Technical data

CONNECTIONS – ELECTRICAL
30
THERMOSTAT SETTING
The thermostat is adjustable from 60°C to 82°C. For reasons of safety and economy, we advise the
thermostat is set at the lowest temperature that will provide sufficient hot water. Discuss the thermostat
setting requirements with a responsible officer. Refer to “Temperature Control” on page 41.
If this water heater is installed as an in-series booster water heater as part of a commercial solar water
heating system, to maximise solar contribution it is recommended the thermostat is set at 60°C, unless
sanitising temperatures are required.
WIRING A POWER FLUED SYSTEM TO THE WATER HEATER
An indoor model can be wired to a power flued system. A power flued system must be designed by a
qualified person to suit the particular installation and for approval by the gas supply authority. The power flue
system must be interlocked with the water heater(s) to prevent the water heater(s) from operating if the
power flue is not working.
The principle of operation for multiple gas water heater control with a power flue is the same as for a single
water heater. Any water heater can switch on the fan and the burners can only come on when the sail switch
is closed.
To connect a power flue into the water heater system design, it is necessary to remove the bridging wire
from the terminal block of the water heater and connect the wiring to the power flue to these two terminals.
Refer to the wiring diagrams for the connection points on the water heater.
621 265 621 275
Wiring Diagrams