Useful Tips

Should zone valve be open or closed?

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Should zone valve be open or closed?

The valve should open, and the end switch should close the circuit to the circulator or other valve at the end of the opening stroke.

What position should zone valve be in?

The zone valve needs to be positioned after the boiler and circulator of the central heating system. They can be located either on the hot side (before the hot water goes into the zone) or on the cold side (after the water goes throughout the building).

What is the purpose of a zone valve?

A zone valve is a specific type of valve used to control the flow of water or steam in a hydronic heating or cooling system. In the interest of improving efficiency and occupant comfort, such systems are commonly divided up into multiple zones.

Why do zone valves fail?

Zone valve problems come with the convenience of zone heating. 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.

How do I know if my zone valve is bad?

Most have a little lever that will move as the valve opens and closes. If the gears are stripped, or the motor or mechanism jammed, the lever won’t move. If the motor does indeed operate the valve, then problem is most likely a miniature “Microswitch” that is closed when the valve is fully open.

How do zone valves work?

The zone valve works with hot water or steam-based baseboard heating systems. When a signal is sent from the zone’s thermostat to the valve a wax piece inside the valve heats and expands. As it expands it puts pressure on a valve mechanism that — as it pushes down — allows water or steam through the valve and into the zone’s heating lines.

What is a three way zone valve?

3-Way Zone Valves. A 3-way zone valve is a bypass version of a 2-way zone valve with 3 ports, commonly used with fan coils, heating units or other central heating equipment.

What is a zone valve?

A zone valve is a specific type of valve used to control the flow of water or steam in a hydronic heating or cooling system. In the interest of improving efficiency and occupant comfort, such systems are commonly divided up into multiple zones.

What is a zone valve actuator?

A zone valve actuator is responsible for controlling the opening and closing of the valve. Zone valves are available in 2 or 3-way valve configurations and in various connection types. They can be normally closed or normally open, and provide differing flow rates dependent on valve size.