Carrier WEATHERMASTER 50HJQ004-016 Product Data page 69

50TFQ004-012 (UNITS WITH ELECTRICAL CONVENIENCE OUTLET) (cont)
UNIT NOMINAL IFM
50TFQ V-PH-Hz TYPE
STD
208/230-3-60
HIGH-STATIC
007
(6 Tons)
STD
460-3-60
HIGH-STATIC
STD
575-3-60
HIGH-STATIC
LEGEND
FLA — Full Load Amps
HACR — Heating, Air Conditioning and Refrigeration
IFM — Indoor Fan Motor
LRA — Locked Rotor Amps
MCA — Minimum Circuit Amps
MOCP — Maximum Overcurrent Protection
NEC — National Electrical Code
OFM — Outdoor Fan Motor
RLA — Rated Load Amps
*Heaters are field installed only.
†Used to determine minimum disconnect size per NEC.
**Heater capacity (kW) is based on heater voltage of 208 v, 240 v and 480 v. If
power distribution voltage to unit varies from rated heater voltage, heater kW
will vary accordingly.
††Fuse or HACR circuit breaker.
***Optional disconnect switch is unavailable.
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.
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.
% Voltage Imbalance
max voltage deviation from average voltage
= 100 x
average voltage
Example: Supply voltage is 460-3-60.
AB = 452 v
BC = 464 v
AC = 455 v
Average Voltage =
VOLTAGE COMPRESSOR
RANGE (each)
OFM
FLA
Min Max RLA LRA
187 254 22.7 146.0
187 254 22.7 146.0
414 508 11.4 73.0
414 508 11.4 73.0
518 632 9.1 58.4
518 632 9.1 58.4
452 + 464 + 455
3
1371
=
3
= 457
ELECTRIC
HEAT*
IFM
FLA
Nominal
FLA
kW**
— —
4.9/ 6.5 13.6/15.6
7.9/10.5 21.9/25.3
1.4 5.8
12.0/16.0 33.3/38.5
15.8/21.0 43.9/50.5
19.9/26.5 55.2/63.8
— —
4.9/ 6.5 13.6/15.6
7.9/10.5 21.9/25.3
1.4 7.5
12.0/16.0 33.3/38.5
15.8/21.0 43.9/50.5
19.9/26.5 55.2/63.8
— —
6.0 7.2
11.5 13.8
0.7 2.6
14.0 16.8
23.0 27.7
25.5 30.7
— —
6.0 7.2
11.5 13.8
0.7 3.4
14.0 16.8
23.0 27.7
25.5 30.7
0.7 2.6 — —
0.7 3.4 — —
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
This amount of phase imbalance is satisfactory as it is below the maximum
allowable 2%.
IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact
your local electric utility company immediately.
→
POWER EXHAUST ELECTRICAL DATA
POWER EXHAUST
PART NO.
CRPWREXH021A01
CRPWREXH022A01
CRPWREXH023A01
CRPWREXH028A01
CRPWREXH029A01
CRPWREXH030A01
N/A — Not available
NOTE: If a single power source is to be used, size wire to include power exhaust
MCA and MOCP.
Check MCA and MOCP when power exhaust is powered through the unit. Deter-
mine the new MCA including the power exhaust using the following formula:
MCA New = MCA unit only + MCA of Power Exhaust
For example, using a 50TFQ006---5 unit with MCA = 35.6 and MOCP = 40, with
CRPWREXH030A01 power exhaust.
MCA New = 35.6 amps + 1.6 amps = 37.2 amps
If the new MCA does not exceed the published MOCP, then MOCP would not
change. The MOCP in this example is 40 amps and the MCA New is below 40;
therefore the MOCP is acceptable. If "MCA New" is larger than the published
MOCP, raise the MOCP to the next larger size. In all cases, the MOCP for the
power exhaust should be 15 amps per NEC.
205
POWER SUPPLY
MCA MOCP FLA
40.4/ 40.4 45/ 45†† 40/ 40
57.4/ 59.9 60/ 60†† 56/ 58
67.8/ 72.0 70/ 80 65/ 69
82.0/ 88.5 90/ 90 78/ 84
95.3/103.5 100/110 90/ 98
109.4/120.1 110/125 103/113
42.1/ 42.1 45/ 45†† 42/ 42
59.1/ 61.6 60/ 70 58/ 60
69.5/ 73.7 70/ 80 67/ 71
83.7/ 90.2 90/100 80/ 86
97.0/105.2 100/110 92/100
111.1/121.8 125/125 105/115
19.7 20†† 19
28.7 30†† 28
37.0 40†† 35
40.7 45†† 39
54.4 60†† 51
58.1 60†† 55
20.5 25†† 20
29.5 30†† 29
37.8 40†† 36
41.5 45†† 40
55.2 60†† 52
58.9 60†† 56
15.8 20†† 16
16.4 20†† 16
7
457
= 1.53%
MCA MCA MCA
(230 v) (460 v) (575 v)
N/A 0.68 N/A
3.4 N/A 1.32
N/A 1.4 N/A
1.7 N/A 0.68
N/A 0.7 N/A
1.6 N/A 0.64
DISCONNECT
SIZE†
LRA
195/195
208/211
217/220
228/233***
239/245***
250/259***
214/214
227/229
236/239
247/252***
258/264***
269/278***
97
104
111
114
125
128
107
114
121
124
134
137
78
85
MOCP
(for separate
power source)
15
15
15
15
15
15
69