oliver power wrote:YES, YES, YES!!! ABSOLUTLY CORRECT!!!!!!! Boiler and circulators should be running flat out, non stop. But, that's ONLY ONCE THE STOKER CATCHES UP! The problem here is, the stoker never CAUTCHES UP before the triple aquastat shuts it down. Long before the stoker has a chance to ramp up, the boiler water drops below thriple aquastat low setting, and SHUTS DOWN THE STOKER. Three groups of 4, or 5 pins takes care of that lag time, due to small idle fire. With the HOTTER IDLE FIRE, the stoker is able to catch up before the triple aquastat's low setting shuts it down. Once it's caught up, she'll run flat out, as you say. This is how it's wired from the factory. He should start with the settings I gave him earlier on. At least he'll have a positive starting point. If nothing else, JUST ADD THE PINS. Then check back with us in an hour or so to give results. One step at a time. My Kaa-2 performs excellent in ALL weather conditions. I would think he'd start out with positive proven settings. NO WAY is that Kaa-2 too small to heat his house. If the problem is that the boiler is not capable of putting out the BTU's he needs, it's not a boiler problem at all. It's an insulation problem.
This is the part of the KA2 operation that is foreign to me.
On my boiler, when there is a heat call, the boiler is running at max output (determined by the initial adjustments made during setup). The Idle fire is set using a seperate rheostat control that is adjusted as needed for weather/temperature conditions.
So in my case, at some point when I'm running at design, the system will be running flat out, with the circulating water equaling the (in my case) low limit setting on the aquastat. If the heatloss of the dwelling exceeds the output at that point, I'll lose temperature in the dwelling, however the system should be running as stated.
I'm gathering from what your saying that the KA2 has more than one 'max setting' and that Farrel can increae that, thereby increasing the recovery time of the boiler?
I should add that, in my case, my stoker always catches up. It might take a while, but running at full burn eventually the system temp is circulating ~160f water.