YLAA Engineering Guide, 180 - Johnson Controls Inc.
YLAA Engineering Guide, 180 - Johnson Controls Inc.
YLAA Engineering Guide, 180 - Johnson Controls Inc.
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User Control Wiring<br />
A-<br />
A+<br />
14<br />
13<br />
50<br />
13<br />
21<br />
13<br />
20<br />
13<br />
19<br />
13<br />
18<br />
13<br />
51<br />
13<br />
XTBC1<br />
Normally jumpered.<br />
Can be used as<br />
EMERGENCY STOP<br />
contacts from an<br />
external source.<br />
140<br />
123<br />
32<br />
31<br />
30<br />
29<br />
28<br />
27<br />
26<br />
25<br />
24<br />
23<br />
5<br />
L<br />
2<br />
2<br />
2<br />
GND<br />
XTBC2<br />
USER CONTROL WIRING INPUTS<br />
FORM 150.72-EG8 (512)<br />
INTERNAL WIRING TO OPTIONAL REMOTE TEMP. RESET BOARD<br />
FLOW SWITCH<br />
REMOTE UNLOAD STEP 1<br />
PWM REMOTE TEMP RESET<br />
INTERNAL WIRING TO 2-KCR CONTROL RELAY<br />
INTERNAL WIRING TO 1-KCR CONTROL RELAY<br />
REMOTE START / STOP<br />
USER CONTROL WIRING OUTPUTS<br />
INTERNAL WIRING TO EVAPORATOR HEATER<br />
INTERNAL WIRING TO HOT GAS SOLENOID VALVE<br />
SYSTEM 2 ALARM DRY CONTACTS (OPEN = ALARM)<br />
SYSTEM 1 ALARM DRY CONTACTS (OPEN = ALARM)<br />
SYSTEM 2 RUN DRY CONTACTS (CLOSE = RUN)<br />
SYSTEM 1 RUN DRY CONTACTS (CLOSE = RUN)<br />
EVAPORATOR PUMP DRY CONTACTS (CLOSE = RUN<br />
BASED ON DAILY SCHEDULE)<br />
INTERNAL 120 VAC WIRING TO F1 FUSE<br />
INTERNAL 120 VAC WIRING (TYPICALLY FROM CONTROL TRANSFORMER)<br />
INTERNAL NEUTRAL WIRING<br />
INTERNAL NEUTRAL WIRING (TYPICALLY FROM CONTROL TRANSFORMER)<br />
INTERNAL NEUTRAL WIRING<br />
28 JOHNSON CONTROLS
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