Honeywell R7426B Product Data page 4

R7426A,B,C TEMPERATURE CONTROLLER
UNOCCUPIED
MAIN
TEMPERATURE
SENSOR
IO1
OCCUPIED
+
CPA/SPA
1 2 3
R7426A
15 16 17
L1
1
L2
MAIN
UNOCCUPIED
TEMPERATURE
SENSOR
IO1
OCCUPIED
+
CPA/SPA
1 2 3 4
R7426B
15 16 17 18
L1
1
L2
63-2564—1
LIMIT OR
CASCADE COMPENSATION
SENSOR SENSOR
IO3
IO2
+ +
4 5 6 7 8
O1
CLOSE OPEN
OUT OUT
18 19 20 21 22
HONEYWELL
1
SERIES 61
ACTUATOR
Fig. 2. R7426A typical wiring.
LIMIT OR
CASCADE COMPENSATION
SENSOR SENSOR
IO3
IO2
+ +
5 6 7 8
O1
CLOSE OPEN
OUT OUT
19 20 21 22
HONEYWELL
SERIES 61
ACTUATOR
4
Fig. 3. R7426B typical wiring.
FREEZE
PROTECTION
OFF ALARM
NORMAL
ON
2
9 10 11 12 13
23 24 25 26 27
FREEZE
PROTECTION
ALARM
OFF
ON NORMAL
2
9 10 11 12 13
O2
CLOSE OPEN CLOSE OPEN
OUT OUT OUT OUT
23 24 25 26 27
HONEYWELL HONEYWELL
SERIES 61 SERIES 61
ACTUATOR ACTUATOR
4
3
14
1
POWER SUPPLY. PROVIDE DISCONNECT
MEANS AND OVERLOAD PROTECTION
AS REQUIRED.
2 TERMINALS 9 AND 10 ARE THE 24V
DIGITAL (FAN, PUMP) OUTPUT.
3
TERMINALS 13 AND 14 ARE A SERIAL
28
INTERFACE FOR A PANEL BUS.
4 SPRING RETURN ACTUATORS ONLY.
3
14
1
POWER SUPPLY. PROVIDE DISCONNECT
MEANS AND OVERLOAD PROTECTION
O3
AS REQUIRED.
2 TERMINALS 9 AND 10 ARE THE 24V
DIGITAL (FAN, PUMP) OUTPUT.
TERMINALS 13 AND 14 ARE A SERIAL
3
INTERFACE FOR A PANEL BUS.
28
4
SPRING RETURN ACTUATORS ONLY. T
ERMINAL CONNECTIONS 21, 24 AND 27 CAN
BE ELIMINATED IF L1 IS WIRED DIRECTLY
TO THE ACTUATOR.
M17443A
M21039A