Engineering Manual
MULTI
F
MAX
MULTI
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4 to 5 feet
above the floor
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DUCT (HIGH STATIC) INDOOR UNITS
Wired Controller Placement
Assigning the Thermistor for Temperature Detection
Each indoor unit includes a return air thermistor assigned to sense the temperature. If a wired controller is installed, there is a choice of
sensing temperature with either the indoor unit return air thermistor or the thermistor in the wired controller. It is also an option to set both
thermistors to sense temperature so that indoor unit bases its operation on the first thermistor to reach the designated temperature differen-
tial. For applicable indoor units, an optional Remote Temperature Sensor can be used in lieu of the return air thermistor—either alone or in
conjunction with a wired controller thermistor as previously described.
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levels in the conditioned space, the wired controller must be installed in a location
away from direct sunlight, high humidity, and where it could be directly exposed to
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LED display can be read easily, in an area with good air circulation, and where it can
detect an average room temperature.
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• Drafts or dead spots behind doors and in corners
• Hot or cold air from ducts
• Radiant heat from the sun or appliances
• Concealed pipes and chimneys
• An area where temperatures are uncontrolled, such as an outside wall
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Hanging the Wired Controller
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is desired, remove cable guide grooves on the controller, and
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Choose and mark the area of installation, and then screw the wall
plate into place (using the provided parts). Install the controller
wall plate to fit the electrical box if one is present. Ensure that no
gaps exist between the wall plate and the wall itself.
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circuitry. Position the wired controller on the wall plate. Snap into
place by pressing the bottom part of the wired controller onto
the wall plate. Make sure that no gaps exist between the wired
controller and the wall plate on all sides.
To remove wired controller from the wall plate, insert a screw-
driver into the two holes at the bottom. Twist screwdriver to
release controller. Do not damage the controller components
when removing.
Back
Top
Top
Right
Side
Right
Side
Wall Wall
Wall Wall
Installing the Controller
Removing the Controller
)LJXUHRemoving the Cable Guide Grooves.
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the Controller.
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118 | DUCT (HIGH STATIC)
Multi F and Multi F MAX Indoor Unit Engineering Manual