Carrier Aquazone 50PTH024 Installation, Start-Up And Service Instructions Manual page 22

STANDARD COMPONENTS LEGEND
AUX — Auxiliary Relay (For Loop Pump, Etc.)
BM — Blower Motor
CAP — Compressor Capacitor
CBR — 24V Circuit Breaker
CC — Compressor Contactor
CS — Condensate Sensor (In Drain Pan)
EMS — Energy Management System Relay
FS — Freeze Sensor
HPS — High Pressure Switch
LED — Unit Status LED
LPS — Low Pressure Switch
RV — Reversing Valve (Heat Pumps)
OPTIONAL COMPONENTS LEGEND
[ ] DS — Disconnect Switch
[ ] F/A — Fire Alarm Relay Contacts
Heat recovery Package,
[ ] HRP —
Includes:
HRPM — Heat Recovery Pump
HWL — Hot Water Limit
LGL — Low Gas Temp Limit
ON/Off Switch Overload
SWT —
Protection
High Temp Suction Limit
[ ] HSL —
(With Hot Gas Bypass Only)
[ ] LWV — Leaving Water Valve
[ ] VES — Valve End Switch
Second Stage Solenoid
[ ] Y2S —
(Shifts Comp To Full Capacity)
Fig. 20 — Constant Airflow ECM Motor, Single-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 operation.
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 terminal; 24VAC
will be sensed on the ALR-OUT when the unit is in alarm condition. Output will be pulsed if pulse is selected.
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