8
VIEGA 1-800-976-9819
PI-16015-03/09
5 Installation
CAUtIon
Improper installation and operation
of this control could result in damage
to the equipment and possibly
even personal injury. It is your
responsibility to ensure that this
control is safely installed according
to all applicable codes and
standards. This electronic control
is not intended for use as a primary
limit control. Other controls that
are intended and certified as safety
limits must be placed into the control
circuit.
5.1 Mounting and Rough-in
Check the contents of this package.
If any of the contents listed are
missing or damaged, please
contact your wholesaler or sales
representative for assistance.
The Basic Heating Control includes:
One Basic Heating Control,
One Outdoor Sensor, and One
Supply Sensor.
Note: Carefully read the details of
the Sequence of Operation to ensure
that you have chosen the proper
control for your application.
Mounting
Remove the control from its base by
pressing down on the release clip in
the wiring chamber and sliding the
control upward. The base may then
be mounted by screwing it to a wall
or mounting board (screws
not included).
Rough-in
All electrical wiring terminates in the
control base wiring chamber. The
base has standard 7/8" (22 mm)
knockouts, which accept common
wiring hardware and conduit fittings.
Before removing the knockouts,
check the wiring diagram and select
those sections of the chamber with
common voltages. Do not allow the
wiring to cross between sections as
the wires will interfere with safety
dividers that should be installed at a
later time.
Power must not be applied to any
of the wires during the rough-in
wiring stage.
• Install the Outdoor Sensor and
Supply Sensor according to the
instructions on page 9 and run the
wiring back to the control.
• If an Indoor Sensor (optional) is
used, install the sensor according to
the instructions included with it and
run the wiring back to the control.
• Run wire from other system
components (circulator pump, boiler,
actuating motor, etc.) to the control.
• Run wires from the 120 VAC power
to the control. Use a clean power
source to ensure proper operation.
Multi-strand 16 AWG wire is
recommended for all 120 VAC wiring
due to its superior flexibility and ease
of installation into the terminals.
Mounting holes
Release
clip
Conduit knockouts on back and bottom
Press down at grips on top of cover, then
pull out and down to release cover.
Loosen screws at front
and pull wiring cover straight out.
Remove safety dividers by pulling them
straight out.
Press release clip on base and slide
control upward.
The control lifts up and away from the
base, which is ready for mounting.
Wiring can enter from bottom or back of
enclosure. Knockouts allow wiring to be
run in conduit.
InstALLAtIon - CHAPtER 5
