Section 3 - Types of Analog Economizers
63-8594-02 Honeywell Economizers 36
W7212, W7213 and W7214
The W7212 DCV economizer logic module
was the simplest Demand Control Ventilation
economizer model. It combined all of the
benefits of the W7459 and W7210 with the
added features of the W7215. It did not
include shutdown, air change and purge but
had an “N” terminal for occupancy. On W7213
and W7214 models the N terminal was a B or
O terminal for use with heat pumps.
There were three models:
• W7212A- Used with series 70 actuators
including DCA’s, M7215, and Modutrol
Motors
• W7213A - Used with heat pumps or
conventional rooftop units. B terminal
energized in heating and unenergized in
cooling
• W7214A - Used with heat pumps or
conventional rooftop units. O terminal
unenergized in heating and energized in
cooling.
All models were panel mounted or directly
mounted to M7215 motor.
Commercial
thermostat
One enthalpy or dry bulb and
one mixed/supply air sensor
required. Second enthalpy
sensor optional.
W7212, W7213
and W7214 install
on flat surface or
mount on M7215
motor.
Optional room CO
2
sensor on A models,
additional optional
outdoor CO
2
sensors
on B models.
Series 62 or 72 Direct
Coupled Actuators
or M7215 Actuator
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