Installation guide

38QRF
UNIT
SIZE
V-PH-Hz
VOLTAGE RANGE*
Table 2 - 38QRF Electrical Data
Min Max
187 253
187 253
187 253
187 253
187 253
414 506
187 253
187 253
414 506
COMPRESSOR OUTDOOR FAN MOTOR
RLA LRA
9.0 48.0
12.8 58.3
14.1 73.0
16.7 79.0
10.4 79.0
5.8 79.0
17.9 112.0
13.2 88.0
6.0 44.0
MIN CKT
AMPS
FLA
0.80
0.80
1.50
1.50
1.50
0.80
1.45
1.45
0.80
NEC Hp
0.125
0.125
0.25
0.25
0.25
0.25
0.25
0.25
0.25
kW Out
0.09
0.09
0.19
0.19
0.19
0.19
0.19
0.19
0.19
018 208/230-1-60 12.1
024 208/230-1-60 16.8
030 208/230-1-60 18.4
208/230-1-60 22.3
035 208/230-3 -60 14.5
460-3 -60 8.7
208/230-1-60 23.8
036 208/230-3 -60 18.0
460-3 -60 8.3
FUSE/
HACR
BKR
AMPS
2O
25
3O
35
2O
15
4O
3O
15
LEGEND:
FLA - Full Load Amps
LRA - Locked Rotor Amps
NEC- National Electrical Code
RLA - Rated Load Amps (compressor)
* Permissible limits of the voltage range at which the unit will operate
satisfactorily
NOTES:
1. Control circuit is 24-V on all units and requires external power
source. Copper wire must be used from service disconnect to unit.
2. All motors/compressors contain internal overload protection.
3. In compliance with NEC (U.S.A. Standard) requirements for multi-
motor and combination load equipment (refer to NEC Articles 430
and 440), the overcurrent protective device for the unit shall be fuse.
4. Motor RLA values are established in accordance with UL (Underwrit-
ers' Laboratories) Standard 465 (U.S,A, Standard).
5. 38QRF018-030 units are only available in single-phase voltage.
6. 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-
age of voltage imbalance:
= 100 X max voltaae deviation from averaae voltaae
average
EXAMPLE: Supply voltage is 460-3-60
A 8 C AB = 452v
M_OTO_j_R BC = 464v
AC = 455v
Average Voltage = 452 + 464 + 455
3
= 1371
3
Determine maximum deviation from average voltage:
(AB) 457-452 = 5v
(BC) 464-457 = 7v
(AC) 457-455 = 2v
Maximum deviation is 7v.
Determine percentage of voltage imbalance
7
% of voltage imbalance = 100 x 5-_"
= 1.53%
This amount of phase imbalance is satisfactory as it is below the maximum
allowable of 2%.
IMPORTANT: Contact your local electric utility company immediately if the
supply voltage phase imbalance is more than 2%.
0Q.s
= 457