Rinnai Infi nity Solar 20 Specification sheet

1
Rinnai New Zealand Infinity Solar 20 & 24 Op / Install: 02-08
Operation and Installation Manual
Solar Infinity 20 & 24
RINNAI
This appliance shall be installed in accordance with:
Manufacturer’s Installation Instructions, please refer to generic Operation/
Installation manual also included with product
Current AS/NZS 3000, AS/NZS 3500 & NZS 5261
Local Regulations and Municipal Building Codes
This appliance must be installed, serviced and removed by an Authorised Person.
•
•
•
Continuous Flow Water Heaters used in Solar Hot
Water Systems
Model Code Name
REU-VE2015WS Infinity Solar 20
REU-V2422WS Infinity Solar 24

2
Rinnai New Zealand Infinity Solar 20 & 24 Op / Install: 02-08
Regulatory Information
This appliance must be installed correctly by an authorised person. The installation of gas,
water, and electricity must conform to local regulations.
Your Rinnai Continuous Flow water heater meets the requirements of the NZS 5262 Gas
Appliance Safety. A declaration to this effect is on the ESS website, www.ess.govt.nz.
The installation must also comply with the instructions supplied by Rinnai.
Warning About Hot Water
This appliance produces very hot water at 75oC and is not suitable for use
with remote controllers. The household hot water supply MUST be protected
by a suitable tempering valve.
ALWAYS...
Test the temperature of the water with your elbow before placing your
child in the bath, also carefully feel the water before bathing or showering
yourself.
Supervise children whenever they are in the bathroom.
Make sure the tap is turned off tightly.
CONSIDER...
Installing child proof tap covers or child resistant taps (both approaches will prevent a small
hand being able to turn on the tap).
NEVER...
Leave a toddler in the care of another child. They may not understand the need to have the
water temperature set at a safe level.

3
Rinnai New Zealand Infinity Solar 20 & 24 Op / Install: 02-08
Applications
Rinnai continuous flow models REU-VE2015WS (Infinity Solar 20) and REU-
V2422WS (Infinity Solar 24) are suitable only for installation as gas boosters
in domestic solar hot water systems (see picture below). These models are not
suitable for use as ‘stand alone’ appliances for the purposes of supplying hot
water. These models produce water at higher than normal temperatures and
must be connected to the hot water supply by use of a suitable tempering valve.
Not suitable for use with remote controllers .
Important
For non solar hot water applications Rinnai have a dedicated range of continuous flow water
heaters available. Contact Rinnai for more details.
Legionella Disinfection
While any Rinnai Infinity can be used in solar applications, we strongly recommend the use
of a water heater set to 75oC. Water is then tempered back to 55oC before use. Please see
the drawing above. This is particularly important where the installation is for older or infirm
persons, or, it is in a holiday home or other dwelling not constantly occupied.
During winter months, when the heating from the solar collector is not sufficient to raise the
water temperature in the storage cylinder above 60oC for any length of time, there is potential
for the water in the storage cylinder to be set at a temperature which theoretically can be an
ideal environment for Legionella growth.
Should the water in the cylinder be below 60oC, heating it to 75oC in the Infinity will effectively
disinfect the water. The temperature needs to be this high because the water only remains at
this temperature for a relatively short time.
If the water comes from the cylinder at more than 60oC, it is assumed that it has been at this
temperature for a sufficiently long time to disinfect the water. In this case the automatic flow
diversion valve will cause the water to bypass the Infinity saving energy.

4
Rinnai New Zealand Infinity Solar 20 & 24 Op / Install: 02-08
Features and Benefits
The Rinnai Infinity Solar continuous flow water heaters provide hot water even during
times of limited solar radiation and/or high hot water demand. Whilst the electricity, water
and gas supply are connected, hot water is available whenever hot water taps are open.
The Rinnai Solar range of continuous flow water heaters are power flued appliances. This
makes them compact saving both floor and wall space.
The temperature of hot water output from the Rinnai Infinity is CONSTANTLY MONITORED
by a built-in sensor. If the temperature of the hot water output from the Rinnai Infinity
rises to more than 3oC above the preset temperature the burner is switched OFF and then
switched ON again when the temperature falls below the selected temperature.
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.
•
•
•
•
•
Important Information
Always check the water
temperature carefully before
use. Refer to the Warning
about Hot Water on page 1 of
this manual for important safety
information.
At low water flows, the hot
water unit may extinguish
without warning. Opening the
tap further will restart the
appliance.
Do Not touch the unit cover or the
flue outlet.
Do Not insert objects into the flue
outlet.
On colder days steam may discharge
from the flue outlet. This condition is
normal for high efficiency appliances
and does not indicate a fault.
Keep flammable materials,
spray cans, fuel containers, pool
chemicals, trees, shrubs, etc.
well clear of the flue outlet.
Do Not spray water directly into
the flue terminal.
If freezing conditions are
expected, ensure the electric
power supply to the solar gas
booster remains ON. This will
ensure the automatic anti-
frost protection can operate
when required (LPG models
only).

5
Rinnai New Zealand Infinity Solar 20 & 24 Op / Install: 02-08
Warranty Statement - Hot Water Products
Extended Warranty for Rinnai Solar Infinity Heat Exchanger
The parts warranty on heat exchangers in Rinnai Solar Infinity installed for domestic use is 10
years pro rata (i.e. in the 4th year, 70% of the value of the part is covered by the warranty
and 40% of the value of the part is covered by warranty in the 7th year).
For Rinnai Solar Infinity units installed for commercial use the parts warranty for the heat
exchanger is 5 years pro rata (i.e. in the 4th year, 40% of the value of the part is covered by
the warranty and 20% of the value of the part is covered by the warranty in the 5th year).
This warranty is subject to Terms and Conditions below.
All other parts and labour for the Rinnai Solar Infinity are covered for 3 years in accordance
with the Terms and Conditions below.
Rinnai Solar Infinity is under warranty for solar installations only. If used for any other purpose
the warranty is void.
Rinnai Solar Infinity Warranty - Terms and Conditions
During the warranty period and subject to clauses 2 and 3 below, Rinnai will, at its own
discretion, either replace or repair any defective product at no charge to the customer.
This warranty covers manufacturing defects only. This warranty will not apply (for example)
if the Rinnai Solar Infinity has been improperly installed or is otherwise installed contrary
to manufacturer’s recommendations, has been damaged during or after installation, or has
been subjected to damage or abuse beyond that expected from conditions of normal use.
Warranty claims may be invalid if not accompanied by details of the installing or
supervising gas fitters registration number and the gas fitting certification number.
This warranty commences from the date of installation. Proof of purchase is required at the
time of the warranty claim.
Servicing of the Rinnai Solar Infinity is to be carried out by a Rinnai authorised service
centre.
Water Quality for Rinnai Solar Infinity
Water quality outside the maximum recommended limits (as set down below) will void this
warranty. Water quality tests must be carried out at the customer’s own cost but Rinnai will
reimburse any reasonable test costs of the product is found to be defective.
Water chemistry and impurity limits are detailed in the table below. Most metropolitan water
supplies fall within these requirements. If you are unsure about water quality, contact your
water authority. If sludge or foreign matter is present in the water supply, a suitable filter
should be incorporated in the water supply.
TDS (Total
Dissolved Solids) Total Hardness CaCO3
Alkalinity
(as CaCO3)Dissolved
(free) CO2
pH Chlorides Magnesium Sodium Iron
Up to 600mg/litre
or ppm Up to 200mg/litre or ppm Up to 200mg/litre
or ppm
Up to 25mg/
litre or ppm 6.5 to 8.5 Up to 300mg/ litre or ppm Up to 10mg/ litre or ppm Up to 150mg/litre
or ppm
Up to
1mg/litre or
ppm
Some examples of water quality issues where the water may need to be treated:
Hard water (Wanganui)
Acidic water (some areas of Christchurch)
Both hard and acidic water (some bore water)
1.
2.
3.
4.
5.
•
•
•

6
Rinnai New Zealand Infinity Solar 20 & 24 Op / Install: 02-08
Installation, Commissioning & Maintenance
Rinnai continuous flow models REU-VE2015WS (Infinity Solar 20) and REU-
V2422WS (Infinity Solar 24) are specifically designed for installation as gas
boosters in solar hot water systems. They are not suitable for use in any other
applications.
Important
Models REU-VE2015WS and REU-V2422WS are factory preset to deliver 75oC. This
temperature must not be altered. Local regulations and/or the requirements of the AS/NZS
3500.4 must be considered regarding the temperature limitations to areas primarily used for
personal hygiene. Refer to the above mentioned publications for more information.
A pouch behind the front cover of the continuous flow models REU-VE2015WS and REU-
V2422WS contains gas pressure setting and diagnostics information for these appliances. This
information must be read in conjunction with the relevant solar system Installation / Operation
manual. This gas pressure setting and diagnostics information is usually not required during
installation.
Installation, commissioning, service and maintenance by an authorised person
only.
Do not attempt to install any solar hot water system components (including
the gas booster) without first studying the relevant Rinnai and regulatory
publications.
Important

7
Rinnai New Zealand Infinity Solar 20 & 24 Op / Install: 02-08
Accessories
Recess Box
When installing a Rinnai Infinity continuous flow hot water heater in a new home or renovation,
it is a great idea to allow for a recess box to be included at the construction stage. These boxes
allow you to literally recess the appliance into the cavity of the wall saving precious space. In
addition they virtually hide your hot water system altogether.
All boxes and covers are suitable for painting to blend in with the exterior of your home.
Pipe Cover
Pipe covers are recommended as the finishing touch to a Rinnai Infinity continuous flow hot
water heater installation. Basically the covers are designed to hide the plumbing pipework and
valves. These are particularly popular in installations where the unit is permanently visible to
the occupants of the house. The cover can be easily attached to the appliance and two pipe
covers can be joined together for longer pipework if necessary.
Security Bracket
Prevent theft by securing your Rinnai continuous flow hot water heater with our custom
security bracket, easily installed it covers the lower mounting bracket of the appliance to
create a tamper proof installation.
Sideways Flue Diverter
Designed to redirect flue products when the water heater is installed on a balcony, this product
is available for selected models only.
Contact Rinnai for further information about our accessory range and model suitability details.

8
Rinnai New Zealand Infinity Solar 20 & 24 Op / Install: 02-08
Customer Contacts
Solar Infinity 20 & 24
RINNAI
For more information about buying, living and servicing of Rinnai appliances call:
Consumers 0800 RINNAI (0800 746 624)
Installers 0800 TO RINNAI (0800 86 746 624)
•
•
Rinnai New Zealand Limited
105 Pavillion Drive
Airport Oaks PO Box 53177
Mangere Airport Retail Centre
Manukau Manukau 2150
Phone: [phone]
Fax: [phone]
Email: [email protected]
Website: www.rinnai.co.nz
All Rinnai appliances meet or exceed the safety standards required by New Zealand gas and
electrical requirements.
Rinnai is constantly improving its products and as such specifications are subject to change or