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Dewhot 12lt Manual Download Page 1

12lt

Constant Temperature

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Summary of Contents for 12lt

Page 1: ...12lt Constant Temperature...

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Page 3: ...rn back In the event of a burn back where the flame burns back to the jet immediately turn the gas supply off at the gas cylinder After ensuring the flame is extinguished wait for I minute and then re...

Page 4: ...Page 4 of 30 Dewhot Gas geyser manual Burner Parts Diagram LCD screen Controller box LCD screen Pilot assembly Pilot jet Gas valve Battery Box Pilot tube Burner Washer Jet Bar Test Point...

Page 5: ...Page 5 of 30 Dewhot Gas geyser manual Outlet Temp sensor 850 C Temp sensor 1100 C Temp sensor Cover Chimney box Inlet water valve Water flow sensor Inlet Temperature sensor Radiator...

Page 6: ...meters Description Constant temperature Model no NDCT12DH Model Type B Gas type LPG Max gas pressure 2 8kpa Rated input 24kw Water pressure 20 500 kPa Maximum Water Flow 12L min Max Gas Consumption 1...

Page 7: ...SED TO BACK UP SOLAR GEYSERS Use this gas geyser in conjuction with our solar to gas valve to boost your solar water temperature in the winter months or colder cloudier summer days FLAME OUT SENSOR Th...

Page 8: ...nd energy savings need to be considered when setting the water temperature Water temperatures above 52 C can cause severe burns Refer to page 16 1 Households with small children disabled or elderly pe...

Page 9: ...witch 4 Evacuate the house immediately with your family and pets 5 Leave the doors open for ventilation and contact the gas supplier registered LP Gas Installer or Fire Department 6 Stay away from the...

Page 10: ...GAS GEYSER Install the appliance in a place that allows for easy access for future servicing and replacing batteries Use at least 8mm concrete plugs and screws to mount the gas geyser to the wall In...

Page 11: ...as geyser requires a minimum water pressure of 14 psi 0 5 Bar and a minimum water flow rate of 2 5 Litres min 1 For long pipe runs water pressure can drop and additional water pressure may be required...

Page 12: ...essure regulating valve on the cold water supply for municipal water feeds Install a shutoff valve near the inlet of the gas geyser for service and draining purposes Installation of demountables is re...

Page 13: ...appliance If such flammables must be used open doors and windows for ventilation 5 Appliances in the vicinity should be shut off to avoid vapours igniting from the gas burner Flammable vapours can be...

Page 14: ...cycles until the gas reaches the burners it will then ignite should this not work after three cylces use the gas bleeder valve to bleed the gas through 4 You can adjust the temperature of your new gas...

Page 15: ...your gas supply and turn off the gas geyser in the event of a hot water leakage the geyser will not turn on The body of the gas geyser can get hot during operatuon do not touch any part of the gas ge...

Page 16: ...aximum water temperatures are reached The water temperature is determined by turning on a hot water tap Water temperatures at the tap will vary depending on the weather and length of piping from the g...

Page 17: ...with your hand before use and remember that hotter water settings increase the risk of injury The gas geyser is fitted with a device that will shut off the gas supply to the burner if the appliance ex...

Page 18: ...ilters should be cleaned once a year 5 Perform regular maintenance on the geyser to prevent carbon monoxide dangers excessive hot water temperatures or other potentially hazardous conditions DO NOT 1...

Page 19: ...brush and rinse it with running water Put the filter back and screw it in Turn on the second the cold water supply CAUTION Cleaning of the main burner should always be performed by Registered LPG Ins...

Page 20: ...time Unit fires continuously without a flame coming on or showing an error Faulty controller Faint firing and PA BA or 6A comes up on the screen Flat batteries The geyser flame comes on and runs up t...

Page 21: ...section is faulty check the first and second stage solenoids with a voltmeter Unit suddenly goes cold during use Batteries may be flat Regulator is delivering too high a gas pressure unit shuts off h...

Page 22: ...t operation of the appliance again IF THE ERROR CODE IS STILL SHOWN Turn off the hot water tap and turn off the switch on the LCD Take note of the error code displayed and call the Dewhot Technical Se...

Page 23: ...valve or controller E1 No flame signal detected within 60s on the pilot flame No flame signal detected within 10s on the main burner Check the gas inlet pressure is operating at 2 8 kPa Check whether...

Page 24: ...ure suddenly dropped causing a temperature spike check the flow rate is above 3lt min with the bucket test Change the radiator water temp sensor for an 85 C sensor Change the outlet temp sensor Change...

Page 25: ...3lt min with the bucket test Change the gas valve or controller EA Open circuit of input water temperature sensor Check whether the wire of input water temp sensor is pulled off burnt or damaged Chan...

Page 26: ...operational and safety briefing Before you sign off the installation make sure you also receive your COC Installer This appliance may only be installed by a LPG Installer registered with the South Af...

Page 27: ...Page 27 of 30 Dewhot Gas geyser manual...

Page 28: ...Page 28 of 30 Dewhot Gas geyser manual www dewhot com...

Page 29: ...www dewhot com...

Page 30: ...12lt Constant Temperature...

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