Honeywell W6215 Series Product Data page 15

24 VAC HOT
HONEYWELL
SERIES 72
24 VAC COM
ACTUATOR
(ML7275,
ML7285,
ML7295A,C
M7275,
M7285)
+
+
2-10V
OUT
– –
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. 14. W7215B used in two-stage cooling system with Honeywell Series 72 Actuator.
W7215B
TR
S O
S R
1K
1
1S
3
4
2K
T
1S1
P
MINIMUM POSITION
ADJUSTMENT
Q
FREE
MAXIMUM
COOL
POSITION
ADJUSTMENT
AQ1
ALARM AQ
UNIT
SD
SD1
CONTROL
EXHAUST
AC
AC1
FAN
INDOOR
OA
OA1
FAN
W6215, W7215, W7460 ECONOMIZER LOGIC MODULES
TR1
C7400
+
OUTDOOR
+
AIR
ENTHALPY
S
SENSOR
+
620 OHM
RESISTOR
6
5
2
4
C7150B MIXED
AIR OR
T1
C7046A
DISCHARGE
AIR SENSOR
P1
T6031 AMBIENT
LOCKOUT
CONTROL
50° F SETPOINT
Q1
–
2-10 VDC
INDOOR
+
AIR SENSOR
SHUT DOWN
AIR CHANGE
–
2-10 VDC
OUTDOOR
+
AIR SENSOR
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.
15
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
M11810A
63-2544—3