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44 UNT-SVX07A-EN
installation
procedureInstallation
Installing Wall Mounted
Controls
Reference the wall-mounted zone sensor
dimensions in Figure I-IP-6. Position the
controller on an inside wall three to five
feet above the floor and at least 18
inches from the nearest outside wall.
Installing the controller at a lower height
may give the advantage of monitoring
the temperature closer to the zone, but it
also exposes the controller to airflow
obstructions. Ensure that air flows freely
over the controller.
Before beginning installation, follow the
wiring instructions below. Also, refer to
the unit wiring schematic for specific
wiring details and point connections.
Wiring Instructions
Avoid mounting the controller in an area
subject to the following conditions:
• Dead spots, such as behind doors or in
corners that do not allow free air
circulation.
• Air drafts from stairwells, outside doors,
or unsectioned hollow walls.
• Radiant heat from the sun, fireplaces,
appliances, etc.
• Airflow from adjacent zones or other
units.
• Unheated or uncooled spaces behind
the controller, such as outside walls or
unoccupied spaces.
• Concealed pipes, air ducts, or chimneys
in partition spaces behind the controller.
Fan Mode Switch Installation
The fan mode switch ships loose inside
the unit accessory bag. Follow the steps
below to install the fan mode switch.
Items needed:
2 x 4 electrical junction box
1. Remove the brown wire if not using a
field-supplied damper. Remove the
terminals, cut and strip wires as
required for installation.
2. Level and position a 2 x 4 electrical
junction box. Follow the instructions
given in the “Interconnection Wiring”
section and route the wires as shown in
the wiring diagram. Refer to the typical
wiring diagram or to the unit specific
diagram on the unit.
3. Position the fan mode switch over the
junction box with the two screws
supplied.
Zone Sensor Installation
Follow the procedure below to install the
zone sensor module.
1. Note the position of the setpoint
adjustment knob and gently pry the
adjustment knob from the cover using
the blade of a small screwdriver.
2. Insert the screwdriver blade behind the
cover at the top of the module and
carefully pry the cover away from the
base.
3. To install the zone sensor module
without a junction box (directly to the
wall):
a. Using the module base as a
template, mark the the rectangular
cutout for the control wiring and module
installation holes. Ensure the base is
level.
b. Set the base aside and make the
cutout. Then, drill two
3
/
16
” diameter
holes approximately one-inch deep.
Insert and fully seat the plastic anchors.
c. Pull the control wires through the
cutout and attach the module to the wall
using the screws provided.
4. To install the zone sensor module to a
standard junction box:
a. Level and install a 2“ x 4” junction
box (installer supplied) vertically on the
wall.
b. Pull the control wires through the
cutout. Attach the module to the wall
using the screws provided.
5. Strip the insulation on the
interconnection wires back 0.25 inch
and connect to TB1. Screw down the
terminal blocks.
6. Replace the zone sensor cover and
adjustment knob.
If installing a Tracer
ZN510 or Tracer
ZN520 zone sensor, see the Tracer
Summit Communication section for more
information.
Figure I-IP-6. Wall mounted zone sensor dimensions.