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INSTALLATION INSTRUCTIONS

31-00093-01

BACnet® Fixed Function Thermostat

FOR FAN COIL/HEAT PUMP/CONVENTIONAL SYSTEMS

Dimensions

The Fixed Function Thermostat consists of a mounting 
plate and a circuit board with a plastic cover.

 

Fig. 1. Fixed Function Thermostat dimensions

APPLICATION

Honeywell’s BACnet® Fixed Function Thermostat, BACnet 
FF, is a configurable device with 19 pre-loaded 
applications. The thermostat is a communicating, 
intelligent sensor-controller combination with built-in 
temperature and humidity sensors used to control 
applications such as roof top units, fan-coil units and heat 
pumps. The thermostat communicates over an MS/TP 
LAN so it operates as a fully-functioning BACnet 
controller and easily integrates with the building 
automation system. The two available models are 
TB3026B and TB3026B-W, which includes a wireless 
sensor option.

INSTALLATION

When Installing this Product...

1.

Read these instructions carefully. Failure to follow 
them could damage the product or cause a 
hazardous condition.

2.

Check ratings given in instructions and on the 
product to ensure the product is suitable for the 
application.

3.

Installer must be a trained, experienced service 
technician.

4.

After installation is complete, check out product 
operation as provided in these instructions.

MERCURY NOTICE

If this control is replacing a control that contains 
mercury in a sealed tube, do not place your old 
control in the trash. Dispose of properly.

Contact your local waste management authority 
for instructions regarding recycling and the proper 
disposal of an old control. If you have questions, 
contact Honeywell Customer Care Center.

CAUTION

Electrical Shock or Equipment Damage Hazard.
Can shock individuals or short equipment 
circuitry.

Disconnect power supply before installation.

Summary of Contents for TB3026B

Page 1: ...ls are TB3026B and TB3026B W which includes a wireless sensor option INSTALLATION When Installing this Product 1 Read these instructions carefully Failure to follow them could damage the product or cause a hazardous condition 2 Check ratings given in instructions and on the product to ensure the product is suitable for the application 3 Installer must be a trained experienced service technician 4 ...

Page 2: ...n a 4 in x 2 in 101 6 mm x 50 8 mm wiring box 1 Position and level the wallplate for appearance only 2 Use a pencil to mark the mounting holes see Fig 3 3 Drill two pilot holes in the wall on the marks For dry wall drill 3 16 in holes For firmer material such as plaster drill 7 32 in holes Gently tap anchors pro vided into the pilot holes until flush with the wall 4 Pull the wires through the wiri...

Page 3: ... Analog Output 16 GND Ground 17 BO2 Relay Output 18 BO3 Relay Output 19 BO4 Relay Output 20 BO5 Relay Output Table 2 MS TP LAN facts Transmission speed 9 6 19 2 38 4 76 8Kbps configured at global controller Layout Bus Cabling BACnet specifies the following Shielded twisted pair cabling with characteristic impedance between 100 and 130W Distributed capacitance between conductors must be less than 3...

Page 4: ...es and becomes more square When the resistance value increases the amplitude of the wave form increases and becomes less square Typically precision resistors in the range 80 130 Ohms 1 yield acceptable results Ideally the value of the terminating resistors should match the rated characteristic impedance of the installed cable For example if the installed MS TP cable has a listed characteristic imp...

Page 5: ...one to exit installer setup For example if the MAC address is 15 and the device instance to 1876 use these settings ISU code 800 15 ISU code 801 0 ISU code 802 00 ISU code 803 18 ISU code 804 76 Installer Setup ISU Codes Installer setup mode provides access to functions specific to installation of a BACnet FF Some BACnet FF configuration parameters can be altered from the ISU screens The ISU param...

Page 6: ... Hum pad change reminder AV 125 0 reminder not used 1 90 days 2 180 days 3 365 days 520 UV lamp change reminder AV 126 0 reminder not used 1 365 days 540 Program periods AV 129 2 Wake Sleep 4 Wake Leave Return Sleep 640 Clock format BV 83 12 12 hour BV 83 0 24 24 hour BV 83 1 670 Keypad lock AV 128 0 no lock 1 access temperature settings only 2 fully locked 700 Sensed room temperature offset AV 13...

Page 7: ...a radio signal 4 Activate the sensor to be paired NOTE Pairing times out after 10 seconds of no pairing activity 5 Verify that the BACnet FF and sensor successfully paired Paired sensor status is displayed replacing Timed out RESET is displayed and sensor status is Fig 10 Door sensor number 1 paired and in closed status TO ERASE SENSOR TO BACNET FF PAIRINGS 1 While viewing any sensor status screen...

Page 8: ...ersal inputs with 12 bit accuracy providing con trolled voltage current and resistive modes Internal Sensors 1 internal temperature sensor 0 120 deg F 17 8 48 9 deg C 1 internal humidity 5 95 RH non condens ing Relay Outputs 6 relay outputs normally open contacts with a maximum switch rating of 24VAC 0 5A 12VA BO 0 BO 2 and BO 5 are powered from the controller transformer BO 1 BO 3 and BO 4 are po...

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