user
adjustable features:
• Head Pressure Set point
• Minimum Output
• Throttling range
• Reverse acting or direct acting mode of
operation
• Integration constant
Head Pressure Set point
The head pressure set point potentiometer is
adjustable from 90-250 psig. Typical set points
are from 170-200 psig.
Note: Very low set points may cause the fan
motors to run full speed continually if the condenser is not properly sized. The fans will turn off
if the system pressure falls below the desired set
point.
Minimum Output
The minimum output potentiometer controls the
minimum signal sent to the motor and is
adjustable between 0 and 60% of the output
range. If this is adjusted to 50%, the motors will
not start running until 5V is applied to the motor.
The motor will start running at 50% of full speed.
To maximize sound reduction and energy savings
and to provide the most stable control, it is
recommended this setting be left at 0%.
change in head pressure. For example, if the set
point is 190 psig and the throttling range is 50 psig,
when the system pressure is below 190 psig, the
fans will be off. When the system pressure reaches
240 psig, the fans will be at full speed. To make the
fans ramp more slowly the throttling range should
be increased. To maximize sound reduction and
energy efciency and to provide for the most stable
control, it is recommended this setting be left at 100
psig.
Reverse acting or direct acting mode of
operation
The reverse acting/direct acting jumper is used to
ensure the controller responds correctly to
maintain desired head pressure. In Direct Acting
(DA) mode, the motor speed increases as the
pressure rises above desired set point. For proper
condenser operation, this jumper MUST be in
Direct Acting (DA) mode. Failure to ensure J1
jumper is in direct acting mode will cause the
system to trip on high head pressure.
Integration constant
The integration constant switch provides ability to
change controller from a proportional only control to
a proportional plus integral control. To provide the
most responsive system and to maintain a stable
head pressure, it is recommended the integration
setting be left on “fast.”
FAST
MEDIUM
SLOW
Throttling range
The throttling range potentiometer controls how
far the system pressure deviates from the control
set point to generate a 100% output signal from
the control and is adjustable from 10 -100 psig.
The throttling range determines how quickly the
motor will reach full speed when detecting a
OFF (PROPORTIONAL ONLY)
- 34 -
Page 35
EC MOTOR APPLICATION
K50-KCM-PDI-2
09/09/09
KCM 60Hz
Transducer Wiring
The P352PN controls use a P399 (or P499) pressure transducer to generate a 0.5 to 4.5 VDC input signal. The
transducer is wired to the terminal block at the bottom of the control as shown in the diagram below.
See page 38 for typical proportional pressure control wiring.
Interior View and Typical Wiring of P352PN Control
Protective Features
The EC motors have many built-in protective features.
The EC motors have functions within the motor to protect
against:
• Over-temperature of electronics
• Over-temperature of motor
• Incorrect rotor position detection
With any of these failures, the motor stops electronically
and an alarm relay is switched. With one of these fail-
ures, the motor WILL NOT automatically restart. To reset,
the power supply has to be switched off for a minimum
20 seconds once the motor is at standstill.
· Locked-rotor protection
As soon as the rotor is blocked, the motor
gets switched off electronically and the alarm
relay is switched. After de-blocking, the motor
WILL restart automatically.
· Under-voltage protection
If power supply voltage falls below ~150VAC/
3Ø (for 230V motors) or ~290VAC/3Ø (for
460V motors) for 5 seconds minimum, the
motor will be switched off electronically and
the alarm relay is switched. If power
supply voltage returns to correct values, the
motor WILL restart automatically.
· Phase Failure
If 1 phase fails for 5 seconds minimum, the
motor will be switched off electronically and
the alarm relay is switched. If all 3 phases
return to correct values, the motor WILL re
start automatically within 10-40 seconds.
- 35 -
Page 36
EC MOTOR APPLICATION
1LK2LK3LK
PE
K50-KCM-PDI-2
09/09/09
KCM 60Hz
EC Motor Wiring
All EC motor wiring is done at the factory. If any motor wiring needs to be done in the eld, the diagram below indicates
the terminal pin congurations inside the motor junction box. The terminals normally used are PE, L1, L2, L3, 0-10V/
PWM, GND, OUT 0-10V and GND. The remainder of the terminals are not normally used.
The diagram on page 38 shows typical motor wiring for a 1 x 4 EC condenser.
RS A
12 11 10 9 8 7 6 5 4 3 2 1 3 2 1 3 2 1
RS B
RS B
0-10
+20 V
+10 V
4-20 mA
0-10 V PWM
V PWM
GND
RS A
NO
OUT
GND
L1
NC
COM
L2
PIN Name Function
PE --- PE Protective earth conductor
KL1 1 L3 Mains; L3
2 L2 Mains; L2
3 L1 Mains; L1
KL2 1 NC Relay status; NC contact with error
Load max. 250 VAC / 2 A at cos? = 1
2 COM Relay status; COMMON Load max.
250 VAC / 2 A at cos? = 1
3 NO Relay status; NO contact with error
Load max. 250 VAC / 2 A at cos? = 1
KL3 1 OUT
0 - 10 V
Master output for control of several
slave fans;
max. 10 mA
2 GND GND
3 0 - 10 V / PWM Analogue input;
Input resistance 100 k Ω
PWM frequency
1 kHz
4 10 V 10 V + 15 % supply for ext. potentio-
meter; max. 10 mA; short-circuitproof
5 20 V 20 V +/- 20 % supply for ext. sensor;
max. 50 mA; short-circuitproof
6 4 - 20 mA Analogue input; 4 - 20 mA;
Load 100 Ω;
Voltage drop 2 V at 20 mA
7 0 - 10 V / PWM Analogue input;
Input resistance 100 k Ω
PWM frequency 1 kHz
8 GND GND
9 RS B RS485 interface for ebmBUS; RS B
connection
10 RS A RS485 interface for ebmBUS; RS A
connection
11 RS B RS485 interface for ebmBUS; RS B
connection
12 RS A RS485 interface for ebmBUS; RS A
connection
L3
PE
- 36 -
Page 37
KCM 60Hz
K50-KCM-PDI-2
09/09/09
8 FAN EC Motor
8 FAN 1075 RPM
46 MBH/TD)
66 dBA @10ft.
52 dBA @ 10ft.
Power Consumption Comparison
8 Fan KCM Condenser with Electronically Commutated Motor vs. 8 Fan Standard Motor 1075 RPM KCM Condenser (Capacity -
TYPICAL OPERATING RANGE
6
5
4
3
2
Power Consumption (kW)
1
0
Load Requirement
20% 30% 40% 50% 60% 70% 80% 90% 100%
- 37 -
Page 38
EC MOTOR WIRING
K50-KCM-PDI-2
09/09/09
KCM 60Hz
w/ PROPORTIONAL PRESSURE CONTROL)
(SINGLE ROW MODELS - ECM
- 38 -
Page 39
EC MOTOR WIRING
K50-KCM-PDI-2
09/09/09
KCM 60Hz
(SINGLE ROW MODELS - ECM w/ EXTERNAL SIGNALS)
- 39 -
Page 40
GENERIC SERVICE PARTS
K50-KCM-PDI-2
09/09/09
KCM 60Hz
DESCRIPTION Part No
FAN MOTOR - 208-230-460/1/60 1087070
FAN MOTOR - 575/1/60 1087071
FAN MOTOR - 208-230/3/60 1088054
FAN MOTOR - 460/3/60 1088053
FAN MOTOR - 575/3/60 1087073
MOTOR MOUNT 1086090
FAN BLADE - 26”, 30° 1087188
FAN BLADE - 26”, 24° for use with P66 only 1087213
FAN GUARD 1086091
RAIN SHIELD 1085266
LEGS
24” 1086150
36” 1086151
48” 1086152
ANGLE BRACE (36” & 48” LEGS) * 1086153
CROSS BRACE ** 1086154
* 1 Per Leg On Single Fan Wide / 2 Per Leg On Double Fan Wide
** 2 Per Unit On 1, 2 & 3 Fan Models, 3 Per Unit On 1 X 4 Fan Models (Not Req’d On Double Wide)
- 40 -
Page 41
NOTES
K50-KCM-PDI-2
09/09/09
- 41 -
Page 42
NOTES
K50-KCM-PDI-2
09/09/09
- 42 -
Page 43
Finished Goods Warranty
K50-KCM-PDI-2
09/09/09
The terms and conditions as described below in the General Warranty Policy cover all products
manufactured by National Refrigeration.
GENERAL WARRANTY POLICY
Subject to the terms and conditions hereof, the Company warrants all Products, including Service Parts,
manufactured by the Company to be free of defects in material or workmanship, under normal use and
application for a period of one (1) year from the original date of installation, or eighteen (18) months from
the date of shipment from the Company, whichever occurs rst. Any replacement part(s) so supplied will
be warranted for the balance of the product’s original warranty. The part(s) to be replaced must be made
available in exchange for the replacement part(s) and reasonable proof of the original installation date of
the product must be presented in order to establish the effective date of the warranty, failing which, the effective date will be based upon the date of manufacture plus thirty (30) days. Any labour, material, refrigerant, transportation, freight or other charges incurred in connection with the performance of this warranty
will be the responsibility of the owner at the current rates and prices then in effect. This warranty may be
transferred to a subsequent owner of the product.
THIS WARRANTY DOES NOT COVER
(a) Damages caused by accident, abuse, negligence, misuse, riot, re, ood, or Acts of God (b) damages
caused by operating the product in a corrosive atmosphere (c) damages caused by any unauthorized
alteration or repair of the system affecting the product’s reliability or performance (d) damages caused
by improper matching or application of the product or the product’s components (e) damages caused by
failing to provide routine and proper maintenance or service to the product (f) expenses incurred for the
erecting, disconnecting, or dismantling the product (g) parts used in connection with normal maintenance,
such as lters or belts (h) products no longer at the site of the original installation (i) products installed or
operated other than in accordance with the printed instructions, with the local installation or building codes
and with good trade practices (j) products lost or stolen.
No one is authorized to change this WARRANTY or to create for or on behalf of the Company any
other obligation or liability in connection with the Product(s). There is no other representation, warranty
or condition in any respect, expressed or implied, made by or binding upon the Company other than the
above or as provided by provincial or state law and which cannot be limited or excluded by such law, nor
will we be liable in any way for incidental, consequential, or special damages however caused.
The provisions of this additional written warranty are in addition to and not a modication of or subtraction
from the statutory warranties and other rights and remedies provided by Federal, Provincial or State laws.
PROJECT INFORMATION
System
Model Number Date of Start-Up
Serial Number Service Contractor
Refrigerant Phone
Electrical Supply Fax
- 43 -
Page 44
“AS BUILT” SERVICE PARTS LIST
09/09/09
Service Parts List
Label
To Be Attached
HERE
NATIONAL REFRIGERATION &
AIR CONDITIONING CANADA CORP.
CANADA
159 ROY BLVD., BRANTFORD, ONTARIO, CANADA N3R 7K1
PHONE: 1-800-463-9517 (519)751-0444 FAX (519)753-1140
Due to National Refrigeration’s policy of continuous product improvement, we reserve the right to make changes without notice.
USA
985 WHEELER WAY, LANGHORNE, PA. 19047 USA
PHONE:1-888-KEEPUS1 OR 1-888-533-7871
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