If fitted in a confined space, sufficient ventilation must be available to keep the valve within its ambient temperature range and access must be provided to remove the powerhead if necessary.

uk/media/catalog/product/2/h/2honeywell-v4043h-motorised-zone-valve-2-port-22mm-12126-2_min_12126_P_2. The V4044C1288 diverter valve can be used where sprung loaded Automatic Bypass Valves are ineffective due to fully modulating heating. It controls flow of upstairs underfloor system with individual room stats connected wirelessly to control panel. The Honeywell 22mm Motorised Zone Valve is a normally closed two-port motorised zone valve, with end switch for electrical control of pump and/or boiler, Ø22mm compression connections. It includes a manual lever for system filling and draining, and its powerhead can be replaced without draining down.Our range of two and three port Honeywell zone valves is the premier valve used in the domestic central heating industry, as a flow control mechanism in domestic and light commercial heating systems. The Honywell Motorised 2-way Zone Valve controls the flow of water in a wide range of central heating systems and is used in conjunction with a room thermostat and cylinder thermostat to give control of water and radiators. With a potential free end switch for electrical control and quiet operation, it offers minimal power consumption.

Years Guaranteed 1 Width 112 mm Type Zone Valve Size 22 mm Number of Ports 2 Maximum Temperature 50C Maximum Pressure 8. uk/honeywell-home-v4043h-motorised-zone-valve-2-port-22mm-12126/ 42331 Honeywell Home V4043H Motorised Zone Valve - 2 Port 22mm https://www. Honeywell Home V4043H are two port motorized valves for flow control applications in domestic central heating systems. The V4043B normally open model is particularly applicable to control of solid fuel systems, since it will always fail-safe in the event of a power failure. All sizes of normally closed valve have a manual lever to facilitate filling and draining down and a 1 metre flying lead.The V4043B normally open model is particularly applicable to control of solid fuel systems, since it will always fail-safe in the event of a power failure. Installation - The Honeywell V4043 Zone Valve must be positioned where it cannot block any vent or cold feed when closed. Note: Continuous operation of the Honeywell V4043H1056 22mm Motorised Zone Valve motor at the fully open position is not recommended.