Honeywell Design and Application User Manual

Section 8- W6215, W7215 And W7460 Economizer Modules
63-8594-02 Honeywell Economizers 78
W6215, W7215 and W7460 Wiring Diagram
W7215A used in single-stage cooling system with single
enthalpy changeover and Honeywell Series 72 Actuator
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
ACTUATOR SPRING-RETURNS CLOSED WHEN FAN IS NOT RUNNING.
ENSURE THAT TRANSFORMER IS SIZED TO HANDLE THE EXTRA
LOAD OF THE ECONOMIZER AND ACTUATOR.
1S IS AN ELECTRONIC SWITCH THAT CLOSES WHEN POWERED
BY A 24 VAC INPUT.
FOR THE ML7295A,C, USE THE 4-20mA MODEL ACTUATOR. THESE
MODELS HAVE 500 OHM INPUT IMPEDENCE THAT ALLOWS THE
ACTUATOR TO ACCEPT A 2-10 VDC SIGNAL.
M11804B
P1
P
T1
1
3
4
2
5
2K
S
1
2
3
3
4
TR
TR1
S
O
S
R
+
+
W7215A
+
1K
4
5
T
6
6
7
8
9
9
9
5
1S
1S1
C7150B
MIXED AIR
OR C7046A
DISCHARGE
AIR SENSOR
MINIMUM POSITION
ADJUSTMENT
MAXIMUM
POSITION
ADJUSTMENT
Q1
Q
AQ1
AQ
SD1
AC1
PG1
SD
AC
PG
FREE
COOL
UNIT
CONTROL
EXHAUST
FAN
INDOOR
FAN
FACTORY INSTALLED 620 OHM, 1 WATT, 5% RESISTOR SHOULD NOT BE
REMOVED. DIFFERENTIAL ENTHALPY NOT RECOMMENDED FOR USE
WITH SINGLE-STAGE COOLING SYSTEMS OR SINGLE-STAGE COOLING
THERMOSTATS.
FOR T7300 ONLY.
FOR T7300, USE CONTACTS A1 AND A2 INSTEAD OF THE TIMER.
FOR TWO-STAGE COMMERCIAL THERMOSTATS ONLY.
+
–
2-10 VDC
INDOOR
AIR SENSOR
SHUT DOWN
PURGE
AIR CHANGE
C7400
OUTDOOR
AIR
ENTHALPY
SENSOR
UNOCCUPIED
ST6008
TIMER
L1
(HOT)
L2
FDR
FDR
FAN
HEAT 1
HEAT 2
COOL 1
HVAC EQUIPMENT
TERMINAL STRIP
T7300 OR T874
THERMOSTAT
1
C
G
W1
Y1
R
W2
RC
RH
G
X
W1
Y1
Y2
W2
OCCUPIED
7
8
2
24 VAC HOT
24 VAC COM
FAN
DELAY
RELAY
W
R
T6031 AMBIENT
LOCKOUT
CONTROL
50 F SETPOINT
2-10 VDC
OUT
+
+
––
HONEYWELL
SERIES 72
ACTUATOR
(ML7275,
ML7285,
ML7295A,C
M7275,
M7285)
620 OHM
RESISTOR

Honeywell Design and Application Specifications

General

Brand	Honeywell
Model	Design and Application
Category	Controller
Language	English