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GENERAL INSTALLATION INSTRUCTIONS
These instructions apply to the Demand Duo range of Rinnai water heaters:
Models Covered
DD1 200 (external or internal) 250 or 315 (litre tank) N or L (Natural gas or LPG)
DD1 250 (external) 250 or 315 (litre tank) N or L (Natural gas or LPG)
DD1C 211 (external or internal) 250 or 315 (litre tank) N or L (Natural gas or LPG)
DD2 200 (external or internal) 250 or 315 (litre tank) N or L (Natural gas or LPG)
DD2C 211 (external or internal) 250 or 315 (litre tank) N or L (Natural gas or LPG)
DD3 200 (external or internal) 250 or 315 (litre tank) N or L (Natural gas or LPG)
DD3C 211 (external or internal) 250 or 315 (litre tank) N or L (Natural gas or LPG)
DD4 200 (external or internal) 250 or 315 (litre tank) N or L (Natural gas or LPG)
DD4C 211 (external or internal) 250 or 315 (litre tank) N or L (Natural gas or LPG)
DD5 200 (external or internal) 250 or 315 (litre tank) N or L (Natural gas or LPG)
DD5C 211 (external or internal) 250 or 315 (litre tank) N or L (Natural gas or LPG)
DD6 200 (external or internal) 250 or 315 (litre tank) N or L (Natural gas or LPG)
DD6C 211 (external or internal) 250 or 315 (litre tank) N or L (Natural gas or LPG)
Regulations
For continued safety of this appliance it must be installed, operated and maintained by authorised
person in accordance with manufacture's instructions, current with AS/NZS 3500 and AS/NZS 5601,
local regulations and municipal building codes.
Rinnai Demand Duo hot water systems are not suitable or approved as pool heater.
Read these instructions carefully before proceeding with the installation.
Appliance Location
Ensure reasonable access for installation, servicing and removal. All valves, controls and pumps etc
must be easily accessible.
Rinnai Demand Duo tanks and any free standing frames must be mounted on a solid level base,
capable of supporting the weight of the appliance when full of water. Ensure components are not
allowed to stand in water. Spacers under the tank are recommended in wet areas.
All Demand Duo tanks are "left handed" with the water connections to the left when viewing the
thermostat housing from the front.
These systems are combined with Rinnai INFINITY HD series, HD200e (VRM-2632WC), HD200i
(VRM-2632FFUC), HD250e (VRM-3237WC), HDC211e (KM3237WDC) and HDC211i
(KM3237FFUDC).
Rinnai INFINITY and HD units are fan assisted appliances and thus have lower clearances than a
natural draft appliance of the same MJ rating.
HD200e, HD250e, HDC211e (External Models)
This appliance is designed for 'Outdoor' Installation only. As such, it must be located in an above
ground open air situation with natural ventilation, without stagnant areas, where gas leakage and
products of combustion are rapidly dispersed by wind and natural convection.
This appliance must be mounted on a vertical structure with the water and gas connections on the
underside pointing downwards. For appliances installed on elevated structures or under floors specific
requirements apply. Refer to AS/NZS 5601 Section 6 for details.
This appliance must not be used as a domestic spa or swimming pool heater.
Location of the appliance flue terminal must be in accordance with Section 6 and Figure 6.2 of
AS/NZS 5601. Figure 6.2 is reproduced in the 'Horizontal Flue Terminal Clearances' section of these
Note: that AS/NZS 5601 is current at the time of printing. It is the installers'
instructions.
responsibility to ensure current requirements are met.
HD200i, HDC211i (Internal Models)
This appliance is designed for 'Indoor' installation only. It may be installed 'Outdoors' in an enclosure
if the requirements of AS/NZS 5601 Section 6 are satisfied. An enclosure is defined as a
compartment, enclosed are of partitioned off space primarily used for the installing of the appliance.
Rinnai Australia
6
Operation / Installation Manual
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