Quick Installation Tips - Bosch Highflow 17e Quick Reference Manual

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Quick installation tips

The installation tips provided in this quick refererence guide are a guide
only. Please refer to the latest AS 5601 or NZ 5621 edition and local
authority guidelines. Bosch gas hot water systems are to be installed
by an authorised person only.
u    S elect the water heater that best suits the customer's needs.
u   C heck cold water pressures to ensure they are within the
min/max range required. The installation of a pressure
limiting valve may be required for pressures above 800kPa
(refer to installation manuals).
u   C heck gas type required.
u   C heck maximum gas load of installation (if other
appliances are or may be installed in the future). This will
influence a number of factors such as:
1. Property gas service size, regulator and gas meter
size/capacity and house pipe sizing (natural gas);
2. Number and size of cylinders, regulator capacity and
house pipe sizing (LPG).
u   P osition the water heater in compliance with AS 5601 /
NZ 5621, manufacturers instructions and local authority
guidelines.
u   K eep hot water piping to a minimum. Consult AS 3500 /
NZ 3500 for pipe sizing.
u    M ount water heater on an external or internal wall,
depending on the water heater model, using fixing capable
of supporting the unit weight (see technical
specifications).
u   H ighflow range and 32 Series: Electricity supply (VAC):
230-240, 50Hz (10 amp weatherproof power point
recommended within 500 mm of the unit).
u   C onsult AS 5601/NZ 5621 and determine the correct gas
pipe sizing for the installation. (Do not forget to include
or make provision for existing or future gas loads such
as heating, cooking appliances, etc.)
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u   C onnection of the gas supply to the appliance must
be via an approved isolation valve at the unit.
u    R efer to technical specifications for the correct gas
connection size.
u   P urge and flush gas piping prior to connection to unit.
u   C onnection of cold water piping is via an approved
isolation valve.
u   F lush cold water piping of debris prior to connection
to the unit.
u   S ee technical specifications for cold and hot water
connection sizes to the unit.
u   I nstall temperature control pads if desired (available
for Highflow and 32 Series). DO NOT ATTACH THE
TEMPERATURE CONTROLLER TO ELECTRONIC WATER
HEATERS WHILST THE UNIT IS POWERED.
u   A fter completing the installation of the unit, remove the
gas test point sealing screw, connect your manometer
to the gas inlet test point, turn on the water, gas and
(if applicable) power supplies to the unit.
u   O perate all other gas appliances with the water heater
operating at maximum water flow from the hot tap and
confirm that the gas inlet pressure does not drop below
the pressure range required (see technical specifications).
Isolate gas supply and retighten test point.
u   P lease refer to installation manuals for full commissioning
procedures.
u   C onfirm that the water heater delivers the temperature
the consumer requires, explain the appliance operation
to the consumer and hand over the operation instructions.
Please leave your contact details with the consumer.