Honeywell W6215 Series Product Data page 12

W6215, W7215, W7460 ECONOMIZER LOGIC MODULES
HONEYWELL
SERIES 72
ACTUATOR
(ML7275,
ML7285,
ML7295A,C
M7275,
M7285)
+
–
5
Y1
Y2
W2
W1
G
RH
RC
7
X
T7300 OR T874
THERMOSTAT
1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
2
ACTUATOR SPRING-RETURNS CLOSED WHEN FAN IS NOT RUNNING.
3
ENSURE THAT 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. 11. W7215A used in two-stage cooling system with Honeywell Series 72 Actuator.
63-2544—3
W7215A
24 VAC HOT
24 VAC COM
1K
1S
4
2K
+
2-10V
OUT
1S1
–
MINIMUM POSITION
ADJUSTMENT
FREE
MAXIMUM
COOL
POSITION
ADJUSTMENT
UNIT
CONTROL
EXHAUST
FAN
INDOOR
FAN
TR1
TR
S O
+
620 OHM
S R
+
RESISTOR
6
5
2
1
4
3
C7150B MIXED
AIR OR
C7046A
T1
T
DISCHARGE
AIR SENSOR
P1
P
T6031 AMBIENT
LOCKOUT
CONTROL
Q1 50° F SETPOINT
Q
–
2-10 VDC
AQ
AQ1
INDOOR
+
AIR SENSOR
SD
SD1
SHUT DOWN
AC
AC1
AIR CHANGE
PG
PG1
PURGE
C
Y1
Y2
W2
W1
FDR
G
FDR
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.
7
FOR T7300 ONLY.
8
FOR T7300, USE CONTACTS A1 AND A2 INSTEAD OF THE TIMER.
12
C7400
+
OUTDOOR
AIR
ENTHALPY
S
SENSOR
W
R
UNOCCUPIED
ST6008
TIMER
OCCUPIED
COOL 1
COOL 2
HEAT 2
HEAT 1
FAN
DELAY
RELAY
FAN
3
L2
2
L1
(HOT)
8
1
M11801A