In the last year I had new heating equipment installed (AS Air handler blowing over a hot water coil). This replaced a single baseboard zone in the upper level. That level is fooled into two zones by master/slave thermostats and a damper @ the A/H. There remain two independent baseboard zones in the lower level. The boiler and its aquastat were not replaced. The boiler also provides HW to the Kitch&bathroom via an internal coil. There are three new flo valves (BG), three new pumps (Taco) for the three zones with a new ARGO panel
The boiler sends the HW to the attic where the AH/coil is.
I feel like there's a problem: The boiler's aquastat is set for HI:180 and LO:130. If the heat is turned off the boiler will not fire until the LO temp is hit via normal dissipation. This is good. If HW is called for by, say, the bathroom the boiler will not fire until the LO is hit via demand. Also good.
But, when the heating zones call for heat the boiler will fire as soon as the boiler temp dips below 180 or if the current temp (@ call time) is already below the 180. This just doesn't seem efficient or good for the boiler if it has to fire up so often. Just wait until the outside temp is 20. Is this normal? I can't remember if the boiler behaved this way prior to the new equipment. I don't think so. Do you need more info? I don't want to have the HVAC guys back unless I can be reasonably sure they won't point the finger at the boiler/aquastat (maintained by the oil company).
the boiler: WM Gold
Aquastat: Honeywell Tri-Aquastat L8124A,c or L8151A
WM Gold w/ QB480 pump
BG Flo valves S/A 3/4
Taco circs 007-F5
Boiler Honeywell Aquastat L8124AC/L8151A