Engineering Manual

MULTI
F
MAX
MULTI
F
TEMP
FA N
SPEED
OPER
MODE
)LJXUHController External
Static Pressure Setting Display.
• A certified technician must set the external static pressure value(s). If the external static pressure is set incorrectly, the system may
malfunction.
• Do not alter the external static pressure value that corresponds to each air flow level.
• External static pressure value can vary depending on the indoor unit.
• If by pressing the fan speed button during external static pressure setup, the fan speed is raised to the next level, the air flow value of
the previous fan speed will be maintained (external static pressure setting value is saved).
Assigning Air Flow
To assign an air flow for each fan speed, follow the steps below.
 To access system installer setting mode, press and hold the temperature increase and mode selection
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ing the mode selection button.
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 Use the temperature increase and decrease buttons to select the desired external static pressure set-
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value will display near the lower right corner of the LED.
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5. To deactivate system installer setting mode after the settings have been established, press and hold
the temperature increase and mode selection check buttons simultaneously for approximately three
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will automatically deactivate.
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DUCT (HIGH STATIC) INDOOR UNITS
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120 | DUCT (HIGH STATIC)
Multi F and Multi F MAX Indoor Unit Engineering Manual