T775J ELECTRONIC REMOTE TEMPERATURE CONTROLLER
63-2248—4
15
•
4-20 mA: This is a general purpose current mode output that can drive a 600 ohm maximum load without output current
12
3
4
OPEN
A
C
B
D
12
3
4
OPEN
A
C
B
D
12
3
4
OPEN
A
C
B
D
12
3
4
OPEN
A
C
B
D
A. SWITCH 1 CONTROLS THE RESET DIRECTION.
LEFT RESETS SENSOR A CONTROL POINT (BOILER OR CHILLER WATER TEMPERATURE UP;
RIGHT RESETS IT DOWN.
B. SWITCH 2 CONTROLS THE RESET ACTION.
LEFT RESETS AS SENSOR B (OUTDOOR TEMPERATURE) DROPS BELOW SETPOINT B;
RIGHT RESETS AS IT RISES ABOVE IT.
C. SWITCHES 3 AND 4 ARE NOT USED.
RESETS CONTROL SETPOINT A DOWN
WHEN SENSOR B (OUTSIDE
TEMPERATURE) IS BELOW SETPOINT.
RESETS CONTROL SETPOINT A DOWN
WHEN SENSOR B (OUTSIDE
TEMPERATURE) IS ABOVE SETPOINT.
RESETS CONTROL SETPOINT A UP
WHEN SENSOR B (OUTSIDE
TEMPERATURE) IS BELOW SETPOINT.
RESETS CONTROL SETPOINT A UP
WHEN SENSOR B (OUTSIDE
TEMPERATURE) IS ABOVE SETPOINT.
SETPOINT "B" (OUTSIDE TEMPERATURE)
BELOW
ABOVE
UP
DOWN
M4719
RESET DIRECTION
SWITCH
RESET ACTION
SWITCH
RESET DIRECTION
SWITCH
RESET ACTION
SWITCH
RESET DIRECTION
SWITCH
RESET ACTION
SWITCH
RESET DIRECTION
SWITCH
RESET ACTION
SWITCH
