What is a Rinnai demand duo system?
Rinnai Demand Duo is the combination of between 1 and 6 gas continuous
flow water heaters with a storage tank. The storage tank allows a short period
of high hot water flow rate, greater than the continuous flow rate of the HD
water heater(s).
How does it work?
Demand Duo is a complete packaged storage hot water system made up of
one or more HD water heaters with a manifold system, primary pump(s),
thermostat and a stainless steel storage tank.
The thermostat senses the temperature of the water in the tank, and when it
drops below the set point, the primary pump is activated. This flow in turn
starts the Rinnai continuous flow HD water heater which returns heated
water to the tank.
Applications
- Hotels & Motels
- Apartment Blocks
- Student Accommodation
- Shower Blocks
- Commercial Kitchens
- Commercial Laundries
Installations of this type typically have a predictable hot water volume,
usually based on number of people living in a particular building either
showering, washing or eating, or industrial machines that require regular
peaks of water.
Demand Duo are often used on projects on a flow and return system to
distribute the water around the building. It should be noted that flow and
return systems continually lose heat through the circulation pipework and
this adds running costs to the project. |
