HORNE H-2501 Installation, Operating, & Maintenance Instructions Download | Manualshive

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Horne Engineering Ltd

Issue 3 8/05 8

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Summary of Contents for H-2501

Page 1: ...supply pipes 1 4 The Horne 25 TMV can be fitted in any attitude with the mixed water outlet pointing upwards downwards horizontally or at any angle between these planes 2 FLUSHING OF PIPEWORK TO WATER SUPPLY BYLAWS SCOTLAND 2003 AND THE WATER SUPPLY WATER FITTINGS REGULATIONS 1999 2 1 The most common cause for complaint regarding the performance of a valve is traced to dirt or debris in the TMV or...

Page 2: ...n freely If draining into a wash basin or bath make sure that the plug is NOT in place and that water passing through the flushing pipe is free to drain 2 11 Open the hot water ISOLATING VALVE and allow any air in the pipework to escape until water begins to flow to drain Allow water to flow to drain until it is perfectly clean and free from any dirt or debris 2 12 Close the hot water ISOLATING VA...

Page 3: ... open the cold water isolating valve 3 5 3 If the water coming from the tap is at a temperature of more than 2C above the mixed water temperature setting then the Horne 25 TMV is not cutting off the hot water supply properly The most likely cause for this to happen is dirt inside the TMV It should be dismantled and thoroughly cleaned and the pipework flushed again See 2 5 2 16 3 6 The Horne 25 TMV...

Page 4: ...e HORNE 25 TMV to the outlet has fully cleared 4 5 Use the ADJUSTING KEY 1 turn the ADJUSTING SCREW 2 clockwise to reduce the mixed water temperature or anti clockwise to increase it Adjustments of not more that half a turn at a time should be made The temperature at the outlet should be measured and allowed to stabilise before any further adjustments are made 4 6 After making an adjustment close ...

Page 5: ...enance 6 2 O ring seals should be replaced at least every 3 years 6 3 The THERMOSTAT ELEMENT 6 should be replaced at least every 6 years All other parts should be replaced only if physical damage has occurred 6 4 MAINTENANCE PROCEDURES 6 4 1 Close hot and cold water inlet isolating valves and open pipework to allow pipework to drain 6 4 2 CLEANING STRAINERS Unscrew END CAPS 16 and withdraw STRAINE...

Page 6: ...and jam the internal parts 6 5 5 Remove the VALVE COVER 3 and internal parts as referred to in 6 3 1 to 6 3 4 6 5 6 If the valve body requires de scaling remove all O ring seals and use a proprietary fluid for this purpose Do not put the THERMOSTAT ELEMENT ASSEMBLY 6 in the descaling fluid 6 5 7 Inspect the condition of the HOT VALVE FACE and the COLD VALVE FACE If the valve faces show signs of de...

Page 7: ...he internal components have been located loosely in the valve body place the VALVE COVER 3 over the THERMOSTAT ELEMENT ASSEMBLY 6 and then push gently and turn until the thread on the VALVE COVER 3 engages with the VALVE BODY 10 The internal components are self aligning 6 7 Check Valves 6 7 1 Check Valves are located within the STRAINER COUPLING 11 They are not removable They are designed for a lo...

Page 8: ...Horne Engineering Ltd Issue 3 8 05 8 ...

Page 9: ...w Partly blocked strainers Clean strainers Unusually high pressure drop in supply pipework Check all valves are full open Check Pressurisation unit Check mains supply Extra Demand added to system Check pipe sizing Mixed water temp does not respond to adjusting screw Slide Valve 9 is seized Valve requires de scaling Hot and cold inlets reversed Remove HORNE 15 TMV from pipes and reverse connections...

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