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Re: Thermostat stopped triggering heat, technician came rewired taco valves and fried aquastat. Help.
I don't recommend doing it, but you have to watch the temp carefully, do not leave the boiler because it bypasses the aquatstat, there is nothing to shut down the burner if it gets too hot.
the 2 terminals on the right of the aquastat, one is labeled Tv and the other T. The thermostat (or the end switch on the zone valves in your case) shorts those terminals together to make a call for heat. If you jumper those the circulator and the burner should come on if everything is good in the aquastat. Is that a reset button or a fuse holder on the top of the aquastat sort of behind the thermostat connections?
the 2 terminals on the right of the aquastat, one is labeled Tv and the other T. The thermostat (or the end switch on the zone valves in your case) shorts those terminals together to make a call for heat. If you jumper those the circulator and the burner should come on if everything is good in the aquastat. Is that a reset button or a fuse holder on the top of the aquastat sort of behind the thermostat connections?
mattmia2
0
Re: Thermostat stopped triggering heat, technician came rewired taco valves and fried aquastat. Help.
That boiler is around 50 years old. Might make more sense to get a few estimates on complete system replacement, instead of spending a lot of money on it.
Re: What is this pipe spewing steam?
Yes, common in electronics:
(Britain, Ireland) To do a clumsy or inelegant job, usually as a temporary repair;
(Britain, Ireland) To do a clumsy or inelegant job, usually as a temporary repair;
Re: Apollo ATW heat pumps
are parts available?
tech support?
techs that know them?
Stick with that known manufacturers.
tech support?
techs that know them?
Stick with that known manufacturers.
Daykin
mitisubishi
fujitsu
mitisubishi
fujitsu
pecmsg
0
Re: Hot water boiler re-pipe and pipe sizing question
for 66,000 but 1" is plenty. 1" will do 80K
Re: Maximum PSI at home with water booster pump receiving 50 PSI from utility water main?
What the pressure in the House?
standing and running?
How much higher do you need it?
standing and running?
How much higher do you need it?
pecmsg
0
Re: How accurate are the efficiency percentages claimed by the mod con boiler mfr's?
So? If a system radiation needs more than 127 degrees water temperature in the radiators, it would seem that there is no condensation of exhaust gases. This being the case, why recommend a mod con boiler?
exqheat
0
Re: Indoor Reset
Are we perhaps talking about the Beckett Heat Manager? It is not an outdoor controller, measures supply/return temps, then calculates a temp set point for the boiler to operate at. Greg
Re: Question!
taco sentry is full port and its a awesome zone valve. the actuator isn't huge like someone else suggested it would be. and it doesn't use much electricityadambuild said:Simply curious: Why are zone valves not full port, but instead they have various CV restrictions? What is the reason / logic? Thanks in advance
Re: Question!
"Why are zone valves not full port" because the designer isn't paying for the cumulative power lost.
I switched to Belimo, ~full port ball valve, 75psi close of pressure, cv 1.4 on a 1/2" valve. imo best choice locally.
turned the pump down, and have better end to end temp stability from higher flow.
If restriction is needed wouldn't it be better to to do it separately adjustable.
I switched to Belimo, ~full port ball valve, 75psi close of pressure, cv 1.4 on a 1/2" valve. imo best choice locally.
turned the pump down, and have better end to end temp stability from higher flow.
If restriction is needed wouldn't it be better to to do it separately adjustable.
farmwi
0