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Re: First time doing heat load calc: Whoa, is my boiler 2x oversized?
I agree with @Steamhead that you calculation sounds too low. It may be accurate but I would do further calculations by some other methods to cross check
Re: First time doing heat load calc: Whoa, is my boiler 2x oversized?
Most residential boilers are two to three times oversized.
Re: First time doing heat load calc: Whoa, is my boiler 2x oversized?
If a house has significant solar gain the fuel use method will understate the heating load.
Re: Electrical - heating question
If something is cord and plug connected the plug can serve as the disconnecting means. Washers, driers, stoves etc
Re: Electrical - heating question
If hard wired, the boiler must have a disconnect at the boiler or if the panel breaker is the disconnect, the boiler must be line of sight from the panel, as I recall.
Re: Lochinvar Knight KB 80 banging noises
@ thewireman, sez—"I've cleaned it every year with brush wheel (plastic wire one). "
Look, I've cleaned many of these Knights and it takes more than the plastic wire brush wheel to do the job. You have to clean between the heat exchanger coils. Some use a feeler gauge or a tool to get between the coils. You can get the surface of the HX gleaming clean and still have a combustion build-up between the coils impeding the flow of combustion gasses out of the boiler. Do a good water flushing afterwards.
If you don't have good flow thru the HX, you can get flashing in the HX which can be noisy.
Re: Circulator pumps tripping motor starter and panel. both pumps
I could be wrong, but the panel does not look factory built to me looks like someone built it on site. Nothing wrong with it but if it lacking a schematic make one and post it in the panel
Re: Electrical - heating question
As far as the question of hardwired versus cord and plug you would have to look at the product listing. As others have mentioned some Mod Cons are cord connected
Re: No heat second floor
Depending on the age of the boiler, your pressure / temperature gauge may be square (older) or it may be round. The pressure will most likely have a marking at 30 PSI that may indicate DANGER. All that means is the relief valve will squirt water out if the pressure gets that high. So don't add more water than you need.
Now you will need to know the pressure on the gauge. If it is below 12 PSI, (sometimes it has feet on the gauge also, so you want about 30 feet or around 12 - 13 PSI). If the needle is below 12 PSI then you need to find the water feed valve to put more water pressure in the boiler. A picture of the boiler from about 10 feet back will help us find the valve for you.
Once you get the water pressure up to 12, then you can let more air out of the top floor radiators. As you let more air out, the pressure will drop at the gauge. I find if you have 2 people doing the job, one to let the air out and one to watch the gauge and add water as the gauge pressure drops, the job goes much faster.
If you still have questions please post a photo of your boiler (it’s not a furnace)
