Honeywell T775A User Manual

15 63-2489
T775A,B,C,D
CHECKOUT
Fig. 13—Four-stage control, 24 Vac input; 24 Vac load.
HEAT MODE
NULL
DIFFERENTIAL 3
TEMPERATURE
RISE
SETPOINT 3
RELAY 1,2 AND 3
ENERGIZED
DIFFERENTIAL 2
SETPOINT 2
RELAY 1 AND 2
ENERGIZED
DIFFERENTIAL 1
SETPOINT 1
RELAY 1 ENERGIZED
TEMPERATURE
FALL
COOL MODE
DIFFERENTIAL 2
TEMPERATURE
RISE
RELAY 1 AND 2
ENERGIZED
RELAY 1 ENERGIZED
DIFFERENTIAL 1
SETPOINT 2
SETPOINT 1
NULL
RELAY 1,2 AND 3
ENERGIZED
DIFFERENTIAL 3
SETPOINT 3
TEMPERATURE
FALL
N OTE: FOR THERMOSTAT APPLICATIONS, CONNECT NO CONTACT OF COOLING STAGE TO Y1 (AND SECOND STAGE TO Y2)
CONNECT NO CONTACT OF HEATING STAGE TO W1 (AND SECOND STAGE TO W2).
SENSOR A
LOAD 4
LOAD 3
LOAD 2
LOAD 1
DIP SWITCHES
FOR SENSOR
SELECTION.
PRESENT ON
T775B,D ONLY
SENSOR B
to pins 7 AND 8
for T775B,D
SELECT
SET
ENTER
12
3
4
1
2
3
4
SA SB
C \ F
SENSOR
A
SENSOR
B
TOD
24V
5
6
120V
COM
240V
OUTPUT 2
OUTPUT 1
OUTPUT 3
OUTPUT 4
NO
COM
NC
NO
COM
NC
NC
COM
NO
7
8
NC
COM
NO
24 VAC
M7425

Honeywell T775A Specifications

General

Brand	Honeywell
Model	T775A
Category	Temperature Controller
Language	English