Honeywell T7200 - Page 35

35 63-4038—7
T7200/T7300/Q7300
WIRING DIAGRAMS
+
TR
TR1
SO
SR
+
5
+
S
1
2
3
TT1
P
P1
MINIMUM POSITION
ADJUSTMENT
1S1
4
1K
2K
18
T
T1
P1
P
MIXED AIR SENSOR
MINIMUM POSITION
TR
TR1
24 VAC
M7415 ACTUATOR
W7459A ECONOMIZER PACKAGE
C7150B MIXED
OR DISCHARGE
AIR SENSOR
ENTHALPY
SENSOR
C7400
620 OHM
RESISTOR
G
L1
(HOT)
L2
1
COOL 1
HEAT 2
HEAT 1
FAN
T7300/Q7300
A1
A2
W
R
X
Y1
Y2
W2
W1
RH
RC
Y1
W2
W1
G
HVAC EQUIPMENT
TERMINAL STRIP
C
T6301 AMBIENT
LOCKOUT
CONTROL
M7415
TR
TR1
T1
P1
P
24 VAC
SENSOR
MIN
POS
T
6
2
3
4
5
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTIONS AS REQUIRED. 24 VAC SECONDARY.
ASSURE THAT EQUIPMENT TRANSFORMER IS SIZED TO HANDLE THE EXTRA LOAD OF THE ECONOMIZER, ACTUATOR AND T7300/Q7300.
1S, AN ELECTRONIC SWITCH THAT CLOSES WHEN POWERED BY A 24 VAC INPUT.
RELAYS 1K AND 2K ACTUATE WHEN THE ENTHALPY SENSED BY THE C7400 IS HIGHER THAN THE ENTHALPY SETPOINT A-D.
FACTORY INSTALLED 620 OHM, 1 WATT, 5% RESISTOR SHOULD BE REMOVED ONLY IF C7400 ENTHALPY SENSOR IS ADDED
TO SR AND + FOR DIFFERENTIAL ENTHALPY.
FIELD INSTALLED JUMPER.
1
2
3
4
5
6
M4394
R
Fig. 37—T7300/Q7300 with economizer package in 1-stage cool system defeating economizer minimum
position during unoccupied period with single enthalpy changeover using W7459A/C7400 with M7415
Actuator.