Installation Configurations; Ecological Ambient Heat Recovery - Bosch Compress 3000 DW FO Installation Instructions Manual

This water heater must be directly connected to a 230V-240V
AC, 50Hz mains power supply. When connected off grid,
please make sure a 230V-240V AC 50Hz true sine wave power
supply is available.
Do not connect this unit to inverters providing square sine
waves.
Electrical connections
WARNING:
All electrical work and fixed wiring must be
carried out by a qualified professional and in
accordance with the Wiring Rules AS/NZS
3000 and local authority requirements.
The water heater must be installed on its own circuit with a
breaker switch installed directly at the switchboard.
▶ Remove the top cover.
▶ Route the power supply cord through the orifice next to the
drain port.
▶ Open the electric connection box.
▶ Connect the power supply wires and earth tab directly to
the provided terminal block, ensuring there are no
unnecessary excess wire loops inside the electric
connection box.
▶ Close the electric connection box.
Fig. 11
Compress 3000 DW FO
2.
1.
6720801244-12.2V
WARNING:
Proper ground connection is essential.
The presence of water in the piping and
water heater does not provide sufficient
conduction for a ground. Non metallic
piping, dielectric unions, flexible
connectors, etc., can cause the water heater
to be electrically isolated.
Electrical test requirements
WARNING:
This water heater contains electronic
equipment and 500V insulation tests must
only be conducted between active and earth
and between neutral and earth. An active to
neutral test WILL damage the electronics.
AS/NZS 3000:2000, clause "Results" (6.3.3.3.2) states:
"The value of 1 MOhm may be reduced to 0.01 MO for sheathed
heating elements"
This water heater has been tested to AS/NZS 3350.1:2002
clause 16 "Leakage current and electric strength" and passed
the requirements of this Standard. Therefore, this water heater
complies with the conditions stated in AS/NZS 3000:2000
clause 6.3.3.3.2 (b).
4.6

Installation configurations

4.6.1 Ecological ambient heat recovery

Even on cold days, heat is drawn from surrounding ambient air.
The heat pump will operate at temperatures between a
minimum of 3 °C and maximum of 40 °C. The electrical element
will operate when Combi mode is selected and the air
temperature is below 3 °C or higher than 40 °C and heating is
required. The efficiency of the water heater increases as the
surrounding ambient air temperature increases.
Automatic safety controls are fitted to the water heater to
provide safe and efficient operation.
Additionally, the heat pump water heater enables direct
connection in series to a second heat generator, e.g. a solar
heating system or a boiler as backup hot water generation
sources.
Installation instructions | 19
6 720 801 244 (2013/08)