Section 1 - Ventilation
19 Honeywell Economizers 63-8594-02
6. Use the mixed air temperature formula or the graph:
NOTE: Note use this formula to determine
DCV maximum MAT and Minimum
position MAT.
7. Close the outside air dampers to the
minimum position.
The method used for this depends upon
the controller being used.
8. On analog economizers, turn the DCV
maximum control (potentiometer) until the
measured mixed air temperature is
_____°F (_____°C). When using the
JADE
TM
controller, go to the set point
menu and adjust the Vent max setting
using the up and down arrows on the
keypad.
9. Mark this setting on the control as being
36% outdoor air.
10. On analog economizers, turn the
minimum position until the measured
mixed air temperature is _____°F
(_____°C). When using the JADE
TM
controller, go to the set point menu and
adjust the Vent min setting using the up
and down arrows on the keypad.
11. Mark this setting on the control as being
_____% outdoor air.
12. Restore all settings and setpoints.
Return Air
Temperature
X
% of
Return Air
+
Outside Air
Temperature
X
% of
Outside Air
=
Temperature
of Mixed Air
68°F (20°C) X ____% + 21°F (-6°C) X ____% =
Temperature of
Mixed Air
_____°F (____°C) + _____°F (_____C) _____°F (____°C)
M23919B
SUPPLY
AIR
SUPPLY OR
MIXED AIR
SENSOR
COMMERCIAL
THERMOSTAT
S
+
OUTSIDE
AIR
21˚F (-6 C)
FILTERS
RETURN
AIR
68˚F (20 C)
ADJUST THIS SETTING
UNTIL THE MIXED AIR
IS ___˚F (___ C)
CONTROLLER