Rinnai S26i User manual

Continuous Flow Solar Hot Water Booster
Operation & Installation Manual
Models:
S26i (REU-VRM2632FFUG) (70)
S28i (REU-VCM2837FF) (70)
S32 (REU-VRM3237WG) (70)

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Congratulations on the purchase of your Rinnai Continuous Flow Solar Hot Water Booster. We trust you will have
many years of comfort and enjoyment from your appliance.
IMPORTANT
BEFORE USING THIS APPLIANCE
Before proceeding with the operation or installation read this manual thoroughly and gain a full
understanding of the appliance, to ensure safe and correct use.
This appliance must be installed in accordance with:
• Manufacturer’s Installation Instructions
• Current AS/NZS 3000, AS/NZS 3500 & AS/NZS 5601
• Plumbing Code of Australia (PCA)
• Local Regulations and Municipal Building Codes
including local OH&S requirements
This appliance must be installed, maintained and removed
by an Authorised Person.
For continued safety of this appliance it must be installed
and maintained in accordance with the manufacturer’s
instructions.
All Rinnai gas products
sold in Australia are
A.G.A. certified.

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TABLE OF CONTENTS
Warnings & Important Information 4
Regulatory Information ������������������������������������������������������������������������������������������������������������������������������������������������������� 4
Notice to Victorian Consumers ������������������������������������������������������������������������������������������������������������������������������������������ 4
Warning About Hot Water ��������������������������������������������������������������������������������������������������������������������������������������������������� 4
Applications ������������������������������������������������������������������������������������������������������������������������������������������������������������������������� 4
Operational Safety Information ����������������������������������������������������������������������������������������������������������������������������������������� 5
Features & Benets ����������������������������������������������������������������������������������������������������������������������������������������������������������� 5
Troubleshooting & Warranty Conditions ���������������������������������������������������������������������������������������������������������������������������� 5
Installation, Commissioning 6
Other Accessories ��������������������������������������������������������������������������������������������������������������������������������������������������������������� 6
Contacts 8

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REGULATORY INFORMATION
Your Rinnai Continuous Flow Solar water heater has been certied by the Australian Gas Association.
The A.G.A. Certication Number is shown on the data plate.
This Appliance must be installed correctly by an authorised person. The installation of gas, water, and electricity
must conform to local regulations.
The installation must also comply with the instructions supplied by Rinnai.
All dimensions referred to in these instructions are in millimetres, unless otherwise specied.
Please keep this instruction booklet in a safe place for future reference.
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 Certicate. For
Further information contact the Plumbing Industry Commission on 1300 815 127.
WARNING ABOUT HOT WATER
WARNING
This appliance MUST only be installed in accordance with the acceptable plumbing congurations
specied in these instructions. Failure to do so may result in conditions where delivery temperature
control is inadequate.
WARNING
This appliance may deliver water at high temperature. Refer to the Plumbing Code of Australia
(PCA), local requirements and installation instructions to determine if additional delivery
temperature control is required.
Hot water can cause scalding. Those most at risk are children and
disabled, elderly and inrm persons. (65°C water can severely burn
a child in half a second).
Rinnai have water heater models which limit the delivery temperature
to 50°C which signicantly reduces the scald hazard. Temperature
limiting devices may also be able to be tted. Contact Rinnai for
further information.
Always test the water temperature before use, such as when lling
a bath or basin or entering a shower, to ensure it is suitable for the
application and will not cause scald injury.
Always supervise children whenever they are in the bathroom or near
other sources of hot water. Ensure any hot water taps are closed
rmly after use.
APPLICATIONS
IMPORTANT
Rinnai continuous ow Solar models S26i,
S28i and S32 are suitable ONLY for installation
as gas boosters in Rinnai solar hot water
systems (see picture right).
These models are not suitable for use as
‘stand alone’ appliances for the purposes of
supplying hot water.
For non solar hot water applications Rinnai
have a dedicated range of continuous ow
water heaters available.
Contact Rinnai for more details.
Solar
storage
cylinder
Cold water
supply
Gas
boost
Solar collectors
To hot
water
outlets
in house
Rinnai Solar Continuous
Flow Hot Water Heater
This drawing is not detailed enough for installation purposes.
WARNINGS & IMPORTANT INFORMATION

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Operational Safety Information
Always check water temperature carefully before use.
Refer to the "WARNING ABOUT HOT WATER" on page 4 for important safety
information.
HOT!
DO NOT touch the unit cover or the ue outlet.
DO NOT insert objects into the ue outlet.
DO NOT spray water directly into the ue outlet.
Keep, trees, shrubs, etc. well clear of the ue outlet.
On colder days steam may discharged from the ue outlet. This condition is normal for
high efciency appliances and does not indicate a fault.
OFF!
At low water ows, the hot water unit may extinguish without warning.
Opening the tap further will restart the heating appliance.
DO NOT Spray aerosols in the vicinity of this appliance while it is in operation.
DO NOT use or store ammable materials in or near this appliance.
DO NOT place articles on or against this appliance.
DO NOT modify this appliance.
DO NOT store pool chemicals near this appliance.
ON!
OFF!
If freezing conditions are expected, ensure the electric
power supply to the gas booster remains ‘ON!’. This will
assure the automatic Anti-frost protection can operate
when required.
However if freezing conditions are expected and power
will not be available, then turn off water and gas, and
drain all water from the appliance.
Turn
Water Off
Turn
Gas Off
Drain Water Hot GasCold
Filter
Drain
Gas
Valve
Features & Benets
Congratulations on purchasing the latest technology Rinnai continuous ow water heating system.
• The Rinnai solar range of continuous ow water heaters NEVER RUN OUT of hot water even during times
of limited solar radiation and/or high hot water demand. Whilst the electricity, water and gas supplies are
connected, hot water is available whenever hot water taps are open.
• The Rinnai solar range of continuous ow water heaters are fan-assisted appliances. This makes them
COMPACT saving both oor and wall space.
• IGNITION IS ELECTRONIC, so there is no pilot light. When the hot water tap is off, no gas is used.
• Operating NOISE LEVEL IS VERY LOW.
• The "Smartstart®" system (when tted) can pre-heat the water in the pipework between the continuous ow unit
and hot water outlets. This results in water savings and reduces waiting time for heated water at the outlets.
Troubleshooting & Warranty Conditions
These are outlined in detail in the following Rinnai publications:
• Operation / Installation Manual Rinnai Split Solar Hot Water Systems
• Operation / Installation Manual Rinnai Close Coupled Solar Hot Water Systems
• Operation / Installation Manual Rinnai Evacuated Tube Split Solar Hot Water Systems
These publications are supplied separately with your solar hot water system and should have been handed to the
end user by the system Installer. If a copy of either of these publications is required please contact Rinnai.
WARNINGS & IMPORTANT INFORMATION

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IMPORTANT
Rinnai continuous ow Solar models S26i, S28i and S32 are specically designed for installation
as gas boosters in Rinnai Solar Hot Water Systems. They are not suitable for use in any other
applications.
The Installation, Commissioning, Maintenance and Service information for Rinnai Solar hot water systems and
components including the gas booster is detailed in the following Rinnai publications:
• Operation / Installation Manual Rinnai Split Solar Hot Water Systems
• Operation / Installation Manual Rinnai Close Coupled Solar Hot Water Systems
• Operation / Installation Manual Rinnai Evacuated Tube Split Solar Hot Water Systems
These publications are supplied separately with your solar hot water system and should have been handed to the
end user by the system Installer. If a copy of either of these publications is required please contact Rinnai.
Solar models S26i, S28i and S32 are factory pre-set and sealed to a delivery temperature of 70°C to meet regulator
requirements. This setting cannot be altered. Local regulations and/or the requirements of AS/NZS 3500 must
be considered regarding the temperature limitations to areas primarily used for personal hygiene. Temperature
limiting devices may be required. Refer to the above-mentioned Rinnai publications for more information.
A pouch behind the front cover of continuous ow models contains gas pressure setting and diagnostics information
and a wiring diagram these appliances. This information must be read in conjunction with the relevant solar system
Operation / Installation manual. This gas pressure setting and diagnostics information is usually not required
during installation.
IMPORTANT
Installation, Commissioning, Maintenance and Service by an Authorised person only. DO NOT
attempt to install any solar hot water system components (including the gas booster) without
rst studying the relevant Rinnai publications.
IMPORTANT
S28i (REU-VCM2837FF) (70) has an integrated control module. This control module includes
UP / DOWN buttons, ON / OFF button, Priority Button and LED Digital Display. Solar models are
pre-set and sealed to a delivery temperature of 70°C. The water temperature cannot be adjusted
using UP / DOWN Buttons.
OTHER ACCESSORIES
Use of a Recess Box permits the recessed installation of a Rinnai S32 gas booster into a wall cavity, while saving
precious space they are also suitable for painting. Available in either plastic (Smart Box) or metal.
Conceal the pipes and valves of the Rinnai S32 gas booster with easily attached Pipe Covers. These pipe covers
may also be joined to one another to conceal longer pipe work runs.
Protect the Rinnai S32 gas booster from theft and damage with a Security Cage.
Secure the Rinnai S26i, S28i and S32 gas booster from theft with a custom designed Security Bracket.
Pre-heat your hot water to reduce hot water delivery times and water wastage with a Smartstart pre-heat system.
Contact Rinnai for more information about our accessory range and model suitability, or visit: www.rinnai.com.au.
INSTALLATION, COMMISSIONING

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NOTES

Rinnai Australia Pty Ltd
ABN 74 005 138 769 | AU45204
100 Atlantic Drive, Keysborough, Victoria 3173
P.O. Box 460, Braeside, Victoria 3195
Tel: [phone]
Fax: [phone]
National Help Line
Tel: [phone]* Fax: [phone]
Monday to Friday, 8.00 am to 5.00 pm EST.
After Hours Hot Water Service Line
Tel: [phone]*
*Cost of a local call higher from mobile or public phones.
For further information visit www.rinnai.com.au
or email [e-mail]
Rinnai has a Service and Spare Parts network with
personnel who are fully trained and equipped to give
the best service on your Rinnai appliance. If your
appliance requires service, please call our National
Help Line. Rinnai recommends that this appliance be
serviced every 3 years.
With our policy of continuous improvement, we
reserve the right to change, or discontinue at any time,
specifications or designs without notice.
8 HW_CF_SOLAR OIM Issue 3 Workshop - October 2021