correct boiler settings?
I have an oil burner with a tankless coil. No separate water heater. It has two dials on the side, see attached picture.
Is the grey knob on the left a tempering valve? I can't turn it. Is there a reason for that? I assume I loosen the screw to turn it.
If that is a tempering valve, what is the grey box on the right? It looks like its set at 165.
I have steam heat.
What are the optimal settings for summer and winter?
The gray box, is your control to maintain the water temp in your boiler so you have hot water.
Yes, that is a tempering valve. Some need to be pulled out to turn them. Best to set it where it gives a constant hot water with minimal temp swing.
It would probably save you a lot of money to install an electric water heater, and not use teh oil boiler at all for your hot water.
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