Hi All Again.
Just wondering......
My ancient heating system has now been replaced. All new rads & a
Vaillant EcoTec Pro 28 Combi boiler.
When it's making DHW, I can hear it running "flat out". No problem.
When it's providing water to the radiators, in the summer, they seemed to heat up quickly. Now, as the weather is cooler, the radiators seem to be taking longer to get up to temperature.
The question......Does the boiler modulate output depending on return temperature?
ie, When the heating first comes on, should the boiler run at maximum, then as the return water nears it's set temperature, should the boiler idle back? Would I be able to hear the difference? Or, does the heating work at a set level & the boiler only modulate "up" for DHW?
I've looked through all the brochures & operating manual & can't seem to find a simple yes / no answer.
Or is it just that the radiators are losing heat quickly & I'm being paranoid?
Cheers.
Ian.
Just wondering......
My ancient heating system has now been replaced. All new rads & a
Vaillant EcoTec Pro 28 Combi boiler.
When it's making DHW, I can hear it running "flat out". No problem.
When it's providing water to the radiators, in the summer, they seemed to heat up quickly. Now, as the weather is cooler, the radiators seem to be taking longer to get up to temperature.
The question......Does the boiler modulate output depending on return temperature?
ie, When the heating first comes on, should the boiler run at maximum, then as the return water nears it's set temperature, should the boiler idle back? Would I be able to hear the difference? Or, does the heating work at a set level & the boiler only modulate "up" for DHW?
I've looked through all the brochures & operating manual & can't seem to find a simple yes / no answer.
Or is it just that the radiators are losing heat quickly & I'm being paranoid?
Cheers.
Ian.