Boiler house Level controls
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Safety information, installation and maintenance WARNING: Your attention is drawn to Safety Information Leaflet IM-GCM-10 and in the UK, to IEE Regulations (BS 7671), as well as to any National or Regional regulations. This product is designed and constructed to withstand the forces encountered during normal use. Use of the product for any purpose other than as a pilot operated diaphragm valve for water could cause damage to the product and may cause injury or fatality to personnel. Installation notes: - We recommend that a strainer is fitted upstream of the valve to IEE Regulations (BS 7671). - Fit the valve with the flow in the direction of the cast arrow. - The valve may be mounted in any position, but preferably with the solenoid uppermost. - PTFE tape may be used on the pipe connections. The rated voltage is printed on the name-plate. Note that the flat terminal is the earth connection. For ease of installation the solenoid unit can be moved through 360 ° by slackening the solenoid nut. Indentations at 90 ° intervals in the base of the solenoid allow it to be positively retained, though it may be positioned at any other angle if required. The cable socket may be connected horizontally or vertically by removing the central plastic screw and turning the connector through 90 ° . Ensure the cable socket gasket is slightly compressed on refitting. Maintenance note: As the valve does not contain any lifed items, no spares are required or available. If it becomes necessary to dismantle the valve, proceed as follows: 1. Disconnect the mains supply. Caution - Do not overtighten screws, nuts, or pipework as this could distort the valve body. Wiring note: 2. Remove the solenoid retaining nut and withdraw the solenoid coil. 3. Check the condition of the 'O' ring at the base of the solenoid coil. 4. Note the position of the valve bonnet in relation to the valve body. (Aligned arrows on both components indicate correct position). 5. Remove the four bonnet retaining screws. 6. Note the positioning of the spring and diaphragm. 7. Remove the spring and diaphragm, and clean and inspect all valve components. 8. Check the condition of the 'O' rings. 9. Reassemble the valve in the reverse order of dismantling.
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How to specify Pilot operated solenoid valves shall be Spirax Sarco type WV1 normally closed valve with brass body and screwed connections, complete with corrosion resistant internals and nitrile rubber soft seat for use with water up to 80 °C.
How to order Example: 1 off Spirax Sarco WV1 pilot operated water valve, having a 1" BSP connection supplied and ready for a 230V power supply.
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TI-P402-03 EMM Issue 9
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WV1 Water Valve - Pilot Operated
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