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6 720 607 884 (2009/05) GB

WR8..P...
WR11..P...

With piezo ignition and double safety system
consisting of flue gas monitor and heat
exchanger temperature sensor.

Safety instructions:

If you smell gas:
- Do not operate any electrical switches.
- Do not telephone from inside the danger area.
- Turn off the gas cock.
- Open windows and ventilate room.
- From outside, call the gas company and your approved

installer.

Do not use or store easily combustible materials in the vicinity
of the appliance.

Gas Instantaneous Water Heater

Installation Manual and Operating Instructions

Installation and servicing of the appliance may only be
carried out by an approved technician.

The appliance should be regularly serviced in order to ensure
that it remains in perfect and safe working order.

If there is a risk of freezing, the appliance must be switched
off and drained. If the appliance has not been drained during
a cold spell, when it is switched on again check that it
produces hot water. If problems occur, contact your installer

Summary of Contents for WR11 series

Page 1: ...use or store easily combustible materials in the vicinity of the appliance Gas Instantaneous Water Heater Installation Manual and Operating Instructions Installation and servicing of the appliance may only be carried out by an approved technician The appliance should be regularly serviced in order to ensure that it remains in perfect and safe working order If there is a risk of freezing the applia...

Page 2: ...no tin lead lining Automatic water valve made of glass fibre reinforced polyamide 100 recyclable Automatic control of water flow maintains constant flow rate even with fluctuating supply pressure Proportional adjustment of gas and water flow rates in order to ensure an even temperature gradient Gas valve with adjustable output via a slide control 1 3 Explanation of Model Code Contents W Gas instan...

Page 3: ...put control 21 Igniter button 22 Main gas valve 23 Gas valve for pilot burner 24 Pilot burner injector 25 Gas valve 26a Testing point for supply pressure 26b Testing point for burner pressure 27 Thermocouple 28 Igniter electrode 29 Temperature limiter 30 Flue gas safety device 1 Front cover 2 Hole for fixing to wall 3 Observation window 4 Temperature control 5 Output control 6 Gas connection 7 Exh...

Page 4: ...in heat input Qmin kW 8 1 8 1 Supply pressure LPG butane propane G30 G31 mbar 28 30 37 28 30 37 Consumption LPG butane propane G30 G31 kg h 1 1 6 Number of injectors 12 12 Max water pressure pw bar 12 12 Temperature control at maximum setting Temperature increase C 50 50 Flow rate l min 3 5 5 5 Min operating pressure pwmin bar 0 1 0 1 Temperature control at minimum setting Temperature increase C 2...

Page 5: ...moved whenever there is a risk of freezing Do not install the appliance in rooms where the free volume is less than 8 m3 Air admission The room where the appliance is to be installed should be provided of fresh air inlet areas according with the below table Minimum requirements are listed above Local regulations should allways be observed 2 3 Fixing the appliance Remove the temperature control and...

Page 6: ...ess steel or fibre concrete Fit as shown in Fig 5 A flexible or rigid pipe should be used fit it inside the flue socket The external diameter of the pipe should be slightly smaller than the dimension specified in the appliances dimensions table Fig 5 Minimum distances cm 2 7 Commissioning Turn on the gas and water cocks and check all connections for leaks Check flue gas safety device good function...

Page 7: ...ing In first place it must dislocate the output control of the off position to the ignition position see fig 7 Press in the slide control knob and subsequently press the piezo button Release the slide control after about 15 seconds if the pilot flame does not stay alight repeat the operation Ignition may not be successful due to the presence of air inside the gas supply pipe especially if first co...

Page 8: ...chnician Problem Cause Solution Pilot flame stay alight Blocked pilot burner Clean Several atempts required to turn pilot flame on Yellow pilot flame Flame goes out while appliance is in operation Flue gas safety device has tripped Ventilate room Wait 10 minutes then restart appliance If problem recurs call an approved technician Temperature limiter has tripped Wait 10 minutes then restart applian...

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Page 12: ...urning control clockwise reduces water flow rate and increases water temperature Temperature adjustment Depress slide control knob and hold it in Ignition output decrease output increase Press the piezo igniter Repeat these steps if the flame does not stay alight Switching off Move slide control to the far left Release the slide control knob after approximately 10 seconds ...

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