Installing The Appliance; Water Connection; Temperature Mixing Device (Not Supplied With The Appliance); Gas Connection - Bosch OptiFlow Professional GWH12 1 CTD E23 F3 OL Installation Manual

12 | Installation (only by authorised technicians)
Item
Appliances over 150 MJ/h input
Table 6
1) unless appliance is certified for closer installation
2) Prohibited area below electricity meter or fuse box extends
to ground level
4.3

Installing the appliance

NOTICE: The appliance may be damaged if
dirt is allowed to enter via the gas or water
connections.
▶ Purge the pipes to eliminate
possible foreign bodies.
▶ Remove the appliance from the packaging.
▶ Check that all the material indicated is included.
▶ Remove the covers from the gas and water connections.
▶ Check that the gas type available matches that shown on
the sticker on the front of appliance, and on its dataplate.
CAUTION:
▶ Never support or balance the water
heater on the water and gas
connections.
Packaging materials can be recycled.
4.4

Water connection

▶ Identify the cold and hot water pipe to avoid possible cross
connection.
▶ Install a pressure reducing valve if required. It's preferable
to install this valve close to the water meter.
▶ Complete the cold (Fig. 2. [18]) and hot (Fig. 2, [9]) water
connections.
4.4.1 Temperature mixing device (not supplied with the
appliance)
WARNING:
This water heater can heat water to
temperatures which cause scalding.
6 720 810 559 (2016/06)
It is recommended that for sanitary fixtures use primarily for
Min.clea-
the purpose of personal hygiene, that a temperature control
rance (mm)
device be fitted (such as a tempering valve) as per AS3498.
1500
4.5

Gas connection

The gas connection to the water heater must absolutely with
AS/NZS5601.
▶ First ensure that the water heater corresponds to the gas
type available.
▶ Fit a gas shut-off valve on the gas supply line as close as
possible to the appliance.
▶ After installation of the gas supply line, thorough purging
and a tightness test must be carried out.
4.6

Altitude of installation site region

To ensure correct operation of the appliance, it must be
indicated the region altitude of the installation site.
▶ Enter the Service function (section 6.2).
Display with "P2".
▶ Press
▶ Press the button
Display with indication "E".
▶ Press
▶ Press the button
Display with indication "1".
▶ Press the button
of the installation site according to below table.
▶ Press the button
Display
1
2
3
4
5
6
Table 7
DANGER:
Non-compliance with applicable legal
standards may cause a fire or explosion,
causing material damage or personal injury
or even death.
Size gas supply as per AS/NZ5601.
Incorrect gas pipe sizing will not be covered
by the warranty.
until the display shows "P4".
.
until the display shows "AS".
.
or to select the region altitude
for 3 seconds.
Altitude
< 500 m
500 m - 1 000 m
1 000 m - 1 500 m
1 500 m - 2 000 m
2 000 m - 2 500 m
> 2500 m
OptiFlow Professional