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Equitherm EQJW 125
User Manual
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Table of contents
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sauter Equitherm EQJW 125 User Manual

Heating controller
User's Manual EQJW 125
7001029003 T8
R
7001029003 T8 Sauter Components
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Table of contents
1.1 Introduction.................................................................................................................................................................... 5
1.2 Safety information.......................................................................................................................................................... 5
1.3 Key to the Operating Instructions .................................................................................................................................. 5
1.4 Abbreviations.................................................................................................................................................................5
2.1 Front view of the EQJW 125.......................................................................................................................................... 6
2.2 Rotary switch .................................................................................................................................................................6
2.3 Input knob...................................................................................................................................................................... 7
2.4 ESC button .................................................................................................................................................................... 7
2.5 Display........................................................................................................................................................................... 7
3.1 Operating the device for the first time............................................................................................................................ 8
3.1.1 Setting the time...................................................................................................................................................... 8
3.1.2 Setting the date...................................................................................................................................................... 8
3.2 Manual mode.................................................................................................................................................................9
3.2.1 Access to manual mode ........................................................................................................................................9
3.2.2 Set valve position................................................................................................................................................... 9
3.2.3 Set status of pump (on/off) for manual operation ..................................................................................................9
3.2.4 Ending manual mode........................................................................................................................................... 10
3.2.5 Checking measured values in manual mode....................................................................................................... 10
3.3 SERVice mode ............................................................................................................................................................ 10
3.3.1 Accessing SERVice mode ................................................................................................................................... 10
3.3.2 Viewing SERVice parameters.............................................................................................................................. 11
3.3.3 Changing SERVice parameters ........................................................................................................................... 11
3.3.4 List of SERVice parameters................................................................................................................................. 12
3.3.5 Explanations of SERVice parameters.................................................................................................................. 13
3.4 Communication mode.................................................................................................................................................. 16
3.4.1 Access to communication mode .......................................................................................................................... 16
3.4.2 Viewing the communication parameters.............................................................................................................. 16
3.4.3 Changing communication parameters ................................................................................................................. 17
3.4.4 List of communication parameters....................................................................................................................... 18
3.4.5 Explanations about individual communication parameters.................................................................................. 19
4.1 Operating modes ......................................................................................................................................................... 21
4.1.1 Display in automatic mode................................................................................................................................... 22
4.1.2 Display when OFF mode, reduced mode and normal mode are set ................................................................... 23
4.2 Entering the setpoint temperature in normal mode...................................................................................................... 24
4.3 Entering the setpoint temperature in reduced mode.................................................................................................... 24
4.4 Weekly switching programme...................................................................................................................................... 25
4.4.1 Calling up the weekly switching programme........................................................................................................ 25
4.4.2 Viewing switching commands .............................................................................................................................. 25
4.4.3 Entering a switching command............................................................................................................................ 25
4.4.4 Changing and deleting a switching command ..................................................................................................... 26
4.5 Calendar switching programme................................................................................................................................... 26
4.5.1 Calling up the calendar switching programme..................................................................................................... 26
4.5.2 Viewing switching commands .............................................................................................................................. 27
4.5.3 Entering a switching command............................................................................................................................ 27
4.5.4 Changing and deleting a switching command ..................................................................................................... 27
4.6 Temporary temperature change .................................................................................................................................. 28
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5.1 Device bus .................................................................................................................................................................. 29
5.1.1 Assigning addresses ........................................................................................................................................... 29
5.1.2 EDB 100 room operating unit .............................................................................................................................. 29
5.1.3 Sending and receiving outdoor temperatures ..................................................................................................... 29
5.1.4 Requesting and processing a heat requirement.................................................................................................. 29
5.1.5 Synchronising the time........................................................................................................................................ 29
5.2 Modbus communication .............................................................................................................................................. 30
5.2.1 Modbus bus wiring .............................................................................................................................................. 31
5.2.2 Modbus data points (holding register) ................................................................................................................. 31
5.2.3 Modbus data points (Coils).................................................................................................................................. 32
5.3 Modem operation ........................................................................................................................................................ 33
5.3.1 Modbus operation via modem ............................................................................................................................. 33
5.3.2 Sending SMS if there is a fault on the plant ........................................................................................................ 33
5.3.3 Displays for modem operation............................................................................................................................. 33
6.1 Displaying faults .......................................................................................................................................................... 34
6.1.1 Error list ............................................................................................................................................................... 34
6.1.2 Device status....................................................................................................................................................... 34
6.2 Reset functions ........................................................................................................................................................... 34
6.3 Actions to deal with faulty temperature readings ........................................................................................................ 34
7.1 Plant schematic........................................................................................................................................................... 35
7.2 General information..................................................................................................................................................... 35
9 Resistance values for the Ni1000 sensors....................................................................................................................... 36
13.1 Overview of technical data .......................................................................................................................................... 38
13.2 Overview of main functions ......................................................................................................................................... 39
14.1 List of SERVice parameters ........................................................................................................................................ 40
14.2 List of communication parameters .............................................................................................................................. 40
14.3 Weekly switching programme ..................................................................................................................................... 41
14.4 Calendar switching programme................................................................................................................................... 41
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1 General information

1.1 Introduction

Thank you for purchasing a heating controller from Sauter. The equithermEQJW 125 is a quality product from one of the leading manufacturers of controls products for heating, ventilation and air-conditioning. The equitherm temperature. In automatic mode, it uses switching commands from the weekly time-switch (weekly switching programme) to reduce the room temperature during the night (reduced mode) and switches to the normal temperature during the day. It is suitable for all types of building. A fixed basic programme (ex-works setting) ensures simple commissioning. If any adaptation to the heating plant is required, this is carried out using the SERVice parameters. An automatic change-over between summer and winter time relieves residents of the need to correct the time twice a year. The equitherm protective functions such as the anti-frost function and the anti-jamming function for the pump. Additional functions such as the automatic switch-off have been implemented. This ensures optimum convenience with the minimum use of energy for every plant. Analogue or digital room remote-control units can be connected to the EQJW 125, enabling easy remote operation of the controller from the living room. The communication interface allows the interconnection of several controllers, a connection to a control station and alarms on a mobile telephone via SMS messages.

1.2 Safety information

EQJW 125 is a compact weather-compensating heating controller with switched outputs to control the flow
EQJW 125 contains various
Particular care is required in order to prevent injuries, fire damage and damage to equipment. After the device has been installed by a specialist according to the Installation Instructions (MV505870) which are enclosed with it, please read these instructions on how to operate it. Local regulations must be followed during the installation. The controller is not a safety-relevant component. The anti-frost and anti-overheating functions and the limitation of the flow temperature do not replace the corresponding safety devices.

1.3 Key to the Operating Instructions

... means see Section ...
... means ex-works setting for the EQJW 125 (e.g. control values, switching times etc. specified by the manufacturer)
The Operating Instructions give a step-by-step explanation of the individual functions of the device, with the help of the following symbols:
... means flashing 'PROG' indicator on the display
... means the '09:00' indicator on the display (not flashing)
 .... 
... means key to be pressed ....

1.4 Abbreviations

CO = communication T
SE = SERVice T
SP = SERVice parameter T
T
T
T
T
T
T
= outdoor temperature T
A
= minimum limit for the setpoint for T
Fsmin
= flow temperature T
F
= setpoint for the flow temperature T
FS
= actual value for the flow temperature X
Fi
= maximum limit for the setpoint for T
Fsmax
F
F
T
X
= room temperature
R
= actual value for the room temperature
Ri
= maximum limit for the adjusting range for T
Rmax
= minimum limit for the adjusting range for T
Rmin
= setpoint for the room temperature
RS
= heating limit
S/W
Y = valve run-time
= proportional band
P
= setpoint
s
RS
RS
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2 Description of the controls

2.1 Front view of the EQJW 125

EQJW125
The device has a rotary switch with 10 positions, an input knob and a button.

2.2 Rotary switch

The meanings of the switch positions are as follows:
Operating modes:
Automatic mode according to switching programme
Controller is continuously in normal mode*)
Controller is continuously in reduced mode
Controller is continuously in back-up mode**)
Access to manual mode
Rotary switch
Display
Input knob
ESC button
Inputs:
Setpoint adjustment
Normal mode
Setpoint adjustment
Reduced mode
Enter
weekly and
calendar programme
Temperature change
with (without) time limit
Access to SERVice and
communication level
*) Normal mode corresponds to nominal mode as per EN12098-1. **) Back-up mode means that the heating is switched off. The anti-frost function is active.
7001029003 T8 Sauter Components

2.3 Input knob

With the help of the input knob, you can scroll through menus or select and change values. Unless explicitly stated otherwise, you can scroll through menus or change values in the form of a circular structure. There is no 'limit stop' for adjusting values or scrolling.
The input knob has a button function, i.e. it can be pushed. This movement is used to select the parameter that is currently displayed so as to make a change, or to confirm a flashing value, or to access a subordinate menu level.

2.4 ESC button

You can use the ESC button to cancel procedures or to return from a subordinate menu item to the next level up.

2.5 Display

The device has an LC-Display ( 2.1 ) which can show various items of information at the same time. The next illustration shows what the symbols mean:
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...
...
Times for normal mode on the current day
Time, date, setpoints, actual values, etc.
Automatic mode according to the weekly and calendar switching program; flashing: (un)limited temp. change
Controller is operating in normal mode
Controller is operating in reduced mode
Controller is operating in back-up mode; flashing: anti-frost function is active
An error has occurred (faulty sensor)
Heating medium pump is switched on
Final control element is open (
Display of setpoint temperature; flashing: display of actual temperature
Display of flow temperature
Display of outdoor temperature
Display of room temperature
Controller is in summer mode
Calendar switching programme is currently active
) or closed ( )
An error has occurred (see Section 6)
Floor-drying (operational heating) is active
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3 Commissioning

3.1 Operating the device for the first time

When you operate the equitherm EQJW 125 for the first time, you have to set the date and time. The controller is then basically ready to use. However, depending on the particular application, it may be necessary to change more settings after this.

3.1.1 Setting the time

Set the rotary switch to automatic mode; the time is shown
Press the input knob; the time flashes ...
Turn the input knob; the time is set

3.1.2 Setting the date

Press the input knob again; the new time is confirmed
Set the rotary switch to automatic mode; the time is shown
Turn the input knob until the date is shown (day/month and year are shown alternately)
Press the input knob; the number of the year flashes ...
Turn the input knob; year is changed
Press the input knob; year is confirmed and day/month are shown
Turn the input knob; the date is changed
Push the input knob; new date is confirmed
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3.2 Manual mode

In manual mode, you can control the plant by hand during installation or in case of a fault. No regulating takes place in manual mode. The pump is switched on or off. The valve is opened and closed according to the specified values. Before you can work in manual mode, this mode has to be enabled in SERVice mode (see Section 3.3). When the switch position is selected, the mixer initially retains its current position and the heating circulation pump is switched on. The current statuses of the controller outputs (pump on, mixer open, mixer closed) are shown on the lower margin of the display, as usual (see Section 2).

3.2.1 Access to manual mode

Set the rotary switch to manual mode

3.2.2 Set valve position

Push the input knob; i.e. select the 'Open final control element' option on the menu
Turn the input knob; value for percentage opening of the final control element
Push the input knob; confirm the value

3.2.3 Set status of pump (on/off) for manual operation

Turn the input knob; select the 'Heating medium pump output' option on the menu
Push the input knob; select the menu option
Turn the input knob; specify pump output (0= pump off, 1=pump on)
Push the input knob; the setting is accepted
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3.2.4 Ending manual mode

Manual mode is ended as soon as you turn the rotary switch to another position.

3.2.5 Checking measured values in manual mode

Turn the input knob until the 'INFO' menu option appears on the display
Push the input knob; select the 'INFO' menu option
...
Turn the input knob; the individual values are shown. The display loop is the same as for the 'automatic mode' switch position
Push the 'ESC' button; exit from the 'INFO' menu option

3.3 SERVice mode

In SERVice mode, a specialist can adapt the basic settings of the EQJW 125 to the plant so as to meet specific requirements. On this subject, also note the Installation Instructions (MV 505870) enclosed with the EQJW 125.
SERVice mode must only be enabled by a specialist. Incorrect parameterisation (setting) of the heating controller can cause major faults on the plant or injuries to people and damage to the plant.
Some of the parameters cannot be changed - they can only be viewed (version number, status information).

3.3.1 Accessing SERVice mode

Set the rotary switch to the Service position
Push the input knob
Turn the input knob, display the code
Push the input knob; the first SERVice parameter is shown
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3.3.2 Viewing SERVice parameters

Turn the input knob; Select the SERVice parameter that you want
Push the input knob; the value for the parameter is shown
To leave the value unchanged, exit from the display by pushing ESC

3.3.3 Changing SERVice parameters

Turn the input knob; Select the SERVice parameter that you want
Push the input knob; the value for the parameter is shown
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Turn the input knob; the value for the parameter is changed
Push the input knob; the new value is confirmed
Push the ESC button to cancel the procedure. The value is not accepted unless it has already been confirmed.
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3.3.4 List of SERVice parameters

Parameter Description Range
SP01 Software version Y.XX (read only) SP02 0 Device status (error coding, read only) 0…1031 1 SP04 0 Software reset 0…3 1
0 = no reset 1 = default SERVice + communication parameters 2 = default switching commands 3 = default SERVice + communication parameters +
switching commands
SP05 0 Manual mode 0...1 1
0 = manual mode not enabled 1 = manual mode enabled
SP06 3 Output signal / control model 2...3 1
2 = PWM output 3 = 3-pt output
SP07 2 Room temperature detection 0...3 1
0 = no room temperature detection 1 = connection of NI1000 room sensor 2 = Connection for EGS 52/15 or EGT 333 with room sensor 3 = Connection for EGS 52/15 or EGT 333 w/o room sensor
SP08 0 Room temperature connection 0...1 1
0 = not enabled
1 = enabled SP09 20 Scanning time for room temperature if connected, in minutes 1...20 1 SP10 0 Room temperature correction in K –6.0...6.0 0.1 SP11 0 Outdoor temperature correction in K –9.9...9.9 0.1 SP12 40 Proportional band PI controller in K 2...100 1K SP13 240 Reset time PI controller in sec 5...1000 5 SP14 120 Valve run-time in sec 30...960 15 SP15 5 Minimum limit for flow temperature in °C 5...100 1K SP16 75 Maximum limit for flow temperature in °C 20...130 1K SP17 1.4 Slope of heating curve 0.0...5.0 0.1 SP18 15 Heating limit / [°C] 0...39 1 SP19 –16 Design temperature / [°C] –50...0 1 SP20 1 Anti-frost function 0...1 1
0 = not enabled
1 = enabled SP21 0 Anti-jamming function for the pump 0...1 1
0 = not enabled
1 = enabled SP22 0 Calendar programme 0...1 1
0 = not enabled
1 = enabled SP23 25.10 Summer/winter time change-over 01.01...31.12 SP24 25.03 Winter/summer time change-over 01.01...31.12
P23 = P24 means no summer/
winter time change-over SP60 0 Floor drying 0;7d;8;9
0 = not enabled
7d = enabled
8 = malfunction
9 = successfully completed
Step
value
0,7d;8;9
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3.3.5 Explanations of SERVice parameters

SP01 Show software version The number of the controller's software version is displayed.
SP02 Display device status SERVice parameter 2 is used to read the device status of the EQJW 125. A value of 0 means that the EQJW 125 is operating without any faults. The coding for faults is shown in Section 6.1.1. Once the fault has been rectified, the value for the SERVice parameter is reset automatically. Remark: this coded description of errors is primarily used for fault signalling via bus, modem or SMS. You can easily read faults directly on the controller in the ERROR display (Section 6.1).
SP04 Software reset Switching commands and / or SERVice/communication parameters are reset to the ex-works setting. To do this, the value of the SERVice parameter has to be changed and confirmed. The EQJW 125 then performs the relevant reset and assigns value 0 to the parameter.
SP05 Manual mode SERVice parameter P05 is used to disable or enable manual mode. If the value of the parameter is 0, manual mode is disabled.
SP06 Output signal / control model This parameter is used to select the control signal for the final control element. You can choose between a signal for 3-point control and a PWM output (Pulse – Pause) with a fixed period of 64 seconds. If the PWM signal is used, the signal is available on terminal 4. Caution: when the PWM output is used, the functions for limitation of the flow temperature are no longer effective.
SP07 Room temperature detection Various types of room temperature sensor can be connected:-
0 = no room temperature detection 1 = connection of room sensor NI1000 2 = Connection for EGS 52/15 or EGT 333 with room sensor 3 = Connection for EGS 52/15 or EGT 333 without room sensor
It is possible to switch over the operating mode of the controller from a room user panel. This can also be done from a control station via Modbus. In the event of contradictory commands, the following priority applies: direct settings on the controller take precedence over the room user panel and Modbus. Settings on the room control device take precedence over Modbus commands.
SP08 Room temperature connection A room temperature sensor (resistance sensor Ni1000 or device bus) is a requirement for this function. The flow temperature is changed, in divergence from the setpoint according to the heating characteristic, if the room temperature in the reference room diverges from the room setpoint. The change in the flow temperature is limited to a maximum of ± 30K.
SP09 Scanning time for room temperature if connected When the room temperature connection is active, this SERVice parameter can be used to set a period within which the flow setpoint may be altered once only. A higher value is better for unresponsive buildings and heating systems than for light construction types with responsive heating systems. This period should not be too short, otherwise the control system may hunt. The algorithm prevents hunting by changing the flow setpoint more quickly (at a rate of ±2 K within a scanning period) when the deviation of the room temperature is diminishing than when it is increasing (at a rate of±1 K within a scanning period). If the deviation of the room temperature is less than 0.25 K, the flow setpoint is not altered. In most cases, the factory setting (20 minutes) provides satisfactory results for residential buildings.
: Open windows or other cooling or heating loads may have an effect on controllability. If these influences suddenly cease,
N.B. the room temperature may briefly be exceeded or undercut in the opposite direction.
SP10 Correction of room temperature The measured value for the room temperature is adjusted with the help of this parameter. The value that is entered is added to the measured value for the room temperature.
SP11 Correction of outdoor temperature The measured value for the outdoor temperature is adjusted with the help of this parameter. The value that is entered is added to the measured value for the outdoor temperature.
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SP12 Proportional band SERVice parameter 12 sets the proportional band (X
) of the PI control for the flow temperature in K.
P
SP13 Integral action time SERVice parameter 13 determines the integral action time (TN) of the PI control for the flow temperature in seconds.
SP14 Valve run-time Valves with a motorised actuator need a certain time (known as the valve run-time) to open or close completely. This SERVice parameter is used to set the equitherm
EQJW 125 to the run-time for the valve drive that is being used. Optimal control
quality and various protective functions are only ensured if the valve run-time is set correctly.
SP15, SP16 Minimum and maximum limits for flow temperature The setpoint flow temperature can be limited. The value of SERVice parameter SP15 sets the lower limit in this case, and the value of SERVice parameter SP16 sets the upper limit. Parameters SP15 and SP16 specify a maximum and minimum flow temperature.
SP17 Slope of heating characteristic The flow temperature is controlled according to the outdoor temperature. The heating characteristic in the controller determines the setpoint for the flow temperature in relation to a given outdoor temperature.
3,0 3,5 4,0
2,0
1,8
1,6
1,4
1,2 1,0
0,8
0,6
0,4
-20 -15 -10 -5 0510 15
2,5
SP17: Slope
[°C]
Outdoor temperature
1
-
0
100 [°C]
Guideline for the slope
90
of the heating characteristic:
80
70
1.4 for hot water
60
50
40
30
I
T
5
-
radiator heaters
)
(
Flow temperature
1.0 for low temperature heaters
]
0.6 for floor heaters
C
°
[
5
SP18 Heating limit If the averaged outdoor temperature is higher than the heating limit, heating operation is stopped. As soon as the value falls back below the heating limit, heating operation is resumed. To avoid frequent status changes, a hysteresis of 1K is taken into account in both cases. The outdoor temperature required for control purposes can either be measured with an outdoor temperature sensor or can be received via a connected device bus. The measured outdoor temperature is averaged over 21 hours for the heating limit function in order to reduce the influence of brief fluctuations.
SP19 Design temperature If the current outdoor temperature is less than the design temperature, the EQJW 125 heating controller will no longer switch to reduced operating mode but will remain in normal operating mode.
SP20 Anti-frost The anti-frost function becomes active if the outdoor temperature falls below the anti-frost limit (= +3°C). If the outdoor temperature rises above 4°C again, the function is ended. The flashing
symbol indicates that the anti-frost function is active. It forces the circulating pump for the heating circuit to switch on. The setpoint for the flow temperature of the heating circuit is set at +10°C unless it is already higher. In addition, regardless of the outdoor temperature, temperature TF (flow sensor) is
monitored to a limit value of 5°C. If SP20=0, the function can be disabled and the controller will no longer offer an anti-frost function in this case!
SP21 Anti-jamming function for the pump If this function is enabled, a daily check is carried out (at 0.00 hours) to determine whether the pump was operated in the last 24 hours. If not, it is operated for one minute to prevent jamming.
7001029003 T8 Sauter Components
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