11. Strip each wire 1/4 inch.
12. Insert each wire according to wiring diagram.
13. Gently push excess wiring back into the hole.
14. Install wiring terminals.
15. Reinstall the cover (top side first) and gently push
extra wire length back in the hole in the wall.
16. Install security screw.
te
rm
in
a
lb
lo
c
k
s
Figure 3: Security Screw
Caution
•
If replacing an old thermostat, label the wires
before removal of the old thermostat.
•
Electronic controls are static sensitive devices.
Discharge yourself properly before installing the
thermostat.
•
Short circuits or incorrect wiring may permanently
damage the thermostat or the equipment.
•
Anti-short cycling can be set to 0 minutes for
equipment that possesses its own anti-cycling
timer. Do not use that value unless the equipment
is equipped with such internal timer. Failure to do
so can damage the equipment.
•
All Thermostat devices are to be used only as
operating controls. Whenever a control failure
could lead to personal injury and/or loss of
property, it becomes the responsibility of the user
to add safety devices and/or alarm system to
protect against such catastrophic failures.
Wiring
If the same power source is used for the heating
stages, install jumper across RC and RH. Maximum
current is 2.0 amperes.
If auxiliary output is used to toggle occupancy of the
electronic control card inside the equipment, configure
the relay parameter (Aux cont ) to the Normally Open
(N.O.) setting. A second relay can be added for
additional functionality of the occupancy output.
Economizer output uses a half bridge rectifier.
Reference of the control signal is the common of the
power supply of the thermostat, terminal C.
Electromechanical contacts are to be used with the
digital inputs. Electronic triacs cannot be used as
mean of switching for the input. The switched leg to
the input is terminal C (common)
The transformer of the unit provides power to the
thermostat and the additional loads that are wired to
the thermostat.
Electrical Installation
Planning and Selecting Cables
Plan the placement of cables for inputs, outputs,
communication, and power.
Place input, output, power, and network cables to
avoid the effects of ambient noise.
Separate analog type cables for power,
communication, inputs, and outputs from other types
of cables.
Connectors
The board connectors accept wires or flat cables:
22-12 AWG (0.14-2.5 mm²) per pole.
Table 1: Cable Specifications
Cable Specification
Power
Minimum cable section 18 AWG
Inputs
Minimum cable section 20 AWG – twisted pair
Digital
Outputs
Minimum cable section 18 AWG
Analog
Outputs
Minimum cable section 20 AWG – twisted pair
2
TEC220x-2 Series Non-Programmable L
ON
W
ORKS
Network Configurable Staged Thermostats Installation
Instructions
