Honeywell T775A - Two-Stage Control, 24 Vac Input, 24 Vac Load

13 63-2489
T775A,B,C,D
CHECKOUT
Fig. 11—Two-stage control, 24 Vac input, 24 Vac load.
COOL MODE
HEAT MODE
RELAY 1 AND 2
ENERGIZED
RELAY 1 AND 2
ENERGIZED
NULL
NULL
RELAY 1 ENERGIZED
RELAY 1 ENERGIZED
TEMPERATURE
FALL
DIFFERENTIAL
2
TEMPERATURE
FALL
DIFFERENTIAL
#1
TEMPERATURE
RISE
TEMPERATURE
RISE
SETPOINT 1
DIFFERENTIAL
1
DIFFERENTIAL
#2
SETPOINT 2
SETPOINT 2
SETPOINT 1
SENSOR
LOAD 2
24 VAC
DIP SWITCHES
FOR SENSOR
SELECTION.
PRESENT ON
T775B, D ONLY
SENSOR B
to pins 7 AND 8
for T775B, D
LOAD 1
SELECT
SET
ENTER
12
3
4
1
2
3
4
SA SB
C \ F
SENSOR
A
TOD
24V
5
6
120V
COM
240V
OUTPUT 2
OUTPUT 1
NC
COM
NO
NC
COM
NO
7 8
M7421