Rinnai Smart Cylinders Series, Smart Cylinders MS13555030S, Smart Cylinders MS18055030S, Smart Cylinders MS25055030S Owner And Installer Manual

Owner and installer guide

Rinnai Smart Cylinders™

Mains pressure

Models: MS13555030S, MS18055030S, MS25055030S

indoor stainless steel

Installer

Please leave this guide with the home owner as it contains important safety and
warranty information.

Important:

Cylinders shall be installed in accordance with:

- Manufacturer’s installation instructions

- Current AS/NZS 3000, AS/NZS 3500, and G12/AS1

Installation, servicing and repair shall be carried out only
by authorised personnel.

Owner, please retain this guide for future reference.
Installer, please leave this guide with the owner.

Warning
Improper installation, adjustment, alteration, service or
maintenance can cause property damage, personal injury
or loss of life.

The appliance is not to be used 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.

For more information about buying, using, and servicing
of Rinnai appliances call: 0800 RINNAI (0800 746 624)

Rinnai New Zealand Limited
105 Pavilion Drive, Mangere, Auckland
PO Box 53177, Auckland Airport, Auckland 2150

Phone: [phone]
Fax: [phone]
Email: [e-mail]
Web: www.rinnai.co.nz
www.youtube.com/rinnainz
www.facebook.com/rinnainz

cnt:

About your Rinnai Smart Cylinder ................... 4

Maintenance and servicing

Troubleshooting .............................................. 8

Installation

Specification summary .................................... 12

Dimensions ...................................................... 13

Plumbing setup ............................................... 14

Storage and delivery temperatures ................. 15

Water quality ................................................... 16

Electrical supply and connections ................... 17

Valves and fittings ........................................... 18

Commissioning ............................................... 18

10 Year Limited warranty ................................. 19

Warranty examples in the real-world .............. 22

...............................

7

Proof of purchase ............................................ 23

Installer details ................................................ 23

About your Rinnai Smart Cylinder™

Your Rinnai Smart Cylinder learns the typical hot water use in the home and then
heats the water to suit the anticipated demand. Energy is saved as water is not fully
heated when you don't need it.

Your Rinnai Smart Cylinder comes factory preset to operate in automatic mode, at a level setting
of three. We recommend staying with this setting to achieve a balance between running cost
savings and ensuring you have enough hot water.

The mode button enables selection with the + and - buttons to switch between:

iQ automatic mode

Permanently monitors and learns hot water usage habits. After a minimum of one
week it will automatically adjust the cylinder heating times according to your hot water
usage pattern. A certain amount of hot water is guaranteed at all times depending on
the level you select.

Manual mode

Permanently maintains the total volume of water at a temperature according to the
selected level—operates just like a traditional electric storage cylinder.

Vacation mode

Keeps the water in the cylinder at a minimum temperature (6 °C) and prevents the
water freezing in colder areas.

Child lock indicator

Screen is able to be locked to avoid settings being changed. To lock and unlock press
the mode and - buttons at the same time and hold for three seconds.

Maintenance/error indicator

Error codes are indicated by the maintenance logo, a flashing background light, and
the error code number.

Vacation days and error code

Displays either the number of vacation days (if set) or error code.

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iQ automatic mode

This is the preset
default mode for your

Rinnai Smart Cylinder.
In this mode the level
indicator displays an estimate
of the amount of hot water
available in the tank. The level
is monitored and updated in
real-time.

There are five different
settings available. Your Rinnai
Smart Cylinder has been
preset to operate on level
three which will achieve a
balance between energy
savings and ensuring you
have enough hot water
available.

Level Comfort

level

1 -- +++

2 - ++

default setting

3 + +

4 ++ -

5 +++ --

Changing the level setting

Press the + or - buttons and
select the level you require—
if you don't press any button
for three seconds the system
will set the level change.
The system will then default
to showing the estimated
amount of hot water in the
cylinder again.

Energy

saving

level

Manual mode

In manual mode the
control regulates the

water temperature
in the cylinder to a preset
level. The temperature level
is selected by using the +
or - buttons, there are five
different settings available.

Level Approx. water

temp. in
cylinder

1 50 °C

2 55 °C

3 60 °C

4 65 °C

5 70 °C

Biosafe operation

To meet the New Zealand
Building Code requirement1
to disinfect water for
legionella bacteria2, the
system will perform heating
above 60 °C whenever risk
conditions (<60 °C for 21 days)
are detected.

Vacation mode

If you are going away
switch the cylinder

to vacation mode. In
vacation mode the cylinder
will be set to maintain
the water at a minimum
temperature of 6 °C to prevent
the water from freezing.

To select press the mode
button until the suitcase
icon appears. By default the
number of vacation days is
undefined (--). If no period is
selected the cylinder will stay
in vacation mode until the
mode is manually changed.

The number of days
(maximum 99) can be
specified by using the + or ­buttons. A long press of the
buttons will perform a fast
speed day selection. After the
specified period, the cylinder
will automatically go back to
the operating mode that was
selected before vacation was
set.

Vacation can be cancelled
by pressing the iQ or manual
mode buttons.

Warmup indicator

A slow blinking of the shower
symbol indicates when the
element is heating the water
(occurs in automatic and
manual modes).

1

Clause G12.3.9, Acceptable Solution G12/AS1 6.14.3

2

Legionella is a bacterium that can cause Legionnaires’ diseasea severe form of pneumonia

Rinnai Smart Cylinder MP indoor stainless steel: Owner & installer guide: 20430-C 03-17 | 5

Important

All cylinders have the potential to leak water. To minimise damage to other areas of your home, ensure that your
cylinder has been installed with a drip tray—the person doing the installation is responsible for this.

* Refer to the warranty terms and conditions in this guide for more information.

Safety messages

• Element cover
Do not remove the
element cover, this will
expose 230 V wiring, it
must only be removed by
an authorised person.

• Damaged components
If any component is
damaged, it must be
replaced by an authorised
person using Rinnai
replacement parts.

• Child supervision

Children should be
supervised to ensure they
do not play with any part
of the hot water system.

• Hot pipe work

Care should be taken not
to touch the pipe work
from the cylinder as this
could be very hot.

• Temperature override
cutout for heating
element.

The operation of the
thermal cutout can
indicate a dangerous
situation. Do not reset
the thermal cutout until
the water heater has been
serviced by a qualified
person.

Do not operate the system
unless all the safety devices
are fitted and are in working
order. It is also important that
you do not tamper or remove
any of these devices.

Draining and filling the
system

This normally occurs during
installation or servicing and
must be carried out by an
authorised person.

Turning the cylinder on/off
(we don't recommend this)

If you switch the

IMPORTANT

cylinder off for more
than 18 hours it will
lose all the water usage
history.

Safety devices

Your cylinder is fitted with a:

• Temperature & Pressure
Relief (TPR) valve that
ensures the water remains
at a safe pressure and
temperature.

Installation by a licensed
tradesperson

Only a licensed tradesperson
can install, adjust, maintain,
and service this water heater.
Any work carried out by a
non-licensed tradesperson
is illegal and will void any

• Automatic thermostat

warranty.
to maintain water
temperature.

6 | Rinnai Smart Cylinder MP indoor stainless steel: Owner & installer guide: 20430-C 03-17

Maintenance and servicing

IMPORTANT

Hot water systems, like cars, require regular maintenance and servicing.
To ensure longevity of your cylinder we recommend the following.

Period What needs to be done

Every six months TPR (temperature & pressure relief) valve—operate the easing gear

Year five Inspection and service of the entire hot water system, including the element*

Every 24 months
after year five

* In hard water areas the element(s) must be periodically descaled. To do this the unit must be drained and the element
removed.

TPR valve

This valve is located near the
top of the cylinder and is
essential for safe operation.
The TPR valve works by
automatically venting hot
water if the temperature or
pressure of the water in the
cylinder gets too high.

Every six months operate the
easing gear to remove lime
deposits and to check that
it is not blocked. As this will
discharge hot water, ensure
no one is near the drain line.

Failure to operate
the relief valve

WARNING

easing gear at

least once every
six months may result in
the water heater exploding.

Inspection and service of the entire hot water system, including the element*

from the valve may indicate
a problem. It is important
that you raise and lower the
easing gear gently. During

A TPR valve must not be
replaced with one that has a
higher pressure rating than

that specified for the cylinder.
the operation, if the valve
does not discharge water
when the easing gear is
lifted, or does not seal again
when closed, arrange for an
authorised person to come
and inspect the system
immediately.

Maintenance and servicing

Rinnai has a maintenance,

service, and spare parts

network with personnel who

are fully trained and equipped

to give the best advice on

your Rinnai product. Regular

maintenance and servicing

During servicing of
your cylinder the

is not covered by the Rinnai

warranty.

TPR valve needs to
be checked and/or replaced.
This needs to be done by an
authorised person at intervals

For help locating a service
person in your area call 0800

RINNAI (0800 746 624).
not exceeding five years,
or more frequently in areas
where the water is classified
as hard.

Continuous leakage of water

top of cylinder

How to operate the easing gearTPR position -

To
water
heater

Insulated TPR valves will
look like the image below

Lift until water flows
from the drain line,
lower gently

To drain line

Rinnai Smart Cylinder MP indoor stainless steel: Owner & installer guide: 20430-C 03-17 | 7

Troubleshooting

Do not attempt to carry out any work other than that mentioned in this
troubleshooting section. If you have any other faults or problems, please contact
your installer, or contact Rinnai.

Problem Recommended action

Error code is
flashing on the
controller

No display on the
controller, but
power is on and
you have hot water

Nothing happens
when the buttons
are pressed

I have cold
water while in iQ
automatic mode

Error codes are indicated by the maintenance logo, a flashing
background light, and the error code number.

Take a note of the error code and phone Rinnai Customer Services
(0800 746 624) for advice on whether a plumber or electrician is
required.

Call Rinnai Customer Services (0800 746 624).

Check if the child lock is set. Unlock by pressing the mode and ­buttons at the same time for more than three seconds.

A sudden significant increase of hot water consumption may
generate occasional cold water. Change to manual mode and select
the desired temperature level and then go back to iQ mode.

If this occurs regularly, increase the level in iQ mode or occasionally
go into manual mode.

Lack of hot water
or no hot water

Is there electricity supply to the cylinder?

Check that the isolating switch marked ‘hot water’ or ‘water heater’,
at the meter box, is switched on. Also check any isolating switches
near the water heater are switched on.

Check the fuse or circuit breaker marked ‘hot water’ or ‘water
heater’ at the meter box. Repeated failure of the fuse or tripping of
the circuit breaker indicates a fault, which must be investigated by
an authorised tradesperson.

Most hot water cylinders are controlled at peak times by your
electricity supplier via a ripple relay. Contact your electricity supplier
to determine if there have been any issues with the power supply.

8 | Rinnai Smart Cylinder MP indoor stainless steel: Owner & installer guide: 20430-C 03-17