A central heating system that transfers heat from a boiler to each room through a fluid filled plumbing system.

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Banging behind wall when heat comes on

In the past day I started hearing a banging behind the wall of my house it seems when the heat comes on. We have water heated baseboards. We lived in this house nearly two years and never experienced ...
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1answer
197 views

What does the low limit do, and where should it be set on an oil fired hot water furnace?

What does the low limit do, and where should it be set? My furnace has a honeywell triple aquastat relay and has a difference dial. Water temp is about 190 deg F. Also, water psi gauge is only ...
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1answer
45 views

Heat radiators not all working

I am new to this place and looking for help. Just feel that I wanna try to fix my heat system by myself rather than waiting for (really sucking) pes&g guys. Repairmen came days ago and was ...
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0answers
36 views

How to stop central heating system from leaking

Our central heating system is leaking a bit of water. The system is a Ferolli Megadens 5, it heats water for both the central heating system and the shower/tap. There are several pipes below the ...
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0answers
27 views

Ghost flows in some zones

After installing a new Mod/com boiler and replacing my zone valves with circulator pumps for each of five zones, I am getting ghost flows in three of the five zones. Thank you for any help you can ...
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551 views

Water not circulating in one radiator on a hot water boiler

My boiler has 4 zones. Zone 1 is the bottom floor. There are two radiators in zone 1. I am replacing one of them, an old baseboard radiator, with a cast iron with similar BTU. We hooked up the new ...