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Re: Lochinvar / Knight Boiler 80-285 Issues
" let me ask you this…if i were to start replacing parts, assuming something has failed, where would you start? "
check for 120v at the higher red circ, or from its controller(back of boiler) and the green one at the ceiilng also, if they have power, then the circ is bad, or jammed,
you mentioned the water was dirty, dirty water might have seized the circ(s),
the red one, isolate the circ with the valves above and below as you did earlier, on the end of the circ motor, that screw head, take it out, expect minor water, see if you can turn that shaft inside there to free it up or prove loose, put screw head back in.
may be able to do same on upper green circ,
if you don't have 120v at the circs, you have a controller or thermostat problem, did you check batteries at the stats?
neilc
Re: Lochinvar / Knight Boiler 80-285 Issues
purge on the boiler screen is part of the ignition / burn / shutdown sequence, not what we're looking for,
purging air from the zone loops is playing with all your valves, a hose, and forcing water where air should not be,
you need to figure why the circ(s) aren't circing,
one must be working in that your domestic hot is working,
can you post one distant picture showing the whole deal down there, floor to ceiling, left to right,
neilc
Re: Lochinvar / Knight Boiler 80-285 Issues
up at the ceiling,
the big green thing is an expansion tank,
to the right of it I see a small red tee handle on an open drain, it's a 1/4 turn to full open, careful now,
just nudge it open and see if there is air there, a bucket is your friend,
and there is a picture of one end of your baseboard, are there any other fittings at the far end, an air valve or vent?
neilc
Re: Leaking Super Stor
Hi, I only have questions. Did they say where the tanks are leaking? Is it at welds, fittings, or? Are there water quality issues? Salt softened water? No doubt engineers at HTP know what's going on. 🤔
Yours, Larry
Re: Backdrafting Gas Water Heater + Boiler Noise Issue Advice?
The hrv or the fan in a can make the most sense. The other appliances that vent outside like the dryer and the exhaust fans won't work well if they are under negative pressure either. The main maintenance to perform on a cast iron boiler is to make sure it is burning properly and that the safeties work. There is little reason to replace an 11 year old boiler unless it is leaking.
mattmia2
Re: Backdrafting Gas Water Heater + Boiler Noise Issue Advice?
They're upselling you. And they might not even fix the problem.
As has been suggested: Fix the negative pressure issue, and inspect the flues. And then fix the boiler. At 11yrs old you could get another 30 out of it easily. That water heater might live another 5-10 years.
JakeCK
Re: Boiler Season Start
@ethicalpaul that is piping for a section of the main that is counterflow and condensation drip right at the start of the main.
EzzyT
Re: Getting my 1924 system going again
On the gauge — the red hand indicates maximum pressure reached. The black hand indicates the actual pressure in the boiler.
When you fill the boiler, you want the black hand to come alive (it may be) and let it come up to about 2 marks above the 10 mark (about 12 psi). That should be ample.
And on the thermostat —those aren't the most sophisticated, not do they hold that close a temperature — but they will last forever. Keep it.
