Demand Duo integrated floor system

Overview

Combines the benefits of continuous flow and storage—high output and minimal storage loss without limiting peak flow rate
  • Cost effective installation with pre-constructed skids
  • Connect multiple skids in parallel for larger systems
  • Compatible with circulating ring mains
  • Cost effective and easier to maintain than boiler systems

Ideal for commercial applications where the total water drawn during the day's peak is known, but the rate of water use varies. For example; central hot water systems for hotels, motels, and apartment blocks.

Hard or aggressive water will need to be treated in order to use this system. If in doubt please test before use.

Read More


Technical Specifications

Input

398-995 MJ/h

Output

94-222.5 kW

Models, codes, and configurations
Model Code Configuration Input MJ/h Output kW
DD 400 ext RCWDD400E315N/L 2 x HD200 ext 398 94
DD 600 ext RCWDD600E315N/L 3 x HD200 ext 597 141
DD 800 ext RCWDD800E315N/L 4 x HD200 ext 796 188
DD 1000 ext RCWDD1000E315N/L 5 x HD200 ext 995 235
DD 400 int RCWDD400FF315N/L 2 x HDi200 int 390 90.2
DD 600 int RCWDD600FF315N/L 3 x HDi200 int 790 135.3
DD 800 int RCWDD800FF315N/L 4 x HDi200 int 858 180.4
DD 1000 int RCWDD1000FF315N/L 5 x HDi200 int 975 225.5
DD 420 ext customised 2 x N56 ext 418 111
DD 630 ext customised 3 x N56 ext 627 166.5
DD 840 ext customised 4 x N56 ext 836 222
DD 500 ext customised 2 x HD250 ext 500 119.8
DD 750 ext customised 3 x HD250 ext 750 179.7
DD 420 int customised 2 x N56 int 418 111
DD 630 int customised 3 x N56 int 627 166.5
DD 840 int customised 4 x N56 int 836 222
Delivery rates

Refer installation guide. Please note the EF models have been superseded by the N-Series.

Connections
  • Gas 32 mm
  • Water 32 mm
  • TRP 20 mm
Supply pressures
  • NG: 1.13-3.5 kPa
  • LPG: 2.75 kPa
Primary pump

Grunfos CM5-2

Ingress protection rating

IPX4 (cylinder, control box, and Rinnai INFINITY)

Why Rinnai?

Our stylish and efficient heating and cooling solutions are designed to bring you total home comfort.

FIND OUT MORE

Product Registration

Simply enter the product code and serial number to register a Rinnai product.

REGISTER A PRODUCT