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Old 10-12-2018, 05:36 PM
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Default Boiler help.

My new house has a high efficiency boiler in it and this is my first experience with this type of heat. I understand that the pipes get filled with water from the houses water supply but do I need to shut the valve off for the water supply once they are full? I have a call into the people that installed the furnace but it's late on a Friday and doubt they will call me back anytime soon.
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Old 10-12-2018, 05:56 PM
hyperlightboards48 hyperlightboards48 is offline
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My old house had a boiler. The only time the valve was opened was to add water after bleeding and or a leak. With my house the valve always remained closed and had a tank that regulated it’s own pressure. I’d imagine yours is the same. There is no way to know what your pressure is coming from the city or well so I would think it’s all self contained.

Don’t add too much water to the system. Look at your gauges someone might have made a line on there or a note what the pressure should be at.

Again I’m not at all a professional in this. Just speaking from my experiences.
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Old 10-12-2018, 06:05 PM
twoton twoton is offline
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There should be an automatic water makeup valve on your boiler to maintain water pressure in the system. The system pressure is a function of the total vertical rise of the piping in your house. There may be a shut off prior to the auto valve but this is only for servicing the unit and should be left open. Don't want to let your boiler run dry.
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Old 10-12-2018, 06:08 PM
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Here's a pic of the gauge and the pipe feeding it. Looks like a pressure regulator to me, the valve was already open so I assume it just stays that way.
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Old 10-12-2018, 06:11 PM
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Looks like about 7 psi. You got a single story house?
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Old 10-12-2018, 06:15 PM
twoton twoton is offline
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This is the one on my oil fired boiler. It has a lever on the top to manually add water. Shutoff on both sides.
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Old 10-12-2018, 06:17 PM
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Quote:
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Looks like about 7 psi. You got a single story house?
It's 2 floors and a basement. I'm guessing you don't think it's enough pressure? I can hear water circulating upstairs.
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Old 10-12-2018, 06:26 PM
twoton twoton is offline
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Your boiler is cold in that picture. I would think the pressure would come up when the unit is at operating temperature. My old oil burner always stays up to temp with about 15 psi operating pressure. My house is 3 stories.
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Old 10-12-2018, 06:29 PM
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Quote:
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Your boiler is cold in that picture. I would think the pressure would come up when the unit is at operating temperature. My old oil burner always stays up to temp with about 15 psi operating pressure. My house is 3 stories.
That's probably because it was 66 in here and i set the thermostat to 68 so it didn't have to run long to get up to temp.
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Old 10-12-2018, 06:33 PM
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Your boiler should have a low water shut down. I've seen makeup valves get silted up and fail. The boiler shuts down and doesn't want to restart. Check and see what the pressure is when it's up to temp.
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