Johnson Controls T9800 Series Service manual

T9800 series BACnet MS/TP Networked Thermostat Controller Technical Bulletin
Rev 1.4
1 |P a g e
T9800 series BACnet MS/TP Networked Thermostat Controller
Technical Bulletin
Contents
Revision.............................................................................................................................................2
1. Introduction ..............................................................................................................................3
2. Product overview ......................................................................................................................3
3. Configuring MS/TP ....................................................................................................................4
3.1 Wiring the network .................................................................................................................4
3.2 End-of-Line termination..........................................................................................................4
3.3 Setting the network parameters .............................................................................................5
3.4 MS/TP controller mapping ......................................................................................................5
3.4.1 Preparation.......................................................................................................................5
3.4.2 Adding a Thermostat Controller.......................................................................................5
3.4.3 Adding BACnet MS/TP Points...........................................................................................5
4. MS/TP points.............................................................................................................................6
4.1 T9800 points list......................................................................................................................6
4.2 Points descriptions..................................................................................................................9
5 Output Mapping......................................................................................................................11

T9800 series BACnet MS/TP Networked Thermostat Controller Technical Bulletin
Rev 1.4
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Revision
Revision
Author
Comments
1.0
Zheng Jinrong
Initialize the document.
1.1
Zheng Jinrong
Add output mapping.
1.2
Zheng Jinrong
Update output mapping for ECM and AHU app.
1.3
Zheng Jinrong
Update exposed objects
1.4
Zheng Jinrong
Value of MV objects

T9800 series BACnet MS/TP Networked Thermostat Controller Technical Bulletin
Rev 1.4
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1. Introduction
This document describes how to configure the T9800 Series Thermostat Controllers for
BACnet MS/TP networked applications, including how to:
Connect to the MS/TP Bus and map a thermostat controller into a Network Automation
Engine (NAE).
Add a thermostat controller.
Add points.
Command and configure from an NAE.
2. Product overview
The T9800 series touch screen fan coil thermostat control the fan coil with local temperature to
get comfortable environment. Select the temperature scales and setpoints, the mode, and the
different values to control the Heating, Ventilating, and Air Conditioning (HVAC) system, maintain
the desired room temperature. The optional Occupied/Unoccupied feature saves energy.
T9800 provide different models for 2-pipes and 4-pipes application. The following table list the
T9800 models and their supported functions.
Table 1 T9800 model and function list
Type
Feature
T9800-
TF20-1JS0
T9800-
TF21-1JS0
T9800-
TB21-1JS0
Application
2-pipe heating and cooling
●
4-pipe heating and cooling
●
2-pipe 3-wire valve
●
2-pipe with floor heater
●
2-pipe with Tio2/ESP
●
Water source heat pump
●
Boiler(floor heater only)
●
2-pipe heating and cooling (Modulation)
●
●
4-pipe heating and cooling (Modulation)
●
2-pipe (Relay) ECM fan
●
4-pipe (Relay) ECM fan
●
2-pipe (Relay) 3-wire valve ECM fan
●
2-pipe (Relay) with floor heater, ECM
fan
●
2-pipe (Relay) with Tio2/ESP, ECM fan
●
Water source heat pump, ECM fan
●
2-pipe (Modulation) ECM fan
●
2-pipe (Modulation) with floor heater,
ECM fan
●
2-pipe (Modulation) with radiator, ECM
fan
●
AHU
●

T9800 series BACnet MS/TP Networked Thermostat Controller Technical Bulletin
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Output
Relay(H/C)
●
●
3-stage Relay(FAN)
●
●
●
AO 0~10VDC(H/C)
●
●
AO 0~10VDC(EC FAN)
●
input
Binary Input
●
●
●
AI NTC(10K)
●
●
●
AI 0~10VDC PICV
●
Function
fan speed (low,mid,high,auto)
●
●
●
touch screen
●
●
●
℃/℉optional
●
●
●
ventilation
●
●
●
occupancy dry-contact input
●
●
●
remote sensor
●
●
●
key lock
●
●
●
set point limit
●
●
●
auto changeover
●
●
●
restart after power failure
●
●
●
low-temperature protection
●
●
●
Setting mode
●
●
●
Humidity display
●
●
●
BACnet
MS/TP
●
●
●
Segmentation
●
●
●
auto baud rate
●
●
●
Power
supply
Terminal voltage 220VAC
●
●
Terminal voltage 24VAC
●
3. Configuring MS/TP
The T9800 supports network connectivity to BAS using a BACnet MS/TP.
3.1 Wiring the network
BACnet MS/TP run over the physical connection RS-485 connection, which requiring three
connections:
A
B
COM
Connect the T9800 in line with other devices on the network.
3.2 End-of-Line termination
T9800 doesn’t support an on-board EOL termination. It is strongly recommend that the first device

T9800 series BACnet MS/TP Networked Thermostat Controller Technical Bulletin
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and the last device has an EOL connected.
3.3 Setting the network parameters
All network configuration is done through the software. After power on the controller, and the fan
coil is power off, user can enter the controller setting mode by press the “fan” and “generale”
button simultaneously for 5 seconds. In setting mode, user can change the MAC address and baud
rate for the network. The setting index is 1 and 14.
Table 2 Network parameters
Parameter
Description
MAC
The valid address is 6-128. And the default value is 128, which is not
valid for a master device. User should change the MAC before
connect. Two devices on the same bas can’t have the same MAC
address.
Baud rate
The default value is Auto, which allows the device to automatically
detect the baud rate of the BACnet bus and operate at that speed.
An incorrect value causes the device to not communicate on the
network, and can potentially cause the network to fail. Options for
this setting are Auto, 9,600, 19,200, 38,400, and 76,800 Baud.
3.4 MS/TP controller mapping
3.4.1 Preparation
Before you map a T9800 Series Network Thermostat Controller into an NAE:
1. Decide which points within the thermostat controller need to be mapped. Only map
the points that need to be viewed on a regular basis because excessive mapping
lowers system performance. Suggested points for mapping include Zone Temp, Set
Point, Mode and Fan Speed.
2. Verify that a Field Bus is defined in the NAE. BACnet MS/TP devices attach to a Field
Bus. Refer to the BACnet MS/TP Integration with the NAE Technical Bulletin (LIT-
12011013) or the Metasys N2 Communication Bus Technical Bulletin (LIT-636018)
for instructions on how to define a Field Bus.
3.4.2 Adding a Thermostat Controller
The thermostat controller must be added before its points can be mapped. To add the
thermostat controller, select either the Field Bus and choose Field Device from the Insert
menu. Assisted Definition using Auto Discovery is the easiest way to add a new thermostat
controller online; however, this method requires that the thermostat controller to be added is
connected and ready to communicate. Device addresses must be unique from 6 to 127 for
the BACnet MS/TP.
3.4.3 Adding BACnet MS/TP Points
The required points must be mapped under the thermostat controller device. To map the
points, select the thermostat controller device under the BACnet Integration (refresh the tree
view if required to see a newly added thermostat controller device) and choose Field Point
from the Insert menu. Assisted Definition using Auto Discovery is the easiest way to add new

T9800 series BACnet MS/TP Networked Thermostat Controller Technical Bulletin
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points online; however, this function requires that the thermostat controller that is to be
mapped is connected and ready to communicate. When mapping points offline, the point type
must match the BACnet object type (for example, AV, MV, BI), and the point instance number
must match the point BACnet instance number.
4. MS/TP points
4.1 T9800 points list
Some points exposed or not depend the value of app.
The app code show follow.
0 -＞2-pipe heating and cooling
1 -＞4-pipe heating and cooling
2 -＞2-pipe 3-wire valve
3 -＞2-pipe with floor heater
4 -＞2-pipe with Tio2/ESP
5 -＞Water source heat pump
6 -＞Boiler(floor heater only)
7 -＞2-pipe heating and cooling (Modulation)
8 -＞4-pipe heating and cooling (Modulation)
9 -＞2-pipe (Relay) ECM fan
10 -＞4-pipe (Relay) ECM fan
11 -＞2-pipe (Relay) 3-wire valve ECM fan
12 -＞2-pipe (Relay) with floor heater, ECM fan
13 -＞2-pipe (Relay) with Tio2/ESP, ECM fan
14 -＞Water source heat pump, ECM fan
15 -＞2-pipe (Modulation) ECM fan
16 -＞2-pipe (Modulation) with floor heater, ECM fan
17 -＞2-pipe (Modulation) with radiator, ECM fan
18 -＞AHU
The following table list all the points in T9800.
Table 3 T9800 BACnet points
Parameter
Range
Type-
Instance
EXPOSED
TF20-9JS0
TF21-9JS0
TB21-9JS0
Device
DEV-1
ALWAYS
ALWAYS
ALWAYS
L-ZNT
0 –55℃
AI-1001
ALWAYS
ALWAYS
ALWAYS
L-ZNH
0 –100%
AI-1002
ALWAYS
ALWAYS
ALWAYS
R-ZNT
0-55℃
AI-1003
ALWAYS
ALWAYS
ALWAYS
AI-1
0-10V
AI-1005
NONE
NONE
ALWAYS
AO-1
0 –100%
AO-1003
NONE
App:7,8,15,16,17
ALWAYS
AO-2
0 –100%
AO-1004
NONE
App: 8~18
NONE
BI-STATUS
Inactive
Active
BI-1011
ALWAYS
ALWAYS
ALWAYS
RLY-1
Close Open
BO-1012
App:0~5
App:7~14,18
ALWAYS

T9800 series BACnet MS/TP Networked Thermostat Controller Technical Bulletin
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RLY-2
Close Open
BO-1013
App:0~5
App:7,8,10~14,16~18
ALWAYS
RLY-3
Close Open
BO-1014
App:0~5
App:7~17
ALWAYS
RLY-4
Close Open
BO-1015
ALWAYS
NONE
NONE
RLY-5
Close Open
BO-1016
App:1~5
NONE
NONE
FRST-PRT
No
Yes
BV-1101
ALWAYS
ALWAYS
ALWAYS
TIO2-ESP
No
Yes
BV-1105
App:4
App:13
NONE
FH-FAN
No
Yes
BV-1108
App:3
App:12,16
NONE
MUTE
No
Yes
BV-1109
ALWAYS
ALWAYS
ALWAYS
ECM-RLY
No
Yes
BV-1110
NONE
App:9~17
NONE
ZN-T
0~55℃
AV-1201
ALWAYS
ALWAYS
ALWAYS
ZNT-SP
0~37℃
AV-1202
ALWAYS
ALWAYS
ALWAYS
OFFSET
-5～5℃
AV-1203
ALWAYS
ALWAYS
ALWAYS
ZN-H
0% ~ 100%
AV-1204
ALWAYS
ALWAYS
ALWAYS
UNOCC-CLG-
SP
22～32℃
AV-1206
ALWAYS
ALWAYS
ALWAYS
UNOCC-HTG-
SP
10～21℃
AV-1207
ALWAYS
ALWAYS
ALWAYS
FP-SP
0~20℃
AV-1208
ALWAYS
ALWAYS
ALWAYS
STG-DFFR
0 ~10 °C
AV-1211
App:3
App:12,16
NONE
SMPL-TM
1~99S
AV-1212
NONE
App:7,8,15~18
ALWAYS
PB
1~10
AV-1214
NONE
ALWAYS
KI
0~99
AV-1215
NONE
ALWAYS
HTRSS
1~5
AV-1217
App:0~6
App:9~14,17
NONE
DMP-OPEN-
TIME
0-99(75~174)
AV-1218
NONE
App:18
NONE
BL-TIMER
5~99
AV-1219
ALWAYS
ALWAYS
ALWAYS
TIMER-ON
0-1440
AV-1222
ALWAYS
ALWAYS
ALWAYS
TIMER-OFF
0-1440
AV-1223
ALWAYS
ALWAYS
ALWAYS
FAN-DELAY
0-99
AV-1224
App:0~5
ALWAYS
ALWAYS
MODE
Heat
Cool
Fan Only
Auto
MV-1302
ALWAYS
ALWAYS
ALWAYS
FAN-MODE
Low Speed
Med Speed
High Speed
Auto
MV-1303
App:0~5
ALWAYS
ALWAYS
OCC-S
Unoccupied
MV-1304
ALWAYS
ALWAYS
ALWAYS

T9800 series BACnet MS/TP Networked Thermostat Controller Technical Bulletin
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Occupied
FAN-DB
OFF
Low
MV-1308
App:0~5
ALWAYS
ALWAYS
UNOCC-FAN
OFF
Low
MV-1309
App:0~5
ALWAYS
ALWAYS
PWR-F-RSTT
OFF
ON
Recovery
MV-1310
ALWAYS
ALWAYS
ALWAYS
HTG-STG
One Heating Stage -
Fan Coil.
One Heating Stage -
Floor Heating;
Two heating stage;
MV-1311
App:3
App:12,16
NONE
ERROR
OK = No Faults;
E1 = Internal
Sensor Shorted;
E2 = Internal
Sensor Opened;
HI = High
Temperature;
LO = Low
Temperature;
E3 = Remote
Sensor Shorted;
E4 = Remote
Sensor Opened;
E5 = Dew Point
Risk;
E6 = Filter Alarm;
E7 = BI warning.
MV-1312
ALWAYS
ALWAYS
ALWAYS
STATUS
Off;
Cooling;
Heating;
Ventilating;
Idle;
Frost Protecting;
Warning
MV-1313
ALWAYS
ALWAYS
ALWAYS
UNIT-EN
Shutdown;
Enable
MV-1314
ALWAYS
ALWAYS
ALWAYS
TIO2ESP-CTL
Automatic
Manual
MV-1315
App:4
App:13
NONE
OCC-OVRD
No Override;
Occupied;
Unoccupied.
MV-1317
ALWAYS
ALWAYS
ALWAYS

T9800 series BACnet MS/TP Networked Thermostat Controller Technical Bulletin
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KEY-LOCK
No Lockout
Level 1 ->Lock all
keys
Level 2 ->Lock the
keys except Fan
Speed and Temp
Adjustment keys
Level 3 ->Lock the
ON/OFF and Clock
keys
Level 4 ->Lock the
keys except
ON/OFF key
MV-1322
ALWAYS
ALWAYS
ALWAYS
TEMP-DISP
Room Temperature
Setpoint
humidity
MV-1324
ALWAYS
ALWAYS
ALWAYS
4.2 Points descriptions
T9800
The T9800 device object.
L-ZNT
Internal temperature sensor.
L-ZNH
Internal humidity sensor.
R-ZNT
Remote temperature sensor.
AI-1
0~10VDC input.
AO-1
AO object to control the modulation valve.
AO-2
AO object to control the modulation valve.
BI-STATUS
Hardware binary input.
RLY-1
BO object to control the valve.
RLY-2
BO object to control the valve.
RLY-3
BO object to control the valve.
RLY-4
BO object to control the valve.
RLY-5

T9800 series BACnet MS/TP Networked Thermostat Controller Technical Bulletin
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BO object to control the valve.
FRST-PRT
Frost protection, enable or disable the frost protection function.
TIO2-ESP
When app support the TIO2-ESP, if the TIO2-ESP control by manual, user can enable or disable
TIO2-ESP output by this point.
FH-FAN
When app support floor heating, this point can disable or enable the fan speed function when only
floor heating work.
MUTE
User can control the buzzer for keys by this point to mute or not.
ECM-PLY
When app support ECM function, this point can enable or disable the related relay output for ecm
function.
ZN-T
The current temperature.
ZNT-SP
The current set point.
OFFSET
This point can correct the current temperature.
ZN-H
The current humidity.
UNOCC-CLG-SP
Working in un-occupancy, the device cooling mode set-point.
UNOCC-HTG-SP
Working in un-occupancy , the device heating mode set-point.
FP-SP
Frost set point, when the frost protection enable this point define condition to start the frost
protection.
STG-DFFR
Stage difference, when app support the FCU heating and floor heating work together. Setting this
point to start FCU heating function when floor heating can’t meet objective.
SMPL-TM
Sample time, when app support modulation control, this point define the control period.
PB
Proportion band.
KI
Integral parameter.
HTRSS
This point define the dead band for ON/OFF control.
DMP-OPEN-TIME
Damper open time, when app is the AHU, user can set this point for different damper requirement.
BL-TIMER
Black lighter time.

T9800 series BACnet MS/TP Networked Thermostat Controller Technical Bulletin
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TIMER-ON
This point to schedule the device unit enable in minutes.
TIMER-OFF
This point to schedule the device unit disable in minutes.
FAN-DELAY
When valve off, fan relay delay off time in seconds.
MODE
Device running mode.
FAN-MODE
Device running fan speed.
OCC-S
Occupancy status.
FAN-DB
When device work in idle, user can set this point to define fan mode.
UNOCC-FAN
Un-occupancy fan mode.
PWR-F-RSTT
When device power on, this point define the status of device.
HTG-STG
Heating state, when app support the floor heating, this point define the device work in only floor
heating, only FCU or support all.
ERROR
The error code for device.
STATUS
The running status of device.
UNIT-EN
This point define the device enable or disable.
TIO2ESP-CTL
When app support TIO2-EPS, this point define related relay work in manual or auto.
OCC-OVRD
This point can over write the occupancy status.
KEY-LOCK
This point can define the key lock status.
TEMP-DISP
This point define the meaning of value show in the UI.
5Output Mapping
Model
Application
Fan
low
Fan med
Fan
high
Cooling
valve
Heating
valve
Floor
heater
relay
TIO2/ESP
relay
ECM
relay
5R
2-pipe FCU
RLY-1
RLY-2
RLY-3
RLY-4
RLY-4
4-pipe FCU
RLY-1
RLY-2
RLY-3
RLY-4
RLY-5

T9800 series BACnet MS/TP Networked Thermostat Controller Technical Bulletin
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2-pipe 3-wire valve
FCU
RLY-1
RLY-2
RLY-3
RLY-4/5
RLY-4/5
2-pipe FCU with floor
heater
RLY-1
RLY-2
RLY-3
RLY-4
RLY-4
RLY-5
2-pipe FCU with
TiO2/ESP
RLY-1
RLY-2
RLY-3
RLY-4
RLY-4
RLY-5
water source heat
pump
RLY-1
RLY-2
RLY-3
RLY-4
RLY-5
Boiler
RLY-4
3R2A
2-pipe FCU, three
speed fan
RLY-1
RLY-2
RLY-3
AO-1
AO-1
4-pipe FCU, three
speed fan
RLY-1
RLY-2
RLY-3
AO-1
AO-2
2-pipe FCU, ECM fan
AO2
AO2
AO2
RLY-1
RLY-1
RLY-3
4-pipe FCU, ECM fan
AO2
AO2
AO2
RLY-1
RLY-2
RLY-3
2-pipe 3 wire (relay),
ECM fan
AO2
AO2
AO2
RLY-1/2
RLY-1/2
2-pipe FCU with floor
heater, ECM fan
AO2
AO2
AO2
RLY-1
RLY-1
RLY-2
RLY-3
2-pipe FCU with
TiO2/ESP, ECM fan
AO2
AO2
AO2
RLY-1
RLY-1
RLY-2
RLY-3
water source
heat pump, ECM fan
AO2
AO2
AO2
RLY-1
RLY-2
2-pipe FCU (0-
10VDC), ECM fan
AO2
AO2
AO2
AO1
AO1
2-pipe FCU (0-
10VDC) with floor
heater, ECM fan
AO2
AO2
AO2
AO1
AO1
RLY-2
RLY-3
2-pipe FCU (0-
10VDC) with
radiator, ECM fan
AO2
AO2
AO2
AO1
RLY-2
RLY-3
AHU
RLY1
(FAN)
RLY2
(DAMPER)
AO2
AO2