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Cassette Air Handler
26
SEqUENCE Of OpERATION
pOWER/SEND
Pressing the PoWER/SEND button mo-
mentarily will switch the unit either on or off.
In the
off Mode
, the Liquid Crystal Display
(LCD) will display the time of day and day
of the week. In the
on Mode
the LCD will
also display the room temperature, mode
of operation
Cooling, heating, Auto (Auto
changeover), Dry
or
fan Mode.
While in
the
on Mode
, the setpoint temperature will
display momentarily with the push of any
button except the POWER/SEND button.
Also, when held down for two (2) seconds,
transmits all
optional
Infrared Hand Held
Controller information to the Cassette
.
NOTE:
Heating, Auto Changeover (Auto) or
Dry Modes will not display if Heat Source is set
to Off in the
Configuration Mode.
MODE OF OpERATION
The MoDE button allows the selection
of the mode of operation,
Cooling, heat-
ing, Auto Changeover (ACo), Dry
or
fan
Mode.
In Fan Mode either “HIGH” or
“LOW” will appear on the LCD.
NOTE:
Heating, Auto (Auto Changeover) or
Dry Modes will not appear if Heat Source is set
to Off in the
Configuration Mode.
FAN OpERATION
The indoor unit utilizes a two-speed mo
-
tor with three (3) operational fan modes,
High, Low and Auto. The FAN button will
allow the selection of the desired fan set
-
ting in all modes except
Dry Mode
. In
Dry
Mode,
the fan will operate constantly at
low speed. The LCD will indicate the fan
speed selection.
High and Low are constant fan settings.
The fan operates continuously, regardless
of setpoint or room temperatures.
Auto Fan Mode is for auto ramping of fan
speeds. Auto Fan Mode can only be se
-
lected if the unit is in Heating, Cooling or
Auto Changeover Modes. in Auto fan
Mode the speed is determined by the mi-
croprocessor and speed adjustment will
be made according to room and setpoint
temperatures. The fan will switch to high
speed when room temperature deviates
by more than two (2) degrees from set-
point. The fan will switch to low speed if
the deviation is one (1) degree or less.
LOUvER OpERATION CAHB 24 AND
CACB 36 ONLY:
The louver can be set to oscillate on or
switched off for at a fixed setting. Press
-
ing the Louver button, the word “Lou”, will
display for two (2) seconds along with “ON
or “OFF” to indicate that the louver setting
has been changed, see
Figure #11
.
LCD Display – Louver Operation
Figure #11
In
Cooling, heating, Auto changeover
or
fan Modes
, when the louver is on, the
louver will oscillate continuously. When
the louver is off, the louver will remain in
a fixed position.
Содержание CAC_36
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