Wiring Diagrams - Rinnai Prestige Operation & Installation Manual

INSTALLATION - ELECTRIC BOOSTED SYSTEMS

Wiring Diagrams

Single Element Twin Element
A flexible 20 mm conduit is required for the electrical cable to the storage cylinder. The conduit is to be connected
to the unit with a 20mm terminator. Connect the power supply wires directly to the terminal block and earth tab
connections ensuring there are no excess wire loops inside the front cover. Connections for twin element heaters
Twin element heaters are wired for non simultaneous operation. A flexible 20 mm conduit is required for the
electrical cable to the storage cylinder. All wiring passes through the lower entry. The conduit is to be connected
to the unit with a 20 mm terminator. A common neutral is used. Connect the power supply wires directly to the
terminal block and earth tab connections ensuring there are no excess wire loops inside the front cover.
Heating Element Thermostat Temperature Settings
Australian Standards require a minimum thermostat set point of 60°C to inhibit the growth of Legionella Pneumophilia
bacteria. These standards also require that the thermostat set point of water heaters fitted with an upper (or
booster) element is at least 10°C below the thermostat set point of the lower element.
In the interests of durability, the thermostat set point for storage cylinders should not exceed 70°C. Hence, in
systems with a single heating element only the thermostat set point should be at least 60°C and no greater than
70°C. In systems with both a lower and upper (or booster) element, the thermostat set point of the lower element
should be between 60°C and 70°C and the upper element 50°C - 60°C.
Rinnai 56 Split Solar OIM