Some other updates.
I spoke with Vokera about disabling the DHW preheat that was happening every hour over night even though I am using as a system boiler. Moving Jumper tag 5 to 6 disabled this.
I’m experimenting with overriding the Evohome low load control algorithm on the basis that the HCC80s employ TPI anyway.
Short term 10C requests are now substituted with a minimum control setpoint. That’s 40C on my boiler.
Updated:
But just overriding the 10C request is not enough. The maximum relative modulation is set to 0 in some cases stopping the burner. I’m overriding this too.
Also Evohome disables central heating along with the 10C request, that needs to be overridden for the short term low load 10C setpoints.
I spoke with Vokera about disabling the DHW preheat that was happening every hour over night even though I am using as a system boiler. Moving Jumper tag 5 to 6 disabled this.
I’m experimenting with overriding the Evohome low load control algorithm on the basis that the HCC80s employ TPI anyway.
Short term 10C requests are now substituted with a minimum control setpoint. That’s 40C on my boiler.
Updated:
But just overriding the 10C request is not enough. The maximum relative modulation is set to 0 in some cases stopping the burner. I’m overriding this too.
Also Evohome disables central heating along with the 10C request, that needs to be overridden for the short term low load 10C setpoints.
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