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Table of Contents
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Summary of Contents for Dewhot OD20DH
- Page 1 20L Outdoor Fan Forced Gas Geyser...
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Page 2: If You Smell Gas
Do not modify the appliance 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 3 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 appliance. Dewhot | Gas geyser manual Page 3 of 24...
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Page 4: Technical Parameters
Technical parameters Description Outdoor Room Sealed Model no OD20DH Model Type D Gas type Max gas pressure 2,8kpa Hot water output 2.5-20L/min Water pressure 0.25 - 5 BAR Rated input 40kw Water Flow 2,5 - 20L/min Rated voltage 240V/60Hz Rated Electrical Power... -
Page 5: Parts Diagram
Transformer Heat exchager Water flow sensor Water inlet connector Burner Combustion valve Gas inlet connector Control Control unit support unit Bottom Panel Water outlet connector Power cord Lock ring Bottom support Dewhot | Gas geyser manual Page 5 of 24... -
Page 6: Functions And Features
OVER PRESSURISATION PROTECTION The appliance will automatically protect itself by releasing pressure if the water supply is over 10 Bar (this can be manually set). Page 6 of 24 Dewhot | Gas geyser manual... -
Page 7: Safety Instructions
1.5 to 2 minutes 52°C 55°C +/- 30 seconds 57°C +/- 10 seconds 60°C less than 5 seconds less than 3 seconds 63°C +/- 1.5 to 2 seconds 66°C 69°C +/- 1 second Dewhot | Gas geyser manual Page 7 of 24... - Page 8 Before opening the hot water tap to test your gas geyser, check for gas leaks. Use a soapy solution to check all gas fittings and connections. Bubbles indicate a leak. Page 8 of 24 Dewhot | Gas geyser manual...
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Page 9: Water Supply
At least 8mm concrete plugs and screws should be used to mount the gas geyser to the wall. In the case of dry walling use dry wall anchors. The gas geyser requires a 13 amp plug point Dewhot | Gas geyser manual Page 9 of 24... -
Page 10: Water Supply Connections
3. 5 meters above the shower head is servicing. a minimum requirement if this is not possible then gravity fed water is Install a non-return between the gas not recommended geyser and the water shutoff valve. Page 10 of 24 Dewhot | Gas geyser manual... -
Page 11: Hot Water Outlet
Bubbles indicate a gas leak that must be fixed. 4. Once the appliance is operating, the factory connections also need to be tested for leaks. Dewhot | Gas geyser manual Page 11 of 24... -
Page 12: Gas Supply
5. The COC issued and signed. Label all wires prior to disconnecting them when servicing controls. Wiring errors can cause malfunctions. Page 12 of 24 Dewhot | Gas geyser manual... - Page 13 3. Pay attention to the flame picture fully opened. from time to time. If there is abnormal combustion such as a bright yellow Dewhot | Gas geyser manual Page 13 of 24...
- Page 14 14. Flammable vapours can be drawn by without causing damage. air currents from surrounding areas to the inlet of gas geyser. Page 14 of 24 Dewhot | Gas geyser manual...
- Page 15 The control panel has been preset to 41°C. REMOTE CONTROL DISPLAY To turn the control panel ON or OFF, hold the POWER button for more than (Displays water temperature 3 seconds. and Error Codes) Dewhot | Gas geyser manual Page 15 of 24...
- Page 16 The gas geyser is fitted with a device that will shut off the gas supply to the burner if the appliance exceeds normal operating temperatures. • The appliance won’t operate with a water flow of less than 3 litres/minute. If this occurs, increase the water flow. Page 16 of 24 Dewhot | Gas geyser manual...
- Page 17 The air and cold water supply filters should After you have checked, maintained and/ be cleaned monthly. or cleaned the appliance, make sure that it is working properly by turning on the hot water tap. Dewhot | Gas geyser manual Page 17 of 24...
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Page 18: Cleaning The Water Filter
• DO NOT remove any labels, including the rating table when cleaning or servicing. • DO NOT splash water on the remote controls when cleaning. • • Page 18 of 24 Dewhot | Gas geyser manual... -
Page 19: Burner Inspection
The gas geyser and piping should be drained if they could be subjected to freezing temperatures over this period. After a long shut-down period, the gas geyser needs to be serviced and checked. Dewhot | Gas geyser manual Page 19 of 24... -
Page 20: Troubleshooting
This function is to remove Fan continues to rotate after hot any burnt or unburned Normal operation. There is no water faucet gases from the need to call for service. is closed. burning chamber. Page 20 of 24 Dewhot | Gas geyser manual... - Page 21 Clean the filter with a tooth The Water filter is clogged brush to avoid a slow flow rate. for comprehensive troubleshooting, please visit our website www.gasgeysers.co.za/support/troubleshooting Dewhot | Gas geyser manual Page 21 of 24...
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Page 22: Error Code Guide
Turn off the hot water tap and turn off the switch on the remote control . • Take note of the error code displayed and call the Technical Service number on the back cover. Page 22 of 24 Dewhot | Gas geyser manual... - Page 23 Flame affected by wind Contact your installer PC Board (ignition Contact your installer controller) failure Or fan failures Water inlet temperature Contact your installer failure Residual flame problem Contact your installer Dewhot | Gas geyser manual Page 23 of 24...
- Page 24 Dewhot | Gas geyser manual Page 24 of 24...
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