Rinnai MC502S Operation & Installation Manual

Operation / Installation Manual

Wireles s

On/Off

Entry

Tran sf erOn /Off

This manual applies to the Rinnai Wireless
Cont roller MC502S.

This manual must be used in conjunction with the
Rinnai Water Heater Oper ation / Install ation Manu al
su pplied with Rinnai water heat ers.

MC502S Wirel ess Cont roller s are compatible only
with the Rinnai w ater heater and other remote
controller models shown.

Refertothetableon page2ofthismanualto
confirm the maximum number and combination of
controllers that can be fitted t o your Rinnai water
heater model.

For infor mation regarding compatibility with other
Rinnai water heater and water controller model s
contact Rinnai.

Controller

Model: MC502S

Compatible Rinnai water heater models:

Infinity XR 32
Infinity XR 26
Infinity XR 24

Infinity XR 20
Infinity XR 18
Infinity XR 16
Infinity XR 26i
Infinity XRPlus 26
Infinity XRPlus 20
HD200
HD200i
HD250
HD250i

Compatible Rinnai wired remote controller

Uni ver sal MC-91
Deluxe Kitchen MC-70V
Deluxe Bathroom BC-70V

This wireless water controller and transceiver
mus t be installed in accordanc e with the
manufacturer ’s Installation Instructions.

Rinnai NZ

Radio Spectrum

Supplier Code: Z822

OPERATION MANUAL

IMPORTANT INFORMATION .....................................................................................1

INSTALLATION AND SERVICING............................................................................................... 1

A WARNING ABOUT HOT WATER ............................................................................................. 1

RADIO COMMUNICATIONS ........................................................................................................ 1

GENERAL WATER CONTROLLER INFORMATION .................................................2

USING WIRELESS CONTROLLERS..........................................................................3

ABOUT THE WIRELESS CONTROLLER .................................................................................... 3

HOW TO USE WIRELESS CONTROLLERS ............................................................................... 3

TURNING ON THE WIRELESS CONTROLLER.......................................................................... 3

ADJUSTING TEMPERATURE ..................................................................................................... 3

TRANSFERRING PRIORITY BETWEEN CONTROLLERS......................................................... 4

WIRELESS CONTROLLERS BATTERIES .................................................................................. 4

TROUBLESHOOTING.................................................................................................5

ERROR CODES ........................................................................................................................... 5

SERVICE ...................................................................................................................................... 5

INSTALLATION MANUAL ..........................................................................................6

CONTACT INFORMATION .......................................................................................16

Rinnai New Zealand i Operation Manual

IMPORTANT INFORMATION

INSTALLATION AND SERVICING

Rinnai Wireless Transceivers can be connected to the water heater models listed on the cover page
by the end user in accordance with these Instructions. A qualified tradesperson is not required.

Rinnai Wireless Transceivers are also compatible with some older water heater models not listed on
the cover page of these Instructions. In this case they must be installed and commissioned by a
suitably qualified trades person. Contact Rinnai for information regarding compatibility with older
water heaters.

Regardless of water controller or transceiver installation, all Rinnai water heaters must only be
installed by an Authorised person.

Water controllers, transceivers and water heaters do not contain user serviceable parts and must only
be serviced and repaired by an authorised person.

Keep this manual in a safe place for future reference.

All dimensions referred to in this manual are in millimetres, unless otherwise specified.

A WARNING ABOUT HOT WATER

Excessively hot water is dangerous, especially for young
children and the infirm. Rinnai water controllers allow you to
control the temperature of hot water to safe levels.

High water temperatures can cause severe burns. Those most
at risk are children, disabled, elderly and the infirm.

ALWAYS......

Test the temperature of the water with your elbow before placing
your child in the bath, also carefully feel water before bathing or
showering yourself.

Supervise children whenever they are in the bathroom.

Make sure that the hot water 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.

RADIO COMMUNICATIONS

Rinnai wireless controllers are classified as short range radio communications devices and referred
to as Low Interference Potential Devices (LIPD’s) in AS/NZS 4268:2003*. As such, they operate in the
same radio frequency spectrum as many other devices classified as LIPD’s such as garage door
openers and keyless automobile entry systems. Although interference with other LIPD's is unlikely, it
is not guaranteed interference will not occur.

Rinnai wireless controllers must not be used in the vicinity of other devices if radio interference with
such devices could result in a dangerous situation, unless it is verified that interference will not occur.
Possible examples are medical devices and fire alarms.

*AS/NZS 4268:2003 ‘Radio Equipment and systems – short range devices – Limits and methods of
measurement’.

Rinnai New Zealand 1 Operation Manual

GENERAL WATER CONTROLLER INFORMATION

Water controllers allow precise temperature control by the user. When used correctly, the hot water
unit will deliver the selected temperature, even when the water flow is varied, or more than one tap is
in use. Each remote controller can be individually programmed, however the water heater can only
deliver one set temperature at any time. The available temperatures (°C) are as follows:

Master Controller:

37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 48, 50, 55°C* (60, 65°C HD models only)

Bathroom Controller:

Hot Water Delivery: 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 48, 50°C

Whilst hot water outlets are open the set temperature may be lowered. However the set temperature
cannot then be raised above 43°C. In addition transfer of 'priority' between controllers is not possible.
These are safety features.

Suggested temperatures are:

Kitchen 50°C ~ 55°C*, Shower 37°C ~ 43°C

* Temperature may not be available on all installations. Rinnai water heaters can be programmed to deliver higher temperatures
via the kitchen controller. Contact Rinnai for more details.

These temperatures are suggestions only. You may find higher or lower temperatures more
comfortable. Maintaining lower temperatures helps save energy. To obtain water temperatures lower
than 37°C simply add cold water.

The temperature of outgoing hot water is constantly monitored by a built-in sensor. If the temperature
of the outgoing hot water rises to more than 3°C above the selected temperature shown on the digital
monitor, the burner will automatically go out. The ‘In Use’ indicator will also go out. The burner will
ignite again once the outgoing hot water temperature falls to that shown on the digital monitor.

Wireless controllers can be fitted along with wired 'Compact' and 'Deluxe' water controllers. Wireless
and Compact water controllers allow temperature selection only. Deluxe water controllers allow
temperature selection, shower saver / bath fill and have a clock function.

Wireless (MC502S), Universal (MC-91) and Deluxe (MC-70V & BC-70V) Controllers - available
configurations:

A maximum of 4 wireless water controllers can be fitted with the following

Wireless Only

Installations.

Wired & Wireless

Installations.

limitation:

Only ONE

A maximum of 4 water controllers can be fitted. Any combination of deluxe,
universal and wireless controllers can be used with the following
limitations:

Only ONE
(when programmed as a master controller) or a MC502S water controller.

Up to TWO

MC502S can be set as the Master Controller.

master controller can be installed. This can be a MC-70V, a MC-91

BC-70V water controllers can be installed.

The FOURTH
MC-91.

Rinnai New Zealand 2 Operation Manual

water controller in any installation MUST BE a MC502S or a

USING WIRELESS CONTROLLERS

ABOUT THE WIRELESS CONTROLLER

HOW TO USE WIRELESS CONTROLLERS

TURNING ON THE WIRELESS CONTROLLER

When the controller is switched off only the battery status and
communications indicators are displayed on the digital monitor.
To turn on the controller, press the On/Off button once. The
communications indicator will briefly illuminate to confirm that a
signal has been sent to the transceiver connected to the water heater.

The Transfer indicator and the digits of the Water Temperature
indicator will illuminate to indicate that the water heater is ready to supply
hot water once a hot water tap is opened.

ADJUSTING TEMPERATURE

Simply press the 'hot water temp' or buttons until the required
temperature is displayed on the digital monitor.

To operate the water heater, open any hot water tap. This will
automatically light the burner, providing hot water. The ‘In Use’ indicator

will illuminate on the water controller.

Once the hot water is running, if the set temperature is either too hot or
cold press the or buttons until the desired temperature is
reached.

ON!ON!

HOTHOT

Tran sf erOn / Off

COLDCOLD

CHECK WATER TEMPERATURE BEFORE USE.

CAUTION

A parent or carer should always check the temperature before a child is placed in
contact with hot water, see page 1.

Whilst hot water outlets are open the set temperature may be lowered. However it
cannot then be raised above 43°C. This is a safety feature.

NOTE

Rinnai New Zealand 3 Operation Manual

USING WIRELESS CONTROLLERS

TRANSFERRING PRIORITY BETWEEN CONTROLLERS

To control the water delivery temperatures when using two or more
controllers it is necessary to have priority transferred to the water
controller you wish to use.

An illuminated Transfer indicator confirms that the desired
water controller is in control of the water delivery temperature. If the
Transfer indicator is not illuminated press the ‘Transfer’
button to transfer priority to the desired water controller.

The Transfer indicator on the water controller will now
illuminate indicating that control of the water delivery temperature has
been transferred and that the water heater is ready to supply hot water
once a hot water tap is opened.

Whilst hot water outlets are open transfer of 'priority' between controllers is not
possible. This is a safety feature.

NOTE

TEMPERATURE DISPLAY RESPONSE TIME

When the temperature setting is changed on a particular wireless controller, there may
be a delay of up to 15 seconds before other controllers display the new temperature.
This is due to the wireless radio communications and not a malfunction.

HOT WATER CONTROL

Tran sf erOn / Off

Temperatures higher than 50°C should only be able to be selected on the controller
used for the kitchen, not on controllers used in bathrooms, ensuites or toilets. This
helps minimise the risk of burns. The wireless transceiver has been incorrectly
assigned if temperatures in excess of 50°C are able to be selected on controllers used
in bathrooms, toilets and laundries. Re-assign the wireless transceiver if this is the
case. See “UN-ASSIGNING AND RESETTING WIRELESS CONTROLLERS” on page 12
and “INSTALLING WIRELESS WATER CONTROLLERS” on page 11

WIRELESS CONTROLLERS BATTERIES

Wireless water controllers use 4 x 1.5V AA
batteries. The battery symbol in the display monitor
indicates the remaining charge in one of three levels.

To replace the batteries:

1. Remove the controller from its’ wall mounting bracket.

2. Using a coin or a suitable screw driver open the battery compartment with a ¼ anti-clockwise turn
of both locks.

3. Insert the batteries observing the correct polarity as shown on the rear of the controller.

4. Using a coin or a suitable screw driver close the battery compartment with a ¼ clockwise turn of
both locks.

5. Return the controller to its’ wall mounting bracket.

Use only 4 x 1.5V AA ALKALINE batteries. NEVER mix old and new batteries.

IMPORTANT

Battery life is approximately 1 year.

Remove batteries if the remote control is not going to be used for a long period. This
will help avoid damage from leaking batteries.

Rinnai New Zealand 4 Operation Manual