[SOLVED] Control underfloor heating for multiple floors (OH as thermostat)

Setup, Configuration and Use Scripts & Rules
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9

This is almost an application. But if you struictly follow the pattern, your sendCommands would only be at the end. Let’s see if we can do that…

  // 1. See if the rule needs to run
  // The rule needs to run any time any member of gHneed changes

  // 2. Calculate what needs to be done.
  // gf and ff always follow the corresponding need and bf needs to be ON if any need is ON
  val bf = if(BF_Heating_need.state == ON || GF_Heating_need.state == ON || FF_Heat_need.state == ON) ON else OFF
  val gf = GF_Heating_need.state // follows the need Item so just use that
  val ff = FF_Heating_need.state // follows the need Item so just use that

  // 3. Do it
  if(bf != BF_Heating_Pump.state) BF_Heating_Pump.sendCommand(bf)
  if(gf != GF_HEating_Pump.state) GF_Heating_Pump.sendCommand(gf)
  if(ff != FF_HEating_Pump.state) FF_Heating_Pump.sendCommand(ff)

We can further reduce it to

  val bf = if(BF_Heating_need.state == ON || GF_Heating_need.state == ON || FF_Heat_need.state == ON) ON else OFF

  if(bf != BF_Heating_Pump.state) BF_Heating_Pump.sendCommand(bf)
  if(GF_Heating_need.state != GF_Heating_Pump.state) GF_Heating_Pump.sendCommand(GF_Heating_need.state)
  if(FF_Heating_need.state != FF_Heating_Pump.state) FF_Heating_Pump.sendCommand(FF_Heating_need.state)

Or, if you don’t care if the Pump receives a command that is the same as it’s current state

    BF_Heating_Pump.sendCommand(BF_Heating_need.state == ON || GF_Heating_need.state == ON || FF_Heat_need.state == ON) ON else OFF)
    GF_Heating_Pump.sendCommand(GF_Heating_need.state)
    FF_Heating_Pump.sendCommand(FF_Heating_need.state)

Another way to do the comparison would be

    BF_Heating_Pump.sendCommand(if(gHneed.members.filter[ i | i.state == ON ].size > 0) ON else OFF)
    GF_Heating_Pump.sendCommand(GF_Heating_need.state)
    FF_Heating_Pump.sendCommand(FF_Heating_need.state)

Or if you define your Group as

Group:Switch:OR(ON,OFF) gHneed

The rule can become

    BF_Heating_Pump.sendCommand(gHneed.state)
    GF_Heating_Pump.sendCommand(GF_Heating_need.state)
    FF_Heating_Pump.sendCommand(FF_Heating_need.state)
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