Rinnai 9 HW_CF OIM
Temperature Control
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 ow is varied, or more than one tap is in use.
Only one MC model water controller can be designated as a ‘Master’ water controller and this is normally used
in the kitchen. All the remaining water controllers are designated as ‘Sub’ water controllers and are for use in
bathrooms, toilets and laundries. The maximum temperature limit for all ‘Sub’ water controllers is restricted to 50°C
to minimise the risk of burns in these areas.
Any water controller that currently has priority is capable of setting the water temperature to be delivered, however
the water heater can only assign 'priority' to one controller at a time and deliver the one set temperature. The
available temperatures (°C) are as follows:
Water Controller
Temperatures (°C)**
Master (MC) 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 48, 50, 55*, 60*, 65*
Sub (MC or BC) 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 48, 50
Whilst hot water outlets are open ONLY the control used to set to delivery may be used to further
adjust it. Transfer of 'priority' between controllers is NOT possible until all hot water taps have
been closed. These are safety features.
For hygiene in sanitary areas such as bathrooms, the suggested temperature should be 37°C ~ 43°C.
The above is a suggestion only, as you may nd higher or lower temperatures more comfortable, however
maintaining lower temperatures also helps to save energy.
To obtain water temperatures lower than 37°C, simply open the cold water tap and add cold water until the desired
lower temperature is reached.
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 or the pre-set limit when water controllers are not tted, 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 (or the pre-set
limit of the appliance)
* Temperature may not be available on all installations. Some Rinnai gas continuous ow water
heaters can be programmed to deliver higher temperatures from the master water controller, or
may be programmed to restrict the maximum available delivery temperature. Contact Rinnai for
more details.
** Temperature limiting devices (where tted) may further control what maximum delivery
temperature is available to outlets.
Universal and Wireless and water controllers allow temperature selection only. Deluxe water controllers allow
temperature selection, have a clock function and the Deluxe Bathroom water controller has a shower saver / bath
ll function is also available, contact Rinnai for further information regarding Wireless and Deluxe water controllers
or visit www.rinnai.com.au.
Water Controller Congurations
Deluxe kitchen, bathroom and wireless water controllers are also available and various combinations of universal
and the deluxe and wireless water controllers can be used with the following limitations:
•
A maximum of FOUR water controllers can be tted.
•
Only ONE master controller can be installed. This can be a deluxe kitchen (MC-100V), or any other MC
model water controller (when programmed to be a 'Master' controller).
When a deluxe kitchen (MC-100V) water controller is tted it will always function as a 'Master'
controller, this is the default setting and can NOT be changed.
•
A up to a maximum of TWO BC-100V water controllers can be installed.
•
The FOURTH water controller in any installation MUST BE a MC-601Q or a MC-503RC-S.
To nd out more about the full range of Rinnai water controller models, contact Rinnai or visit: www.rinnai.com.au.
WATER TEMPERATURE CONTROL
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