Carrier COBRA 48HJ004-014, Installation And Service

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NOTE: For wire runs up 50 ft, use no. 18 AWG (American Wire
Gage) insulated wire (35 C minimum). For 50 to 75 ft, use no.
16 AWG insulated wire (35 C minimum). For over 75 ft, use no.
14 AWG insulated wire (35 C minimum). All wire larger than
no. 18 AWG cannot be directly connected to the thermostat and
will require a junction box and splice at the thermostat.
Pass the control wires through the hole provided in the cor-
ner post; then feed wires through the raceway built into the
corner post to the 24-v barrier located on the left side of the
control box. See Fig. 10. The raceway provides the UL
required clearance between high- and low-voltage wiring.
NOTE: A humidistat and a temperature sensor can be used in
place of a thermidistat for PremierLink™ units.
HEAT ANTICIPATOR SETTINGS — Set heat anticipator
settings at .14 amp for the first stage and .14 amp for second-
stage heating, when available.
Table 1A — Electrical Data (COBRA™ Energy Recovery 48HJ004-007 Units with 62AQ060)
LEGEND
*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 circuit 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 volt-
age imbalance.
Example: Supply voltage is 460-3-60.
AB = 452 v
BC = 464 v
AC = 455 v
= 457
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
allowable 2%.
UNIT
NOMINAL
V-PH-Hz
IFM
TYPE
CONV
OUTLET
62AQ
FLA
POWER SUPPLY DISCONNECT SIZE*
MCA
FUSE OR
HACR BKR
FLA LRA
48HJ004
208/230-1-60
STD NO 9.2 34.8/34.8 40/40 35/35 135/135
STD YES 9.2 40.8/40.8 45/45 41/41 140/140
208/230-3-60
STD NO 9.2 27.7/27.7 35/35 29/29 124/124
STD YES 9.2 33.7/33.7 40/35 34/34 129/129
HIGH STATIC NO 9.2 28.6/28.6 35/35 30/30 154/154
HIGH STATIC YES 9.2 34.6/34.6 40/40 35/35 158/158
460-3-60
STD NO 9.2 13.6 20 14 63
STD YES 9.2 16.3 20 20 67
HIGH STATIC NO 9.2 14.0 20 15 77
HIGH STATIC YES 9.2 16.7 20 20 82
48HJ005
208/230-1-60
STD NO 9.2 44.4/44.4 60/60 44/44 173/173
STD YES 9.2 50.4/50.4 60/60 50/50 178/178
208/230-3-60
STD NO 9.2 31.7/31.7 40/40 33/33 140/140
STD YES 9.2 37.7/37.7 40/40 38/38 145/145
HIGH STATIC NO 9.2 32.6/32.6 40/40 34/34 170/170
HIGH STATIC YES 9.2 38.6/38.6 45/45 39/39 174/174
460-3-60
STD NO 9.2 15.2 20 16 70
STD YES 9.2 17.9 20 21 75
HIGH STATIC NO 9.2 15.6 20 16 84
HIGH STATIC YES 9.2 18.3 20 22 89
48HJ006
208/230-1-60
STD NO 9.2 55.5/55.5 70/70 56/56 250/250
STD YES 9.2 61.5/61.5 70/70 61/61 255/255
208/230-3-60
STD NO 9.2 38.1/38.1 45/45 39/39 202/202
STD YES 9.2 44.1/44.1 50/50 44/44 207/207
HIGH STATIC NO 9.2 39.8/39.8 45/45 41/41 221/221
HIGH STATIC YES 9.2 45.8/45.8 50/50 46/46 226/226
460-3-60
STD NO 9.2 19.3 25 20 101
STD YES 9.2 22.0 25 25 106
HIGH STATIC NO 9.2 20.1 25 20 110
HIGH STATIC YES 9.2 22.8 25 26 115
48HJ007
208/230-3-60
STD NO 9.2 42.0/42.0 50/50 42/42 234/234
STD YES 9.2 48.0/48.0 60/60 48/48 239/239
208/230-3-60
HIGH STATIC NO 9.2 43.7/43.7 50/50 44/44 253/253
HIGH STATIC YES 9.2 49.7/49.7 60/60 50/50 258/258
460-3-60
STD NO 9.2 19.8 25 20 114
STD YES 9.2 22.5 25 26 118
HIGH STATIC NO 9.2 20.6 25 21 123
HIGH STATIC YES 9.2 23.3 30 26 128
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
= 100 x
max voltage deviation from average voltage
average voltage
Average Voltage =
452 + 464 + 455
3
=
1371
3
IMPORTANT: If the supply voltage phase imbalance is more than 2%, con-
tact your local electric utility company immediately.
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457