Power Supply - Carrier 38APS025-065 Installation Instructions Manual

LEGEND
EQUIP GND — Equipment Ground
NEC —
National Electrical Code
NOTES:
1. Factory wiring is in accordance with UL 1995 standards. Field modifications
or additions must be in compliance with all applicable codes.
2. All units or modules have single point primary power connection. Main
power must be supplied from a field or factory-supplied disconnect.
3. Wiring for main field supply must be rated 75 C. Use copper conductors only.
a. Incoming wire size range for terminal block with MCA (minimum circuit
amps) up to 175 amps is 14 AWG (American Wire Gage) to 2/0.
b. Incoming wire size range for terminal block with MCA from 175.1 amps to
420 amps is 2 AWG to 600 kcmil.
a38-7133
LEGEND
FS1 — Fan Status Switch (24-v)
MAT — Mixed Air Temperature Sensor
RAT — Return Air Temperature Sensor
SAT — Supply Air Temperature Sensor
*FS1 can be pressure differential switch (shown), motor current detection, or sail switch.
Fig. 19 — Field Power Wiring
RETURN
AIR
MAT/RAT
OUTSIDE
AIR
EVAPORATOR
COIL
Fig. 20 — Sensor Layout
29
a38-7122
c. Incoming wire size range for non-fused disconnect with MCA up to
100 amps is 14 AWG to 1/0.
d. Incoming wire size range for non-fused disconnect with MCA from
100.1 amps to 200 amps is 6 AWG to 350 kcmil.
e. Incoming wire size range for non-fused disconnect with MCA from
200.1 amps to 450 amps is 3/0 to 500 kcmil.
4. Terminals 1 and 2 of the LVT are for the alarm relay. The maximum load
allowed for the alarm relay is 5 va sealed and 10 va inrush at 24 v. Field
power supply is not required.
5. Refer to certified dimensional drawings for exact locations of the main power
and control power entrance locations.
6. Terminals 24, 25, and 2 of the LVT are for control of the field-supplied LLSV.
The maximum load allowed for each LLSV is 15 va sealed and 30 va inrush
at 24 v. Field power supply is not required.
7. All discrete inputs are 24 vac.
FS1* SAT
FAN
DUCT
SUPPLY