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Installation
Installing the BACnet™ Thermostat
This section provides important instructions and guidelines for
installing the BACnet Thermostat. Carefully review this information
before installing the controllers.
Mounting the BACnet Thermostat
For the most accurate performance, install the BACnet Thermostat on
an inside wall where it can sense the average room temperature. Avoid
locations with direct sunlight, heat sources, windows, air vents, and air
circulation or obstructions such as curtains, furniture, etc.
The BACnet Thermostat must not be:
• Mounted on an exterior wall
• Mounted on or near an object with a large thermal mass such as a
concrete block wall
• Blocked from normal air circulation by obstructions
• Exposed to heat sources such as lights, computers, copiers, or
coffee makers, or to direct sunlight at any time of the day
• Exposed to drafts from windows, diffusers, or returns
• Exposed to air flow through connecting conduits or empty spaces
behind walls
Rough-in Preparation
Complete rough-in wiring at each location before mounting a BACnet
Thermostat. This includes the following steps.
• Install the supplied mounting base directly to a wall, a vertical
electrical box, or a box with a wall plate kit
• Routing the connecting cable or cables from the BACnet
Thermostat to the equipment it is controlling
• Block leaks and airflow from conduits with plumber's putty or
similar material
• If replacing an existing thermostat, label existing wires for
reference when removing the existing thermostat
Figure 2: BACnet Thermostat Mounting Base Details
IO-DAPPS
Installing the BACnet Thermostat
Can cause equipment damage.
To prevent mounting screw heads from touching the circuit board
in the controller, use only the mounting screw supplied by Daikin.
Using screws other than the type supplied may damage the
BACnet Thermostat.
To install the controller on a mounting base, do the following:
1. Turn the Allen screw in the base of the sensor clockwise
until it clears the case.
2. Swing the BACnet Thermostat away from the mounting base
to remove it.
3. Route wiring for the BACnet Thermostat through the
mounting base.
4. Position the base with the embossed UP toward the ceiling
and fasten it directly to a vertical 2 × 4 inch electrical box.
5. Connect the wires for the BACnet Thermostat to the terminals
in the mounting base.
6. Place the top of the sensor over the top of the mounting base
and swing it down over the Allen screw bracket. Be careful not
to pinch any wiring.
7. Turn the Allen screw counterclockwise until it backs out of the
mounting base and engages the case.
Figure 3: Allen Head Directions
www.daikinac.com
CAUTION
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