heatting saving 20%

Rich Swatton

I have a house with 4 zones.
Main house #1
Family room #2
Office #3
Bathroom radiant #4

Heating boiler Munchkin 140M
Domestic Super Store 45 gallon
Boiler has outdoor re-set and domestic hot water priority
I wanted to minimize the boiler sequencing.
I took the largest demand zone main floor zone #1 and connected the thermostat and zone pump directly to the boiler.
The rest of the zones and pumps are connected to a Taco multi zone relay and disconnected the relay end switch.
The boiler only fires when the main zone calls. The other zones only call their pumps and not the boiler.

I lowered the domestic boiler temp set point to 155*f so the boiler will be in the condensing mode on a domestic call. Recovery is a little slower.

My savings this year compared to last year are over 20%.

Unknown

saving 20%

So, if I understand you correctly,, you turned the heat off in these zones & just circulated the system water?
Of course there will be savings,, I mean how can there not be?

Dave

Rich Swatton

The heat was still on, the other zones they just didnt call the boiler.
They only got heat when the main house was calling..