
W6215, W7215, W7460 ECONOMIZER LOGIC MODULES
63-2544—3
24
Fig. 23. W7215A controlling parallel-wired Honeywell Series 72 Modutrol Motors.
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
ACTUATOR SPRING-RETURNS CLOSED WHEN FAN IS NOT RUNNING.
FOR T7300, USE CONTACTS A1 AND A2 INSTEAD OF THE TIMER.
1S IS AN ELECTRONIC SWITCH THAT CLOSES WHEN POWERED
BY A 24 VAC INPUT.
M11794A
P1
P
T1
1
3
4
2
5
2K
S
1
2
3
4
TR
TR1
SO
SR
+
+
W7215A
+
6
1K
4
5
T
6
1S
1S1
C7150B MIXED
AIR OR
C7046A
DISCHARGE
AIR SENSOR
620 OHM
RESISTOR
24 VAC HOT
24 VAC COM
MINIMUM POSITION
ADJUSTMENT
MAXIMUM
POSITION
ADJUSTMENT
Q1
Q
AQ1
AQ
SD1
AC1
PG1
SD
AC
PG
FREE
COOL
UNIT
CONTROL
EXHAUST
FAN
INDOOR
FAN
FOR T7300 ONLY.
FACTORY INSTALLED 620 OHM, 1 WATT, 5% RESISTOR SHOULD BE
REMOVED ONLY WHEN A C7400 ENTHALPY SENSOR IS ADDED TO
SR AND + FOR DIFFERENTIAL ENTHALPY.
+
–
2-10 VDC
INDOOR
AIR SENSOR
SHUT DOWN
PURGE
AIR CHANGE
2-10V
OUT
+
+
+
–
–
–
C7400
OUTDOOR
AIR
ENTHALPY
SENSOR
UNOCCUPIED
ST6008
TIMER
1
MOD MOTOR
SERIES 72
MOD MOTOR
SERIES 72
L1
(HOT)
L2
FDR
FDR
FAN
HEAT 1
HEAT 2
COOL 1
COOL 2
HVAC EQUIPMENT
TERMINAL STRIP
T7300 OR T874
THERMOSTAT
1
C
G
W1
Y1
Y2
R
W2
RC
G
X
W1
RH
Y1
Y2
W2
OCCUPIED
5
3
2
T1
T1
T2
T2