Carrier Aquazone 50PEC09-18 Installation, Start-Up And Service Instructions Manual page 8

OPTIONAL WIRING
STANDARD COMPONENTS:
DATS - DISCHARGE AIR TEMP SENSOR
LWTS - LEAVING WATER TEMP SENSOR
1
J1-9 USED TO CONNECT FIRE ALARM RELAY OR PHASE MONITOR OPTIONS
FACTORY JUMPER IS INSTALLED ON J5-5 AND J5-6 IF CONDENSATE FLOAT
2
SWITCH (NC) IS NOT PRESENT
FOR 2-STAGE UNITS, CONNECT CMR CONN ACROSS PINS 4 AND 6 OF CMR1
3
WITH SIGNAL CMR-4 GOING TO PIN 4 AND SIGNAL CMR-2 GOING TO PIN 6.
UNIT TERMINAL BLOCK (TB1) CLASS II VOLTAGE
Fig. 4 — Open DDC Wiring Diagram
1
2
3