Honeywell Design and Application Technical Reference Manual page 23

OUTSIDE
AIR
30˚F (-1 C)
Return Air
X
Temperature
6. Use the mixed air temperature formula or the graph to determine the Demand Control
Ventilation maximum MAT:
73°F (23°C) X
46.7°F (8.2°C)
7. Use the mixed air temperature formula or the graph to determine the minimum position MAT:
73°F (23°C) X
43.8°F (8.2°C)
8. Close the outside air dampers. The
method used for this depends upon the
controller being used.
9. When using analog economizers, turn the
DCV maximum position control (pot) until
the measured mixed air temperature is
57.5°F (14.2°C). When using the JADE
controller, go to the set point menu and
adjust the Vent max setting and the up
and down arrows on the keypad.
10. Mark this setting on the control as being
36% outdoor air.
RETURN
AIR
73˚F (23 C)
+
S
COMMERCIAL
THERMOSTAT
% of
Outside Air
Return +
Temperature
Air
64% + 30°F (-1°C)
+
60% + 30°F (-1°C)
+
TM
FILTERS
SUPPLY OR COILS
MIXED AIR
SENSOR
X Outside
X 36%
10.8°F (-11.8°C)
X 30%
12°F (-11°C)
11. Close the outside air dampers. On the
analog economizers, turn the minimum
position control (pot) until the measured
mixed air temp is 55.8 °F (13.2°C). When
using the JADE
point menu and adjust the Vent min
setting using the up and down arrows on
the keypad.
12. Mark this setting on the control as being
30% outdoor air.
17
Section 1 - Ventilation
SUPPLY
AIR
FAN
ADJUST THIS SETTING
UNTIL THE MIXED AIR
IS 62.5˚F (17 C)
M23918A
% of
Temperature
=
of Mixed Air
Air
Temperature of
=
Mixed Air
57.5°F (14.2°C)
Temperature of
=
Mixed Air
55.8°F (13.2°C)
TM
controller, go to the set
Honeywell Economizers 63-8594-02