Install Instructions

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Table Of Contents

INSTALLATION INSTRUCTIONS

31-00093-03

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

systems 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 content (12 pages)

PAGE 1
BACnet® Fixed Function Thermostat FOR FAN COIL/HEAT PUMP/CONVENTIONAL SYSTEMS INSTALLATION INSTRUCTIONS 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 systems such as roof top units, fan-coil units and heat pumps.
PAGE 2
BACNET® FIXED FUNCTION THERMOSTAT Location Do not install the thermostat where it can be affected by: — drafts or dead spots behind doors and in corners. — hot or cold air from ducts. — radiant heat from sun or appliances. — concealed pipes and chimneys. — unheated (uncooled) areas such as an outside wall behind the thermostat.
PAGE 3
BACNET® FIXED FUNCTION THERMOSTAT WARNING Table 2. MS/TP LAN Facts. Do not apply line voltage to source pins. A jumper is pre-installed between pins 1 and 2. The jumper supplies 24 VAC to BO-1, BO-3, and BO-4 relays. It can be removed if those BOs are powered from an external source. (Note: BO-0, BO-2, and BO-5 relays are powered from terminal 1.) Transmission 9.6, 19.2, 38.4, 76.8Kbps (configured at speed global controller). Layout Bus (daisy chain). Cabling BACnet specifies the following.
PAGE 4
BACNET® FIXED FUNCTION THERMOSTAT • Never ground both ends of a shield; differences in potential between the grounds may induce current on the shield, causing interference. • At termination connecting points, tie the shield through with a wire nut. • At ungrounded, exposed shield points (the end of a segment), tape back the shield to the wire jacket or, for optimum transient shunting, use 100V gas discharge tubes or 120V MOVs between shield and ground.
PAGE 5
BACNET® FIXED FUNCTION THERMOSTAT The Device Instance Number must be unique across the entire BACnet system network because it is used to uniquely identify the BACnet devices. It may be used to conveniently identify the BACnet device from other devices during installation. The Device Instance Number is set using the installer setup menu through the device’s display or over the BACnet network.
PAGE 6
BACNET® FIXED FUNCTION THERMOSTAT For a complete application configuration guide, refer to the BACnet Fixed Function Thermostat System Engineering Guide (31-00098) and WEBs-AX Configuration Guide (31-00097) TO ACCESS THE ISU SCREENS 1. From the home screen, press SYSTEM (left side of the screen). Five blank touch keys will appear at the bottom of the screen. 2. Press and hold the two blank keys on either side of the center key for approximately five seconds (see Fig. 7). 3.
PAGE 7
BACNET® FIXED FUNCTION THERMOSTAT Table 3. ISU Parameters. ISU Parameter Code Description Allowed Values 801 BACnet Device Instance - first digit 0-4 802 BACnet Device Instance second and third digits 00-99 803 BACnet Device Instance forth and fifth digits 00-99 804 BACnet Device Instance sixth and seventh digits 00-99 Pairing a Sensor to a Wireless BACnet FF (TB3026B-W Only) NOTE: Pairing times out after 10 seconds of no pairing activity.
PAGE 8
BACNET® FIXED FUNCTION THERMOSTAT Setting Field Service Codes To set field service codes 1. From the home screen, press SYSTEM. Five blank touch keys will appear at the bottom of the screen. 2. Press and hold the center bottom key for approximately five seconds (see Fig. 12). Max. Load = 89VA (all BOs ON). If BO power jumper is not removed, then all BOs are powered from the controller’s transformer. Minimum load includes controller and analog outputs at full load (20mA into 500 Ohms). All BOs are N.O.
PAGE 9
BACNET® FIXED FUNCTION THERMOSTAT Accessories 50037735-001 Wireless door/window sensor 50037736-001 Wireless passive infrared (PIR) motion sensor. • BACnet Fixed Function Thermostat Product Data (Form No. 31-00096) • BACnet Fixed Function Thermostat WEBs-AX Configuration Wizard Guide (Form No. 31-00097) • BACnet Fixed Function Thermostat System Engineering Guide (Form No. 31-00098) More Information To learn more about these products, visit http://customer.honeywell.
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BACNET® FIXED FUNCTION THERMOSTAT 31-00093—03 10
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BACNET® FIXED FUNCTION THERMOSTAT 11 31-00093—03
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BACNET® FIXED FUNCTION THERMOSTAT By using this Honeywell literature, you agree that Honeywell will have no liability for any damages arising out of your use or modification to, the literature. You will defend and indemnify Honeywell, its affiliates and subsidiaries, from and against any liability, cost, or damages, including attorneys’ fees, arising out of, or resulting from, any modification to the literature by you. Automation and Control Solutions Honeywell International Inc.