Technical Specifications - Johnson Controls TEC2604-4 Installation Instructions Manual

Table 5: Troubleshooting Details
Symptom Probable Causes
Thermostat Does See the probable causes listed previously in the Multiple Symptoms section of this table.
Not Come Online
A thermostat controller may be connected to the wrong bus.
A baud rate may be specified in the new thermostat controller that is incompatible with the running
network.
No device on the network is configured to use a specific baud rate (normally the NAE), but all devices
are set to use auto baud. At least one device, typically the bus supervisor (NAE), must have an
assigned baud rate. Set the baud rate in the bus supervisor and set all other devices to auto baud.
1. For common MS/TP troubleshooting information, refer to the MS/TP Communications Bus Technical Bulletin
(LIT-12011034).

Technical Specifications

TEC2604-4 and TEC2604-4+PIR BACnet MS/TP Networked Multi-Stage Economizer Thermostat
Controllers (Part 1 of 2)
Power Requirements
Relay Contact Rating (Y1, Y2, G, W1,
W2, and AUX)
Digital Inputs
Analog Inputs
Wire Size
Temperature Sensor Type
Temperature Range Backlit
Display
Heating
Control
Cooling
Control
Accuracy Temperature
Minimum Deadband
Ambient Conditions Operating
Storage
16 TEC2604-4 and TEC2604-4+PIR BACnet® MS/TP Networked Multi-Stage Economizer Thermostat
Controllers Installation Instructions
1
(Part 2 of 2)
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)
19 to 30 VAC, 1.0 A Maximum, 15 mA Minimum, 3.0 A Inrush, Class 2 or SELV
Voltage-Free Contacts across Terminal C to Terminals DI1 and DI2
Resistive Inputs (RS and UI3) for 10k ohm Johnson Controls Type II Negative
Temperature Coefficient (NTC) Thermistor Sensors
18 AWG (1.0 mm Diameter) Maximum, 22 AWG (0.6 mm Diameter) Recommended
Local 10k ohm Johnson Controls Type II Negative Temperature Coefficient (NTC)
Thermistor Sensor
-40.0°F/-40.0°C to 122.0°F/ 50.0°C in 0.5° Increments
40.0°F/4.5°C to 90.0°F/32.0°C
54.0°F/12.0°C to 100.0°F/38.0°C
±0.9F°/±0.5C° at 70.0°F/21.0°C Typical Calibrated
2F°/1C° between Heating and Cooling
32 to 122°F (0 to 50°C); 95% RH Maximum, Noncondensing
-22 to 122°F (-30 to 50°C); 95% RH Maximum, Noncondensing