Benefits

Demand Duo storage hot water systems hold 250 to 315 litres of hot water
per system. This is available where high peak flow rates for short periods of
time are common.

Recovery is matched by selecting the required number of Rinnai Heavy Duty
water heaters.

The heater(s) can also be mounted many metres (remotely) from the tank.
Note: Extended primary pipe runs must be oversized and/or a primary pump
upgrade. Please contact your Rinnai Commercial Representative for further
information.

Rinnai Demand Duo systems can also be used instead of Manifold Packs for
projects where limited gas supply is available.

How is the Rinnai demand duo system supplied?

The DD1 system is provided with an integrated HD water heater on the tank.
Larger capacity models – up to 6 units on a single system come complete with
pre-assembled manifold. They are of modular construction prefabricated
under factory conditions. The lightweight individual pieces are transported
and assembled in position on site. To complete the Demand Duo system, all
that is required on site is the final pipe work between the manifold, pump
and tank.

A standard DD1 has the heater mounted on the tank but can be ordered in
parts for applications with a remote mounted burner.

What is included in the rinnai demand duo package?

• Rinnai Heavy Duty water heater(s)
• 32mm foam insulated copper manifold for DD2-6 c/w 20mm union and
  isolation valves on Hot, Cold & Gas - mounted on rapid rail sub frame
• Stainless Steel Tank 850kPa PTR valve(s) - 32mm connections
• Pre-wired Thermostat, 240V power connection point(s) for pump
• Primary Pump(s)

Optional Extras:

• Single and Dual Flow and Return Pumps
• Pump Control Boxes
• Wall Mounting & Freestanding Frames
• Skid Mounted System c/w electrical, tank manifolds for multiple systems
  & aluminium cladding (as required per project)
• Pre-wired General Power Outlet (GPO) Package

Note: GPO is required for the storage tank (thermostat) and each HD unit.