Zone valve problems come with the convenience of zone heating. You will want to know the basics of how to replace a zone valve if you have a boiler/radiator heating system in your home. But before we get into the specifics of replacing a zone valve, we need to be familiar with the types of problems associated with zone valves.
The great thing about hydronic heating systems is the ability to control the temperature in individual zones in your house. This allows you to heat the areas of the home that you use the most and keep temperatures lower in rooms that you are not using. In order to achieve this, a thermostat is placed in each room (or zone) that you want to heat. The zone valve opens and closes according to the temperature in the room as determined by the thermostat and your settings.
Sometimes the zone valve will fail to operate properly. This can be caused by a malfunctioning part on the valve itself or by a faulty thermostat or a faulty connection between the two. You may need to troubleshoot the problem from a few different angles before you can determine the exact cause of the problem. Keep in mind that too much air in your heating system can also cause a loss of efficiency to the point that the zones will no longer heat properly.
The zone valve requires an electrical connection in order to operate properly so be sure to check for a blown fuse before getting too deep into the replacement process. Also, because of the electrical work associated with this type of repair, I recommend calling a trained service technician to replace the faulty zone valve unless you are absolutely clear about what you are doing. The last thing that you want is to do any more damage to your heating system than you already have.
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