Carrier 50RHC Heat Pump User Manual


 
21
Wire Nut
Relay Contacts - N.C.
Relay Contacts - N.O.
Low Pressure Switch
High Pressure Switch
Splice Cap
Circuit Breaker
Fig. 21 — Typical Aquazone™ Complete C and LON Controller Wiring
NOTES:
1. Compressor and blower motor thermally protected internally.
2. All wiring to the unit must comply with NEC and local codes.
3. Transformer is wired to 460 v (BLK/RED) lead for 460/3/60 units, 575 v (GRY) lead for 575/3/60 units, or 380 v (VIO) lead for 380/3/50 units.
For 420/3/50 operation, switch VIO and BRN leads at L1 and insulate VIO lead. Transformer is energy limiting or may have circuit breaker.
4. FP1 thermistor provides freeze protection for water. When using antifreeze solutions, cut JW3 jumper.
5. Typical thermostat wiring shown. Refer to thermostat installation instructions for wiring to the unit. Thermostat wiring must be Class 1 and volt-
age rating equal to or greater than unit supply voltage.
6. Factory cut JW1 jumper. Dry contact will be available between AL1 and AL2.
7. Transformer secondary ground via Complete C board standoffs and screws to control box. (Ground available from top two standoffs as shown.)
8. Fan motors are factory wired for medium speed. For high or low speed, remove BLU wire from fan motor speed tap “M” and connect to “H” for
high speed or “L” for low speed.
9. For low speed, remove BLK wire from BR “6” and replace with RED. Connect BLK and BRN wires together.
10. Optional LON wires. Only connect if LON connection is desired at the wall sensor.
11. For blower motors with leads. For medium or low speed, diconnect BLK wire from BR “6”. Connect BLK and ORG/PUR wire together. Connect
RED for low or BLU for medium to BR “6”.
12. Blower motor is factory wired to medium speed. For low speed, remove BLU wire from medium tap and connect to low speed tap. For high
speed, remove BLU wire from existing speed tap and remove BRN jumperwire from high speed tap. Connect BLU wire to high speed tap. Tape
off unconnected end of BRN jumper.
*Optional wiring.
AL Alarm Relay Contacts
BM Blower Motor
BMC Blower Motor Capacitor
BR Blower Relay
CB Circuit Breaker
CC Compressor Contactor
CO Sensor, Condensate Overflow
COMPR Compressor
FP1 Sensor, Water Coil Freeze Protection
FP2 Sensor, Air Coil Freeze Protection
HP High-Pressure Switch
HPWS High Pressure Water Switch
JW1 Clippable Field Selection Jumper
LOC Loss of Charge Pressure Switch
LON Local Operating Network
MV Motorized Valve
NEC National Electrical Code
P1 Field Wiring Terminal Block
PB Power Block
RVS Reversing Valve Solenoid
TRANS Transformer
TXV Thermostatic Expansion Valve
Field Line Voltage Wiring
Field Low Voltage Wiring
Printed Circuit Trace
Optional Wiring
Relay/Contactor Coil
Condensate Pan
Solenoid Coil
Temperature Switch
Thermistor
Ground
LEGEND
a50-8153