Carrier Aquazone 50PTH024 Installation, Start-Up And Service Instructions Manual page 27

STANDARD COMPONENTS LEGEND
AUX — Auxiliary Relay (For Loop Pump, Etc.)
BM — Blower Motor
CBR — 24V Circuit Breaker
CC — Compressor Contactor
COMP — Compressor
CS — Condensate Sensor (In Drain Pan)
FS — Freeze Sensor
HPS — High Pressure Switch
LED — Unit Status LED
LPS — Low Pressure Switch
RV — Reversing Valve (Heat Pumps)
Y2R — Second Stage Relay
Y2S — Second Step Relay
OPTIONAL COMPONENTS LEGEND
[ ] DS — Disconnect Switch
[ ] LWV — Leaving Water Valve
[ ] MVR — Motorized Valve Relay
[ ] MBV — Motorized Ball Valve
[ ] PM — Phase Monitor
Main Terminal Block
[ ] TB2 —
(460-v Units Only)
Terminal Block Disconnect
[ ] TB3 —
Switch (460-v Units only)
[ ] VES — Valve End Switch
Fig. 25 — Constant Torque ECM Motor, Three-Phase/Single-Stage, Two-Step, WSHP Open Control
UPM STATUS LED — BLINK CODES
1 High Pressure Fault
2 Low Pressure Fault
3 Condenser Freeze Condition
4 Condensate Overflow Fault
5 Brown Out Fault
6 Evaporator Freeze Condition
Factory Wiring
Field Wiring
NOTES:
1. See unit name plate for electrical rating.
2. All field wiring must be in accordance with NEC-NFPA #70, copper conductors only - Conducteurs
en cuivre seulement.
3. 208/230-v units are factory wired for 230-v operation. For 208-v operation. Remove lead from 240
terminal and connect it to 208. Cap all unused terminals.
4. For alternate EMS coil voltages consult factory.
5. UPM-I includes built in:
270-300 second random start
300 second delay on break
120 second low pressure bypass.
6. "TEST" dip switch reduces delays to 10 sec when set to yes. must be set to "no" for normal opera-
tion.
7. "FREEZE SENSOR" on condenser will operate at 26°F by default; if 15°F operation is required,
Jumper R30 must be cut. If FREEZE SENSOR is not installed, a jumper shall be installed between
the FREEZE1 or FREEZE2 sensor terminals.
8. "ALARM OUTPUT" dip switch must be set to "PULSE" if blinking T-STAT service light is desired.
9. Default settings for UPM board from factory shown. Also see installation manual.
10. Alarm output is normally open (no) dry contact. if 24 VAC is needed, connect R to ALR-COM termi-
nal; 24VAC will be sensed on the ALR-OUT when the unit is in alarm condition. Output will be pulsed
if pulse is selected.
11. Factory mounted loop pump or two way water valve. Both devices will not be present in the same
unit.
12. Pump motor is wired between line and neutral for 380-460VAC units. For 208/230VAC units pump
motor is wired between lines.
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