Honeywell V4073A Motorised Mid Position Valve Instruction Manual

Honeywell V4073A Motorised Mid Position Valve

INSTALLATION INSTRUCTIONS

APPLICATION
The V4073A valve has been designed to control the flow of water in a small bore domestic central heating system where both radiator and hot water cylinder circulation are pumped. It is typically suited for systems up to
90,000 Btu/h (26 KW).

SPECIFICATIONS

• Voltage: 230V ~ 50 Hz
• Power Consumption: 6W
• Lead Supplied: 1 metre, 5 core
• Operating Temperature Range: +5 to +88° C (Special models available for chilled water applications)
• Maximum Ambient Temperature: +52° C
• Pipe Fitting Sizes: 22 mm & 28 mm compression fitting, 3/4” & 1” BSP
• Dimensions and KV values: See diagrams

SPARES AVAILABLE

• Powerhead Part No. 40003916-003/U
• Motor Part No. 40002737-003/U
• Ball & O-Ring Kit Part No. 272742A/U

INSTALLATION

V4073A incorporates a manual lever, the lever should normally be in ‘AUTO’ position, but can be moved to ‘MAN. OPEN’ position for system draindown and filling purposes only.

Before fitting the valve, read through the plumbing and wiring instructions. This product MUST be installed by a competent person. The installation MUST conform to I.E.T. Regulations and with The Electricity at Work Regulations. A Class ‘A’ switch (having contact separation of at least 3 mm in all poles) must be incorporated in the fixed wiring as a means of disconnecting the supply. The system must be appropriately fused.

PLUMBING

The valve MUST NOT be fitted on the return pipework under any circumstances. Flow from the boiler must be connected to port AB, the radiator circuit to port A and the hot water cylinder circuit port B. The valve may be plumbed in at any angle, but must not be mounted so that the valve head is below the horizontal level of the pipework. In the unlikely event of a leak, a safety hazard could result. Do not grip the valve head while making and tightening up plumbing connections. Attach a spanner (32 mm or 1 1/4” AF) onto the valve body at each port, whilst tightening up the nuts. Tighten compression nuts enough to make a watertight seal.TAKE CARE NOT TO OVERTIGHTEN.

WIRING

The wiring diagram below shows relevant connections to a Resideo junction box (Part No. 42002116-002). Ensure that each numbered, lettered or colored wire is connected to the correct terminal in the junction box. Make sure all connections are good and all terminal screws are firmly tightened.

Valve wiring configuration is:

• White = Heating on
• Grey = Hot water off
• Orange = Boiler and pump live
• Blue = Neutral
• Green/Yellow = Earth

NOTES:

• The wiring diagram shows connections to a programmer with separate control of heating and hot water.
• If the programmer or time clock has no ‘Hot water OFF’ terminal, then the time clock will need to be replaced.
• If replacing a 6-wire relay model valve with a nonrelay 5-wire valve, contact Resideo for advice.

“Y” Plan

Note:
It is recommended that either the 10-way junction box or Sundial wiring center should be used to ensure first-time, fault-free wiring.

CHECKOUT PROCEDURE

To ensure the valve is plumbed and wired correctly, carry out the following checks after filling the system and switching on the power:

1. Check the manual lever is in the ‘AUTO’ position.
   • Check programmer has power.
   • Check boiler is switched on and its thermostat set to maximum.
2. Confirm correct hot water functions as follows:
   • Turn the room thermostat to a minimum setting or switch off at the programmer.
   • Set cylinder thermostat to maximum and programmer to ‘HOT WATER ON’.
   • The boiler should fire and the pump should run. Feel the pipe approximately 12” from valve port B, it should get hot.
3. Confirm correct heating functions as follows:
   • Turn the cylinder thermostat to a minimum or switch off at the programmer.
   • Set room thermostat to maximum and programmer to ‘CENTRAL HEATING ON’.
   • The boiler should fire and the pump should run. Feel pipe approximately 12” from port A, it should get hot.
4. Confirm the valve is functioning at the mid position by switching ‘HEATING ON’ and ‘HOT WATER ON’ at the programmer. Set both thermostats to maximum, and feel pipes approximately 12” from both ports A and B. Both pipes should get hot.

For other relevant plans, please scan the QR code to access the Honeywell Home wiring guide app. Resideo Academy supports heating and plumbing professionals with training from our industry and product experts. Scan the QR code to access the Resideo Academy online or download our app.

WEEE Directive 2012/19/EU
The product (and contained batteries) should not be disposed of with other household waste. Check for the nearest authorized collection centers or authorized recyclers. The correct disposal of end-of-life equipment will help prevent potential negative consequences for the environment and human health.

• Manufacturer for European Region: Pittway Sarl, Z.A. La Piece 6, 1180 Rolle, Switzerland
• Country of origin: Hungary www.resideo.com EN0H-2804GE23 R0523 M.S. Rev. 04-23 | Printed in Hungary
• Manufacturer for North and South America Region: Resideo Technologies, Inc. 1985 Douglas Drive North, Golden Valley, MN 55422 1-800-468-1502
• www.resideo.com
• 2023 Resideo Technologies, Inc. All rights reserved. The Honeywell Home trademark is used under license from Honeywell International, Inc.

References

• Que Faire de mes Déchets ? Découvrez les solutions pour tous vos déchets et nos conseils pour en produire moins.
• Smart Home Solutions in EMEA | Resideo

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