Typical Connections For Temperature Sensor Applications - Daikin AVV Installation And Maintenance Manual

CAUTION
Static sensitive components. A static discharge while handling
electronic circuit boards can cause damage to the components.
Discharge any static electrical charge by touching the bare metal
inside the main control panel before performing any service work.
Never unplug any cables, circuit board terminal blocks, relay
modules, or power plugs while power is applied to the panel.
Typical Connections For
Temperature Sensor Applications
The low voltage field wiring connections have all been
centrally located within the unit ventilator and are easily
accessible.
To simplify field connections, multi-pin plugs are factory
provided and pre-wired with short wire whips
Each of the wires in these wire whips is capped and should
remain capped if not used. See
wiring the remote mounted temperature sensor to the unit
control wiring.
All low voltage field wiring connections must be run in
shielded cable with the shield drain wires connected as
shown in the field wiring diagrams.
For sensor terminal wiring details see the installation
manual specific to the sensor being used.
Figure 109: Model AV - Field Wiring Whips with Caps
Viewed from Right End Compartment
Field Wiring at
back of Local User
Interface (LUI)
Panel
Plug for unit mounted sensor
IM 817-7
(Figure 109).
Table 37 on page 50 for
Wi r e Wi p s f o r
Field Wiring with
Caps (see the
wiring diagram
provided on the
unit ventilator right
front access panel)
Sensor Functions
• Display sensor to show room Temperature, fan speed
(AUTO/HIGH/MEDIUM/LOW), system mode (HEAT/COOL
AUTO/OFF), ALARM, Override and occupancy.
Mounting
Location
Avoid mounting on outside walls or in direct sunlight.
Junction Box, (J-Box)
1. Pull the wire through the wall and out of the junction box,
leaving about six inches free.
2. Pull the wire through the hole in the base plate.
3. Secure the back plate to the box using the #6-32 × 1/2 inch
mounting screws provided.
4. Screw the plate firmly to the wall so the foam plate backing
is compressed about 50%.
5. Terminate the unit according to the guidelines in the
Termination section.
6. Attach Cover by latching it to the top of the base, rotating it
down and snapping into place.
7. Secure the cover by backing out the lock-down screws
using a 1/16" Allen wrench until it is flush with the bottom of
the cover.
Figure 110: Junction box mounting (hardware is provided
for both junction box and drywall installation.)
Mounting
base plate
Cover lockdown screws 1/16" allen
Drywall Mounting
1. Place the base plate against the wall where you want to
mount the sensor.
2. Mark out the two mounting holes where the unit will be
attached to the wall. Drill a 3/16" hole in the center of each
mounting hole and insert a drywall anchor into the holes.
3. Drill one 1/2" hole in the middle of the marked wiring
through hole area.
4. Pull the wire through the wall and out the 1/2" hole, leaving
about six inches free.
5. Pull the wire through the hole in the base plate.
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