Rinnai Demand Duo DD1 200 User manual

Operation / Installation Manual
Rinnai Demand Duo Systems
Part No. 15401029 - Version 8
All Rinnai gas products
are A.G.A. certified.
W169
SAI Global
W208
SAI Global
IMPORTANT
NOTE
WARNING
All Rinnai Demand Duo (DD) systems and components are Watermark Certified by SAI Global as applicable.
The Rinnai DD1 model is certified as a gas storage water heater by the Australian Gas Association (AGA).
AGA CERTIFICATION APPLIES TO DD1 MODELS ONLY. AGA CERTIFICATION DOES NOT
APPLY TO OTHER DD MODELS IN THIS MANUAL.
Important Notice for Installers
Please leave these instructions with the end user after commissioning of the system and alert the end user of the
content in the sections “Warnings” and “Periodic Inspection” and “Maintenance”.
Not suitable as a pool or spa heater.
This appliance shall be installed in accordance with:
• Manufacturer’s Installation Instructions
• Current AS/NZS 3000, AS/NZS 3500 & AS/NZS 5601
• Local Regulations and Municipal Building Codes
This appliance must be installed, serviced and removed by an
Authorised Person.

Rinnai Australia i Operation / Installation Manual
IMPORTANT INFORMATION & WARNINGS ........................................................................1
Safety and Regulatory Information ....................................................................................................1
WARNINGS ............................................................................................................................1
Hydrogen Gas ...................................................................................................................................2
Water Temperature ...........................................................................................................................2
Gas boosted models only ..................................................................................................................3
Safety Devices .................................................................................................................................. 3
Water Quality ....................................................................................................................................3
Regular Care .....................................................................................................................................3
Pressure and Temperature Relief (PTR) valve ................................................................................. 3
Expansion Control Valve (ECV) - if fitted ..........................................................................................4
Servicing and Repair ......................................................................................................................... 4
Insufficient or no hot water ................................................................................................................ 4
Water Heater Valves Discharging Excessively ................................................................................. 4
Expansion Control Valve (ECV) - if fitted ..........................................................................................5
Service .............................................................................................................................................. 5
GENERAL INSTALLATION INSTRUCTIONS .......................................................................6
Regulations ....................................................................................................................................... 6
Appliance Location ............................................................................................................................6
HD200e, HD250e, HDC211e (External Models) ............................................................................... 6
HD200i, HDC211i (Internal Models) ..................................................................................................6
Horizontal Obstructions .....................................................................................................................7
Horizontal Flue Terminal Clearances (Extract from AS/NZS 5601) .................................................. 8
Co-Axial Flueing for Internal Models ................................................................................................. 9
Multiple Flue Terminals ...................................................................................................................10
Common Flue System for Internal models ...................................................................................... 11
Installation ....................................................................................................................................... 11
Assembly .........................................................................................................................................12
DD1 Models, Drawing and Specifications ....................................................................................... 13
DD2-DD6 Models Drawing and Specifications ................................................................................ 19
Cold Water Supply ..........................................................................................................................22
Hot Water Outlet .............................................................................................................................22
Return Pump ................................................................................................................................... 22
Gas Supply ......................................................................................................................................22
Filling Instructions ...........................................................................................................................22
Starting Instructions ........................................................................................................................22
INSTALLATION HAND OVER MANUAL .............................................................................23
Demand Duo Principle of Operation ...............................................................................................23
Thermostat Operation .....................................................................................................................23
Demand Duo Preventative Maintenance ........................................................................................ 23
Tank ................................................................................................................................................ 24
Primary Pump ................................................................................................................................. 24
INFINITY Heat Source .................................................................................................................... 24
INFINITY Fault Codes ..................................................................................................................... 25
Ringmain Pump ...............................................................................................................................26
Service ............................................................................................................................................ 26
CONTACT INFORMATION ..................................................................................................29
TABLE OF CONTENTS

Rinnai Australia 1 Operation / Installation Manual
Safety and Regulatory Information
The Rinnai Demand Duo systems and components are Watermark Certified by SAI Global as
applicable.
The Rinnai DD1 model is certified as a gas appliance by the Australian Gas Association (AGA).
This appliance must be installed correctly by an authorised person and must conform to location
regulations.
The installation must also comply with the instructions supplied by Rinnai. Please keep this instruction
booklet in a safe place for future reference.
This appliance is not intended for use by persons (including children) with reduced physical, sensory
or mental capabilities, or lack of experience and knowledge, unless they have been given supervision
or instruction concerning use of the appliance by a person responsible for their safety.
Any power leads from the water heater system components MUST BE plugged into an external
weatherproof electrical outlet. If the power supply cord of the system is damaged, it MUST BE
replaced by an authorised person in order to avoid a hazard, using genuine replacement parts
available from Rinnai. Take care of not to touch the power plugs with wet hands.
Notice to Victorian Consumers
This appliance must be installed by a person licensed with the Plumbing Industry Commission.
Only a licensed person will have insurance protecting their workmanship.
So make sure you use a licensed person to install this appliance and ask for your Compliance
Certificate.
For Further information contact the Plumbing Industry Commission on 1800 015 129.
Installation and service only by an authorised person.
•DO NOT operate this appliance before reading the manufacture instructions.
•DO NOT remove covers while power is on.
•DO NOT place articles on or against this appliance.
•DO NOT operate with panels, covers or guards removed from this appliance.
•DO NOT enclose this appliance.
•DO NOT store chemicals or flammable materials near this appliance.
AGA Certification covers DD1 models only. AGA Certification does not apply to
other DD models covered in this manual.
NOTE
IMPORTANT INFORMATION & WARNINGS
WARNINGS

Rinnai Australia 2 Operation/ Installation Manual
Hydrogen Gas
If the hot water heater is not used for two weeks or more, a quantity of hydrogen gas, which is highly
flammable, may accumulate in the water heater. To dissipate this safety, it is recommended that a
non-electrically operatedhot tap be turned on for several minutes at a sink, or bath, but at dishwasher
or other appliance. During this procedure there must be not smoking, open flame or any electrical
operating nearby. If hydrogen gas is discharged through the tap, it will probably make a sound like air
escaping.
Water Temperature
To meet regulatory requirements the temperature of stored water heater must not be less than 60°C.
The thermostat on your storage tank is factory pre-set to 65°C. The outlet temperature setting of the
INFINITY is factory pre-set to 75°C.
The Thermostat setting must only be adjusted by an Electrician or other suitably
qualified trades person.
The access cover to the control system must only be removed by an Electrician
or other suitably qualified trades person.
Scald Hazards
Hot Water can cause scalds.
Children, disabled, and the elderly are at the highest risk of
being scalded.
Feel water temperature before bathing or showering.
Scalds from hot water taps can result in severe injuries to
young children.
Scalds can occur when children are exposed directly to hot
water when they are placed into a bath which is too hot.
DO
•Do stay with children whenever
they are in the bathroom (Take the
phone off the hook).
•Dotakethemout ofthebathroomif
you need to answer the phone or
door.
•Do test the temperature of the
water with your elbow before
placing your child in the bath.
•Domake surethatthe tapisturned
off tightly.
•Do install a child proof tap cover
OR
•Do install a child resistant tap.
•Consider child-resistant taps or
tapcovers,whichpreventa small
hand being able to turn on the
tap.
•Consider installing tempering
valves or thermostatic mixing
valves which reduce the hot
water temperature delivered to
taps. Your local plumbing
authoritymayalreadyrequirethat
these be fitted. Contact your
installer or local plumbing
authority if in doubt.
DON’T
•DO NOT leave a
toddler in the care of
anothersmallchild.The
older child may not
have set the water
temperature to a safe
level.
NOTE
IMPORTANT INFORMATION & WARNINGS

Rinnai Australia 3 Operation / Installation Manual
Safety Devices
The water heating system is supplied with various safety devices including temperature sensors,
overheat sensors and switches and a Pressure & Temperature Relief (PTR) valve. These devices
must not be tampered with or removed. The water heating system must not be operated unless each
of these devices is fitted and is in good working order.
Water Quality
The water quality of most public supplies is suitable for the hot water system. The water quality from
bore wells is generally unsuitable for the hot watersystem. Refer to the 'Warranty Conditions' for water
quality parameters and how they affect the warranty conditions. If in doubt about the water quality,
have it checked against the parameters listed in the warranty conditions.
If sludge or foreign matter is present in the water supply, a suitable strainer filter should be
incorporated in the water supply to the system.
Regular Care
Over flow tray and drain.
The overflow tray and drain (if fitted) shouldbe periodically checked to ensure there are no blockages.
Pressure and Temperature Relief (PTR) valve
This valve is located near the top of the water heater and is essential for
safe operation. It is normal for the valve to release a small quantity of
water through the drain line during heating.
However, continuous leakage of water from the valve and its drain line
may indicate a problem with the water heater.
Gas boosted models only
•Do not touch the flue outlet or do not insert any objects
into the flue outlet.
•Keep flammable materials, spray cans, fuel containers,
trees, shrubs and pool chemicals etc. well clear of the
flue outlet.
•Do not use the gas types other than those designated on
the data plate. For example, do not use Propane/Butane
gas mixtures on appliances marked Propane Gas.
•Do not use Propane gas on appliances marked as
Natural Gas and vice versa.
•DO NOT tamper with or remove safety devices.
•DO NOT operate the water heater unless all safety devices are fitted and in
good working order.
•DO NOT block or seal the PTR Valve and drain pipe.
Never block the outlet of the PTR valve or it’s drain line for any reason. The easing gear
must be operated at least every 6 months to remove lime deposits and verify that it is
not blocked. Failure to do this may result in the water heater failing.
If the valve does not discharge water when the easing gear lever is opened, or does
not seal again when the easing gear is closed, attendance by an authorised person
must be arranged without delay.
The PTR valve is not serviceable.
HOT!
WARNING
Lift lever until water
flows from drain line
(Lower lever gently!)
WARNING
IMPORTANT INFORMATION & WARNINGS

Rinnai Australia 4 Operation/ Installation Manual
Expansion Control Valve (ECV) - if fitted
Operate the easing lever on the expansion control valve once every six months. It is very important
you raise and lower the lever gently.
Servicing and Repair
Our servicing network personnel are fully trained and equipped to give the best on your Rinnai
appliance. If your appliance needs service, ring one of the service contact numbers on the back of this
booklet.
The pressure and temperature relief valve and expansion control valve must be checked for
performance or replaced by an authorised person at intervals not exceeding 5 years or more
frequently in areas where the water is classified as scaling water (see 'Water Quality').
If the electric conduit, power supply cord or plug to hot water system is damaged, they must be
replaced by an authorised person in order to avoid a hazard. The power supply cord and plug must
be replaced by a genuine replacement part available from Rinnai.
Insufficient or no hot water
Is there electricity supply to the water heater?
•Check to ensure the electric isolating switch(es) at the switchboard (usually marked "Hot
water" or "Water heater") is switched 'ON'.
•Check to ensure that the electric fuses for hot water at the switchboard are intact.
Is there insufficient gas supply for gas booster?
•Check gas is available and turned 'ON'.
•Check the isolation valve in the gas line is opened.
•Refer to your plumber to ensure the gas line has been purged of air after installation.
Are you using more hot water than you think?
•Often end users are surprised at the amount of hot water used, especially when
showering. If the amount of hot water used during the day exceeds the storage capacity of
the hot water system, it is likely that there will be insufficient hot water. Has your plumber
install water saving fixture and/or flow control or pressure limiting valves to reduce
consumption.
Are hot water system valves discharging excessively?
•Refer to the section "hot water system valves discharging excessively".
High gas bills
•If you think your gas bill is too high, investigate the following:
•You may be using more hot water than you think. This applies especially to showering.
Review hot water usage, especially the time taken for showering, and investigate the use
of flow control valves or 'water saving' shower roses. Investigate recent changes to hot
water usage patterns.
•Water heater valves may be discharging excessively. Refer to the section "hot water
system valves discharging excessively".
•There may be hot water leakages in hot water pipes or taps. Have these checked and
rectified by a plumber.
If, after investigating the above, you still require assistance contact Rinnai.
Water Heater Valves Discharging Excessively
Pressure & Temperature Relief (PTR) Valve
It is normal and desirable that this valve allows a small quantity of water to be discharged during the
heating cycle. If it discharges more than a bucket of water during a 24 hour period or discharges
continuously there may be another problem.
If the valve dribbles continuously, try easing the valve gear for a few seconds as described above.
This may dislodge any foreign matter and alleviate the problem.
IMPORTANT INFORMATION & WARNINGS

Rinnai Australia 5 Operation / Installation Manual
If the valve discharges at high flows, especially at night, it may be as a result of the water pressure
exceeding the design pressure of the water heater. Ask your installer to fit a Pressure Limiting Valve
(PLV).
Expansion Control Valve (ECV) - if fitted
It is normal and desirable that this valve allows a small quantity of water to be discharged during the
heating cycle. If it discharges more than a bucket of water during a 24 hour period or discharges
continuously there may be another problem.
If the valve leaks continuously, try easing the valve gear for a few seconds. This may dislodge any
foreign matter and alleviate the problem. If this does not alleviate the problem contact Rinnai.
Operate the easing gear regularly to remove any lime deposits and to verify that it is not blocked.
Service
The system should be checked and serviced by an authorised person at least every 5 years.
The PTR valve must be replaced at intervals not exceeding five (5) years.
Rinnai has a service and spare parts network with personnel who are trained and equipped to give
the best service on Rinnai appliances.
• NEVER replace the PTR valve with one which has a higher pressure rating than is
specified for your water heater.
• If the valve discharges hot water at high flows until the water heater is cold and
then stops discharging until the water reheats there may be a serious problem.
Switch off the power supply in the meter box (the switch marked “WATER
HEATER” or “HOT WATER”) or the insolating switch installed near the water
heater and contact Rinnai.
WARNING
IMPORTANT INFORMATION & WARNINGS

Rinnai Australia 6 Operation / Installation Manual
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 pointingdownwards. 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
instructions. Note: that AS/NZS 5601 is current at the time of printing. It is the installers’
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 7 Operation / Installation Manual
If installed in an enclosure either Internally or Externally, the location should be ventilated to allow gas
to dissipate and provision must be made for the safedisposal of any leaking water to a visible location.
This appliance must not be used as a domestic spa or swimming pool heater.
Two types of flue systems are available:
1. The Rinnai Commercial Common Flue System. This system is certified and suitable for use with
Rinnai non-condensing internal commercial continuous flow water heaters.
2. The Rinnai Co-Axial FFU flue system. This system is certified and suitable for use with Rinnai
condensing and non-condensing internal commercial continuous flow water heaters.
Non-Condensing models are:
REU-V2632FFUC, REU-VM2632FFUC and REU-VRM2632FFUC.
Condensing models are:
REU-KM2635FFUD, REU-KM2635FFUDC, REU-KM3237FFUD and REU-KM3237FFUDC.
The use of non Rinnai flue components may result in a dangerous situation and violates regulations.
The appliance(s) must be located so that the flue terminal exits the building at a suitable point.
For detailed information refer to “FLUEING FOR INTERNAL MODELS” on page 9.
This appliance must be located so that the flue terminal exits the building at a suitable point.
If a horizontal (wall) terminal FFWALLTERM is used, the location must be in accordance with
Section 6 and Figure 6.2 of AS/NZS 5601. Figure 6.2 is reproduced under ‘HORIZONTAL FLUE
TERMINAL CLEARANCES’ on page 8 of this manual.
If a vertical (roof) terminal FFROOFCOWL is used, the location must be in accordance with
Section 6 of AS/NZS 5601 and the ‘FLUEING FOR INTERNAL MODELS’ on page 9.
Horizontal Obstructions
AS/NZS 5601-2010 ‘Gas Installations’ stipulates
a minimum horizontal clearance of 500 mm
between a building structure and obstruction
facing the terminal. For Rinnai External
continuous flow water heaters such a building
structure must ‘obstruct’ the full front cover height
of the appliance, or extend vertically above and
below the front cover. There must be no partial
obstructions to the front cover of the appliance or
any other parts of the appliance casing. This will
avoid the appliance failing to operate under windy
conditions.
500mm
GENERAL INSTALLATION INSTRUCTIONS

Rinnai Australia 8 Operation / Installation Manual
Horizontal Flue Terminal Clearances (Extract from AS/NZS 5601)
Flue terminal Fan assisted flue appliance only Gas meter Electricity meter or fuse box Mechanical air inlet
Natural draft Fan assisted
•Appliances up to 50 MJ/h input 300 200
•Appliances over 50 MJ/h input 500 300
b From the ground, above a balcony or other surface * 300 300
c Front a return wall or external corner * 500 300
dFrom a gas meter (M) (see 5.11.5.9 for vent terminal location of regulator ) (see Table 6.6 for New Zealand requirements) 1000 1000
e From an electricity meter or fuse box (P) † 500 500
f From a drain pipe or soil pipe 150 75
g Horizontally from any building structure* = or obstruction facing a terminal 500 500
h From any other flue terminal , cowl, or combustion air intake † 500 300
•Appliances up to 150 MJ/h input * 500 300
•Appliances over 150 MJ/h input up to 200 MJ/h input * 1500 300
•Appliances over 200 MJ/h input up to 250 MJ/h input * 1500 500
•Appliances over 250 MJ/h input * 1500 1500
• All fan-assisted flue appliances , in the direction of discharge - 1500
k From a mechanical air inlet, including a spa blower 1500 1000
• Space heaters up to 50 MJ/hr input 150 150
• Other appliances up to 50 MJ/hr input 500 500
•Appliances over 50 MJ/h input and up to 150 MJ/h input 1000 1000
•Appliances over 150 MJ/h input 1500 1500
1Where dimensions c, j or kcannot be achieved an equivalent horizontal distance
measured diagonally from the nearest discharge point of the terminal to the opening
may be deemed by the Technical Regulator to comply.
2See Clause 6.9.4 for restrictions on a flue terminal under a covered area.
3See Figure J3 for clearances required from a flue terminal to an LP Gas cylinder.
Aflue terminal is considered to be a source of ignition.
4
Ref. Item
a
Min. clearances (mm)
Below eaves, balconies and other projections:
j
Horizontally from an openable window, door, non-mechanical air inlet, or any other opening into a building
with the exception of sub-floor ventilation:
Vertically below an openable window, non-mechanical air inlet, or any other opening into a building with the
exception of sub-floor ventilation:
NOTES:
† - Prohibited area below electricity meter or fuse box extends to ground level.
FIGURE 6.2 (in-part) MINIMUM CLEARANCES REQUIRED FOR BALANCED FLUE TERMINALS, FAN-ASSISTED FLUE
TERMINALS, ROOM-SEALED APPLIANCE TERMINALS AND OPENINGS OF OUTDOOR APPLIANCES
* - unless appliance is certified for closer installation
For appliance snot addressed above acceptance should be obtained from the Technical Regulator.
n
GENERAL INSTALLATION INSTRUCTIONS

Rinnai Australia 9 Operation / Installation Manual
Co-Axial Flueing for Internal Models
This system is certified and suitable for use with Rinnai non-condensing internal commercial
continuous flow water heaters.
The Rinnai INFINITY Flueing system must be installed in accordance with the instructions supplied
with the flue terminal. Non Rinnai flueing systems MUST NOT be used.
Installations can consist of both horizontal and vertical runs to a maximum of 9 metres with a
maximum of three 90° bends.
DD1 & Manifold Pack 3 with Horizontal Flueing
The Rinnai internal flueing system is highly
versatile and makes installation of an internal
water heater simple and convenient.
The flueing for internal water heaters is a
Co-Axial design. It is manufactured from an
aluminium alloy inner flue pipe to discharge
product of combustion and a thermoplastic
outer pipe for air supply to the appliance. The
water heater is a room sealed appliance.
NOTE: Each Rinnai water heater is
flued individually.
As it is fan assisted, the water heater can be
flued vertically, horizontally or any
combination of both, to a maximum of 9
metres and 3 x 90 degree bends.
Horizontal flueing can be used as a direct wall
flue or extended from another internal wall.
DD6 Internal Flued System
Vertical flueing is used when the water heater
needs to be flued vertically through the roof.
A condensate trap is required when vertical
flue exceeds 1.5 metres.
Rinnai HD internal water heaters are
classified as ‘room sealed’ appliances. Flue
systems must be installed in accordance with
Rinnai Installation Instructions (supplied with
flue terminals), local gas fitting regulations,
municipal building codes, AS/NZS 5601 and
all other relevant statutory regulations.
The flue terminal clearances in AS/NZS 5601
do not apply to the HD200e, HD250e or
HDC211e heaters installed side by side.
These appliance are AGA certified to be
located side by side, for both internal an
external models.
DD6 Direct Wall Flue
CO-AXIAL INTERNAL FLUEING ORDER CODES
a. Elbow 90° Bend & Adaptor FFBEND90BA
b. Ceiling / Wall Ring FFWSEAL
c. External Wall Plate FFWPLATE
d. Horizontal Flue Terminal FFWALLTERM
e. Universal Bend (2 x 45°) FFBEND
f. Flue Pipe 1000 mm length* FFPIPE1000
g. Vertical Flue Terminal* FFROOFCOWL
h. Condensate Trap FFCONDK
i. Vertical Adaptor FFADPT
* Supplied with pipe clip
Discuss with your Rinnai Commercial representative
for further details.
GENERAL INSTALLATION INSTRUCTIONS

Rinnai Australia 10 Operation / Installation Manual
If flue length exceeds 1.5 metres, dip-switch 1 of SW1 located inside the HD unit is to be switched to
the ‘OFF’ position.
For all further information on Internal Flueing, please refer to separate Flueing manual supplied with
Flueing components.
Multiple Flue Terminals
Dimension 'H' in AS/NZS 5601 Figure 6.2 does not apply when multiple Rinnai external water heaters
of the same model are installed on the same vertical face with flue terminals at the same height. Under
these conditions appliances can abut each other as shown below:
The terminal clearances stated in AS/NZS 5601 do not apply to the INFINITY HD200 and 26 litre
internal water heaters when they are installed side by side. AGA certification allows for a minimum
horizontal separation of 160 mm for roof terminals and 270 mm for wall terminals.
Only Rinnai Flueing systems can be used with Internal Water Heaters. Non-Rinnai
Flueing systems are not certified and will not be covered under warranty.
NOTE
UP UP UP
FFROOFCOWL
FFWPLATE
350
160
225
270
Minimum clearance 500
FFWALLTERM
FFPIPE1000
FFCPIPE
GENERAL INSTALLATION INSTRUCTIONS

Rinnai Australia 11 Operation / Installation Manual
Common Flue System for Internal models
The Rinnai Commercial Common Flue System is certified and suitable only for use with Rinnai non-
condensing internal commercial continuous flow water heaters. It is NOT suitable for use with Rinnai
condensing water heaters. Refer suitable model listing below:
Suitable only for use with the following non-condensing models:
REU-V2632FFUC, REU-VM2632FFUC and REU-VRM2632FFUC.
NOT suitable for use with condensing models:
REU-KM2635FFUD, REU-KM2635FFUDC, REU-KM3237FFUD and REU-KM3237FFUDC.
A Common Flue System can be used. This system utilises adaptors to connect multiple Internal Water
Heaters to a Natural Draft Flue. (see the instruction manual supplied with the Rinnai Common Flue
for details).
Installation
Unpacking DD1
Remove outer cardboard box. Remove screws attaching feet on tank to wooden pallet. Carefully
remove system from pallet and inspect for any transport damage. Ensure that PTR valve and brass
plug 32 mm supplied in box is located and stored. DO NOT install if any components are damaged.
Unpacking DD2 - DD6
Tank:
Remove outer cardboard box. Remove screws attaching feet on tank to wooden pallet.
Carefully remove tank from pallet and inspect for any transport damage. Ensure that PTR valve,
supplied in box is located and stored. DO NOT install if any components are damaged.
HD water heaters:
With cardboard box in upright position, remove packing straps and slide lid upwards. Remove water
heater from base when required for installation.
Manifold:
Remove manifold, pump and PTR valve(s) and fittings as per bill of materials table below:
All Rinnai Demand Duo systems with HD200 water heaters have the manifold and
flue centres at 375 mm. This is slightly further apart than above and is acceptable.
NOTE
GENERAL INSTALLATION INSTRUCTIONS

Rinnai Australia 12 Operation / Installation Manual
Assembly
Demand Duo 1
• Position tank in desired position.
• Attach PTR valve supplied in box to 20mm port at top of tank. As for the DD1 200e / 200i 250L or
315L, plug off second port with 20mm plug supplied. For DD1 250e/211e/211i 250L or 315L,
attach another PTR valve to second port at the top of tank.
• Plug off second cold inlet port at the bottom of the tank with 32 mm plug supplied with tank.
• Run PTR valve drains to suitable discharge position.
Demand Duo 2 - Demand Duo 6
• Position tank in desired position.
• Attach PTR valve supplied in tank box to 20mm port at top of tank.
• Attach second valve to the other 20 mm port at top of tank.
• Attach the third PTR valve on a DD3 to the hot outlet with the 32 mm threaded tee, nipple and 32
mm male/20mm female reducer supplied.
• Run PTR valve drains to suitable discharge position.
• Mark line on wall where top of HD water heaters are to be located.
- A useful nominal height is 1500mm from floor level. This may change depending on desired
position of flue terminal. It may be higher in trafficable areas or to reduce vertical flue length, for
example.
• For HD200 heaters on DD2,3, 4, 5 and 6, mark 375 mm centres, allowing sufficient space
between tank and the nearest heater for the primary pump(s) and pipework. For HD250e/
HDC211e/HDC211i on DD2 - DD6 mark 500mm centres.
• Attach first heater to wall, preferably a centre heater.
• Connect manifold to heater and confirm that marked centres match the manifold.
• Attach rest of heaters to wall and connect manifold.Attach 32mm tee to cold inlet on tank, with
union as required. Cold inlet is lowest fitting on the tank, 285 mm from the tank base.
PTR VALVE
packed with Tank PTR VALVE packed with manifold
BOILER VALVE
packed with
manifold
FITTINGS
packed with
manifold
DD1 200
External/Internal 1 * HT 575 N/A N/A N/A
DD1 250
External 2 * HT 575 N/A N/A N/A
DD1C 211
External/Internal 2 * HT 575 N/A N/A N/A
DD2 200
External/Internal 1 * HT 575 1 * HT 575 N/A N/A
DD2C 211
External/Internal 1 * HT 575 1 * HT 575 N/A N/A
DD3 200
External/Internal 1 * HT 575 2 * HT 575 N/A 32mm Tee
DD3C 211
External/Internal 1 * HT 575 2 * HT 575 N/A 32mm Tee
DD4 200
External/Internal 1 * HT 575 N/A 1 * Valve N/A
DD4C 211
External/Internal 1 * HT 575 N/A 1 * Valve N/A
DD5 200
External/Internal 1 * HT 575 N/A 1 * Valve N/A
DD5C 211
External/Internal 1 * HT 575 N/A 1 * Valve N/A
DD6 200
External/Internal 1 * HT 575 N/A 1 * Valve N/A
DD6C 211
External/Internal 1 * HT 575 N/A 1 * Valve N/A
* ALL HT 575 PTR valves are rated at 850 kPa - RA Part No. 11004781
GENERAL INSTALLATION INSTRUCTIONS

Rinnai Australia 13 Operation / Installation Manual
• Join inlet of primary pump to tee at cold inlet fitting on tank with 32mm pipe.
• Join outlet of primary pump to inlet of cold (bottom) pipe on manifold.
• Fit cover so that pump is weatherproof. Ensure power cable enters pump from below and that it
is not a track for water to enter pump.
• Remaining port on the tee is the cold water inlet to the system. It is also the ringmain return
point.
• Extend 32 mm hot return pipe (centre pipe) from end of manifold to the return fitting on the tank
with union as required. This fitting is 385 mm from the tank base.
• System is now ready to be plumbed to the building.
• Plug primary pump(s) into the thermostatic controller mounted on the tank.
• Plug power supply to the thermostatic controller into an available GPO. DO NOT turn ‘ON’.
• Plug water heaters on DD2 - DD6 to an available GPO (one per heater is required). DO NOT
turn ‘ON’.
When direct flueing through the wall that the water heaters are mounted on, it
may be necessary to attach flue to water heater and push it through the wall
before attaching the water heater to the wall.
Primary pump and/or primary pipe work may need to be increased for long runs of
primary pipe work, or installation with many bends in the pipe work between tank
and manifold.
DD1 Models, Drawing and Specifications
All Dimensions are (mm)
DD Model PTR
Inclusions Primary pump MJ Rating (HD Water
Heater)
Total
System
Weight
(kG)
Fittings
Hot Cold PTR Gas
*DD1 200e/
250 ext 1 * HT 575 (46 kW) UPS20 - 60B 199 110 RP1 1/4” (32mm) *RP1 1/4” (32mm) RP 3/4” (20mm) RP 3/4” (20mm)
DD1C 211e
250 ext 2 * HT 575 (46 kW) UPS25 - 80B 211 125 RP1 1/4” (32mm) *RP1 1/4” (32mm) RP 3/4” (20mm) RP 3/4” (20mm)
DD1 200e/
315 ext 1 * HT 575 (46 kW) UPS20 - 60B 199 120 RP1 1/4” (32mm) RP1 1/4” (32mm) RP 3/4” (20mm) RP 3/4” (20mm)
*DD1 200i/
250 int 1 * HT 575 (46 kW) UPS20 - 60B 199 110 RP1 1/4” (32mm) *RP1 1/4” (32mm) RP 3/4” (20mm) RP 3/4” (20mm)
DD1C 211e
315 ext 2 * HT 575 (46 kW) UPS25 - 80B 211 125 RP1 1/4” (32mm) *RP1 1/4” (32mm) RP 3/4” (20mm) RP 3/4” (20mm)
DD1 200i/
315 int 1 * HT 575 (46 kW) UPS20 - 60B 199 120 RP1 1/4” (32mm) RP1 1/4”
(32mm) RP 3/4” (20mm) RP 3/4” (20mm)
DD1C 211i
250 int 2 * HT 575 (46 kW) UPS25 - 80B 211 125 RP1 1/4” (32mm) *RP1 1/4” (32mm) RP 3/4” (20mm) RP 3/4” (20mm)
*DD1 250e/
250 ext 2 * HT 575 (92 kW) UPS20 - 60B 250 120 RP1 1/4” (32mm) *RP1 1/4” (32mm) RP 3/4” (20mm) RP 3/4” (20mm)
DD1C 211i/
250 int 2 * HT 575 (46 kW) UPS25 - 80B 211 125 RP1 1/4”
(32mm) *RP1 1/4” (32mm) RP 3/4” (20mm) RP 3/4” (20mm)
DD1 250e/
315 ext 2 * HT 575 (92 kW) UPS20 - 60B 250 130 RP1 1/4” (32mm) RP1 1/4” (32mm) RP 3/4” (20mm) RP 3/4” (20mm)
*DD 250 1 * HT 575
(46 kW) N/A N/A 73 RP1 1/4” (32mm) *RP1 1/4” (32mm) RP 3/4” (20mm) RP 3/4” (20mm)
DD 315 1 * HT 575
(46 kW) N/A N/A 88 RP1 1/4” (32mm) RP1 1/4” (32mm) RP 3/4” (20mm) RP 3/4” (20mm)
DD COMBO
250 1 * HT 575 (46 kW) N/A N/A 75 RP1 1/4” (32mm) RP1 1/4” (32mm) RP 3/4”
(20mm) RP 3/4” (20mm)
DD COMBO
315 1 * HT 575 (46 kW) N/A N/A 90 RP1 1/4” (32mm) RP1 1/4” (32mm) RP 3/4” (20mm) RP 3/4” (20mm)
DD1 250L only tank supplied with 32 mm brass plug to plug one of the unused cold
inlet ports.
NOTE
NOTE
NOTE
GENERAL INSTALLATION INSTRUCTIONS

Rinnai Australia 14 Operation / Installation Manual
DD1 200e / 250L & 315L
NOTE: PLUG UNUSED COLD INLET PORT WITH BRASS PLUG 32 MM SUPPLIED WITH TANK
845
SECOND COLD INLET OR
INCLUDED
250L: 700 315L: 385
850 kPa PTR
GENERAL INSTALLATION INSTRUCTIONS

Rinnai Australia 15 Operation / Installation Manual
DD1 200i / 250L & 315L
NOTE: PLUG UNUSED COLD INLET PORT WITH BRASS PLUG 32 MM SUPPLIED WITH TANK
845
250L: 700 315L: 385
SECOND COLD INLET OR
GENERAL INSTALLATION INSTRUCTIONS

Rinnai Australia 16 Operation / Installation Manual
DD1 250e / 250L & 315L
NOTE: PLUG UNUSED COLD INLET PORT WITH BRASS PLUG 32 MM SUPPLIED WITH TANK
x2
SECOND COLD INLET OR
250L: 700 315L: 385
GENERAL INSTALLATION INSTRUCTIONS

Rinnai Australia 17 Operation / Installation Manual
DD 250L & 315L
NOTE: PLUG UNUSED COLD INLET PORT WITH BRASS PLUG 32 MM SUPPLIED WITH TANK
x2
ALTERNATE RETURN
COLD IN
250L: 700 315L: 385
GENERAL INSTALLATION INSTRUCTIONS