Best Of
Re: Is my Burnham Independence kaput?
Are you in New England? Some areas have a high chloride content in their water that has accelerated problems with Independence boilers rusting out above the water line.
Re: Experiencing a high failure rate with air vents, why?
collecting water is a sign of wet steam.
agreed what is the operation pressure
pecmsg
Re: Navien NCB-H Combi or Lochinvar Noble Fire Tube Combi
your incoming water temperature is the key to dhw performance as @GroundUp mentioned. The water provider may have that exact number
I had 110 Nobel with 52 degree well water and it worked great for two of us
With 10-1 turndown , it will be fine for the heating load
The Knight has some additional features and I like the heat exchanger better
Perhaps a heat pump water heater could be a good option for dhw?
hot_rod
Re: Any ideas why this pump keep going bad?
my bet would be on scaling from hard water, or water hammer. Or both.
That pump is rated to 125 psi.
A lazy hand gauge would capture spikes. 80 psi is about the high side of the pressure. Do you need it that high? Lowering it to 50 or 60 would help all the plumbing components. 80 psi can spikes to over 300 psi with a hammer and spike.
Any application with fast closing solenoids needs water hammer arestors. Maybe one at the end of the supply to the machines. High flow rates and high pressure against a fast acting valve are a big concern.
If you have arrestors they could be damaged
You can get arrestors that go on the individual hose connection, or a large size to cover multiple machines
hot_rod
Re: Viessmann vs Energy Kinetics
Carrier separated from UTC in 2020. Maybe you and I own part of carrier?
hot_rod
Re: Viessmann vs Energy Kinetics
EzzyT
Re: Viessmann vs Energy Kinetics
Re: Piping for New Steam Boiler
If you have sufficient height above the boiler, and the rest of the system is piped properly, you probably don't need to drop the header either. It's needed when low basement ceilings would leave an insufficient distance between the water line and the header.
Re: Room seems to be stuck in a narrow range of 66 and short cycle.
It doesn't matter.
You're losing more heat 68-70 than you are 66-67 and that's that.
If you want to save energy and be uncomfortable then set the thermostat to 55.
ChrisJ
Re: Room seems to be stuck in a narrow range of 66 and short cycle.
One long run with a huge swing will be slightly more efficient that several short runs — if the final temperature in both cases is the same. However, the amount of fuel used is related to the heat loss of the structure, which is dependent on temperature. Thus if a long run results in a large overshoot of the target temperature, while the shorter runs will hold at the target, the shorter runs will use less fuel. It's mostly about average temperature, and run length is a minor factor.
