Dewhot 12lt Manual

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12lt

Constant Temperature

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Page 1 12lt Constant Temperature...
Page 3 Guarantee Burn-back After installation, please register your product on the Dewhot website (www. In the event of a burn-back, where the gasgeysers.co.za/product-registration) flame burns back to the jet, immediately You will need your invoice and Certificate turn the gas supply off at the gas cylinder.
Page 4: Parts Diagram
Parts Diagram LCD screen Controller screen Pilot assembly Pilot Pilot tube valve Battery Jet Bar Test Point Burner Washer Burner Page 4 of 30 Dewhot | Gas geyser manual...
Page 5 Cover C Temp sensor C Temp sensor Outlet Temp sensor Chimney box Radiator Inlet Temperature sensor Water flow sensor Inlet water valve Dewhot | Gas geyser manual Page 5 of 30...
Page 6: Technical Parameters
Type B Gas type Max gas pressure 2,8kpa Rated input 24kw Water pressure 20-500 kPa Maximum Water Flow 12L/min Max Gas Consumption 1.44kg/h Unit Size 715x 400x 240mm GW 11.2kg NW 9.6kg Page 6 of 30 Dewhot | Gas geyser manual...
Page 7: Functions And Features
Use this gas geyser in conjuction with making the appliance more efficient. our solar to gas valve to boost your solar water temperature in the winter months or colder, cloudier summer days. Dewhot | Gas geyser manual Page 7 of 30...
Page 8 1.5 to 2 minutes 52°C 55°C +/- 30 seconds 57°C +/- 10 seconds 60°C less than 5 seconds 63°C less than 3 seconds 66°C +/- 1.5 to 2 seconds 69°C +/- 1 second Page 8 of 30 Dewhot | Gas geyser manual...
Page 9 5. The COC should be issued and signed 2. Do not ignite any appliance. after the installation has been inspected. 3. Do not touch any electrical switch. 4. Evacuate the house immediately with your family and pets. Dewhot | Gas geyser manual Page 9 of 30...
Page 10: Installation Instructions
In the 7. It should be securely mounted to the wall. case of dry walling use dry wall anchors. 8. Installed at least 1400mm off the ground. Page 10 of 30 Dewhot | Gas geyser manual...
Page 11: Ventilation Requirements
4. Once the appliance is operating, the minimum water pressure of 14 psi (0,5 factory connections also need to be Bar) and a minimum water flow rate of tested for leaks. 2.5 Litres/min. Dewhot | Gas geyser manual Page 11 of 30...
Page 12: Important Tips
To keep the water pressure balanced add a 400-600kpa pressure regulating valve on the cold water supply for Page 12 of 30 Dewhot | Gas geyser manual...
Page 13 5. Appliances in the vicinity should be shut off to avoid vapours igniting from the gas burner. Flammable vapours can be drawn by air currents from surrounding areas to the inlet of gas geyser. Dewhot | Gas geyser manual Page 13 of 30...
Page 14 SANS 10087:1. If you are unsure please 3. You can now open the gas cylinder call the Dewhot offices to clarify. and any gas shut off valves installed on the gas line. There may be an air lock 7.
Page 15: Operating Warnings
• The body of the gas geyser can get hot during operatuon, do not touch any part of the gas geyser, except for the control panel Dewhot | Gas geyser manual Page 15 of 30...
Page 16: Water Temperature Settings
ON/OFF pressing the UP or down arrows on the temperature button (also see page 17). By pressing the UP or DOWN you buttons will adjust the temperature point by 1°C increments. Page 16 of 30 Dewhot | Gas geyser manual...
Page 17 The gas geyser is fitted with a device that shower loosing greater amounts of heat. will shut off the gas supply to the burner Dewhot | Gas geyser manual Page 17 of 30...
Page 18: Maintenance And Cleaning
This is highly advised and can be cleaned once a year. performed at any location inland or coastal. Perform regular maintenance on the Do not perform this step if the geyser is on. Page 18 of 30 Dewhot | Gas geyser manual...
Page 19: General Cleaning
After a long shut-down period, the gas • Put the filter back and screw it in geyser needs to be serviced and checked. • Turn on the second the cold water supply. Dewhot | Gas geyser manual Page 19 of 30...
Page 20 Only 35-38 degrees reached on the LCD screen The regulator may be undersupplying gas, Check the gas inlet pressure is operating at 2,8 kPa while the applinace is running Page 20 of 30 Dewhot | Gas geyser manual...
Page 21 45 deg Unit fires and dies, fires and dies, fires and dies four times in Gas section wiring loom is faulty a row then fails totally Dewhot | Gas geyser manual Page 21 of 30...
Page 22: Error Code Guide
LCD. • Take note of the error code displayed • Wait for about 2 minutes before turning and call the Dewhot Technical Service it on again. number. CAUTION • Open the hot water tap.
Page 23 Normal operation, close and re-open the tap Flame signal detected Check the gas inlet pressure is operating at 2,8 kPa without any water Change the gas valve and perform a pressure test flow Dewhot | Gas geyser manual Page 23 of 30...
Page 24 The gas flow is unstable, and has switched off 5 Check the gas inlet pressure is operating at 2,8 kPa times continuously while the applinace is running Change the diaphragm valve or controller Page 24 of 30 Dewhot | Gas geyser manual...
Page 25 Change the loom to LCD of the controller is damaged Change the LCD screen Change the controller Controller Change the controller malfunction The batteries are flat Change the batteries FLASH Low battery Change batteries Dewhot | Gas geyser manual Page 25 of 30...
Page 26 Once an installation is Before you sign off the installation, make complete you are required to brief, in full, sure you also receive your COC the operational and safety functions of the unit. Page 26 of 30 Dewhot | Gas geyser manual...
Page 27 Dewhot | Gas geyser manual Page 27 of 30...
Page 28 Dewhot | Gas geyser manual Page 28 of 30...
Page 29 www.dewhot.com...
Page 30 12lt Constant Temperature...