Honeywell V4073A User Manual

HEATING CONTROLS
4.21
V4073A
MOTORISED MID-POSITION DIVERTER VALVE
FEATURES
■
Spring return action
■
Three position operation
■
Powerhead replaceable without
draining down
■
Manual lever for filling/draining down
■
Quiet operation, minimal power
consumption
■
Provides electrical output to
boiler and/or pump
OPTIONS
■
22mm/28mm or
3
/
4
"/ 1" connections
■
Replacement motor
■
Replacement powerhead
■
Replacement ball and
‘O’ ring kit
APPLICATION
The V4073A Valve has been designed to control the flow of water
in domestic central heating systems, where both radiator and hot
water cylinder circuits are pumped. It is typically suited for small
to medium sized installations.
The V4073A Mid-position Diverter Valve should be used in
conjunction with a room thermostat and cylinder thermostat to
provide full temperature control of a conventional, fully pumped
central heating installation. When used in this way, the control
system is known as Sundial Y Plan and the components can be
connected together using the Sundial Plan Wiring Centre which
has dedicated terminations and there is no need for a wiring
diagram.
An alternative method of wiring is to use the Honeywell 10-way
Junction Box (42002116-001) together with the Honeywell
Sundial Plans Wiring Booklet.
© Honeywell Control Products and Systems, Issue 10
0014_Section 4_dft10_v4.qxd:Section 2_dft9 15/10/07 16:20 Page 43

Honeywell V4073A Specifications

General

Voltage	230 V AC
Frequency	50/60 Hz
Power Consumption	6 W
Maximum Differential Pressure	0.6 bar
Maximum Operating Temperature	88°C
Body Material	Brass
Seal Material	EPDM
Weight	0.6 kg
Type	Diverter Valve
Fluid Temperature	5°C to 88°C
Ambient Temperature	0°C to 52°C
Valve Size	22 mm
Port Size	22mm

Summary

Features and Options

Features

Key operational characteristics including spring return, three position, replaceable powerhead, manual lever, quiet operation, and electrical output.

Options

Available connection sizes and replacement parts such as motor, powerhead, and ball/O-ring kits.

Application and Installation

Application

Details the V4073A valve's use in domestic central heating systems for controlling water flow in radiator and hot water cylinder circuits.

Installation Guidelines

Instructions for positioning the valve to avoid blocking vents or cold feeds, and ensuring adequate ventilation and access.

Product Specifications

Ordering Specification

Lists various model numbers with different connection sizes and flow coefficients (KV).

Technical Specifications

Covers power supply, consumption, electrical connections, timings, temperature ranges, pressure limits, and standards.

Valve Operation

Explains the valve's functional states based on power supply to different colored wires.

Flow Characteristics

Presents graphs showing flow rate versus pressure drop for different flow coefficients.