Connections - Electrical - Raypak B0200 Owner's Manual

CONNECTIONS – ELECTRICAL
All electrical work and permanent wiring must be carried out by a qualified person and in accordance with the
Wiring Rules AS/NZS 3000 and local authority requirements.
The water heater is supplied with a 1.8 metre lead and plug and requires a 240 V 50 Hz general purpose outlet
(GPO) to be located within 1.0 metre of the installation. NOTE: For outdoor installations the GPO must be
weatherproof. The GPO must be clear of the flue exhaust, draining water, gas supply pipe and water connections.
The water heater must be properly earthed and the installation of a Residual Current Device (RCD) is
recommended for added electrical safety
CAUTION: DO NOT LOCATE CABLES IN FRONT OF OR UNDERNEATH THE BURNER.
Where conduit is mounted to the water heater a 10mm air gap must be maintained from the water heater casing to
eliminate possible overheating. DO NOT locate conduits or cables where they will obstruct or restrict removal of
panels, access doors etc.
The water heater must NOT be able to operate without the pump running.
The water heater and pump may be supplied from the same electrical circuit, alternatively the 240 volt supply to the
water heater may be provided via auxiliary contacts of the pump contactor or relay (if fitted).
Where additional control wiring is connected to the water heater, which is not isolated by the GPO, a suitable
warning label must be affixed to the water heater identifying the isolation point for that particular wiring (e.g. by
circuit breaker or fuse number and switchboard identification number or location).
THERMOSTAT SETTING
The thermostat is adjustable from 20 C to 80 C. For reasons of safety and economy, we recommend that the
thermostat is set at the lowest temperature that will provide sufficient hot water. Discuss the thermostat setting
"Temperature Control"
requirements with the householder or responsible officer. Refer to on page 30.
INTERMITTENT PUMP OPERATION
For applications utilising intermittent pump operation an optional pump run on timer kit, part number 56076873,
must be fitted to the water heater to prevent nuisance tripping of the high limit thermostat due to heat build up in the
heat exchanger. The timer should be set to allow the pump to operate for at least ten (10) minutes.
EXTERNAL CONTROLS
The water heater can be wired for use with an external flow switch, remote
control thermostat or a remote time switch. To connect an external control to
the water heater it is necessary to remove the bridging wire between terminals
1 and 2 of the water heater terminal block and connect the external control
across these two terminals (refer to the diagram opposite and to the wiring
diagrams on pages 22 to 23.
Where an external thermostat is utilised the water heater thermostat should
be adjusted to a temperature higher than the setting on the remote thermostat (Refer to "Temperature Control" on
page 30.
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. 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.
Where multiple water heaters are connected to a power flue, the control
system must be designed so that any of the water heaters can activate
the fan in the flue and none of the burners can come on until the flow in
the flue has been established.
To connect a power flue to the water heater it is necessary to remove
the bridging wire between terminals 3 and 4 of the water heater terminal
block and connect the wiring to the power flue across these two
terminals (refer to the diagram opposite and to the wiring diagrams on
pages 22 and 23
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