Honeywell JADE W7220 Installation Instructions And Operators Manual page 5

DISCHARGE
AIR SENSOR
C7400S
DIRECT
EXPANSION
COIL
Fig. 4. Location of Outdoor Air, Return Air, Mixed Air, and Discharge Air Sensors in an economizer system.
W7720A
RETURN AIR
C7400S
ENTHALPY
SENSOR
5
TWO STAGE COOL
PROGRAMMABLE
THERMOSTAT
C7250A
MIXED AIR
SENSOR
MS3103J
MS3105J
MS7505
ACTUATOR
1 FOR DIFFERENTIAL ENTHALPY, THE TWO C7400S ENTHALPY
SENSORS ARE CONNECTED TO THE W7720A ECONOMIZER
CONTROL ONE IS MOUNTED IN RETURN AIR, AND THE
OTHER IS MOUNTED IN OUTDOOR AIR. DIFFERENTIAL
ENTHALPY CONTROL PROVIDES GREATER ENERGY
1
SAVINGS THAN SINGLE ENTHALPY.
JADE™ ECONOMIZER MODULE
ENTHALPY
1 C7400S
SENSOR
OUTDOOR
AIR
M35163
63-2700—11