Carrier 50PEC09-18 - Manual (Page 22)

22
Fig. 21 — 50PEC Unit Remote-Mounted Thermostat with Complete C Controller Wiring
Complete C
Complete C
AL — Alarm Relay Contacts
BM — Blower Motor
BR — Blower Relay
CAP — Capacitor
CB — Circuit Breaker
CO — Sensor, Condensate Overflow
CR — Compressor Relay
DM — Damper Motor
ES — End Switch
FP1 — Sensor, Water Coil Freeze Protection
FP2 — Sensor, Air Coil Freeze Protection
FSS — Fan Speed Switch
HPS — High-Pressure Switch
HPWS — High-Pressure Water Switch
JW1 — Jumper Wire for Alarm
LOC — Loss of Charge Pressure Switch
PDB — Power Distribution Block
RVS — Reversing Valve Solenoid
TRANS — Transformer
WV — Water Valve
---------- Field Line Voltage Wiring
Field Low-Voltage Wiring
LEGEND
Printed Circuit Trace
Option Low Voltage
Wiring
Relay/Contactor Coil
Solenoid Coil
Thermistor
Circuit Breaker
Relay Contacts-N.O.
Switch-High Pressure
Switch-Low Pressure
Ground
Wire Nut
Mate-N-Lock
>>
*Optional wiring.
NOTES:
1. Compressor and blower motor thermally pro-
tected internally.
2. All wiring to the unit must comply with local
codes.
3. Transformer is wired to 240-V (ORG) lead for
240-1-50 units. For 220-1-50 operation, switch
the RED and ORG leads at L1 and insulate the
RED lead. Transformer is energy limiting or may
have a circuit breaker.
4. FP1 thermistor provides freeze protection for
water. When using anti-freeze solutions, cut
JW3 jumper.
5. Low voltage wiring must be class 1 and voltage
rated equal or greater than unit supply voltage.
6. Factory cut jumper (JW1). Dry contact will be
available between AL1 and AL2.
7. Transformer secondary ground via GRN/YEL
wire from C to control box.
8. See view A for wiring of units with water valve
(part no. 23B00112N01) or view B for units with
water valve (part no. 23B00112N03).