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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.
ZonePlus Z222 zone valve
Installation and commissioning
instructions
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Operation
Installation
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. B222) to which a self
contained actuator (Ref. A222) is
attached
POSITIONING OF VALVE
On new installations fit the Z222 valve
ensuring that the actuator head is NOT
below the horizontal level of the pipe
work and that the flow is in the direction
of the arrow. Also check that neither the
open vent or the cold feed are isolated.
This will ensure system and product
safety at all times. Remember to make
allowances for working, maintenance and
replacement.
120.00
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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.
FIT ACTUATOR TO VALVE BODY
Position the actuator on the valve body
lining up the valve spindle with the ‘D’
shape slot. A yellow guide strip has
been inserted behind the override lever
to assist installation; please remove the
guide once the actuator installation is
complete and before the system is used.
The actuator guide holes should line up
with the spigots on the valve body.
Fix with the screws provided and tighten
lightly. Set the override lever to manual.
Fill, test and thoroughly flush the system.
Installation - continued
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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.
Orange Live terminal on boiler
Grey Any permanent live supply.
IF FITTING TO A CH ZONE:
Wire Colour System Connection
Blue Any Neutral supply.
Brown Call terminal of room stat if fitted, otherwise the
CH ON terminal of the programmer.
Orange Live terminal of pump and boiler
Grey Any permanent live supply.
No earth connection is required. Ensure all connections are good and the screws secure. A
torque of O.75Nm is recommended for fixing the wires in place.
NOTE: In the event that the Z222 is being used in an unconventional system, the above
connections may be incorrect. In this case, please seek advice.
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Wiring connections
INSTALLATION AND CONNECTION SHOULD ONLY BE CARRIED OUT BY A SUITABLY QUALIFIED PERSON AND IN ACCORDANCE WITH
THE CURRENT EDITION OF THE IEE WIRING RFGULATIONS. A CLASS ‘A’ SWlTCH (HAVING CONTACT SEPARATION OF AT LEAST 3MM
IN ALL POLES) MUST BE INCORPORATED IN THE FIXED WIRING AS A MEANS OF DISCONNECTING THE SUPPLY, NORMALLY AT THE
CONSUMER UNIT. THE SYSTEM MUST BE APPROPRIATELY FUSED.
WARNING: ISOLATE MAINS SUPPLY BEFORE COMMENCING INSTALLATION
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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.
The valve should open. The boiler should fire, the pump run and the pipe on the outlet
side should get hot.
If the valve is fitted on a CH circuit.
Set the room thermostat to maximum and/or turn the CH on at the programmer. The
valve should open. The boiler should fire, the pump run and the pipe on the outlet side
should get hot.
TO RESET:
Return both the thermostats and the programmer to their normal settings.
Please note the above assumes that both programmer and thermostats are being used. If
this is not the case, ignore the action described for the item not fitted.
SPARES
The actuator and body for the Z222 zone valve can be purchased separately as spares or
as replacement parts (see page 2).
Commissioning
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Email: sales@horstmann.co.uk Website: www.horstmann.co.uk
Horstmann, Bristol BS4 1UP
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.
Registered in England No. 457553
©MARCH 2012: Secure Controls (UK) Ltd: All rights reserved.
The company reserves the right to alter product specifications without notice.
Leaflet number P80956 Issue 6
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Specification
Motor supply voltage: 230V AC, 50Hz
Power consumption: 5w
Lead supplied: 1.4 metre 4 core cable. Industry standard wire colours
No earth connection required: Unit is double insulated
Operating flow temperature: +5°C to 88°C
Switch rating: 3Amps
Maximum ambient temperature: 50°C
Maximum static pressure: 8.6 bar
Maximum differential pressure: 0.5 bar
Pipe fitting size: 22mm compression
Actuator: Maximum time to power
Open - 20 seconds
Maximum time to spring
Close 10 seconds
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