Honeywell W6215 Series Product Data page 13

HONEYWELL
SERIES 72
ACTUATOR
(ML7275,
ML7285,
ML7295A,C
M7275,
M7285)
+
–
5
T775 THERMOSTAT
NC
COM
NO
NO
COM
NC
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
2
ACTUATOR SPRING-RETURNS CLOSED WHEN FAN IS NOT RUNNING.
3
ENSURE THAT EQUIPMENT TRANSFORMER IS SIZED TO HANDLE
THE EXTRA LOAD OF THE ECONOMIZER AND ACTUATOR.
1S IS AN ELECTRONIC SWITCH THAT CLOSES WHEN POWERED
4
BY A 24 VAC INPUT.
Fig. 12. W7215A used with T775 Controller and Honeywell Series 72 Actuator.
W7215A
24 VAC HOT
24 VAC COM
1K
1S
4
2K
+
2-10V
OUT
1S1
–
MINIMUM POSITION
ADJUSTMENT
FREE
COOL
MAXIMUM
POSITION
ADJUSTMENT
UNIT
CONTROL
EXHAUST
FAN
INDOOR
FAN
7
W
R
NC
COM
NO
W6215, W7215, W7460 ECONOMIZER LOGIC MODULES
TR1
TR
+
S O
+
S R 620 OHM
RESISTOR
6
5
2
1
4
3
C7150B MIXED
AIR OR
T1
T C7046A
DISCHARGE
AIR SENSOR
P1
P
Q1
Q
–
2-10 VDC
AQ
AQ1
INDOOR
+
AIR SENSOR
SD
SD1
SHUT DOWN
AC
AC1
AIR CHANGE
PG
PG1
PURGE
C
Y1
Y2
T6031 AMBIENT
LOCKOUT
CONTROL
50° F SETPOINT
G
R
HVAC EQUIPMENT
TERMINAL STRIP
5
FOR THE ML7295A,C, USE THE 4-20 MA MODEL ACTUATOR. THESE MODELS
HAVE 500 OHM INPUT IMPEDENCE THAT ALLOWS THE ACTUATOR TO ACCEPT
A 2-10 VDC SIGNAL.
6 FACTORY INSTALLED 620 OHM, 1 WATT, 5% RESISTOR SHOULD BE REMOVED
ONLY WHEN A C7400 ENTHALPY SENSOR IS ADDED TO S R AND + FOR
DIFFERENTIAL ENTHALPY.
T775 REQUIRES A MINIMUM OF THREE RELAY OUTPUTS: TWO FOR COOLING
7
AND ONE FOR FAN CONTROL. A MAXIMUM ONE STAGE OF HEATING IS
POSSIBLE WHEN THE SYSTEM IS WIRED IN THIS FASHION.
13
C7400
S
OUTDOOR
AIR
ENTHALPY
+
SENSOR
COOL 1
COOL 2
UNOCCUPIED
ST6008
TIMER
OCCUPIED
2
FAN
L2
L1
(HOT)
3
1
M11792A
63-2544—3