General Water Controller Information - Rinnai MC502S Operation & Installation 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'
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
limitation:
Wireless Only
Installations.
Only ONE MC502S 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:
Only ONE master controller can be installed. This can be a MC-70V, a MC-91
Wired & Wireless
(when programmed as a master controller) or a MC502S water controller.
Installations.
Up to TWO BC-70V water controllers can be installed.
The FOURTH water controller in any installation MUST BE a MC502S or a
MC-91.
Rinnai New Zealand
indicator will also go out. The burner will
2 Operation Manual