Water Temperature Control; Maximum Delivery Temperatures; Operation Without Water Controllers; Rinnai Water Controllers - Rinnai REU-AM2024WD-SA Operation And Installation Manual

1.3WATERTEMPERATURECONTROL
The purpose of a Temperature Controller is to enable the user to have localised control over the hot water supply.
Used correctly, the hot water unit will supply hot water at the temperature selected, even when the water flow is
varied, or when more than one tap is used.
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 fitted) 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).
Rinnai continuous flow 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.

1.3.1 MAXIMUM DELIVERY TEMPERATURES

Rinnai continuous flow water heaters are factory pre-set to 55°C maximum delivery temperature.
Each temperature controller is factory pre-set to 50°C maximum delivery temperature can be individually
programmed.
For the majority of applications, the factory pre-set temperature is appropriate; in the unlikely event this is not the
case this setting can be increased or decreased by an authorised person such as a licensed plumber.
Adjustments to the operation of your hot water unit can be made with any of the temperature controllers.

1.3.2 OPERATION WITHOUT WATER CONTROLLERS

Rinnai continuous flow water heater products do not use a pilot light. When installed and operated, the opening
of any hot water tap will automatically start the appliance. Once water is flowing through the appliance the burner
will be ignited by electronic ignition. When the hot water tap is closed and water flowing through the appliance has
stopped the burner flame will extinguish.

1.3.3 RINNAI WATER CONTROLLERS

Universal and Deluxe water controllers can be used together and will function as described in the dedicated section
of this manual. Refer to "Water controller combinations & configurations" to confirm the maximum number and
combination of water controllers that can be fitted to your water heater model. Other manufacturers water controllers
are NOT compatible with Rinnai water heaters.
Location
Water controllers must be installed in shaded and clean locations. They should be fitted out of reach of children
(suggested height from floor to be at least 1500 mm).
Water resistance
The MC-601 universal water controller is a water resistant device, however excessive exposure to water such as
immersion may result in damage to the water controller. Durability of water controllers is improved when positioned
outside of the shower recess.
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