I have a Vaillant Ecotech 835 boiler controlled by a Honeywell TR4.
The boiler was previously set to automatic partial load and I tried dropping the flow temperature. The boiler kept turning off before the flow temperature was reached. I've now changed the partial load to 18kW and flow temp to 60°C.
Things are working fairly well, but I think I'm probably missing out on the boiler's more advanced features - e.g. automatic load and flow temperature control. I suspect the boiler and the thermostat might be working at crossed purposes - hence the issues when set to automatic partial load and a lower flow temperature.
Is there a 'recommended' thermostat for this boiler?
It's it worth upgrading/changing the thermostat or will it just be money down the drain?
The boiler was previously set to automatic partial load and I tried dropping the flow temperature. The boiler kept turning off before the flow temperature was reached. I've now changed the partial load to 18kW and flow temp to 60°C.
Things are working fairly well, but I think I'm probably missing out on the boiler's more advanced features - e.g. automatic load and flow temperature control. I suspect the boiler and the thermostat might be working at crossed purposes - hence the issues when set to automatic partial load and a lower flow temperature.
Is there a 'recommended' thermostat for this boiler?
It's it worth upgrading/changing the thermostat or will it just be money down the drain?