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4 • Commercial Communicating Programmable Thermostat I&O Manual
026-1729 Rev 2 15-NOV-2016
3.3. STEP 2: Mounting the
New Thermostat
3.3.1. Mount the New Thermostat
1.
Unpack the thermostat and separate the Mount-
ing Plate from the thermostat.
Remove the pack-
ing material from the thermostat. Gently pull the
thermostat straight off of the base: hold the thermo-
stat from the back by the lower corners with one
hand, and pull the Mounting Plate off with the other
hand.
2. Feed the thermostat wires through the rectangu-
lar hole between the terminal blocks in the ther-
mostat Mounting Plate.
3.
Connect the wires to the thermostat Mounting
Plate.
Connect the wires beneath the terminal
screws on the base.
Figure 3-2
shows the location
of the wire terminals in the Commercial Communi-
cating Programmable Thermostat. There are two
sets of terminals on either side of the hole where the
wires are fed through. Each terminal is labeled with
a letter or a letter with a number (O, B, R, etc.).
Connect the wires as follows:
• Strip insulation about 3/8 inch from end of wire.
• Feed the thermostat wires through the rectangular
hole in the thermostat Mounting Plate.
• Locate the terminal that the wire needs to connect to
(refer to
Section 5,
Wiring Chart
).
• Bend the wire slightly, insert the wire under the con-
tact plate, and tighten the screw down onto the wire.
For full details on where to connect each wire, see
Section 5,
Wiring Chart
.
4.
Mark mounting hole locations.
Place the thermo-
stat Mounting Plate over the hole in the wall and
mark the mounting hole locations (
Figure 3-3
) us-
ing the Mounting Plate as a template.
5.
Drill holes.
Move the Mounting Plate out of the
way. Drill mounting holes using a 3/16 inch drill bit.
6.
Install the Mounting Plate.
Fasten the Mounting
Figure 3-1
- Thermostat Wires with Labels
WARNING! Take care when securing and
routing wires so they do not short to adjacent
terminals or rear of thermostat. Personal inju-
ry and/or property damage may occur.
To prevent personal injury and/or property damage,
contact Customer Service at your utility company
before attempting any step in the installation process
that you are unsure about how to perform.
NOTE: Forcing or prying on the thermostat
will cause damage to the unit.
G
W
C
R
Y
Figure 3-2
- Location of Wire Terminals
Figure 3-3
- Thermostat Mounting Hole Locations