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ZonePlus Z222 zone valve
Installation and commissioning
instructions
The Z222 valve with auxiliary switch has been designed to control the
water circulation in fully pumped systems, which employ a single pump for
both hot water and central heating circuits by allowing the flow to either or
both circuits using separate valves.
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Summary of Contents for Horstmann ZonePlus Z222
- Page 1 ZonePlus Z222 zone valve Installation and commissioning instructions The Z222 valve with auxiliary switch has been designed to control the water circulation in fully pumped systems, which employ a single pump for both hot water and central heating circuits by allowing the flow to either or...
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Page 2: Operation
Operation Valve position - In the event that mains power is disconnected the valve automatically spring-returns to the closed position. Override lever: For manually operating systems to open valve for system draining or filling. During normal operation, the lever must be in the auto position The Z222 consists of a 2 port valve body (Ref. - Page 3 Installation - continued FITTING OF VALVE BODY TO PIPEWORK Fit the valve body using the 22mm compression fittings provided. Tighten the compression nuts sufficiently to make a watertight seal, only gripping the valve by its body. Take care not to over tighten.
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Page 4: Wiring Connections
Wiring connections The 4 core cable fitted to the actuator can now be connected to the system following the simple colour-coded guide below. IF FITTING TO A HW ZONE: Wire Colour System Connection Blue Any Neutral supply. Brown ‘Call’ terminal of cylinder stat if fitted, otherwise the HW on terminal of the programmer. - Page 5 Commissioning To check whether the valve is operating correctly, carry out the following checks after the system is filled and vented. Ensure that the override lever is in the Auto position and the insert guide is removed. If the valve is fitted on a HW circuit. Set the room thermostat to maximum and / or turn the CH on at the programmer.
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Page 6: Specification
Tel: 0117 978 8700 Fax: 0117 978 8701 Horstmann is a trading name of Secure Controls (UK) Ltd., a wholly owned subsidiary of Secure International Holdings PTE Ltd. Registered office: Secure House, Moorside Road, Winnall Trading Estate, Winchester, Hampshire SO23 7RX.