TEC22x4-3 L
ON
W
ORKS
® Networked Multi-Stage Economizer Thermostats Installation Instructions
16
Technical Specifications
Thermostat does
not call for cooling
Wrong mode
selected
Select cooling mode.
Thermostat in
Unoccupied mode
Select Override to force the thermostat Occupied cooling setpoint.
Anticycle delay
active
Wait — the anticycling period must end before the equipment can start.
Cooling setpoint is
satisfied
Lower the cooling setpoint.
Cooling lockout
attained
Mode is locked out based on outside air temperature.
Change configuration parameter
C Lock
to value -40 °F (-40 °C) to by-pass
lockout.
Wiring error
Start the fan by forcing the Fan ON mode.
Put a jumper across terminals RC and Y1. The cooling should come ON. If it
does not, verify wiring
The thermostat
does not turn on
the fan
Wiring error
Start the fan by forcing the Fan ON mode.
Put a jumper across terminals RC and G. The fan should come ON If it does
not, verify wiring.
Digital display
shows missing
digits or erratic
segments
Defective display
Replace the thermostat.
Table 9: Display Messages
Display
Function
Service
Indicates that there is a service alarm in accordance with the programmable Digital Inputs (DI1 or DI2)
Filter
Indicates that the filter(s) is dirty in accordance with the programmable Digital Inputs (DI1 or DI2).
Frost ON
Indicates that the heating is energized by the low
-
limit frost protection room temperature setpoint.
SetClock
Indicates that there has been a power failure greater than 6 hours and the clock needs to be reset.
Table 8: Troubleshooting Details (Part 2 of 2)
Symptom
Cause
Solution(s)
TEC22x4-3 L
ON
W
ORKS
Networked Multi-Stage Economizer Thermostat (Part 1 of 2)
Power Requirements
19 to 30 VAC, 50/60 Hz, 2 VA (Terminals RC and C) at 24 VAC Nominal, Class 2 or
Safety Extra-Low Voltage (SELV)
Economizer
Output
Rating
0 to 10 VDC into 2k ohm Resistance (Minimum)
Accuracy
±3%
Relay Contact Rating
30 VAC, 1.0 A Maximum, 3.0 A In-Rush, Class 2 or SELV
Digital Inputs
Voltage-Free Contacts across Terminal C to Terminals DI1 and DI2
Wire Size
Unshielded Twisted Pair - 22 AWG (0.6 mm Diameter) Minimum, 18 AWG (1.0 mm
Diameter) Recommended
L
ON
W
ORKS
Network Standard
64 Devices Maximum without repeater, 128 Devices Maximum with repeater; 6,250 ft
(1,905 m) Maximum Length (Bus Topology)
Temperature Sensor Type
Local 10k ohm Negative Temperature Coefficient (NTC) Thermistor
Temperature
Range
Backlit
Display
-40.0°F/-40.0°C to 122.0°F/ 50.0°C in 0.5° Increments
Heating
Control
40.0°F/4.5°C to 90.0°F/32.0°C
Cooling
Control
54.0°F/12.0°C to 100.0°F/38.0°C
