Disconnect - Carrier COBRA 48/50HJ004-014 Installation And Service

Table 1D — Electrical Data (COBRA™ Energy Recovery 50HJ004-007 Units with 62AQ100) (cont)
NOMINAL IFM
UNIT
V-PH-Hz TYPE
STD
50HJ006
460-3-60 HIGH STATIC
(cont)
HIGH STATIC
STD
STD
208/230-3-60
HIGH STATIC
HIGH STATIC
50HJ007
STD
STD
460-3-60
HIGH STATIC
HIGH STATIC
LEGEND
FLA — Full Load Amps
HACR — Heating, Air Conditioning and Refrigeration
IFM — Indoor (Evaporator) Fan Motor
LRA — Locked Rotor Amps
MCA — Minimum Circuit Amps
MOCP — Maximum Overcurrent Protection
NEC — National Electrical Code
UL — Underwriters' Laboratories
*Used to determine minimum disconnect per NEC.
†Single point box CRSINGLE017A00 is part of base unit.
NOTES:
1. In compliance with NEC requirements for multimotor and combination load
equipment (refer to NEC Articles 430 and 440), the overcurrent protective device
for the unit shall be fuse or HACR breaker. UL, Canada units may be fuse or cir-
cuit breaker.
2. Unbalanced 3-Phase Supply Voltage
Never operate a motor where a phase imbalance in supply voltage is greater
than 2%. Use the following formula to determine the percent of voltage
imbalance.
max voltage deviation from average voltage
= 100 x
average voltage
HEATER
CONV 62AQ
CRHEATER
OUTLET FLA
---A00
NONE
006
008
YES 15.1
009
008+008
008+009
NONE
006
008
NO 15.1
009
008+008
008+009
NONE
006
008
YES 15.1
009
008+008
008+009
NONE
002 13.6/15.6
004 21.9/25.3
NO 15.1
005 33.4/38.5
004+004 43.8/50.5
004+005 55.2/63.8
NONE
002 13.6/15.6
004 21.9/25.3
YES 15.1
005 33.4/38.5
004+004 43.8/50.5
004+005 55.2/63.8
NONE
002 13.6/15.6
004 21.9/25.3
NO 15.1
005 33.4/38.5
004+004 43.8/50.5
004+005 55.2/63.8
NONE
002 13.6/15.6
004 21.9/25.3
YES 15.1
005 33.4/38.5
004+004 43.8/50.5
004+005 55.2/63.8
NONE
006
008
NO 15.1
009
008+008
008+009
NONE
006
008
YES 15.1
009
008+008
008+009
NONE
006
008
NO 15.1
009
008+008
008+009
NONE
006
008
YES 15.1
009
008+008
008+009
HEAT POWER SUPPLY
FUSE OR
FLA MCA
HACR BKR
— 24.9 30
7.2 24.9 30
13.8 30.9 35
16.8 34.6 40
27.7 48.1 50
30.7 51.9 60
— 23.0 30
7.2 23.0 30
13.8 29.6 35
16.8 33.3 35
27.7 46.8 50
30.7 50.6 60
— 25.7 30
7.2 25.7 30
13.8 31.7 35
16.8 35.4 40
27.7 48.9 50
30.7 52.7 60
—/— 47.9/ 47.9 60/60
47.9/ 47.9 60/60
50.9/ 55.1 60/60
65.2/ 71.6 —
78.2/ 86.7 —
92.6/103.2 —
—/— 53.9/ 53.9 60/60
53.9/ 53.9 60/60
55.7/ 59.3 —
70.0/ 75.8 —
83.0/ 90.9 —
97.4/107.4 —
—/— 49.6/ 49.6 60/60
49.6/ 49.6 60/60
52.6/ 56.8 —
66.9/ 73.3 —
79.9/ 88.4 —
94.3/104.9 —
—/— 55.6/ 55.6 60/60
55.6/ 55.6 60/60
57.4/ 61.0 —
71.7/ 77.5 —
84.7/ 92.6 —
99.1/109.1 —
— 22.8 30
7.2 22.8 30
13.8 28.8 35
16.8 32.5 35
27.7 46.0 50
30.7 49.8 50
— 25.5 30
7.2 25.5 30
13.8 30.9 35
16.8 34.6 40
27.7 48.1 50
30.7 51.9 60
— 23.6 30
7.2 23.6 30
13.8 29.6 35
16.8 33.3 35
27.7 46.8 50
30.7 50.6 60
— 26.3 30
7.2 26.3 30
13.8 31.7 35
16.8 35.4 40
27.7 48.9 50
30.7 52.7 60
Example: Supply voltage is 460-3-60.
AB = 452 v
BC = 464 v
AC = 455 v
Average Voltage =
Determine maximum deviation from average voltage.
(AB) 457 – 452 = 5 v
(BC) 464 – 457 = 7 v
(AC) 457 – 455 = 2 v
Maximum deviation is 7 v.
Determine percent of voltage imbalance.
% Voltage Imbalance = 100 x
= 1.53%
This amount of phase imbalance is satisfactory as it is below the maximum allow-
able 2%.
IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact
your local electric utility company immediately.
20
SINGLE DISCONNECT SIZE*
POINT BOX
CRSINGLE
MOCP FLA
---A00
— — 28
— — 28
— 025 28
— 025 36
— 025 48
— 025 52
— — 24
— — 24
— 025 24
— 025 32
— 025 44
— 025 48
— — 29
— — 29
— 025 29
— 025 37
— 025 49
— 025 53
— — 49/ 49
— — 49/ 49
— — 49/ 53
70/ 80 002 62/ 68
80/ 90 003 74/ 82
100/110 003 88/ 97
— — 55/ 55
— — 55/ 55
70/ 70 002 55/ 58
80/ 80 003 68/ 73
90/100 003 80/ 87
100/110 003 93/102
— — 51/ 51
— — 51/ 51
60/ 70 002 51/ 55
70/ 80 002 64/ 70
80/ 90 003 76/ 84
100/110 003 90/ 99
— — 57/ 57
— — 57/ 57
70/ 70 002 57/ 60
80/ 80 003 70/ 75
90/100 003 82/ 89
100/110 003 95/104
— — 23
— — 23
— 025 23
— 025 31
— 025 43
— 025 47
— — 29
— — 29
— 025 29
— 025 36
— 025 48
— 025 52
— — 24
— — 24
— 025 24
— 025 32
— 025 44
— 025 48
— — 30
— — 30
— 025 30
— 025 37
— 025 49
— 025 53
452 + 464 + 455
3
1371
=
3
= 457
7
457
LRA
119
119
119
119
119
119
123
124
124
124
124
124
128
129
129
129
129
129
260/260
260/260
260/260
260/260
260/260
260/260
265/265
265/265
265/265
265/265
265/265
265/265
279/279
279/279
279/279
279/279
279/279
279/279
284/284
284/284
284/284
284/284
284/284
284/284
127
127
127
127
127
127
131
132
132
132
132
132
136
137
137
137
137
137
141
141
141
141
141
141