Hi all,
I've previously been helped on here by kind people so I'm tackling my next challenge. We have a GSHP (installed by previous owners) that supplies a buffer tank. That all runs OK.
The heating pump and manifold actuators are 'controlled' by three OJ Electronics WLM3s (one master and two slave units).
And here's where I get stuck:
Wired to the OJ boxes are room thimble sensors/thermistors, manual thermostats [I presume disabled] and data cable/cables from a Crestron control system. I think what happens is OJ receives temperature values from the rooms, sends those to Crestron and Crestron returns an open/close signal for each actuator back to OJ to implement.
The Crestron app (I think provided by Ultamation) is six years old and truly, truly terrible. It has set points, set point overrides, no obvious logic and can't be changed without forking out hundreds for a Crestron engineer. Even Ultamation couldn't understand the installation.
The challenge:
Any ideas very gratefully received! It's been suggested to rip it all out and put in heatmiser, but I wonder whether there are other options too. Thank you!
I've previously been helped on here by kind people so I'm tackling my next challenge. We have a GSHP (installed by previous owners) that supplies a buffer tank. That all runs OK.
The heating pump and manifold actuators are 'controlled' by three OJ Electronics WLM3s (one master and two slave units).
And here's where I get stuck:
Wired to the OJ boxes are room thimble sensors/thermistors, manual thermostats [I presume disabled] and data cable/cables from a Crestron control system. I think what happens is OJ receives temperature values from the rooms, sends those to Crestron and Crestron returns an open/close signal for each actuator back to OJ to implement.
The Crestron app (I think provided by Ultamation) is six years old and truly, truly terrible. It has set points, set point overrides, no obvious logic and can't be changed without forking out hundreds for a Crestron engineer. Even Ultamation couldn't understand the installation.
The challenge:
- I'd like to be able to control the system via an app, a decent one
- I don't know whether the room thermistors are OK (the readings are erratic via Crestron, but I don't know whether that's Crestron or the sensors), but may have to switch to wireless sensors or something else. The existing thermistors are connected with just two wire, and are badly sited in some places.
- Let's take Crestron out of the equation
- Can I keep the OJ boxes and Rehau actuators?
Any ideas very gratefully received! It's been suggested to rip it all out and put in heatmiser, but I wonder whether there are other options too. Thank you!
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