Honeywell C7046C Product Data

SOLID STATE ECONOMIZER SYSTEM
63-2484—1
9
Fig. 10. M8405A Damper Actuator used in two-stage cooling system with differential enthalpy
changeover and W7459C Economizer.
L1
(HOT)
L2
M8405
T
D
APPLY
24VAC T-X
FOR MIN POSN
T-D FOR
MAX POSN
FDR
FDR
FAN
FAN
DELAY
RELAY
HEAT 1
HEAT 2
COOL 1
COOL 2
HVAC EQUIPMENT
TERMINAL STRIP
W
R
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
MOTOR SPRING-RETURNS CLOSED WHEN FAN IS NOT RUNNING.
ASSURE THAT EQUIPMENT TRANSFORMER IS SIZED FOR THE EXTRA LOAD OF THE ECONOMIZER AND ACTUATOR.
RELAYS 1K AND 2K ACTUATE WHEN THE ENTHALPY SENSED BY THE C7400 IS HIGHER THAN THE ENTHALPY SETPOINT A-D.
FACTORY INSTALLED 620 OHM, 1 WATT, 5% RESISTOR SHOULD BE REMOVED ONLY IF A C7400 ENTHALPY SENSOR
IS ADDED TO S
R
AND + FOR DIFFERENTIAL ENTHALPY.
M3865A
T7300 OR T874
THERMOSTAT
X
D
D
6
X
1
3
4
2
2K
S
OUTDOOR
SENSOR
1
1
2
3
4
TR TR1
SO
SR
+
+
T
M8405 ACTUATOR
W7459C ECONOMIZER PACKAGE
+
C
G
W1
Y1
Y2
R
W2
W
R
S
RETURN
SENSOR
+
RC
G
W1
Y1
Y2
W2
RH
T675/T6031 MIXED
AIR CONTROL
55° F SETPOINT
T6031 AMBIENT
LOCKOUT CONTROL
50° F SETPOINT
C7400
C7400
UNOCCUPIED
OCCUPIED
S6005
TIMER
3
2
5
1K
4
5
MAX
SW
SET
MIN
X

Honeywell C7046C Specifications

General

Brand	Honeywell
Model	C7046C
Category	Control Systems
Language	English