Honeywell 22mm Mid Position Valve (3 wire) V4044C1288

Motorised Zone Valve

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