Rinnai Mains Pressure Cylinder Instructions for use

Mains pressure indoor stainless steel cylinders
Owner and installer guide

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.
Not suitable as a spa or swimming pool heater.
-Owner, please retain this guide for future reference
-Installer, please leave this guide with the owner
Warning
Improper installation, adjustment, alteration, service and maintenance
can cause property damage, personal injury or loss of life.
This 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: [email protected]
Web: rinnai.co.nz
youtube.com/rinnainz
facebook.com/rinnainz

About your cylinder...............................................4
Maintenance and servicing...................................4
Troubleshooting....................................................6
Installation
Specication summary .........................................8
Dimensions...........................................................9
Plumbing setup.....................................................10
Storage and delivery temperatures ......................11
Water quality.........................................................12
Electrical supply and connections ........................13
Valves and ttings.................................................14
Commissioning.....................................................14
Limited Warranty ..................................................15
Warranty examples in the real-world ....................18
Proof of purchase .................................................19
Installer details......................................................19
Contents

4 | MP indoor stainless steel cylinders: Owner and installer guide: 20132-I 09-20
About your cylinder
Safety messages
• Element cover
Do not remove the
element cover as this will
expose 230 V wiring and
must only be removed by
an authorised person.
• Thermostat setting
Must only be adjusted
by an electrician or
other suitably qualied
tradesperson.
• 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.
Safety devices
Your cylinder is tted with a:
• Temperature & Pressure
and Relief (TPR) valve,
designed to automatically
release water in the
event that temperature
or pressure exceeds safe
levels.
• Automatic thermostat
to maintain water
temperature.
• Temperature override
cutout for heating element.
In the case of a standard
cylinder (not installed in
a solar application), 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 qualied person.
Do not operate the system
unless all the safety devices
are tted and are in working
order. It is also important that
you do not tamper or remove
any of these devices.
Cylinder thermostat setting
To meet the New Zealand
Building Code requirement1to
disinfect water for legionella
bacteria2, the thermostat has
been set to 65 °C.
Turning the cylinder on/o󰀨
If you plan to be away for a
few nights we suggest you
leave the system switched on.
If it is necessary to switch it
o󰀨, when switching back on,
remember that the cylinder
will take time to heat back up
again.
Draining and lling the
system
This normally occurs during
installation or servicing and
must be carried out by an
authorised person.
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
warranty.
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.
1Clause 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
Water is heated by an electric element, or elements located in the cylinder. The temperature of the
water is controlled by an automatic thermostat that is set by your installer, usually to 65 °C.

MP indoor stainless steel cylinders: Owner and installer guide: 20132-I 09-20 | 5
Maintenance and servicing
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) operate the easing gear
Year ve Inspection and service the entire hot water system, including element*
Every 24 months after
year ve
Inspection and service the entire hot water system, including element*
* In hard water areas the element(s) must be periodically descaled. To do this the cylinder must be drained and the
element(s) 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 easing
gear at least once
every six months may
result in the water
heater exploding.
Continuous leakage
of water from the
valve may indicate a
problem.
It is important that you raise
and lower the easing gear
gently. During 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.
During servicing of
your cylinder the
TPR valve needs to
be checked and/or
replaced. This needs
to be done by an
authorised person at
intervals not exceeding
ve years, or more
frequently in areas
where the water is
classied as hard.
A TPR valve must not be
replaced with one that has a
higher pressure rating than
that specied for the cylinder.
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
is not covered by the Rinnai
warranty.
For help locating a service
person in your area call 0800
RINNAI (0800 746 624).
Lift until water flows
from the drain line,
lower gently
To
water
heater
To drain line
How to operate the easing gearTPR position - top
of cylinder
Insulated TPR valve for the
250 and 300 L cylinders
WARNING
IMPORTANT