20L Gas Geyser Outdoor Fan Forced
The cutting-edge Outdoor Fan Forced 20L Gas Geyser is one of the most efficient and safest gas water heaters on the market.
This efficient multiple-use application gas geyser can provide up to 20L of hot water per minute through multiple outlets.
D Type Install outdoors only
Hot water demand
Designed for medium-sized homes, the 20L Fan Forced Gas Geyser maintains a consistent temperature when running multiple outlets at the same time.
Energy saving
Fan-forced efficiency provides maximized energy savings by heating only what you need.
Triple safety
The fan removes fumes, auto shut-off prevents leaks, and pressure relief safeguards for worry-free hot water.
Outdoor longevity
The outdoor fan forced model is weatherproof but we recommend installing the unit with a weather box (cover) in coastal areas prone to heavy winds and rain.
- Heavy-duty copper radiator
- 88% energy efficiency
- Pressure relief protection (to function effectively,
the valve must be set to your water pressure) - Temperature controller included with a 10m cable
- Automatic self diagnosis codes
- Compatible with mixer taps
- Ensures constant temperature when multiple outlets are used simultaneously
- Weather resistant exterior
- Flame failure safety device
- Inverter compatible
Max Gas Pressure 2.8 kPa
Water Pressure 25-500 kPa
Max Gas Consumption 2.9 Kg / hour
Water Output (min/max) 2.5L - 20L / min
Rated Electric Power 45W
IP rate IPX4
Rated Voltage 240V / 60Hz
Rated Input 40Kw
Unit Weight 17.2 Kg
Packaged Weight 18.7 Kg
Unit Size 575 x 365 x 133 mm
Packaged Size 740 x 430 x 220 mm
Sku: OD20DH
Cylinder vaporisation rates
(maximum short term use)
48kg = 1,9kg/hr
19Kg = 0,92kg/hr
9kg = 0,46kg/hr
Minimum cylinder size = 48kg
Minimum regulator size = 4kg/hr
Minimum ID pipe size
16mm = less than 8 meters
20mm = between 8-25 meters
The Dewhot Bucket Test : Determine your flow rate
How to choose your type of Gas geyser
20L Outdoor Fan Forced Gas Geyser FAQs
20L Fan Forced Geyser are designed for medium-sized homes and are multiple-use geysers which means you can run your outlets simultaneously
- 3 x showers + basin
- 1 x Bath + 2 showers + basin
Remember: for optimal performance, ensure the total water flow from all outlets doesn’t exceed 20 litres per minute.
Do the bucket test to determine your flow rate demand and make an informed decision when choosing your geyser size.
The 20L rating indicates the geyser can collectively heat 20 litres of water per minute. You will never run out of hot water as long as you have gas.
The 20L capacity is ideal for medium-sized homes. It can service 3 showers and a sink, or 1 bath, 2 showers and a sink simultaneously.
The fan forced gas geyser is the most efficient and the cost of heating a litre of water is the same regardless of the size of the geyser. The maximum amount of water a 20L gas geyser can heat at any one time is 20 litres – and this large capacity enables you to service taps from multiple sources at the same time. For example: If all your taps have a flow rate of 10 litres per minute each, and you run one outlet for 1 minute, you will only pay for 10 litres of heating. But if you are running 2 outlets at the same time for 1 minute, you will pay for 20 litres of heating.
The logic tree is a tool that guides you through a series of questions to help find the gas water heater solution the would be most suitable for your individual home set up.