Johnson Controls DOA096B21S Series, Engineering Manual

Page: 10 / 48

FEATURES
1-2
TC-16005-rev.2
■ High External Static Pressure
Flexible duct installation due to the high external static pressure capability.
■ Constant Air Volume Mode
Constant air volume mode is available for the unit in order to keep the air velocity constant during defrosting
or hot start operation.
Even when combined with a ventilation fan, air supply and exhaust are balanced by this constant air volume
mode. (Settings are available using the optional function setting in the wired controller.)
NOTE:
During the defrosting operation and start of the heating operation, airflow temperature will be decreased.
Carefully consider the installation location and direction of the air outlet.
Note that, when the air outlet temperature is 19.4
o
F (-7
o
C) or less, heating operation is stopped.
■ Flexible Layout when Using a Drain Pump
DOAS Unit
Max. Drain-Up Length
23-5/8 inches (600mm)
Unit Undersurface
Outlet
Outlet Outlet
Outdoor Unit
for DOAS Unit
Outlet Air
Thermistor
Wired
Controller
(Optional Part)
Intake
(Outdoor Air)
Indoor Unit
Intake
Exhaust
Outdoor Unit
DOAS
< Outlet Air Temperature Control >
In this mode, the control system bring the outlet temperature closer to the setting temperature of the
wired controller, using an outlet air thermistor in the unit.
[Advantage]
When it is set introduce outdoor air, the system enable intake of fresh air without impacting the room
temperature.
Temperature Set Point Range of Wired Controller: Cooling . 56
o
F (13
o
C) ~ 77
o
F (25
o
C)
Heating . 66
o
F (19
o
C) ~ 86
o
F (30
o
C)