Wolf WRS-K User manual

WOLF GMBH / POSTFACH 1380 / D-84048 MAINBURG / TEL. [phone] / FAX [phone] / www.WOLF.eu
Part no.: 3062941_201707 Subjecttotechnicalmodications
GB
Installationandoperatinginstructions
LON interface for WRS-K
(Translation of the original)

23062941_201707
1.Contents
Contents
1. Contents ..............................................................................2
2. Documentation information..................................................3
3. Standards and directives.....................................................4
4. Installation ........................................................................5-6
5. Connection to a LON-Works network..................................7
6. LED displays........................................................................7
7. Network variables...........................................................8-14
8. Specication ......................................................................15

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Danger through 'live' electrical components!
Please note: Switch OFF the ON/OFF switch before removing the casing.
Never touch electrical components or contacts when the ON/OFF switch is in the ON
position! This results in a risk of electrocution that may lead to injury or death.
"Safety instructions" are instructions with which you must comply exactly, to prevent
risks and injuries to individuals and material losses.
The following symbols are used in conjunction with these important instructions
concerning personal safety, as well as operational reliability.
2.3 Symbolsandwarnings
used
"Please note" indicates technical instructions that you must observe to prevent
material losses and equipment malfunctions.
Please note
2. Documentation information
2.1 Otherapplicable
documents
WRS-K installation and operating instructions.
The instructions for all accessory modules and further accessories may also apply.
2.2 Safekeepingof
thesedocuments
The system operator or user should ensure the safekeeping of all instruction
manuals.
→ Pass on these operating instructions as well as all other applicable manuals.
Warningstructure You will recognise warnings in this manual by a pictogram with a line above and
below respectively. These warnings are structured according to the following
principle:
Signalword
Typeandsourceoftherisk.
Explanation of the risk.
→ Action to prevent the risk.
These operating instructions are valid for the LON interface for WRS-K.
2.4Applicabilityof
theseinstructions

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3. Standardsanddirectives
The components of the Wolf WRS-K control system comply with the following
regulations:
EC Directives
- 2006/95/EC Low Voltage Directive
- 2004/108/EC EMC Directive
EN Standards
- EN 55014-1 Emission
- EN 55014-2 Immunity
- EN 55022 Radio disturbance characteristics
- EN 55024 Immunity characteristics
- EN 60730-1 Automatic electrical controls for household and similar use
- EN 60730-2-9 Particular requirements for temperature sensing controls
- EN 61000-6-1 Immunity for residential, commercial and light-industrial
environments
- EN 61000-6-2 EMC Immunity for industrial environments
- EN 61000-6-3 EMC Emission standard for residential, commercial and light-
industrial environments
- EN 61000-6-4 Emission standard for industrial environments
- EN 61010-1 Safety requirements for electrical equipment for measurement,
control and laboratory use
Only operate the system in perfect technical condition. Immediately remove / remedy
any faults and damage that may impact on safety.
3.2 Warnings
3.1 Installation/
commissioning
- In accordance with EN 50110-1, installation and commissioning may only be
performed by qualied electricians
- Observe all regulations stipulated by your local power supply utility and all VDE or
local regulations
- DIN VDE 0100 Regulations regarding the installation of high voltage systems up to
1000 V
- DIN VDE 0105-100 Operation of electrical installations
3.3 Service/repair - Regularly check the perfect function of all electrical equipment.
- Only qualied personnel may remove faults or repair damage.
- Only replace faulty components or equipment with original Wolf spare parts.
We accept no liability for any damage or loss resulting from technical modications
to Wolf control units.
Please note
3.4 Disposal Observe the following information regarding the disposal of faulty system
components or the system at the end of its service life: Dispose of all components
in accordance with applicable regulations, i.e. separate material groups correctly.
The aim should be the maximum possible recycling of basic materials with the least
environmental impact. Never throw electrical or electronic scrap into the household
waste, but recycle it appropriately.
Generally, dispose of materials in the most environmentally responsible manner
according to environmental, recycling and disposal standards.

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The LON interface is usually supplied fully assembled with the control unit. If it is
retrotted, please observe the following points:
The LON interface is inserted into the (serial card / BMS card) slot on the KLM-M
control unit (part no. 2744747) or KLM-L control unit (part no. 2744746). To do this,
proceed as follows:
1. Isolate the KLM-M or KLM-L air handling and ventilation module from the power
supply.
2. Remove the cover of the (serial card / BMS card) slot using a screwdriver.
4.2 Installation
4. Installation
4.1 View
Connection block to the KLM-M or KLM-L control unit
Terminal block for the LON-Works network
Service pin
Green service LED
Red fault LED
ABGND
1
2
3
4
5
3. Remove the inner part of the cover with wire cutters.
4. Insert the LON interface into the free slot such that a plug-in connection is
made between the connection block of the LON interface and the pins of the air
handling and ventilation module (connection block clicks into place).
1
2
3
4
5

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5. Ret the slot cover.
6. Reconnect the power supply.
4. Installation
4.3. Interface
conguration
S-04
Other...
BMS-Protocol
>LON-Works
Transfer rate
>4800 (RS485/RS422)
BMS-Address: 001
VALUE SAVE Esc CANCEL
If the LON interface was supplied fully assembled with the control unit, it
is also already congured. No further settings are required.
If the interface is retrotted, it can be congured as follows:
1. Navigate to the main menu with the Esc key on the BMK programming module.
2. Select menu item Heatingcontractor with Enter.
3. Enter password "1234" and conrm with Enter.
4. Select menu item Other... with Enter.
5. Navigate to menu item BMS-Protocol with the up/down arrows.
6. Use Enter to highlight the BMS-Protocol and the up/down arrows to select protocol
type LON-Works.
The transfer rate is then automatically set to 4800 and the BMS address to 001.
7. Conrm these entries with Enter.
8. Use Esc to complete the entry and exit the menu item.
The precise procedure for operating the BMK programming module can
be found in the WRS-K installation and operating instructions.
Note
Note

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5.3 Files
5.2 Servicepin Via the service pin, the LON interface can be connected to a LON-Works network.
For this, briey short-circuit the two contacts of the service pin using a screwdriver
or similar tool while installing the node. All data required to identify the interface is
transmitted to the LON-Works network as a broadcast.
The precise connection procedure depends on the LON-Works management tool
used. Please consult the relevant instruction manual.
Connection to the LON-Works network is made via the pluggable terminal block:
A: Signal A
B: Signal B
GND: Signal earth
5.1 Connection
5. ConnectiontoaLON-Worksnetwork
6. LEDdisplays
6.2 Fault LED (red): If the red fault LED illuminates, there is a communication error between the LON
interface and the KLM air handling and ventilation module.
Ensure that the installation has been carried out according to the instructions. Check
whether the transfer rate is set to 4800.
6.1 ServiceLED(green): OFF during operation Correct operation
Flashing after the power is switched on Start phase
Flashing after bridging the service PIN Conrmation/recognition of service PIN
Flashing during operation Data loss from the card / reprogramming
required
The LON interface is supplied with the application les (.xif, .nxe) already installed.
In addition, the les in their latest version are available to download from the Wolf
homepage (www.wolf-heiztechnik.de).

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Via the LON interface module, it is possible to gain read and write access to the air handling control unit. Standard network
variable types (SNVT) are used.
The following variables are available for read access:
7.1 Readaccess
7. Networkvariables
Description Network variable
Designation
Network variable
Type
Supply air temperature nvoTempSup SNVT_temp_p
Outside temperature nvoTempOut SNVT_temp_p
Room temperature nvoTempRoom SNVT_temp_p
Extract air temperature nvoTempExh SNVT_temp_p
Extract air temperature downstream
of humidier for adiabatic cooling
nvoTempAC SNVT_temp_p
Air quality (VOC) nvoAirQuality SNVT_volt
Air quality (CO2) nvoCO2 SNVT_ppm
Indoor air humidity nvoHumiRoom SNVT_lev_percent
Relative humidity, extract air nvoHumiExh SNVT_lev_percent
Relative humidity, supply air nvoHumiSup SNVT_lev_percent
Supply air pressure nvoPressSup SNVT_press_p
Extract air pressure nvoPressExh SNVT_press_p
Supply air ow rate nvoFlowSup SNVT_count
Extract air ow rate nvoFlowExh SNVT_count
Set room transducer nvoRoomSet SNVT_temp_p
Current set value, supply air temperature nvoTempSupSet SNVT_temp_p
Current set temperature nvoTempSet SNVT_temp_p
Current set value, fresh air proportion nvoFrAirSet SNVT_lev_percent
Current set speed, supply air fan nvoSpSupSet SNVT_lev_percent
Current set speed, extract air fan nvoSpExhSet SNVT_lev_percent
Current set value, fan stage nvoStepSet SNVT_count
Current set pressure, supply air nvoPresSupSet SNVT_press_p
Current set pressure, extract air nvoPresExhSet SNVT_press_p
Current set ow rate, supply air 1) nvoFlowSupSet SNVT_count
Current set ow rate, extract air 1) nvoFlowExhSet SNVT_count
Operating mode nvoMode SNVT_count
External system enable nvoExtEnable SNVT_switch
Hygrostat nvoHygrostat SNVT_switch
Humidier enable nvoStatusHumi SNVT_switch
System status nvoStatusAHU SNVT_switch
Operating status 2) nvoOperation SNVT_switch
Special operating mode nvoSpecial SNVT_state
Central fault nvoAlarm SNVT_switch
Current alarm code nvoAlarmCode1 SNVT_state
nvoAlarmCode2 SNVT_state
nvoAlarmCode3 SNVT_state
nvoAlarmCode4 2) SNVT_state
1) Required value = 10 times the specied value
2) Available WRS-K software version 3.0.000 or higher

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Specialoperatingmode (nvoSpecial):
When the special operating mode is enabled, the associated bit is set.
Alarm code (nvoAlarmcode1/2/3)
An enabled alarm code is transferred via 3 SNVT_state variables (nvoAlarmCode1/2/3).
When the alarm is enabled, the associated bit is set. More detailed descriptions of fault messages and possible solutions can be
found in the WRS-K installation and operating instructions.
Variable Bit Explanation
nvoAlarmCode1 0 Fault, inverter, supply air fan
1 Motor temperature too high, supply air fan
2 Isolator switch, supply air fan
3Air ow monitor, supply air
4 Fault, inverter, extract air fan
5 Motor temperature too high, extract air fan
6 Isolator switch, extract air fan
7Air ow monitor, extract air
8Outdoor air lter contaminated
9Supply air lter contaminated
10 Extract air lter contaminated
11 Pump fault, DHW bank
12 Frost stat has responded
13 Frost protection temperature, supply air not reached
7. Networkvariables
0 Holiday program
1 Filter check
2 Preheat program
3 Night ventilation
4 Backup mode
5 Extension of utilisation time
6 Peak ventilation
7 Natural cooling
8 Hygrostat function
Bit Explanation
9Air quality control
10 External demand
11 Run-on
12 HR Ice guard
13 Speed reduction
14 Setback mode 1)
15 Winter start HR 1)
1) Available WRS-K software version 3.0.000 or higher
Description Value Explanation
Current set value, fan stage 0 Fans OFF
1 Fans ON (single stage and variable fans) Fans stage 1 ON (multi stage fans)
2 Fans stage 2 ON
3 Fans stage 3 ON
Operating mode 0 Manual mode
1 7-day program
2 BMS mode
System status 0 Standby
1 Ready for operation
Operating status 0 System not in use
1 System in use
Codes

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14 Temperature limiter, electric heater bank
15 High limit safety cut-out, electric heater bank
nvoAlarmCode2 0 Fault, pump, cold water bank
1 Central fault, external refrigeration unit
2 Fire alarm system responded
3 Supply air temperature sensor faulty or not connected
4 Supply air humidity sensor faulty or not connected
5 Room temperature sensor faulty or not connected
6 Indoor air humidity sensor faulty or not connected
7 Extract air temperature sensor faulty or not connected
8 Extract air humidity sensor faulty or not connected
9 Outside temperature sensor faulty or not connected
10 Extract air temperature sensor downstream of humidier for adiabatic cooling faulty
or not connected
11 Icing-up sensor HR faulty or not connected
12 Fire damper responded
13 Fault, EC motor, supply air fan
14 Fault, EC motor, extract air fan
15 Databus fault, extension modules
nvoAlarmCode3 0 Remote control not connected or databus fault
1 Set value transducer not or incorrectly connected
2 Service required
3 Icing-up temperature HR below set value 2)
4 Fault, heat recovery
5Service message, humidier
6Fault, humidier
7 External fault
8 Smoke detector responded
9 Fault, burner KGWO
10 Fault, humidier for adiabatic cooling
11 No adiabatic cooling
12 Scaling, freshwater contact humidier, adiabatic cooling
13 Humidier for adiabatic cooling at risk of icing up
14 Service message, humidier for adiabatic cooling
15 Pump fault, heat pump 1)
nvoAlarmCode4 1) 0 Pump fault, reheater bank 1)
1 Frost thermostat responded, reheater bank 1)
2 Refrigeration system controller, databus fault 3)
3 KVS control unit, databus fault 3)
4 KVS control unit switched off (standby) 3)
5 BMS outside temperature implausible 3)
7. Networkvariables
1) Available WRS-K software version 3.0.000 or higher
2) Available up to WRS-K software version 2.1.031
3) Included in WRS-K software version 5.3.000 or higher

3062941_201707 11
With write access, set values can be specied or adjusted in the control unit, subject
to operating mode, via a LON-Works network.
For safety reasons, all variables that are available for BMS write access are
monitored regarding their min./max. limits. If a value outside the valid value range is
sent, the value is rejected and the original value is retained.
7.2 Writeaccess
7.2.1 Variables The following variables are available for write access:
Description Network variable Network variable
Designation Type
Set temperature from BMS nviTempSet SNVT_temp_p
Set speed, supply air fan from BMS nviSpSupSet SNVT_lev_percent
Set speed, extract air fan from BMS nviSpExhSet SNVT_lev_percent
Set value, fresh air proportion from BMS nviFrAirSet SNVT_lev_percent
Set pressure, supply air from BMS nviPresSupSet SNVT_press_p
Set pressure, extract air from BMS nviPresExhSet SNVT_press_p
Set ow rate, supply air from BMS 1) nviFlowSupSet SNVT_count
Set ow rate, extract air from BMS 1) nviFlowExhSet SNVT_count
Set value, fan mode (stage or ON/OFF)
from BMS
nviFanStepSet SNVT_count
Offset set temperature nviOfsTemp SNVT_temp_diff_p
Offset set speed, supply air fan nviOfsSpSup SNVT_lev_percent
Offset set speed, extract air fan nviOfsSpExh SNVT_lev_percent
Offset set value, fresh air proportion nviOfsFrAir SNVT_lev_percent
Offset set pressure, supply air nviOfsPresSup SNVT_press_p
Offset set pressure, extract air nviOfsPresExh SNVT_press_p
Offset set ow rate, supply air 1) nviOfsFlowSup SNVT_count
Offset set ow rate, extract air 1) nviOfsFlowExh SNVT_count
Operating mode nviMode SNVT_count
Outside temperature specied by BMS nviTempOutBMS SNVT_temp_p
7. Networkvariables
1) Required value = 10 times the specied value

12 3062941_201707
-SelectingtheoperatingmodeviaLONinterface:
Via variable nviMode, the operating mode can be changed using the LON interface:
Value Explanation
0 Manual mode
1 7-day program
2 BMS mode
7.2.2 Operatingmode
Manual mode
The system runs with the set values specied for manual mode via the BMK
programming module. The set values can be adjusted via offsets using the LON
interface.
7-dayprogram
The system runs with the times and set values specied in the 7-day program. The
set values can be adjusted via offsets using the LON interface.
BMS mode
The system runs with the set values specied via the LON interface. The system is
switched on and off via the LON interface.
The operating mode can be changed via the BMK programming module or the LON
interface.
-SelectingtheoperatingmodeviatheBMKprogrammingmodule:
1. Navigate to the main menu with the Esc key on the BMK programming module.
2. Select menu item Standardsettings with Enter.
3. Navigate to the operating mode with the up/down arrows.
4. Highlight the operating mode with Enter.
5. Select the required operating mode with the up/down arrows and conrm with
Enter.
If a LON interface module is installed, the system can be operated in 3 different
operating modes:
- Manual mode
- 7-day program
- BMS mode
6. Use Esc to complete the entry and exit the menu item.
GE-18
Standard setting
7-day program
active
+ BMS offset
DISPLAYS SELECTION Esc BACK
7. Networkvariables

3062941_201707 13
Pleasenote:
Anyadjustmentofthesetvaluesisalwaysrelativetothesetvaluesselected
formanualmodeorthe7-dayprogram.
Forsystemswithactivesetvaluetransducers,thesettemperaturecannotbe
adjustedviatheinterface.
7.2.3 Manual mode /
7-dayprogram
In manual mode or with a 7-day program enabled, the set values can be adjusted
via the offset variables. The system runs as specied by manual mode or the 7-day
program.
The following variables are effective:
- nviOfsTemp (adjust set temperature)
- nviOfsSpSup (adjust set speed for supply air fan)
- nviOfsSpExh (adjust set speed for extract air fan)
- nviOfsFrAir (adjust fresh air proportion)
- nviOfsPresSup (adjust set pressure for supply air)
- nviOfsPresExh (adjust set pressure for extract air)
- nviOfsFlowSup (adjust set ow rate for supply air)
- nviOfsFlowExh (adjust set ow rate for extract air)
- nviMode (operating mode)
Example:
Set speed for supply air in manual mode = 50 %; set speed for extract air in manual
mode = 45 %; set speeds changed via BMK-F to 60 % (supply air) and 55 % (extract air).
If an offset for the supply air speed (nviOfsSpSup) of 30 % is then specied, but no
offset for the extract air fan is set, new set values of 80 % (50 %+30 %) for the supply
air fan and 45 % (= set value for manual mode) for the extract air fan are enabled.
Adjustmentofsetspeed/pressure/owrate:
The set values for speed or pressure can be adjusted via the remote control in
3 stages (see WRS-K installation and operating instructions). Here, the set value is
altered according to the values specied in the standard settings for supply air and
extract air.
If, after altering a set value via the remote control, a set value is adjusted via the
LON interface for supply air or extract air, a changeover is made to the set values for
manual mode or the 7-day program, plus offset, via the LON interface for supply air
and extract air.
Example:
Set value for manual mode = 21 °C; set value adjusted via BMK-F to 23 °C.
If an offset (nviOfsTemp) = -1 K is then specied, a new set value of 20 °C
(21 °C – 1 K) is enabled.
Adjustingthesettemperature:
If the set value is adjusted via the LON interface, after the set value has been altered
via the remote control, a changeover is made to the set value for manual mode or the
7-day program, plus offset, via the LON interface.
SystemswithBMK-Fremotecontrol:
7. Networkvariables
Adjustingthesetvalueforfreshairproportion:
If the set value is adjusted via the LON interface, after the set value has been altered
via the remote control, a changeover is made to the set value for manual mode or the
7-day program, plus offset, via the LON interface.
Example:
Set value for manual mode = 40 %; set value adjusted via BMK-F to 50 %.
If an offset (nviOfsTemp) = -10 % is specied, a new set value of 30 % (40 %-10 %)
is enabled.

14 3062941_201707
7.2.4 BMS mode In BMS mode, all set values are specied via the LON interface. The system is also
switched on and off via the LON interface.
The following variables are effective:
- nviTempSet (set temperature)
- nviSpSupSet (set speed for supply air fan)
- nviSpExhSet (set speed for extract air fan)
- nviFrAirSet (set value for fresh air proportion)
- nviPresSupSet (set pressure for supply air)
- nviPresExhSet (set pressure for extract air)
- nviFlowSupSet (set ow rate for supply air)
- nviFlowExhSet (set ow rate for extract air)
- nviFanStepSet (set value for fan mode)
- nviMode (operating mode)
Via variable FanStepSet, the fans are switched on and the system is thus enabled
with the set values specied by the LON interface:
Value Explanation
0 System OFF
1 System ON
For single stage and variable speed fans:
Value Explanation
0 System OFF
1 System ON with fan stage 1
2 System ON with fan stage 2
3 System ON with fan stage 3
For multi stage fans (2- or 3-stage):
OutsidetemperaturespecicationviaBMS:
If the option "Outside temperature BMS" is enabled via the contractor menu, the
outside temperature value can be specied via the BMS (Temperature_Outside_
BMS).
SystemswithBMK-Fremotecontrol:
Settemperature:
If the set value has been altered via the remote control, a new set value specication
is accepted via the LON interface when the value of variable nviTempSet is changed.
Setspeed/pressure/owrate:
If the set value has been altered via the remote control, a new set value specication
is accepted via the LON interface when the value of variable nviSpSupSet or
nviSpExhSet (or nviPresSupSet or nviPresExhSet) is changed. As soon as a new
set value for supply air or extract air is specied, the set values specied via the LON
interface for supply air and extract air are enabled.
If the set value for the supply air speed or supply air pressure is set to 0, the set
value for the extract air speed is also set to 0.
Setvalueforfreshairproportion:
If the set value has been altered via the remote control, a new set value specication
is accepted via the LON interface when the value of variable nviTempSet is changed.
7. Networkvariables

3062941_201707 15
8. Specication
Operating conditions -0-55 °C, 20-80 % r.H. not condensing
Storage conditions -20-70 °C, 20-80 % r.H. not condensing
Transceiver Echelon FTT-10A
Transfer rate 78.125 kb/s
Power supply Via KLM

WOLF GmbH
Postfach 1380 · D-84048 Mainburg · Tel. [phone] · Fax [phone]
Internet: www.wolf.eu
3062941_201707 Subjecttotechnicalmodications