Ok so a few days ago, I had the Evohome installed, along with the Hot Water Kit, on my heating at home, which consists of:
S-type setup
Ideal Logic 18 Heat Only Boiler
Megaflow Storage Cylinder
14 Radiators across 12 Zones (more about this later)
The EvoHome setup:
Connected Thermostat Pack - ATP921R3100
Hot Water Kit - ATF500DHW
Wall Mount Kit - ATF600
So all of this has been wired up correctly, as per the installation instructions for an S-type system, but to retain the safety isolation on the Megaflow, the wiring was slightly modified:
The pump is also powered directly via the Boiler.
So, day one, installer finishes and it's installed... After about an hour we get this:
So try resetting the controller, the fault clears only to re-appear later. Bummer... SO call Honeywell for some advice, and after going through everything, we get to the conclusion that the initial setup was performed wrong, as the option to use a Boiler Relay/Heat Demand wasn't needed on the S-type setup, so... we do the following:
1) Perform full Factory Reset
2) Choose 'Guided Setup'
3) Select 'No' to require a Boiler Relay/Heat Demand Relay
4) Select 'Yes' to Hot Water Kit
i) Bind CS92
ii) Bind DHW BDR91
iii) Bind CH BDR91
5) Create Zones
6) Have some cake
Success! No more errors on the controller, both DHW and CH are working just fine (so demanding heating and hot water is triggering the relevant BDR91's, which in turn is opening the motorised valves. Happy!!
However...
It now looks as though when the DHW demand is triggered, the motorised valve on that loop does open, but there is now no demand signal going to the boiler. From what I can see, it's all connected correctly as per wiring (the feed from Orange is going to Boiler Live and Pump Live), but neither the pump or boiler trigger. So my guess is the microswitch in the relay is caput... But annoyingly, this actuator was replaced last year as the old one had seized (it was previously a Honeywell V4043H 272848), and was replaced with a Danfoss ZA5. So, not sure whether to just replace the head with another ZA5, or fit what was previously there? Hopefully this should then sort it out...
I also need to fit a TRV to the radiator in the Hall, as this has no valve fitted, as it was where the original stat was. At present, when any zone demands any heat, the hall rad also warms up, and it's just baking the house with heat, so pretty much (for now) makes the advantages of the system somewhat limited.
Also been playing with the API (as mentioned in the other forum topic) and getting all my temps from the zones into my Graphite server. So another bonus!
All in, early days yet, still a lot to do with the system & also the API as a whole, but so far so good!
S-type setup
Ideal Logic 18 Heat Only Boiler
Megaflow Storage Cylinder
14 Radiators across 12 Zones (more about this later)
The EvoHome setup:
Connected Thermostat Pack - ATP921R3100
Hot Water Kit - ATF500DHW
Wall Mount Kit - ATF600
So all of this has been wired up correctly, as per the installation instructions for an S-type system, but to retain the safety isolation on the Megaflow, the wiring was slightly modified:
The pump is also powered directly via the Boiler.
So, day one, installer finishes and it's installed... After about an hour we get this:
So try resetting the controller, the fault clears only to re-appear later. Bummer... SO call Honeywell for some advice, and after going through everything, we get to the conclusion that the initial setup was performed wrong, as the option to use a Boiler Relay/Heat Demand wasn't needed on the S-type setup, so... we do the following:
1) Perform full Factory Reset
2) Choose 'Guided Setup'
3) Select 'No' to require a Boiler Relay/Heat Demand Relay
4) Select 'Yes' to Hot Water Kit
i) Bind CS92
ii) Bind DHW BDR91
iii) Bind CH BDR91
5) Create Zones
6) Have some cake
Success! No more errors on the controller, both DHW and CH are working just fine (so demanding heating and hot water is triggering the relevant BDR91's, which in turn is opening the motorised valves. Happy!!
However...
It now looks as though when the DHW demand is triggered, the motorised valve on that loop does open, but there is now no demand signal going to the boiler. From what I can see, it's all connected correctly as per wiring (the feed from Orange is going to Boiler Live and Pump Live), but neither the pump or boiler trigger. So my guess is the microswitch in the relay is caput... But annoyingly, this actuator was replaced last year as the old one had seized (it was previously a Honeywell V4043H 272848), and was replaced with a Danfoss ZA5. So, not sure whether to just replace the head with another ZA5, or fit what was previously there? Hopefully this should then sort it out...
I also need to fit a TRV to the radiator in the Hall, as this has no valve fitted, as it was where the original stat was. At present, when any zone demands any heat, the hall rad also warms up, and it's just baking the house with heat, so pretty much (for now) makes the advantages of the system somewhat limited.
Also been playing with the API (as mentioned in the other forum topic) and getting all my temps from the zones into my Graphite server. So another bonus!
All in, early days yet, still a lot to do with the system & also the API as a whole, but so far so good!
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