V4073A Motorised Midposition Diverter Valve

 

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 (42002116-002) together with the Honeywell Sundial Plans Wiring Booklet.

  

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/powerhead/ball and 'O' ring kit

 

V4073 Motorised Zone Valve Ordering Specification

 

V4073A1039

22mm compression. 6.0 KV. Maximum close-off differential pressure 0.69 bar

V4073A1054

As above, but 3/4" BSP Female

V4073A1088

28mm compression. 8.1 KV. Maximum close-off differential pressure 0.55 bar

V4073A1062

As above, but 1" BSP Female

Spare Parts

40002737-003

240VAC replacement motor

40003916-003

Replacement powerhead