TAC 2112 User manual

TAC 2112
Manual
0-004-7459-3 (GB), 1999-08-01
T1 P1

TAC 2112, Manual Contents
TAC AB, 1999-08-01 0-004-7459-3 (GB), i
TAC 2112
Manual
Subject to modification.
© 1999 TAC AB
Contents
1 About this manual........................................................................................................................................ 1:1
1.1 Overview....................................................................................................................................... 1:1
1.2 How to use this manual................................................................................................................. 1:1
1.3 Associated documentation ............................................................................................................ 1:2
2 TAC 2112 heating controller ...................................................................................................................... 2:1
3 Using the operator’s panel .......................................................................................................................... 3:1
3.1 Introduction................................................................................................................................... 3:1
3.2 What is shown in the display window? ......................................................................................... 3:1
3.2.1 Parameter numbers and parameter values.................................................................... 3:2
3.2.2 Operating modes.......................................................................................................... 3:3
3.2.3 Weekly program .......................................................................................................... 3:4
3.2.4 Outputs from the controller.......................................................................................... 3:5
3.2.5 Alarm........................................................................................................................... 3:5
3.3 How are the buttons used? ............................................................................................................ 3:6
4 Day-to-day usage.......................................................................................................................................... 4:1
4.1 Introduction................................................................................................................................... 4:1
4.2 Reading temperatures.................................................................................................................... 4:1
4.3 Setting temperatures...................................................................................................................... 4:2
4.4 Adjusting the reset curve............................................................................................................... 4:2
4.5 Setting the time schedule for daytime/night operation.................................................................. 4:3
4.5.1 Weekly program for night setback of heat................................................................... 4:3
4.5.2 Reduction in heating during a holiday period .............................................................. 4:3
4.5.3 Weekly program for external units .............................................................................. 4:4
4.6 Reading alarms ............................................................................................................................. 4:5
4.7 Setting the operating mode ........................................................................................................... 4:5
4.8 Setting the clock............................................................................................................................ 4:6
5 Installation.................................................................................................................................................... 5:1
5.1 Assembly ...................................................................................................................................... 5:1
5.2 Connection.................................................................................................................................... 5:6
5.3 Starting up..................................................................................................................................... 5:10
6 Troubleshooting ........................................................................................................................................... 6:1

TAC 2112, Manual Contents
ii, 0-004-7459-3 (GB) TAC AB, 1999-08-01
7 Functional description ................................................................................................................................. 7:1
7.1 Introduction................................................................................................................................... 7:1
7.2 Controller operating modes........................................................................................................... 7:1
7.3 Heat control................................................................................................................................... 7:4
7.3.1 Functional diagram ...................................................................................................... 7:4
7.3.2 Damped outdoor temperature....................................................................................... 7:5
7.3.3 Reset curve for outdoor compensation......................................................................... 7:5
7.3.4 Automatic adjustment of the reset curve...................................................................... 7:6
7.3.5 Supply controller.......................................................................................................... 7:8
7.3.6 Room controller ...........................................................................................................7:9
7.3.7 Return temperature limitation ...................................................................................... 7:10
7.3.8 Remote heating control (SPC) ..................................................................................... 7:11
7.3.9 Pump control................................................................................................................ 7:12
7.3.10 Variable night setback................................................................................................ 7:12
7.3.11 Morning heating......................................................................................................... 7:13
7.3.12 Reduced daytime operation (optimised stop)............................................................. 7:16
7.3.13 Extended daytime operation....................................................................................... 7:17
7.3.14 Forced night setback .................................................................................................. 7:17
7.4 Clock............................................................................................................................................. 7:18
7.5 Time schedules.............................................................................................................................. 7:19
7.6 Alarm ............................................................................................................................................ 7:19
7.7 Memory backup ............................................................................................................................ 7:20
7.8 Adjustment of sensor inputs.......................................................................................................... 7:20
7.9 Manual control.............................................................................................................................. 7:20
7.10 Test functions.............................................................................................................................. 7:21
8 Technical data .............................................................................................................................................. 8:1
Appendix A, Commissioning protocol/list of parameters ............................................................................ A:1
Index ............................................................................................................................................................... Index:1

TAC 2112, Manual About this manual
TAC AB, 1999-08-01 0-004-7459-3 (GB) 1:1(2)
1 About this manual
1.1 Overview
Chapter 2, TAC 2112 heating controller
This gives a brief introduction to the controller.
Chapter 3, Using the operator’s panel
This provides a more detailed explanation of how to read off and set
the values using the buttons and the display window.
Chapter 4, Day-to-day usage
This chapter provides you with sufficient information to be able to
use the controller during normal operation.
Chapter 5, Installation
This chapter shows you how to assemble, connect and commission
the controller.
Chapter 6, Troubleshooting
This chapter contains actions that you yourself can implement in
order to locate and rectify any faults in the control system.
Chapter 7, Functional description
Here you will find a detailed description of all the functions and
parameters of the controller.
Chapter 8, Technical data
All the technical data for the TAC 2112 can be found here.
Appendix A, Commissioning protocol/list of parameters
Here you will find a commissioning protocol, which also provides
support for adjustment of the controller. All the parameters in the
controller are also defined.
Index
At the end of this manual is an index with page references.

TAC 2112, Manual About this manual
1:2(2), 0-004-7459-3 (GB) 1999-08-01, TAC AB
1.2 How to use this manual
The TAC 2112 Manual describes all the functions and procedures
necessary to install, adjust and use the controller.
The TAC controller, as well as other products from the 2000-range,
should not be used for purposes other than intended for.
During normal operation
Before reading off or setting temperatures and other parameters
during normal operation, it is sufficient to read Chapter 3, “Using
the operator’s panel” and Chapter 4, “Day-to-day usage”. You can
also use the Quick Reference on the front of the controller.
During installation and commissioning
Before installing and commissioning the controller, you should read
Chapter 5, “Installation”. The enclosed document entitled
Installation instructions may also be used. A commissioning protocol
is supplied with the controller, but this can also be found in
Appendix A.
During troubleshooting
In the event of a fault with the controller you should read Chapter 3,
“Using the operator’s panel”, Chapter 4, “Day-to-day usage”, and
Chapter 6, “Troubleshooting”.
1.3 Associated documentation
Enclosed documentation
The documentation listed below is supplied with the controller. It
contains all the information you need to install and commission the
controller.
• Installation instructions for the TAC 2112 (part number
0FL-3678)
• Commissioning protocol for the TAC 2112 (part number
0FL-3679)
• TAC 2112 Quick Reference (part number 0FL-3672)

TAC 2112, Manual TAC 2112 Heating Controller
TAC AB, 1999-08-01 0-004-7459-3 (GB), 2:1(2)
2 TAC 2112 Heating Controller
The TAC 2112 is a digital heating controller for controlling
waterborne heat in buildings.
The radiator circuit is controlled according to an outdoor temperature-
compensated reset curve, with or without a reference sensor.
The controller contains a real time clock and can be set for weekly
and yearly time schedules, along with powerful functions for optimum
energy saving.
It is very simple to read and set temperatures and other parameters.
The display window provides clear information with digits and
symbols.
The controller can be mounted on a norm rail, in a panel or on a wall.

TAC 2112, Manual TAC 2112 Heating Controller
2:2(2), 0-004-7459-3 (GB) 1999-08-01, TAC AB
The TAC 2112 is designed to control heat in apartment buildings,
offices, schools and other large buildings.
Installation with district heating
The controller operates both with and without reference sensors.
However, some optimisation functions require a reference sensor to
be installed.
Installation with heating boiler

TAC 2112, Manual Using the Operator´s Panel
TAC AB, 1999-08-01 0-004-7459-3 (GB), 3:1(6)
3 Using the Operator’s Panel
3.1 Introduction
This chapter shows you how to use the buttons on the operator’s panel
and the display window to read off and set parameters such as
temperatures.
3.2 What is shown in the display window?
The display window provides you with information from the heating
installation in the form of digits and symbols.
1
2
3
4
5
6
7 8 9 1011121314151617 18
0
23
22
21
20
19
24
!
K1 K2 K3 K4
MO TU WE TH FR SA
°C°F
AM
SU
P 00 12:00
Parameter
number
Parameter
value
24-hour
time bar
Alarm
Pump
Morning
heating
Heating
off
Fixed night
setback
Timed
operation
Fixed
daytime
Manual
control
Buzzer
alarm Weekly
program 2
Heating
valve
opens
Heating
valve
closes
operation
Information in the display window

TAC 2112, Manual Using the Operator´s Panel
3:2(6), 0-004-7459-3 (GB) 1999-08-01, TAC AB
3.2.1 Parameter numbers and parameter values
The controller has a list of 100 parameters numbered from 0 to 99.
Some of these parameters can be set (such as the setpoint for supply
temperature), while others can just be read (such as the outdoor
temperature). Some parameters cannot be displayed if the
corresponding function is blocked. For example, the room
temperature will not be displayed if there is no reference sensor.
The parameter numbers and parameter values in the display window
constitute a “window” to the list of parameters.
P 18 Reset curve (x1)
P 19 Reset curve (y0)
P 20 Reset curve (y1)
1
2
5
6
7 8 9 1011121314151617
18
0
23
22
19
24
K1
MO
3
4P 22 21 20
°C
10.0
P 24 P band, supply c.
P 25 Run time, actuator
P 26 Max. increase rate
List of parameters
Display window
Parameter
number
Parameter
value
Window
up
Window
down
The display window constitutes a window to the list of parameters
The buttons and are used to move the “window” up and down
over the list of parameters.

TAC 2112, Manual Using the Operator´s Panel
TAC AB, 1999-08-01 0-004-7459-3 (GB), 3:3(6)
3.2.2 Operating modes
The different operating modes of the controller are shown in the
display window using the symbols below.
1
2
3
4
5
6
7 8 9 1011121314151617
18
0
23
22
21
20
19
24
!
K1 K2 K3 K4
MO TU WE TH FR SA
°C°F
AM
SU
P 00 12:00
Operating mode
The symbols for the operating mode of the controller
The symbols have the following meanings:
Heating off
Fixed night setback
Timed operation
Fixed daytime operation
Manual control
Heat reduction during holiday period
Forced night setback from external connection
(flashing moon)
Extended daytime operation from external
connection (flashing sun)
How to set the operating mode is described in chapter 4. See chapter 7
for a more detailed description of the operating modes.

TAC 2112, Manual Using the Operator´s Panel
3:4(6), 0-004-7459-3 (GB) 1999-08-01, TAC AB
3.2.3 Weekly program
The weekly program for daytime and night operation is displayed in
the form of a 24-hour time bar from 00:00 to 24:00. Filled segments
show the time of day when daytime operation is to be effected.
1
2
3
4
5
6
7 8 9 1011121314151617
18
0
23
22
21
20
19
24
!
K1 K2 K3 K4
MO TU WE TH FR SA
°C°F
AM
SU
P 00 12:00
24-hour time barWeekdays
The symbols for weekly programs
Each segment on the 24-hour bar equals 30 minutes. A filled-in
segment signifies daytime operation. Segments which are not filled in
signify night setback.
The days of the week are included beneath the clock. They show the
day of the week to which the 24-hour bar refers.
• MO = Monday
• TU = Tuesday
• WE = Wednesday
• TH = Thursday
• FR = Friday
• SA = Saturday
• SU = Sunday
How to set the weekly program is described on in chapter 4.
See chapter 7 for a more detailed description of time schedules.

TAC 2112, Manual Using the Operator´s Panel
TAC AB, 1999-08-01 0-004-7459-3 (GB), 3:5(6)
3.2.4 Outputs from the controller
The controller has a number of outputs for the control of external
units (such as the actuator for the heating valve). When an output is
activated, its symbol is displayed in the display window.
1
2
3
4
5
6
7 8 9 10 11 12 13 14 15 16 17
18
0
23
22
21
20
19
24
!
K1 K2 K3 K4
MO TU WE TH FR SA
°C°F
AM
P 00 12:00
Pump Morning
heating Buzzer
alarm
Weekly
program 2
Heating
valve
opens
Heating
valve
closes
SU
The symbols for outputs from the controller
3.2.5 Alarm
In the event of an alarm, a flashing alarm symbol is displayed in the
display window.
1
2
3
4
5
6
7 8 9 1011121314151617
18
0
23
22
21
20
19
24
!
K1 K2 K3 K4
MO TU WE TH FR SA
°C°F
AM
SU
P 00 12:00
Alarm
The alarm symbol
How to read off alarms is described in chapter 4. See chapter 7 for a
more detailed description of the alarm function in the controller.

TAC 2112, Manual Using the Operator´s Panel
3:6(6), 0-004-7459-3 (GB) 1999-08-01, TAC AB
3.3 How are the buttons used?
The controller has five buttons beneath the display window.
Select parameter
weekly program Increase/decrease
parameter value
Da
y
time
/
ni
g
ht operation
The buttons on the operator’s panel
The and buttons are used to select a parameter.
The and buttons are used to change a parameter value.
The button is used to toggle between a filled and a blank
segment in the 24-hour clock.
To save a changed parameter value, press again.

TAC 2112, Manual Day-to-day Usage
TAC AB, 1999-08-01 0-004-7459-3, 4:1(6)
4 Day-to-day Usage
4.1 Introduction
This chapter provides sufficient information for you to read off and
set temperatures and other parameters during normal operation.
All parameters and functions are described in detail in Chapter 7,
“Functional description”.
4.2 Reading temperatures
Procedure for reading a temperature:
1
2
3
4
5
6
7 8 9 10 11 12 13 14 15 16 17
18
0
23
22
21
20
19
24
K1
P 01 14.7 °C
1 Select parameter number (P No.) by pressing or as
shown in the list below. Increase or decrease the number by
pressing or .
2 Hold down the button for fast increase/decrease.
3 Press and at the same time to get to P 15 – P 99.
4 Read the value.
Temperature P No.
Outdoor temperature P 01
Damped outdoor temperature P 02
Supply temperature P 03
Supply temperature, calculated setpoint P 04
Room temperature P 07
Room temperature, calculated setpoint P 08
Return temperature, heating circuit P 13

TAC 2112, Manual Day-to-day Usage
4:2(6), 0-004-7459-3 (GB) 1999-08-01, TAC AB
4.3 Setting temperatures
Procedure for setting a temperature:
1
2
3
4
5
6
7 8 9 10 11 12 13 14 15 16 17
18
0
23
22
21
20
19
24
K1
P 06 -10.0 °C
1 Select parameter number (P No.) by pressing or as
shown in the list below. The parameter number is increased and
decreased by pressing or . Hold down the button for fast
increase/decrease.
2 Press and at the same time to get to P 15 – P 99.
3 Change the temperature by pressing or .
4 Exit by pressing .
Temperature P No.
Night setback of supply temperature P 06
Room temperature, setpoint day P 09
Room temperature, setpoint night P 10
4.4 Adjusting the reset curve
Procedure for adjusting the reset curve:
1
2
3
4
5
6
7 8 9 10 11 12 13 14 15 16 17
18
0
23
22
21
20
19
24
K1
P 23 80.0 °C
1 Select parameter number (P No.) by pressing or as
shown in the figure below. Increase and decrease by pressing
or . Hold down the button for fast increase/decrease.
2 Press and at the same time to get to P 15 – P 99.
3 Adjust the curve point by pressing or .
4 Exit by pressing .
10
20
30
40
50
60
80
-10 0 5-5 10 15 20-15 25-20-25
P 19
P 21
P 20
P 18
70
-30
P 23
P 22
P 05
Parallel
shift ±°C
Damped
Reset curve parameters
See chapter 7 for a more detailed description of the function of the
reset curve.

TAC 2112, Manual Day-to-day Usage
TAC AB, 1999-08-01 0-004-7459-3, 4:3(6)
4.5 Setting the time schedule for
daytime/night operation
4.5.1 Weekly program for night setback of heat
When the controller is supplied, it is set for night setback of heat
between 22:00 and 06:00 for all days of the week. See chapter 7 for a
more detailed description of the time schedule.
Procedure for changing the weekly program:
1
2
3
4
5
6
7 8 9 10 11 12 13 14 15 16 17
18
0
23
22
21
20
19
24
K1
MO
P 14
1 Select parameter number P 14 by pressing or . The
parameter number is increased and decreased by pressing or
.
2 When the parameter number has been selected, the 24-hour time
bar will be displayed showing “MO” for Monday.
3 Scroll in the 24-hour time bar by pressing or until you
get to the segment to be changed. The segment will flash.
4 Change the half-hour segments by pressing . A filled-in
segment will result in daytime operation. When a segment has
been changed, the next segment will start to flash.
5 Scroll on to “TU” for Tuesday by pressing .
6 Change the half-hour segments for Tuesday by pressing .
7 Repeat steps 5 and 6 for each day of the week.
8 Exit by pressing or .
4.5.2 Reduction in heating during a holiday period
It is possible to program up to six holiday periods. During a holiday
period, the heating is controlled at the setpoint for the night. No
holiday periods are programmed prior to delivery. See chapter 7 for a
more detailed description of time schedules.
Procedure for setting a holiday period:
1
2
3
4
5
6
7 8 9 10 11 12 13 14 15 16 17
18
0
23
22
21
20
19
24
K1
P 63 1
1 Select parameter number P 63 by pressing or . The
parameter number is increased and decreased by pressing or
. Press and at the same time to get to P 15 – P 99.
2 Select a holiday period (1–6) by pressing or .
1
2
3
4
5
6
7 8 9 10 11 12 13 14 15 16 17
18
0
23
22
21
20
19
24
K1
P 64 01.01
3 Go to P 64 by pressing .
4 Set the start date (month.day) by pressing or . Hold the
button down for fast increase/decrease.

TAC 2112, Manual Day-to-day Usage
4:4(6), 0-004-7459-3 (GB) 1999-08-01, TAC AB
1
2
3
4
5
6
7 8 9 10 11 12 13 14 15 16 17
18
0
23
22
21
20
19
24
K1
P 65 01.01
5 Go to P 65 by pressing .
6 Set the end date (month.day) by pressing or .
7 Exit by pressing .
Procedure for deleting a holiday period:
1
2
3
4
5
6
7 8 9 10 11 12 13 14 15 16 17
18
0
23
22
21
20
19
24
K1
P 63 1
1 Select parameter number P 63 by pressing or . The
parameter number is increased and decreased by pressing or
. Press and at the same time to get to P 15 – P 99.
2 Select a holiday period (1–6) by pressing or .
1
2
3
4
5
6
7 8 9 10 11 12 13 14 15 16 17
18
0
23
22
21
20
19
24
K1
P 64 01.00
3 Go to P 64 by pressing .
4 Change the start date to day 0 in the month (month.00) by
pressing or . Hold the button down for fast
increase/decrease.
5 Exit by pressing .
It is also possible to change the end date to day 0 to delete a holiday
period.
4.5.3 Weekly program for external units
This weekly program can be used to control an external unit (such as
lighting). The controller is set for night operation on all days of the
week when it is delivered. See chapter 7 for a more detailed
description of time schedules.
Procedure for changing the weekly program:
1
2
3
4
5
6
7 8 9 10 11 12 13 14 15 16 17
18
0
23
22
21
20
19
24
K1
MO
P 61
1 Select parameter number P 61 by pressing or . The
parameter number is increased and decreased by pressing or
. Press and at the same time to get to P 15 – P 99.
2 When the parameter number has been selected, the 24-hour
clock will be displayed showing “MO” for Monday.
3 Scroll in the 24-hour time bar by pressing or until you
get to the segment to be changed. The segment will flash.
4 Change the half-hour segments by pressing . A filled-in
segment will result in daytime operation. When a segment has
been changed, the next segment will start to flash.
5 Scroll on to “TU” for Tuesday by pressing .
6 Change the half-hour segments for Tuesday by pressing .
7 Repeat steps 5 and 6 for each day of the week.
8 Exit by pressing or .

TAC 2112, Manual Day-to-day Usage
TAC AB, 1999-08-01 0-004-7459-3, 4:5(6)
4.6 Reading alarms
When an alarm has been triggered, the !symbol in the display
window will flash. The display window will also specify what has
triggered the alarm.
Procedure for reading off alarms:
1
2
3
4
5
6
7 8 9 10 11 12 13 14 15 16 17
18
0
23
22
21
20
19
24
K1
P 82 1
!
1 Select parameter number (P No.) by pressing or as
shown in the list below. The parameter number is increased and
decreased by pressing or .
2 Press and at the same time to get to P 15 – P 99.
3 Hold down the button for fast increase/decrease.
4 Read the value. 1=ALARM, 0=NO ALARM
The alarm is reset automatically when the reason for it no longer exists.
Temperature P No.
Circulation pump P 82
Supply temperature P 83
4.7 Setting the operating mode
The controller usually operates in a timed manner; that is to say, a
weekly program and yearly program determine whether the supply
temperature or room temperature should be controlled to a daytime or
night setpoint. The controller can also be set to other operating modes.
See chapter 7 for a more detailed description of the operating modes.
Procedure for setting an operating mode:
1
2
3
4
5
6
7 8 9 10 11 12 13 14 15 16 17
18
0
23
22
21
20
19
24
K1
TU
P 00 12:35
1 Select parameter number P 00 by pressing or . The
parameter number is increased and decreased by pressing or
.
2 Change the operating mode by pressing or .
3 Confirm by pressing .
Operating mode Symbol
Heating off
Fixed night setback
Timed operation
Fixed daytime operation
Manual control

TAC 2112, Manual Day-to-day Usage
4:6(6), 0-004-7459-3 (GB) 1999-08-01, TAC AB
4.8 Setting the clock
To display the current time on the clock, select parameter P 00
(usually displayed). The clock must be set after a power cut lasting
more than 48 hours. See chapter 7 for a more detailed description of
the clock.
Procedure for setting the time:
1
2
3
4
5
6
7 8 9 10 11 12 13 14 15 16 17
18
0
23
22
21
20
19
24
K1
P 15 0:00
1 Select parameter number P 15 by pressing or . The
parameter number is increased and decreased by pressing or
. Press and at the same time to get to P 15 – P 99.
2 Change the clock by pressing or . Hold down the button
for fast increase/decrease.
3 Exit by pressing .
Procedure for setting the date:
1
2
3
4
5
6
7 8 9 10 11 12 13 14 15 16 17
18
0
23
22
21
20
19
24
K1
P 16 01.01
1 Select parameter number P 16 by pressing or . The
parameter number is increased and decreased by pressing or
. Press and at the same time to get to P 15 – P 99.
2 Change the date (month.day) by pressing or . Hold down
the button for fast increase/decrease.
3 Exit by pressing .
Procedure for setting the year:
1
2
3
4
5
6
7 8 9 10 11 12 13 14 15 16 17
18
0
23
22
21
20
19
24
K1
P 17 1995
1 Select parameter number P 17 by pressing or . The
parameter number is increased and decreased by pressing or
. Press and at the same time to get to P 15 – P 99.
2 Change the year by pressing or .
3 Exit by pressing .
Days of the week are calculated automatically by the controller and do not,
therefore, need to be set.