Johnson Controls TEC22 4-3 Series Installation Instructions Manual page 2

3. Carefully pull the locking tabs on the right side of
the thermostat mounting base and unlock the
Printed Circuit Board (PCB). Open the PCB to the
left as illustrated in Figure 2.
Figure 2: Opening the Thermostat PCB
4. Pull approximately 6 in. (152 mm) of wire from the
wall and insert the wire through the hole in the
thermostat mounting base.
5. Align the thermostat mounting base on the wall and
use the base as a template to mark the two
mounting hole locations.
Note: Be sure to position the thermostat mounting
base so that the arrow on the base points upward to
indicate the top of the thermostat.
6. Drill a 3/16 in. (5 mm) hole at each of the two
marked locations and tap nylon anchors (included
with the thermostat) flush to the wall surface.
7. Position the thermostat mounting base on the wall
and use the two mounting screws (included with
the thermostat) to secure the base to the surface
as illustrated in Figure 3.
Note: Be careful not to overtighten the mounting
screws.
Figure 3: Securing the Thermostat
Mounting Base to the Wall
2 TEC22x4-3 L W
ON
PCB
Locking
Tabs
® Networked Multi-Stage Economizer Thermostats Installation Instructions
ORKS
8. Swing the PCB back to the right and carefully snap
it into the locking tabs on the thermostat mounting
base.
9. Pull the pull tabs on each of the connectors and
remove the screw terminal blocks as illustrated in
Figure 4.
Figure 4: Removing the Screw Terminal Blocks
Wiring
When an existing thermostat is replaced, remove and
label the wires to identify the terminal functions. When
a TEC22x4-3 thermostat is replaced, simply remove
the old screw terminal blocks and reinsert them onto
the PCB of the replacement thermostat.
CAUTION: Risk of Electric Shock.
! Disconnect the power supply before
making electrical connections to avoid
electric shock.
CAUTION: Risk of Property Damage.
! Do not apply power to the system before
checking all wiring connections. Short
circuited or improperly connected wires
may result in permanent damage to the
equipment.
IMPORTANT: Make all wiring connections in
accordance with local, national, and regional
regulations. Do not exceed the electrical ratings of
the TEC22x4-3 thermostat.
To wire the thermostat:
1. Strip the ends of each wire 1/4 in. (6 mm) and
connect them to the appropriate screw terminals as
indicated in Figure 5.