Carrier Comfortvu tb-24 Operating instructions

ComfortVu™ BACnet

Thermostat Model Standard

TB-24 (24 Vac)

Installation and Operation Guide

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Community website, or your local Carrier office.

Important changes are listed in Document revision history at the end of this document.

Contents

Overview ....................................................................................................................................................................... 1

Specifications............................................................................................................................................................... 2

TBPL-24-H Dimensions ............................................................................................................................................... 4

Technician Settings Index ........................................................................................................................................... 5

Operating Instructions................................................................................................................................................. 7

Quick Guide ...........................................................................................................................................................7

Turning the thermostat ON and OFF..................................................................................................................8

Selecting temperature scale...............................................................................................................................8

Adjusting the Setpoint temperature..................................................................................................................9

Selecting system mode .......................................................................................................................................9

Selecting fan speed (for 2 and 3 fan speeds configuration) ...................................................................... 10

Turning Auto fan ON or OFF (fan on demand)............................................................................................... 10

Locking the thermostat buttons...................................................................................................................... 11

Economy mode .................................................................................................................................................. 11

Freeze Protection............................................................................................................................................... 12

Economizer ......................................................................................................................................................... 12

Weekly program ........................................................................................................................................................14

MAC Address and BACnet Device Instance Number ..............................................................................................19

Installation .................................................................................................................................................................21

General................................................................................................................................................................ 21

Wiring terminals ................................................................................................................................................ 22

DIP switch and jumper configurations ........................................................................................................... 23

AC configurations............................................................................................................................................... 24

FC configurations for 2-pipe systems ............................................................................................................. 24

FC configurations for 4-pipe systems / Floor heating.................................................................................. 25

Wiring and DIP switch/jumper configurations 1 to 4 – AC systems......................................................... 26

Wiring and DIP switch/jumper configurations 5 to 7 – AC systems......................................................... 27

Wiring and DIP switch/jumper configurations 8 to 9 – AC systems......................................................... 28

Wiring and DIP switch/jumper configurations 10 to 13 – FC systems - 2-pipe ...................................... 29

Wiring and DIP switch/jumper configurations 14 to 17 – FC systems - 4-pipe ...................................... 30

Wiring and DIP switch configurations 18 to 21 – FC systems - 4-pipe..................................................... 31

Wiring and DIP switch/jumper configuration 22 – FC systems - 4-pipe................................................... 32

Technician Settings ...................................................................................................................................................33

Technician Settings P01 to P03...................................................................................................................... 33

Technician Settings P04 to P07...................................................................................................................... 34

Technician Settings P08 to P10...................................................................................................................... 35

Technician Settings P11 to P15...................................................................................................................... 36

Technician Settings P16 to P25...................................................................................................................... 37

Technician Settings P26 to P30...................................................................................................................... 38

Technician Settings P31 to P34...................................................................................................................... 39

Technician Settings P35 to P42...................................................................................................................... 40

Technician Settings P43 to P44...................................................................................................................... 41

Technician Settings P45 to P46...................................................................................................................... 42

Technician Settings P47 to P48...................................................................................................................... 43

Technician Settings P49 to P51...................................................................................................................... 44

Technician Settings P52 to P57...................................................................................................................... 45

Technician Settings P60 to P64...................................................................................................................... 46

Technician Settings P65 to P70...................................................................................................................... 47

Technician Settings P71 to P75...................................................................................................................... 48

Technician Settings P76 to P79...................................................................................................................... 49

Contents

Technician Settings P83 to P88...................................................................................................................... 50

Technician Settings P89 to P99...................................................................................................................... 51

Technician Settings P101 to P109................................................................................................................. 52

Technician Settings P114 to P119................................................................................................................. 53

Technician Settings P122 to P187................................................................................................................. 54

Alarms and indications .............................................................................................................................................55

Document revision history ........................................................................................................................................56

The Carrier Corporation ComfortVu™ BACnet Thermostat Model TB-24 can be used:

•As a stand-alone thermostat that can control equipment using built-in logic

•As part of an MS/TP network of BACnet Thermostats that can be managed from a BMS front-end system

•As part of a BACnet MS/TP network connected to the Carrier Corporation BACnet router in a i-Vu® system. The

router’s control programs provide trending and alarming of the BACnet Thermostat’s data.

The TB-24 thermostat has a white plastic enclosure with an LCD display and buttons for user control. It has on-board

temperature sensing, and its on-board inputs and outputs are used to control equipment and optional external sensing

devices. Inputs and outputs are configured using DIP switches and jumpers. The TB-24 thermostat requires 24 Vac power.

Overview

Sensing element:

Temperature

Range

41° F to 95° F (5° C to 35° C)

Accuracy

±1.0° F (0.5° C)

Power 24 Vac ±15%: 4VA unit, 76 VA full load

NOTE

Devices connected to outputs, such as a fan, will increase VA

requirements.

Communication BACnet MS/TP with baud rates up to 76.8 kbps (default baud rate is

38.4 kbps), detected and set automatically by the BACnet Thermostat.

Max 127 devices.

Inputs T1, 0 – Normally open or normally closed dry contract, or

0-10 Vdc analog input, or

50 kOhm thermistor @ 25°C

A, B - Communication +/- (RS485)

IN1, 0 - Normally open or Normally closed dry contract, or

0-10 Vdc analog input, or

50 kOhm thermistor @ 25°C

C, R - Power: 24 Vac

Outputs 11, 12, 13 – Digital outputs, 3A max.

14 – Digital outputs 0.3A max

15 and 16 – Depends on application.

Digital output 0.3A max., or

Analog output 0-10 Vdc, 5 mA max., not isolated

Environmental operating range 50° to 122° F (10° to 50° C), 10 to 90% relative humidity, non-

condensing

Mounting •

If using an electrical box, mount the included wallplate to a standard

4" x 2" electrical box using the two larger mounting screws, then

mount the thermostat to the wallplate using the three smaller

mounting screws.

•If not using an electrical box, flush-mount thermostat to wall (no

wallplate needed).

Weight 4.8 oz (0.14 kg)

Specifications

Compliance United States of America:

FCC CFR47, Chapter 1, Subchapter A, Part 15, Class B

Canada:

Industry Canada Compliant, ICES-003, Class B

Europe:

Mark, Low Voltage Directive: 2014/35/EU RoHS Compliant:

2011/65/EU

Australia and New Zealand:

C-Tick Mark, AS/NZS 61000-6-3

Title 24 compliant if connected to a BMS with custom programming for

economizer fault detection.

CA Prop 65 Warning: This product can expose you to chemica

ls including

Styrene and 1,3

- Propane sultone, which are known to the State of California to cause

cancer. For more information, go to www.p65warnings.ca.gov.

TBPL-24-H Dimensions

P01 – Offset for temperature readings calibration

P02 – Set point limit for cooling

P03 – Set point limit for heating

P04 – Lock the [Fan] button

P05 – Lock the [Mode] button

P06 – Lock the [On/Off] button

P07 – Lock the [+] and [-] buttons (Set buttons)

P08 – Functionality of T1 terminals

P09 – Functionality of IN1,0 terminals

P10 – Window contact (terminals IN1,0) polarity

P11 – Window contact delay time

P12 – Door switch (terminals T1,0) polarity

P13 – Door switch delay time

P14 – Enable/Disable Auto change over mode

P15 – Occupancy sensor logic (PIR)

P16 – Enable/Disable Occupancy sensor

P17 – PIR (occupancy sensor) delay time

P18 – Door switch or key tag configuration

P19 – PIR (Occupancy sensor) polarity

P25 – Economy set point for cooling

P26 – Economy set point for heating

P27 – On-delay time on-delay between heating stages

P28 – Off-delay time between heating stages

P30 – Beeper ON or OFF

P31 – Fan ON delay in cooling

P32 – Fan OFF delay in cooling

P33 – Fan ON delay in heating

P34 – Fan OFF delay in heating

P35 – Enable/Disable Freeze protection

P36 – Freeze protection cut-in set point

P37 – Freeze protection cut-out set point

P40 – View filter counter (hours) – Read only

P41 – Reset filter time

P42 – Adjust filter alarm delay counter (hours)

P43 – Soft start in heat – cut-in temperature

P44 – Soft start in heat – cut-out temperature

P45 – Cool differential band

P46 – Cool differential band offset

P47 – Heat differential band

P48 – Heat differential band offset

P49 – Shift between Cool and Heat in Auto mode

P50 – Shift between Cooling stages

P51 – Shift between Heating stages

P52 – Cool valve proportional band

P53 – Cool proportional low limit

P54 – Cool proportional high limit

P55 – Heat valve proportional band

P56 – Heat proportional low limit

P57 – Heat proportional high limit

P60 – Proportional ON percent

P61 – Proportional OFF percent

P63 – Time on-delay between cooling stages

P64 – Time off-delay between cooling stages

P65 – Fan VFS proportional band in cooling

P66 – Fan VFS proportional band in heating

P67 – Fan VFS Low speed percent in cooling

P68 – Fan VFS Medium speed percent in cooling

P69 – Fan VFS High speed percent in cooling

P70 – Fan VFS Low speed percent in heating

P71 – Fan VFS Medium speed percent in heating

P72 – Fan VFS High speed percent in heating

P74 – VFS Medium speed differential

Technician Settings Index

P75 – VFS High speed differential

P76 – Fan VFS Low limit in cooling

P77 – Fan VFS High limit in cooling

P78 – Fan VFS Low limit in heating

P79 – Fan VFS High limit in heating

P83 – View T2 temperature sensor readings

P84 – View T3 temperature sensor readings

P85 – Deice in cool – cut-in temperature

P86 – Deice in cool – cut-out temperature

P87 – Deice in heat time

P88 – Deice in heat break time

P89 – Deice in heat – cut-in temperature

P90 – Deice in heat – cut-out temperature

P91 – Compressor delay

P98 – Display set point only (hide room temperature)

P99 – One or Two set points

P101 – Screen dimming delay

P107 – Weekly program configuration

P108 – Weekly program - events per day

P109 – Weekly program event configuration

P114 – Cool PID Kp

P115 – Heat PID Kp

P116 – Cool PID Ki

P117 – Heat PID Ki

P118 – Cool PID Kd

P119 – Heat PID Kd

P122 – Cool Proportional output threshold time

P123 – Heat Proportional output threshold time

P160 – Minimum compressor ON time

P161 – Minimum compressor OFF time

P170 – Economizer low limit temperature

P198 – Not in use

P200 – Restore defaults

Press the [On/Off] button or wait 60 seconds to return to normal display.

Quick Guide

Operating Instructions

Turning the thermostat ON and OFF

Press the [On/Off] button to turn the thermostat ON or OFF.

Selecting temperature scale

e [C/F] button to switch between temperature scales.

Adjusting the Setpoint temperature

Note

: The setpoint must be different than 10, 11ºC/50, 52ºF.

In One setpoint configuration:

1 Press the [+] or [-]buttons once to view the setpoint

temperature.

2 Press again to adjust the setpoint.

In Two setpoints configuration:

1 Press the [+] or [-] buttons once - “ ” and the setpoint

temperature for cooling will appear on display.

2 Use the [+] or [-] buttons to adjust the setpoint for cooling.

3 Press the [Mode] button or wait 3 seconds. “ ” and the

setpoint temperature for heating will appear on display.

4 Use the [+] or [-] buttons to adjust the setpoint for heating.

Note: The setpoint for cooling must be higher than the setpoint for

heating.

Selecting system mode

Press the [Mode] button to switch between system modes.

Notes:

•During demand for cooling or heating, the active mode will

flash.

•In Auto mode, the active mode icon (Cool or Heat) will flash.

•Auto mode is not available in 2-Pipe system configuration.

Selecting fan speed (for 2 and 3 fan speeds configuration)

Press the [Fan] button to switch between fan speeds.

Notes:

•In Auto speed, the active fan speed icon will appear on display.

•Medium speed available in 3 speeds configuration.

•Auto Speed in AC configurations: the differential parameter

(speed change between stages) is determined by constant

0.7°C (1.4°F)

•Auto Speed in FC configurations: the differential parameter is

determined by object AV#59 –DifferentialOnOffFanSpeed

Turning Auto fan ON or OFF (fan on demand)

In 1-speed configuration:

Press the [Fan] button to turn Auto fan ON or OFF.

In 2- and 3-speed configurations:

Press and hold the [Fan] button for 7 seconds to turn Auto fan ON

or OFF.

•When ON, the fan will run on demand for cooling or heating.

•When OFF, the fan will run continuously.

Note: Auto fan cannot be selected in Fan only mode.

Locking the thermostat buttons

•Press and hold the [Mode] button for 7 seconds to lock or

unlock the thermostat buttons.

•When locked, the lock ( ) icon will appear on display with any

attempt to press the buttons.

•Enable or disable the option to lock different buttons using

Technician Settings P04-P07.

Lock indications

Economy mode

Activate Economy mode by triggering a window contact - remote on/off switch, window contact - remote economy switch,

door switch, key-tag, External motion sensor (PIR - passive infrared sensor) or through communication - binary value

“UnoccupiedByNetwork”.

•

Economy by Window contact – Remote On/Off switch

- Turning unit off

•

Economy by Window contact – Remote economy switch

- Using economy set points

Refer to technician parameters P25 and P26 for economy set points

Economy by External motion sensor (PIR

) or through

Communication

(binary value

“UnoccupiedByNetwork”)

Refer to technician parameter P15 “Occupancy sensor logic (PIR)”

Economy triggered by Door switch

Refer to technician parameter P18 “Door switch or key tag configuration”

Economy

by Key-tag

Refer to technician parameter P18 “Door switch or key tag configuration”

Freeze Protection

The Freeze protection feature will not allow the room temperature to drop

below predefined cut-in temperature. Depending on which configuration the

system is operating under (W/WO Heat pump), this feature will force the

system to operate in heat mode and activate the fan.

This feature will take effect when the thermostat is either ON or OFF. When

the room temperature rises above the predefined cut-out temperature, the

thermostat will return to its previous state.

When freeze protection is activated, the display alternates between “AL”

and room temperature.

Economizer

Economizer is used to reduce the energy consumed by the cooling systems, by using low external air temperatures to assist

in the chilling process. When outdoor temperatures are lower relative to indoor (room) temperatures, the system utilizes the

cool outdoor air as a free cooling source.

The outdoor temperature (Teconomizer) triggering the activation of the economizer, can be measured by the temperature

sensor connected to T1,0 terminals (technician parameter P08="05") or by setting a temperature value manually through

communication - AV#129 "TEconomizerEffective".

When getting the temperature through communication, terminals T1,0 can be used for any other functionality like External

sensor/Soft start in heat sensor/De-icing in cool/Door switch/Key tag.

Whenever there is demand for cooling and the outdoor temperature conditions allow the operation of the economizer, it will

operate together with the regular cooling system and will not replace it.

Economizer will start when, and run as long as, both of the following conditions are satisfied:

1 Teconomizer temperature < Room temperature - (Cool differential band / 2)

2 Room Temperature > Setpoint temperature

Economizer will stop when the following condition is satisfied:

Room Temperature < Setpoint temperature -(Cool differential band / 2)

Indication for the Economizer operation:

When Economizer is active, the “Cool” symbol will appear (or flash when active) on

display and the “Fan” symbol will flash.

Economizer Active

General

Prior to programming, make sure that Technician Settings P107, P108, and P109 are configured correctly.

Program types

The thermostat can be configured to run four different types of weekly programs (set by Technician Setting P107):

•7-day program with same parameters for all days.

•7-day program with different parameters for each day of the week.

•One schedule for the weekdays (Monday to Friday), one schedule for Saturday and another one for Sunday.

•One schedule for the weekdays (Monday to Friday) and another one for Saturday and Sunday.

Daily events

Each daily program can use 2 or 4 schedule events per day (set by Technician Setting P108).

There are two options for settings the schedule events (set by Technician Setting P109):

•“EU Type” - Start time and Stop time.

•“US Type” - Start time, setpoint temperatures, system mode and fan speed.

IMPORTANT

•Parameter P107 must not be equal to “0” in order to enable weekly program capabilities.

•Changing P107 to “0” will disable all program capabilities and reset programmed information.

Enabling/Temporarily Disabling/Overriding the program

•Activate the program

○When the program is activated, a clock icon appears on the display.

○If a clock icon does not appear, ensure that the set-point temperature is not 10/11ºC or 50/52ºF, press

and hold the button to activate the program.

Weekly program

•Temporarily disable the program - without losing programmed information – for example, when out of the

office or leaving for vacation:

○Make sure that the set-point temperature is not 10/11ºC or 50/52ºF.

○Press and hold the button to temporarily disable the program.

○Press and hold the button again to reactivate to the program.

•Override the program - the occupant can temporarily change the set point temperature to be different than

the set point temperature specified by the program. Changes remain in effect until the next program event

begins.

Programming procedure

•The detailed programming procedure is described in the next sections. Make sure to follow the right

programming procedure, suitable for the program type and features selected by Technician Settings.

•Press the [C/F-Prog] button to enter and proceed through the steps of the real time clock and programming

procedure.

•Use the [+] or [-] buttons to select or change value of a flashing icon.

•It is recommended to select programming values prior to the actual programming.

Exit the programming procedure

At any time during the programming procedure, press the [On/Off] button to exit and return to normal display. Any changed

values will be saved.

Adjusting the time and day of the week

1. Press and hold the [C/F-Prog] button. The word “Clock” will appear on display, and the HOURS will flash.

Hours

2. Use the [+] or [-] buttons to adjust the hours.

Minutes

3. Press the [C/F-Prog] button again. The MINUTES will flash.

4. Use the [+] or [-] buttons to adjust the hours.

Days

5. Press the [C/F-Prog] button again. The DAYS will flash.

6. Use the [+] or [-] buttons to select the day.

7. If Technician Setting P107 is not set to “00” (program is enabled), press the [C/F–Prog]

button to enter programming procedure. Be sure to follow the right programming

procedure, suitable for the program type and features selected by Technician Settings.

Section C – “EU Type”

Section D – “US Type”

Otherwise, press the [C/F-Prog] button to return to normal display.

Adjusting “EU type” daily programs

Start time

1. Press the [C/F–Prog] button. The programmed weekday(s), “Prog 1” indicating the first

program event of the day and the word “Start” will appear on display.

The HOURS will flash.

Note: If this is the first time a program is being set, the symbols “--“ will flash.

2. Use the [+] and [-] buttons to adjust the start time hours of the first event.

3. Press the [C/F–Prog] button again. The MINUTES will flash.

4. Use the [+] and [-] buttons to adjust the start time minutes of the first event.

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