Honeywell V4043H User Manual

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 (32mm 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 NOTTO OVERTIGHTEN.

Plumbing

V4043H Motorised Zone Valve

Application

The V4043H valve has been designed to control the flow of
water in iron and copper pipe systems. Although specifically
designed for small bore central heating systems, the valve
can be used in commercial and industrial applications.

Specifications

Voltage: 220-240V ~ 50Hz
Power consumption: 6W
Lead supplied: 1 metre, 5 core
Operating temperature range: +5 to +88°C
Maximum ambient temperature: +52°C
Pipe fitting sizes:

22mm & 28mm compression fitting,

3

/4" & 1" BSP

Dimensions and KV values: See diagrams

Spares available

Powerhead Part No. 40003916-001
Motor Part No. 40002737-003
Ball & ‘O’ Ring Kit Part No. 272742A CARD

Installation

V4043H 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.E. Regulations and with The Electricity at
Work Regulations.

A Class ‘A’ switch (having contact separation of at least
3mm in all poles) must be incorporated in the fixed wiring
as a means of disconnecting the supply. The system must
be appropriately fused.

INSTALLATION
INSTRUCTIONS

Flow
Characteristics

AUTO

MAN
OPEN

AUTO

MAN

OPEN

Arlington Business Park
Bracknell
Berkshire RG12 1EB
Telephone: [phone]

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 a Check manual lever is in ‘AUTO’ position.

b Check programmer has power.
c Check boiler is switched on and its thermostat set to

maximum.

2 Confirm correct hot water functions as follows:

a Turn room thermostat to minimum setting or switch off

at programmer.

b Set cylinder thermostat to maximum and programmer to

‘HOT WATER ON’.

c Pump should run (S Plan ONLY) and boiler should fire

(S and C Plan). Feel pipe approximately 12" from valve
port it should get hot.

3 Confirm correct heating functions as follows:

a Turn cylinder thermostat to minimum or switch off

at programmer.

b Set room thermostat to maximum and programmer to

‘CENTRAL HEATING ON’.

c Boiler should fire and pump should run. Feel pipe

approximately 12" from pump (C Plan), or valve (S
Plan) it should get hot.

Completion

Reset both thermostats to temperature required, normally
60°C for cylinder thermostat and 20°C for room thermostat.
Return programmer to ‘Auto’ or mode selected by
householder. Full installation wiring and operating
instructions for SUNDIAL products are included in every
product pack. For special wiring diagrams or applications,
contact Honeywell. ENSURE THAT VALVE HEADS HAVE
FREE AIR MOVEMENTAROUND THEM.

NOTE:

1. If using the V4043H1080 (1" BSP) or V4043H1106 (28mm), the white wire must be electrically isolated. (‘S’Plan only.)

The wiring diagram above shows relevant connections to a Honeywell junction box (Part No. 42002116-001).
Ensure that each numbered, lettered or coloured wire is connected to the correct terminal in the junction box.
Make sure all connections are good and all terminal screws are firmly tightened.

Notes:
a Wiring diagram shows connections to a programmer with separate control of heating and hot water.

b If single channel time clock is used, connect switched live from time clock to terminal 4 or 6 at junction box,

then link terminal 4 to terminal 6 with a link wire.

Wiring

Whilst Honeywell takes all practicable steps to design and manufacture its products to comply with the requirements of the Health and Safety at Work Act 1974, all products
must be properly used and Purchasers are reminded that their obligations under the Act are to ensure that the installation and operation of such products at a place of work
should be safe and without risk to them.

Honeywell reserve the right at any time and without notice to change any product or information contained in this publication.
The wiring diagrams and installation instructions in this publication are provided for guidance purposes when installing recognised standard systems only. Any application of

this product not shown here, or any deviation from these instructions, is neither recommended nor advised. Any such application or deviation should be referred to
Honeywell for technical assistance.

Form No. 95C-10819-1

Rev. 5/97 KT

Printed In Canada