Honeywell Design and Application Technical Reference Manual page 86

Section 8- W6215, W7215 And W7460 Economizer Modules
M7415
TR1
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED. M7415 MOTOR
MUST USE AN INDEPENDENT TRANSFORMER.
2
ACTUATOR SPRING-RETURNS CLOSED WHEN FAN
IS NOT RUNNING.
3
1S IS AN ELECTRONIC SWITCH THAT CLOSES WHEN
POWERED BY A 24 VAC INPUT.
4 FOR T7300, USE CONTACTS A1 AND A2 INSTEAD OF
THE TIMER.
5 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.
6 FOR T7300 ONLY.
W7460A used in two-stage cooling system with M7415 Motors
63-8594-02 Honeywell Economizers
W7460A
+
P1
M7415
OUT
Ð
P
MINIMUM POSITION
TR
ADJUSTMENT
FREE
COOL
1
L2
L1
(HOT)
UNIT
CONTROL
EXHAUST
FAN
INDOOR
FAN
TR1
TR
S O
+
+
S R
5
1K
2
1S
1
4
3
3
2K
T1
T
1S1
P P1
Q1
Q
MAXIMUM
POSITION
AQ
ADJUSTMENT
AQ1
SD
SD1
AC
AC1
PG
PG1
6
C
Y1
Y1
Y2
Y2
W2
W2
W1
W1
G
FDR
RH
G
RC
FDR
R
X
T7300 OR T874 HVAC EQUIPMENT
THERMOSTAT
TERMINAL STRIP
80
C7400
OUTDOOR
+
AIR
ENTHALPY
S
SENSOR
620 OHM
5
RESISTOR
C7150B
MIXED AIR
OR C7046A
DISCHARGE
AIR SENSOR
T6031 AMBIENT
W
LOCKOUT
CONTROL
R
50 F SETPOINT
_
2-10 VDC
INDOOR
+
AIR SENSOR
SHUT DOWN
AIR CHANGE
PURGE
UNOCCUPIED
4
ST6008
TIMER
OCCUPIED
COOL 1
COOL 2
HEAT 2
HEAT 1
FAN
DELAY
RELAY
FAN
1
L2
2
L1
(HOT)
M11802C