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100
APPENDIX D -- ADDITIONAL START--UP DATA
Table 60 — Air Quantity Limits (50PD Units)
UNIT
50PD
COOLING (cfm)
HEATING (cfm)
OPTIONAL ELECTRIC HEAT
05
1200
2000
1200
2000
06
1500
2500
1500
2500
Table 61 — Air Quantity Limits (48PD Units)
UNIT
48PD
COOLING (cfm)
HEATING (cfm)
Min
Max
Min
Max
05 (Low Heat)
1200
2000
600
1680
05 (Med Heat)
1200
2000
940
2810
05 (High Heat)
1200
2000
1130
2820
06 (Low Heat)
1500
2500
940
2810
06 (Med Heat)
1500
2500
1130
2820
06 (High Heat)
1500
2500
1510
2520
Table 62 — Evaporator Fan Motor Specifications - 48/50PD
48/50PD
DRIVE
VOLTAGE/PHASE
EFFICIENCY
MAX BHP
MAX AMPS
05 & 06
Low & High
208/230---3ph
0.80
2.0
6.4
460---3ph
0.80
2.0
3.2
NOTES:
1. Extensive motor and electrical testing ensures that the motors can be utilized
with confidence up to the maximum applied bhp, watts, and amps. Using the fan
motor up to the maximum ratings shown will not result in nuisance tripping or
premature motor failure. Unit warranty will not be affected.
2. Convert bhp to watts using the following formula:
watts =
bhp (746)
motor efficiency
3. The EPACT (Energy Policy Act of 1992) regulates energy requirements for
specific types of indoor-fan motors. Motors regulated by EPACT include any
general purpose, T-frame (three-digit, 143 and larger),
single-speed, foot
mounted, polyphase, squirrel cage induction motors of NEMA (National Electrical
Manufacturers Association) design A and B, manufactured for use in the United
States. Ranging from 1 to 200 Hp, these continuous-duty motors operate on 230
and 460 volt, 60 Hz power. If a motor does not fit into these specifications, the
motor does not have to be replaced by an EPACT-compliant energy-efficient motor.
Variable-speed motors are exempt from EPACT compliance requirements.
Therefore, the indoor-fan motors for Carrier 48/50PG03--14 units are exempt from
these requirements.
Table 63 — Fan Rpm at Motor Pulley Settings* - 48/50PD
UNIT
48/50PD
DRIVE
MOTOR PULLEY TURNS OPEN
0
1
/
2
1
1
1
/
2
2
2
1
/
2
3
3
1
/
2
4
4
1
/
2
5
05
Low
910
878
847
815
784
753
721
690
659
627
596
High
1173
1139
1104
1070
1035
1001
966
932
897
863
828
06
Low
978
949
920
891
863
834
805
776
748
719
690
High
1261
1227
1194
1161
1128
1095
1062
1028
995
962
929
*Approximate fan rpm shown, based on 1725 rpm motor.
NOTE: Factory speed setting is at 5 turns open.
Table 64 — Accessory/FIOP Pressure Drop (in. wg) - 48/50PD
AIRFLOW
(CFM)
ELECTRIC
HEAT
ECONOMIZER
(Vertical)
ECONOMIZER
(Horizontal)
600
0.01
0.01
0.03
800
0.01
0.01
0.05
1000
0.02
0.02
0.07
1200
0.02
0.03
0.10
1400
0.03
0.04
0.14
1600
0.04
0.06
0.17
1800
0.05
0.07
0.22
2000
0.07
0.09
0.26
2200
0.08
0.11
0.31
2400
0.10
0.13
0.37
2600
0.11
0.15
0.43
2800
0.13
0.18
0.49
3000
0.15
0.21
0.56
48/
50P
D