Rinnai WWC503 Installation and Operation Guide
Operation / Installation Manual
Wireless Water
Water Heater
On/Off
Entry
Controllers
MC
Temp. Volume
Max Temp. Maintenance
Controller
No. 1 No. 2 No. 3
Model: MC-503RC
This manual applies ONLY to the Rinnai MC-503RC
wireless water controllers and transceivers.
This manual does NOT
water controllers and transceivers.
This manual must be used in conjunction with the
Rinnai Water Heater Operation / Installation Manual
supplied with Rinnai water heaters.
MC-503RC water controllers are compatible ONLY
with Rinnai water heater and remote controller
models shown.
Refer to the table on page 2 of this manual to
confirm the maximum number and combination of
controllers that can be fitted to your Rinnai water
heater model.
For information regarding compatibility with other
Rinnai water heater and water controller models
contact Rinnai.
apply to MC-502RC wireless
Compatible Rinnai water heater models:
INFINITY 32 REU-VR3237WG
INFINITY 26 REU-VR2626WG
INFINITY 26 Plus REU-VRM2630WD
INFINITY 26i REU-VR2632FFUG
INFINITY 20 REU-VR2024WG
INFINITY 16 REU-VR1620WG
ENVIROSMART REU-KR2430WG
V1500 REU-VR2426WB
V1200 REU-VR1620WB
HD250e REU-VRM3237WC
HD200e REU-VRM2632WC
HD200i REU-VRM2632FFUC
Refer to the inside front cover for additional Rinnai continuous flow
Compatible Rinnai wired remote controller
Universal MC-91Q
Deluxe Kitchen MC-100V
Deluxe Bathroom BC-100V
NOT
remote controller and tranceivers.
water heater models covered by this manual.
compatible with Rinnai MC-502RC wireless
This wireless water controller and transceiver
must be installed in accordance with the
manufacturer’s Installation Instructions.
All Rinnai gas products
are A.G.A. certified.
Distributed and serviced in Australia under a Quality
System certified as complying with ISO 9001 by
SAI Global
SAI Global
NOTE
This manual applies to some additional Rinnai continuous flow water heater models
not listed on the front cover of this manual.
The following table lists these additional models and their equivalent in terms of
wireless controller operation.
Model not listed on the front cover Equivalent model listed on front cover
REU-V3237WG REU-VR3237WG
REU-V2626WG REU-VR2626WG
REU-VM2630WD REU-VRM2630WD
REU-V2632FFUG REU-VR2632FFUG
REU-V2024WG REU-VR2024WG
REU-V1620WG REU-VR1620WG
REU-K2430WG REU-KR2430WG
REU-V2426WB REU-VR2426WB
REU-V1620WB REU-VR1620WB
IMPORTANT
REU-V2024WE REU-VR2024WG
REU-VM3237WC REU-VRM3237WC
REU-VM2630WC REU-VR2626WG
REU-VM2632FFUC REU-VRM2632FFUC
Other Rinnai continuous flow water heater models that are not listed above are
therefore not covered by this manual.
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 WATER CONTROLLERS............................................................3
ABOUT THE WIRELESS WATER CONTROLLER (MC-503RC).................................................3
TURNING ON THE WATER HEATER. ........................................................................................3
ADJUSTING TEMPERATURE .................. ............................................................. .... ... ... ............3
TRANSFERRING PRIORITY BETWEEN WATER CONTROLLERS...........................................4
USING CHILD LOCK FUNCTION ................................................................................................4
WIRELESS WATER CONTROLLERS BATTERIES .................................................................... 5
SMARTSTART® PRE-HEAT OPERATION................................................................6
ABOUT THE SMARTSTART® PRE-HEAT SYSTEM .................................................................. 6
TROUBLESHOOTING.................................................................................................7
ERROR CODES........................................................................................................................... 7
SERVICE...................................................................................................................................... 7
INSTALLATION MANUAL ..........................................................................................8
CONTACT INFORMATION .......................................................................................17
Rinnai Australia 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.
Water temperatures above 50°C 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 bef ore 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).
Setting your appliance at a maximum temperature of 50°c
(contact Rinnai Australia).
NEVER….
Leave a toddler in the care of another child. they may not
understand the need to have the wat er t emp erature s et at a sa fe
level.
RADIO COMMUNICATIONS
Rinnai wireless water 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 water 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 Australia 1 Operation Manual
GENERAL WATER CONTROLLER INFORMATION
The MC-503RC Wireless water controller is a water resistant device, however
excessive exposure to water such as immersion may result in damage to the
NOTE
controller.
• DO NOT immerse the controller into water.
• AVOID direct exposure to water or steam as these conditions may cause a
malfunction.
• ALWAYS AVOID exposure to water when the battery compartment is open.
When cleaning your water controller use ONLY a damp cloth and a mild detergent.
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 ca n be individually programmed , however the water heat er can only
deliver one set temperature at any time. The available temperatures (°C) are as follows:
Master Controller (used in kitchen):
37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 48, 50, 55°C* (60, 65°C HD models only)
Bathroom Controller (used in bathrooms, ensuites, toilets and laundry):
Hot Water Delivery: 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 48, 50°C
Whilst hot water outlets are open the set temperatu re may be lowered. However the set temperature
cannot then be raised above 43°C. In additio n transfer of 'priority' between controll ers 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 sa ve ener gy. To o btain wa ter tem peratur es lowe r
than 37°C simply add cold water.
The temperature of outgoing hot water is constantly monitored by a built-in se nsor. If the temperature
of the outgoing hot water rises to more than 3°C above th e selected temperatur e shown on the d igital
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 water controllers can be fitted along with wired 'Universal' and 'Deluxe' water controllers.
Wireless and Universal water controllers allow temperature selection only. Deluxe water controllers
allow temperature selection, have a clock function and on the Deluxe Bathroom water controller BC100V a shower saver / bath fill function is also available.
Available configurations for Wireless and Wired Water Controllers :
A maximum of 4 wireless water controllers can be fitted with the
For Wireless Only
Installations
following limitation:
Only ONE
MC-503RC can be set as the Master Controller.
A maximum of 4 water controllers can be fitted. Any combination of
deluxe, universal and wireless controllers can be used with the following
limitations:
For Combination
Wired & Wireless
Installations
Only ONE
MC-91Q (when programmed as a master controller) or a MC-503RC water
controller. Note that when a MC-100V is fitted it will always function a s a
master controller, this is the default setting and can not be changed.
Up to TWO
The FOURTH
master controller can be installed. This can be a MC-100V, a
BC-100V water controllers can be installed.
water controller in any installation MUST BE a MC-503RC
or a MC-91Q.
Rinnai Australia 2 Operation Manual
USING WIRELESS WATER CONTROLLERS
ABOUT THE WIRELESS WATER CONTROLLER (MC-503RC)
COMMUNICATIONS STATUS
Signal strength indicator
Strong signal Weak signal
Outofrangeindicator
Communications indicator
WATER CONTROLLER
STATUS INDICATORS
This indicator illuminate s when the water
controller is in control of water delivery
temperature.
This indicator illuminates when the
Smartstart® preheater (when fitted) has
been activated.
This Child Lockindicatorilluminates when
the child lock has been activated.
WATER TEMPERATURE INDICATOR
Indicates the selected hot water temperature.
WATER TEMPERATURE
UP AND DOWN BUTTONS
These buttons are used to select the water
temperature.
BATTERY STATUS
Full battery indicator.
Low battery indicator.
Replace battery indicator, when flashing.
WATER HEATER 'In Use' INDICATOR
Indicates that the water heater is in operation
and delivering hot water.
ON/OFF BUTTON
Used to switch the water heater on and off.
.
TRANSFER BUTTON
Used to transfer control priority between the
water controllers. The controller wit h priority
has command of the hot water delivery
temperature.
PREHEAT BUTTON
Usedtostart and stopthe Smartstart® preheat
unit (when fitted).
See Smartstart® Operation on page 6.
CHILD LOCK BUTTON
Used to switch Child Lock function on and off.
TURNING ON THE WATER HEATER.
When the water heater is in the ‘Off’ condition only the communications
and battery status indicators are displayed on the digital monitor.
To turn the water heater ‘On’, press the On/Off button once (if Child lock
is activated see page 4). 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 water temperature display will flash until
communication between the controller and transceiver is complete. When
the display stops flashing the water heater is ready to supply hot water.
ADJUSTING TEMPERATURE
Simply press the 'hot water temp' or buttons until the required
temperature is displayed on th e digital monitor. The water temperature
and any active status indicator will flash until communication
between controller and transceiv er is complete. DO NOT open the hot
water tap until the flashing stops and the desired temperature is displayed.
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.
Ready to use
Ready to use
Whilst hot water outlets are open the set t emperature may be
lowered to a minimum of 37°C. For safety, it cannot then be
NOTE
raised above 43°C until all hot water taps are closed.
If the water heater is turned ‘Off’ whilst hot water taps are
ON!ON!
COLDCOLD
open it can not be turned back ‘On’ until all hot water taps
have been closed.
Always check water temperature at the outlet before use.
CAUTION
A parent or carer should always check the temperature
before a child is placed in contact with h ot water, see page 1.
Rinnai Australia 3 Operation Manual
HOTHOT
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