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<!-- Attention authors: Do not edit directly. Please add your changes to the appropriate source repository -->
<h1 id="comfoair-binding">ComfoAir Binding</h1>
<p>This binding should be compatible with the Zehnder ComfoAir 350 ventilation system. ComfoAir 550 is untested but should supposedly use the same protocol. The same is true for the device WHR930 of StorkAir, G90-380 by Wernig and Santos 370 DC to Paul.</p>
<h2 id="binding-configuration">Binding Configuration</h2>
<p>You can configure this binding in the file <code class="highlighter-rouge">services/comfoair.cfg</code>.</p>
<table>
<thead>
<tr>
<th>Property</th>
<th>Default</th>
<th style="text-align: center">Required</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td>port</td>
<td> </td>
<td style="text-align: center">Yes</td>
<td>Serial port which is connected to the Zehnder ComfoAir system, for example <code class="highlighter-rouge">/dev/ttyS0</code> on Linux or <code class="highlighter-rouge">COM1</code> on Windows</td>
</tr>
<tr>
<td>refresh</td>
<td>60000</td>
<td style="text-align: center">No</td>
<td>refresh inverval in milliseconds</td>
</tr>
</tbody>
</table>
<h3 id="example">Example</h3>
<div class="highlighter-rouge"><div class="highlight"><pre class="highlight"><code>port=/dev/ttyS0
</code></pre></div></div>
<h2 id="item-configuration">Item Configuration</h2>
<p>The syntax of the binding configuration strings accepted is the following:</p>
<div class="highlighter-rouge"><div class="highlight"><pre class="highlight"><code>comfoair="<device-command>"
</code></pre></div></div>
<p>where <code class="highlighter-rouge"><device-command></code> is replaced with the ComfoAir command from the list below:</p>
<table>
<thead>
<tr>
<th><code class="highlighter-rouge"><device-command></code></th>
<th style="text-align: center">Read / Write</th>
<th>Notes</th>
</tr>
</thead>
<tbody>
<tr>
<td>activate</td>
<td style="text-align: center">Write</td>
<td>- 0 means CCEase Comfocontrol is active and the binding is in sleep state<br />- 1 means Binding is active and CCEase Comfocontrol is in sleep state</td>
</tr>
<tr>
<td>fan_level</td>
<td style="text-align: center">Write</td>
<td>- 1 is Level A<br />- 2 is Level 1<br />- 3 is Level 2<br />- 4 is Level 3</td>
</tr>
<tr>
<td>target_temperature</td>
<td style="text-align: center">Write</td>
<td>value between 15.0 and 25.0 in 0.5 steps</td>
</tr>
<tr>
<td>outdoor_incomming_temperatur</td>
<td style="text-align: center">Read</td>
<td> </td>
</tr>
<tr>
<td>outdoor_outgoing_temperatur</td>
<td style="text-align: center">Read</td>
<td> </td>
</tr>
<tr>
<td>indoor_incomming_temperatur</td>
<td style="text-align: center">Read</td>
<td> </td>
</tr>
<tr>
<td>indoor_outgoing_temperatur</td>
<td style="text-align: center">Read</td>
<td> </td>
</tr>
<tr>
<td>incomming_fan</td>
<td style="text-align: center">Read</td>
<td> </td>
</tr>
<tr>
<td>outgoing_fan</td>
<td style="text-align: center">Read</td>
<td> </td>
</tr>
<tr>
<td>filter_running</td>
<td style="text-align: center">Read</td>
<td> </td>
</tr>
<tr>
<td>filter_error_intern</td>
<td style="text-align: center">Read</td>
<td> </td>
</tr>
<tr>
<td>filter_error_extern</td>
<td style="text-align: center">Read</td>
<td> </td>
</tr>
<tr>
<td>error_message</td>
<td style="text-align: center">Read</td>
<td> </td>
</tr>
</tbody>
</table>
<h2 id="limitations">Limitations</h2>
<ul>
<li>Either the ComfoAir binding or the CCEase Comfocontrol can be active</li>
<li>You must implement auto mode by yourself with rules. But it is more powerful.</li>
</ul>
<h2 id="rights-to-access-the-serial-port">Rights to access the serial port</h2>
<ul>
<li>Take care that the user that runs openHAB has rights to access the serial port</li>
<li>On Ubuntu systems that usually means adding the user to the group “dialout”, i.e.</li>
</ul>
<div class="language-shell highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="nb">sudo </span>usermod <span class="nt">-a</span> <span class="nt">-G</span> dialout openhab
</code></pre></div></div>
<p>if <code class="highlighter-rouge">openhab</code> is your user.</p>
<h2 id="examples">Examples</h2>
<h3 id="basic-examples">Basic Examples</h3>
<div class="highlighter-rouge"><div class="highlight"><pre class="highlight"><code>Number airflowControl "Activated" {comfoair="activate"}
Number airflowFanLevel "Level [%d]" {comfoair="fan_level"}
Number airflowTargetTemperature "Target temperature [%.1f °C]" {comfoair="target_temperature"}
Number airflowOutdoorIncomingTemperature "Outdoor incoming [%.1f °C]" {comfoair="outdoor_incomming_temperatur"}
Number airflowOutdoorOutgoingTemperature "Outdoor outgoing [%.1f °C]" {comfoair="outdoor_outgoing_temperatur"}
Number airflowIndoorIncommingTemperature "Indoor incomming [%.1f °C]" {comfoair="indoor_incomming_temperatur"}
Number airflowIndoorOutgoingTemperature "Indoor outgoing [%.1f °C]" {comfoair="indoor_outgoing_temperatur"}
Number airflowIncommingFan "Incomming fan [%d %%]" {comfoair="incomming_fan"}
Number airflowOutgoingFan "Outgoing fan [%d %%]" {comfoair="outgoing_fan"}
Number airflowFilterRuntime "Filter runtime [%d h]" {comfoair="filter_running"}
Number airflowFilterErrorI "Filter (intern) [%s]" {comfoair="filter_error_intern"}
Number airflowFilterErrorE "Filter (extern) [%s]" {comfoair="filter_error_extern"}
String airflowError "Errorcode [%s]" {comfoair="error_message"}
</code></pre></div></div>
<h3 id="extended-examples">Extended Examples</h3>
<p>items/comfoair.items</p>
<div class="highlighter-rouge"><div class="highlight"><pre class="highlight"><code>Group Lueftung "Lüftungsanlage" <pie>
Number Lueftung_Auto_Mode "Modus" <selfAutoMode> (Lueftung)
String Lueftung_Aussentemperatur_Message "Aussen [%s]" <temperature> (Lueftung)
String Lueftung_Innentemperatur_Message "Innen [%s]" <temperature> (Lueftung)
String Lueftung_Ventilator_Message "Ventilator [%s]" <selfAiring> (Lueftung)
String Lueftung_Filterlaufzeit_Message "Filterlaufzeit [%s]" <selfRuntime> (Lueftung)
String Lueftung_Status_Message "Status [%s]" <selfError> (Lueftung)
Number Lueftung_Control "Steuerung" <settings> (Lueftung) {comfoair="activate"}
Number Lueftung_Fan_Level "Stufe [%d]" <selfAiring> (Lueftung) {comfoair="fan_level"}
Number Lueftung_Komfortemperatur "Zieltemperatur [%.1f °C]" <temperature> (Lueftung) {comfoair="target_temperatur"}
Number Lueftung_Bypass "Bypass [MAP(bypass_de.map):%s]" <selfBypass> (Lueftung) {comfoair="bypass_mode"}
Number Lueftung_Aussenlufttemperatur "Aussenzuluft [%.1f °C]" <temperature> (Lueftung) {comfoair="outdoor_incomming_temperatur"}
Number Lueftung_Fortlufttemperatur "Aussenabluft [%.1f °C]" <temperature> (Lueftung) {comfoair="outdoor_outgoing_temperatur"}
Number Lueftung_Zulufttemperatur "Raumzuluft [%.1f °C]" <temperature> (Lueftung) {comfoair="indoor_incomming_temperatur"}
Number Lueftung_Ablufttemperatur "Raumabluft [%.1f °C]" <temperature> (Lueftung) {comfoair="indoor_outgoing_temperatur"}
Number Lueftung_Zuluft "Ventilator Zuluft [%d %%]" <selfAiring> (Lueftung) {comfoair="incomming_fan"}
Number Lueftung_Abluft "Ventilator Abluft [%d %%]" <selfAiring> (Lueftung) {comfoair="outgoing_fan"}
Number Lueftung_Filterlaufzeit "Filterlaufzeit [%d h]" <selfClock> (Lueftung) {comfoair="filter_running"}
Number Lueftung_FilterfehlerI "Filter (intern) [MAP(filter_de.map):%s]" <selfFilterintern> (Lueftung) {comfoair="filter_error_intern"}
Number Lueftung_FilterfehlerE "Filter (extern) [MAP(filter_de.map):%s]" <selfFilterextern> (Lueftung) {comfoair="filter_error_extern"}
String Lueftung_Fehlermeldung "Fehlercode [%s]" <selfError> (Lueftung) {comfoair="error_message"}
</code></pre></div></div>
<p>transform/bypass_de.map</p>
<div class="highlighter-rouge"><div class="highlight"><pre class="highlight"><code>1=Offen
0=Geschlossen
undefined=undefiniert
-=undefiniert
</code></pre></div></div>
<p>transform/filter_de.map</p>
<div class="highlighter-rouge"><div class="highlight"><pre class="highlight"><code>1=Wechseln
0=Ok
undefined=undefiniert
-=undefiniert
</code></pre></div></div>
<p>persistence/db4o.persist</p>
<div class="highlighter-rouge"><div class="highlight"><pre class="highlight"><code> Lueftung_Auto_Mode : strategy = everyChange, restoreOnStartup
Lueftung_Aussentemperatur_Message : strategy = everyChange, restoreOnStartup
Lueftung_Innentemperatur_Message : strategy = everyChange, restoreOnStartup
Lueftung_Ventilator_Message : strategy = everyChange, restoreOnStartup
Lueftung_Filterlaufzeit_Message : strategy = everyChange, restoreOnStartup
Lueftung_Status_Message : strategy = everyChange, restoreOnStartup
Lueftung_Fan_Level : strategy = everyChange, restoreOnStartup
</code></pre></div></div>
<p>sitemaps/comfoair.sitemap (fragment)</p>
<div class="highlighter-rouge"><div class="highlight"><pre class="highlight"><code>Text label="Informationen" icon="house" {
Text item=Lueftung_Fan_Level label="Lüftung [MAP(level_de.map):%d]" icon="selfAiring" {
Frame {
Switch item=Lueftung_Auto_Mode label="Modus" mappings=[1="Auto", 0="Manuell"]
Switch item=Lueftung_Fan_Level label="Stufe" mappings=[1="A", 2="1", 3="2", 4="3"]
}
Frame {
Setpoint item=Lueftung_Komfortemperatur step=0.5 minValue=15 maxValue=25
Text item=Lueftung_Aussentemperatur_Message
Text item=Lueftung_Innentemperatur_Message
Text item=Lueftung_Ventilator_Message
Text item=Lueftung_Bypass
}
Frame {
Text item=Lueftung_Filterlaufzeit_Message
Text item=Lueftung_Status_Message
Switch item=Lueftung_Control mappings=[1="App", 0="CCEase"]
}
}
Text item=Gas_Aktueller_Tagesverbrauch label="Gas [%.2f m³]" {
Frame {
Text item=Gas_Aktueller_Tagesverbrauch
Text item=Gas_Aktueller_Verbrauch
Text item=Gas_Min_Verbrauch
Text item=Gas_Max_Verbrauch
}
Frame {
Chart item=Gas_Aktueller_Verbrauch period=D refresh=10000
Chart item=Gas_Letzter_Tagesverbrauch period=M refresh=86400
Chart item=Gas_Letzter_Tagesverbrauch period=Y refresh=86400
}
}
Text item=Strom_Aktueller_Tagesverbrauch label="Strom [%.2f KWh]"{
Frame {
Text item=Strom_Aktueller_Tagesverbrauch
Text item=Strom_Aktueller_Verbrauch
Text item=Strom_Min_Verbrauch
Text item=Strom_Max_Verbrauch
Text item=Strom_Zaehler
}
Frame {
Chart item=Strom_Aktueller_Verbrauch period=D refresh=10000
Chart item=Strom_Letzter_Tagesverbrauch period=M refresh=86400
Chart item=Strom_Letzter_Tagesverbrauch period=Y refresh=86400
}
}
Text item=Wetter_Aussentemperatur label="Temperatur [%.1f °C]"{
Frame {
Text item=Wetter_Innentemperatur
Text item=Wetter_Aussentemperatur
Text item=Wetter_Temp_Max
Text item=Wetter_Temp_Min
}
Frame {
Chart item=Wetter_Diagramm period=D refresh=10000
Chart item=Wetter_Aussentemperatur period=W refresh=10000
Chart item=Wetter_Aussentemperatur period=M refresh=86400
Chart item=Wetter_Aussentemperatur period=Y refresh=86400
}
}
Text item=Datum
}
</code></pre></div></div>
<p>rules/airflow.rules</p>
<pre><code class="language-Xtend">import java.lang.Math
var boolean autoChangeInProgress = false
rule "Filterlaufzeit"
when
System started
or
Item Lueftung_Filterlaufzeit changed
then
if( Lueftung_Filterlaufzeit.state instanceof DecimalType ){
var Number laufzeit = Lueftung_Filterlaufzeit.state as DecimalType
var Number weeks = Math::floor( (laufzeit/168).doubleValue )
var Number days = Math::floor( ((laufzeit-(weeks*168))/24).doubleValue)
var String msg = ""
if( weeks > 0 ){
if( weeks == 1 ) msg = weeks.intValue + " Woche"
else msg = weeks.intValue + " Wochen"
}
if( days > 0 ){
if( msg.length > 0 ) msg = msg + ", "
if( days == 1 ) msg = msg + days.intValue + " Tag"
else msg = msg + days.intValue + " Tage"
}
postUpdate(Lueftung_Filterlaufzeit_Message,msg)
}
end
rule "Status Meldung"
when
System started
or
Item Lueftung_Fehlermeldung changed
or
Item Lueftung_FilterfehlerI changed
or
Item Lueftung_FilterfehlerE changed
then
var String msg = ""
if( (Lueftung_FilterfehlerI.state instanceof DecimalType) && (Lueftung_FilterfehlerE.state instanceof DecimalType) && (Lueftung_Fehlermeldung.state instanceof StringType) ){
if( (Lueftung_FilterfehlerI.state as DecimalType) == 1 || (Lueftung_FilterfehlerE.state as DecimalType) == 1 ){
if( msg.length > 0 ) msg = msg + ", "
msg = msg + "Filter: "
if( (Lueftung_FilterfehlerI.state as DecimalType) == 1 ) msg = msg + "I"
if( (Lueftung_FilterfehlerI.state as DecimalType) == 1 && (Lueftung_FilterfehlerE.state as DecimalType) == 1) msg = msg + " & "
if( (Lueftung_FilterfehlerE.state as DecimalType) == 1 ) msg = msg + "E"
}
if( (Lueftung_Fehlermeldung.state as StringType) != "Ok" ){
if( msg.length > 0 ) msg = msg + ", "
msg = msg + "Error: " + (Lueftung_Fehlermeldung.state as StringType)
}
}
if( msg.length == 0 ){
msg = "Alles in Ordnung"
}
postUpdate(Lueftung_Status_Message,msg)
end
rule "Aussentemperatur Meldung"
when
System started
or
Item Lueftung_Aussenlufttemperatur changed
or
Item Lueftung_Fortlufttemperatur changed
then
if( (Lueftung_Aussenlufttemperatur.state instanceof DecimalType) && (Lueftung_Fortlufttemperatur.state instanceof DecimalType) ){
postUpdate(Lueftung_Aussentemperatur_Message,"→ " + Lueftung_Aussenlufttemperatur.state.format("%.1f") +"°C, ← " + Lueftung_Fortlufttemperatur.state.format("%.1f") + "°C")
}
end
rule "Innentemperatur Meldung"
when
System started
or
Item Lueftung_Zulufttemperatur changed
or
Item Lueftung_Ablufttemperatur changed
then
if( (Lueftung_Zulufttemperatur.state instanceof DecimalType) && (Lueftung_Ablufttemperatur.state instanceof DecimalType) ){
postUpdate(Lueftung_Innentemperatur_Message,"→ " + Lueftung_Zulufttemperatur.state.format("%.1f") +"°C, ← " + Lueftung_Ablufttemperatur.state.format("%.1f") + "°C")
}
end
rule "Ventilator Meldung"
when
System started
or
Item Lueftung_Zuluft changed
or
Item Lueftung_Abluft changed
then
if( (Lueftung_Zuluft.state instanceof DecimalType) && (Lueftung_Abluft.state instanceof DecimalType) ){
postUpdate(Lueftung_Ventilator_Message,"→ " + (Lueftung_Zuluft.state as DecimalType) +"%, ← " + (Lueftung_Abluft.state as DecimalType) + "%")
}
end
rule "Filter Fehler"
when
Item Lueftung_Fehlermeldung changed
then
if( (Lueftung_Fehlermeldung.state as StringType) != "Ok" ){
send("test@gmail.com", "Lüftung hat einen Fehler gemeldet")
}
end
rule "Filter wechseln"
when
Item Lueftung_FilterfehlerI changed
or
Item Lueftung_FilterfehlerE changed
then
if( (Lueftung_FilterfehlerI.state as DecimalType) == 1 || (Lueftung_FilterfehlerE.state as DecimalType) == 1 ){
send("test@gmail.com", "Lüftungsfilter muss gewechselt werden")
}
end
rule "Manueller Eingriff"
when
Item Lueftung_Fan_Level changed
then
if( autoChangeInProgress ){
autoChangeInProgress = false
}
else{
postUpdate(Lueftung_Auto_Mode,0)
}
end
rule "Lüfterstufe"
when
Item Lueftung_Auto_Mode changed
or
Time cron "0 0/1 * * * ?"
then
if( (Lueftung_Auto_Mode.state as DecimalType) == 1 ){
var Number day = now.getDayOfWeek
var Number hour = now.getHourOfDay
var Number minute = now.getMinuteOfHour
var boolean isNight = false
// Freitag
if( day == 5 ){
if( hour < 7 || (hour >= 23 && minute >=30) ) isNight = true
}
// Samstag
else if( day == 6 ){
if( hour < 9 || (hour >= 23 && minute >=30) ) isNight = true
}
// Sonntag
else if( day == 7 ){
if( hour < 9 || (hour >= 22 && minute >=30) || hour >= 23 ) isNight = true
}
else{
if( hour < 7 || (hour >= 22 && minute >=30) || hour >= 23 ) isNight = true
}
var Number currentLevel = (Lueftung_Fan_Level.state as DecimalType)
var Number newLevel = 3
if( !isNight ){
var Number raumTemperatur = (Lueftung_Ablufttemperatur.state as DecimalType)
var Number aussenTemperatur = (Lueftung_Aussenlufttemperatur.state as DecimalType)
var Number zielTemperatur = (Lueftung_Komfortemperatur.state as DecimalType)
if(
raumTemperatur >= zielTemperatur
&&
aussenTemperatur >= raumTemperatur
){
newLevel = 1
}
else if(
raumTemperatur >= zielTemperatur - 1
&&
aussenTemperatur >= raumTemperatur - 1
&&
currentLevel == 1
){
newLevel = 1
}
}
else if( Fenster_OG_Schlafzimmer.state == CLOSED || Fenster_OG_Ankleide.state == OPEN ) {
newLevel = 2
}
if( newLevel != currentLevel ){
if( newLevel == 1 ){
logInfo("airflow.rules", "auto slowdown start")
send("test@gmail.com", "Lüftung verlangsamt")
}
else if( currentLevel == 1 ){
logInfo("airflow.rules", "auto slowdown end")
send("test@gmail.com", "Lüftung wieder normal")
}
autoChangeInProgress=true
sendCommand(Lueftung_Fan_Level,newLevel)
}
}
end
</code></pre>
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