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Wet underfloor heating control problem
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<blockquote data-quote="ProDave" data-source="post: 498543" data-attributes="member: 6969"><p>Okay here are the basics (you seem to fundamentally not understanding how it works)</p><p></p><p>Time clock output to feed the power in the the UH4 for the UFH.</p><p></p><p>Room thermostats for each UFH zone directly connect to the UH4. there are 4 available zones on a UH4 you will be using two of them.</p><p></p><p>the UH4 has outputs to power the UFH manifold pump and individual outputs to power each of the actuator heads one for each pipe loop and each heating zone may switch more than one pipe loop.</p><p></p><p>The UH4 also has a switched 240V "call for heat" output. THIS powers the 2 port motorised valve for the UFH.</p><p></p><p>The switch contacts (orange and grey) on the 2 port motorised valves fire the boiler.</p><p></p><p>If you have a radiator circuit as well then That time switch output via any room thermostat for the radiator zone activates the radiator circuit motorised valve. The switch contacts from that connect in parallel to the switch contacts from the UFH motorised valve so either motorised valve opening calls for heat from the boiler.</p><p></p><p>It is best with UFH to have different time settings to the radiators. the Horstman 3 channel programmer is particularly good for this.</p></blockquote><p></p>
[QUOTE="ProDave, post: 498543, member: 6969"] Okay here are the basics (you seem to fundamentally not understanding how it works) Time clock output to feed the power in the the UH4 for the UFH. Room thermostats for each UFH zone directly connect to the UH4. there are 4 available zones on a UH4 you will be using two of them. the UH4 has outputs to power the UFH manifold pump and individual outputs to power each of the actuator heads one for each pipe loop and each heating zone may switch more than one pipe loop. The UH4 also has a switched 240V "call for heat" output. THIS powers the 2 port motorised valve for the UFH. The switch contacts (orange and grey) on the 2 port motorised valves fire the boiler. If you have a radiator circuit as well then That time switch output via any room thermostat for the radiator zone activates the radiator circuit motorised valve. The switch contacts from that connect in parallel to the switch contacts from the UFH motorised valve so either motorised valve opening calls for heat from the boiler. It is best with UFH to have different time settings to the radiators. the Horstman 3 channel programmer is particularly good for this. [/QUOTE]
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