Honeywell v4073a manual lever

 · 4) The manual lever of the valve offers no resistance with the power off and it does not return to the auto position when released, as it should. I have played with one of these valves in a shop and the resistance to movement is much greater and . VA 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. VA incorporates a manual lever, the lever should normally be in the “AUTO” position, but can be moved to the “MAN. OPEN” position for system drain down and filling purposes only.

The VA 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. Motorised Zone Valve. INSTALLATION INSTRUCTIONS VA Motorised Mid-Position Valve Application The VA valve has been designed to control the flow of water in a small bore domestic central heating system where both radiator and hot water cylinder circulation are pumped. It is typically suited for systems up to 90, Btu/h (26 KW). They are fitted with a manual lever, running in a slot on one end of the valve. When the valve is closed, this lever is "loose" for about one third of the travel of the slot with the rest of the travel pushing against a heavy spring.

Manual lever for filling/draining down; Quiet operation, minimal power consumption; Provides electrical output to boiler and/or pump; 1 Year Warranty. Whats in. Spring return action; Three position operation; Powerhead replaceable without draining down; Manual lever for filling/draining down; Quiet operation. 1m Cable Supplied · °C Flow Temperature · Spring Return Action · Manual Lever for Filling/Draining · Valve Opens to Port B in 8 Seconds (under Spring Return).