Honeywell Home Motorised 3 Port Mid Position Valve - 28mm

The V4073A Valve has been designed to control the flow of water in domestic central heating system...

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Honeywell Home 3 Port Mid Position Motorised Valve, 28Mm V4073a1088 V4073a1088/U

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Product Information

Full details

This guide helps homeowners and heating engineers understand the Honeywell Home Motorised 3 Port Mid Position Valve (V4073A1088). Designed for controlling water flow in domestic central heating systems, it provides efficient temperature control for radiator and hot water circuits. Note that proper installation, as described below, is crucial for optimal performance.

All features

Model Part Number	V4073A1088
Brand	Resideo

Extended Product Information

FAQs

What is the purpose of this valve?

The Honeywell V4073A valve controls the flow of water in a central heating system, directing it to the radiators and/or hot water cylinder.

Can I replace the powerhead without draining the system?

Yes, the powerhead is designed to be replaceable without draining the system.

What type of connections does the valve use?

The valve uses 28mm compression connections.

What is the ambient temperature range?

The ambient temperature range is from 5 to 50°C.

What is the function of the manual lever?

The manual lever allows for filling and draining down the system.

Where should the valve be installed?

It should be positioned where it cannot block any vent or cold feed and the flow must go into Port AB.

How do I ensure proper ventilation?

If installed in a confined space, ensure sufficient ventilation is available.

Troubleshooting

Central heating not working.

Check the power supply to the valve and ensure the room and cylinder thermostats are functioning correctly.

Hot water not heating.

Verify the cylinder thermostat is calling for heat and check the valve's operation. Make sure the manual lever is not engaged.

Valve making noise.

Ensure the valve is correctly installed and there are no obstructions in the pipework.

Pros and Cons

Pros

Efficient control of water flow in central heating systems.
Easy installation with 28mm compression fittings.
Powerhead can be replaced without draining the system.
Manual lever for filling and draining simplifies maintenance.

Cons

Requires proper positioning to avoid blocking vents or cold feeds.
May require ventilation in confined spaces.
Installation requires access for powerhead removal.

Setup, Compatibility & Care

Installation: The valve must be positioned where it cannot block any vent or cold feed. Ensure the flow goes into Port AB.
Angle: It may be plumbed in at any angle, but the powerhead must not be below the horizontal level of the pipework.
Ventilation: If installed in a confined space, provide sufficient ventilation.
Wiring: The valve requires a 230V AC power supply. Use the 1m flying lead for wiring.
Compatibility: This valve is designed for domestic central heating systems and works with room thermostats and cylinder thermostats for temperature control.
Care: Regularly check for leaks. Inspect the valve annually for optimal performance.