Twin coil systems = running cost savings
Twin coil systems
Save money on power in summer using solar water heating through the standard coil, and in winter heat the water by the wetback fire using the thermosiphon coil.
Thermosiphon coil for wetback
The water is circulated through a coil inside the cylinder by a thermosiphon effect i.e. warmer water rises and cooler water falls, creating a natural flow. This means there is no need for a pump to circulate the water, you can still heat your water even if there’s a power cut!
Choose from either a 250 or a 300 L cylinder.
Designed for high temperatures
The duplex stainless steel inner cylinder means it can be used in solar systems with high incoming water temperatures.
Peace of mind
This range of hot water cylinders comes with a 10 year warranty and is backed by Rinnai after sales service and support.
* Refer to the owner and installer guide in the 'Technical' tab for full warranty details.
** For closed loop solar systems the heat transfer fluid is circulated through the solar collector on the roof where it is heated by the sun. The heated transfer fluid then passes through the cylinder coil, which acts like a very large element to heat the water.
• Indoor installations
• Mains and low pressure systems
• Connection to a wetback fire and closed loop solar systems
• Residential and light commercial water heating applications
Not suitable as a pool or spa heater, or for underfloor heating.
Rinnai water heaters are manufactured to suit most New Zealand council water supplies. However some water supplies can have a detrimental effect on the water heater, its operation and life expectancy. Stainless steel cylinders are not suitable for bore or tank water.
Twin coil lower element
For new builds and renovations connecting to a wetback fire and a closed loop solar system, where the homeowner will have full electric boost when there is not enough heat from supplementary sources.
Twin coil dual element
For new builds and renovations connecting to a wetback fire and a closed loop solar system, where the homeowner wants faster recovery times, and to reduce the risk of running out of hot water. Cylinder will have higher running costs.
Twin coil upper element
For new builds and renovations connecting to a wetback fire and a closed loop solar system, where the homeowner relies heavily on heat from supplementary sources. Upper element is only used to quickly heat water in the top of the cylinder.