How to use HomeSeer to control your centralized ventilation? I have a switch that allows me to control the ventilation from the Kitchen. When do I want to switch ventilation? In the Bathroom!
TODO: add pictures of the Xanura inside the ventilation system

Problem Switching ventilation can only be done from the Kitchen, but I want to control it from the bathroom if humidity>65%, so automatically.

Ventilation system
The ventilation system has 3 settings:

• 1 ON (cannot be turned off!)
• 2 Higher (never used this)
• 3 highest (use this for bathroom)

Steps
1. Built Xanura SAIX12 module in the main ventilation unit.
2. Remove switch from kitchen
3. Device in Homeseer with ON/OFF
4. Event in Homeseer that turns ON ventilation when bathroom humidity >65%
5. Device in Homeseer that allows me to disable ventilation for (example) 3 hours

• Remove power from Ventilation Unit
• Find out how the device is wired and create diagram
• Mount switch (Xanura SAIX12 in my case)
• Program SAIX12 module with X10 address (A5)
• Add a humidity sensor in Bathroom (like Oregon THGR122)

• Create new HomeSeer device ‘deviceVent’ A5 (Appliance module w/Status)
• Configure Humidity sensor in HomeSeer ‘deviceHum’ /20
• Test if you can use this device to turn on/off the ventilation system

Create new HomeSeer event. This will turn on ventilation if the humidity goes >65%. The ventilation will be turned off after 15 minutes.
NOTE: Not tested/implemented: Only switch off if humidity <60% for x minutes.

• Trigger: Device value change ‘deviceHum(/20) greater than 65’
• Apply conditions
  • deviceVent is OFF
    • Don’t run event if ventilation is running
  • deviceNoVentFor3hrs is OFF
    • (optional) Don’t run event if ventilation is disabled for 3 hours
  • Time is after 08:30
    • Don’t run event early in the morning
  • Time is before 23:00
    • Don’t run event in the evening
• Actions
  • Device command: deviceVent ON
  • Wait: 15 minutes
  • Device command: deviceVent OFF

5. Disable ventilation for x time (optional)
Setup a device that you can turn on which will prevent ventilation to switch on for 3 hours. (sometimes you just DON’T want ventilation at level 3)

• Create new HomeSeer device ‘deviceNoVentFor3hrs’ A6 (Appliance module w/Status)
• Create new HomeSeer event.
  • Cannot retrigger for (10800 seconds = 3 hrs)
    • This should only run ONCE per 3 hours, adjust if you change this to 2 hours (for example)
  • Trigger: Device status change: deviceNoVentFor3hrs A6 Changed to ON
  • Action
    • Wait: 180 minutes (3 hours)
    • Device Command: turn deviceNoVentFor3hrs (A6) OFF

Extra/other information is available on www.domoticaforum.eu: topic 1 and topic 2