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Fitting Hanging-Plate; Installing The Appliance; Water Connection; Gas Connection - Bosch Optiflow Professional GWH12 Installation Manual

Room sealed gas continuous flow water heaters 1 ctd e23/31 f5 l
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14 | Installation (only by an authorised technicians)
Item
A Below eaves, balconies and other
projections
B From the ground, above a balcony or other
1)
surface
C From a return wall or external corner
D From a gas meter (GM)
E From an electricity meter or fuse box (P)
F From a drain pipe or soil pipe
G Horizontally from any building structure
or obstruction facing a terminal
H From any other flue terminal, cowl, or
1)
combustion air intake
J Horizontally from an openable window, door, non-
mechanical air inlet, or any other opening into a building
with the exception of sub-floor ventilation:
Appliances up to 150 MJ/h input
Appliances over 150 MJ/h input up to 200
1)
MJ/h input
K From a mechanical air inlet, including a spa
blower
N Vertically below an openable window, non-mechanical air
inlet, or any other opening into a building with the
exception of sub-floor ventilation:
Appliances over 50 MJ/h input and up to
150 MJ/h input
Appliances over 150 MJ/h input
Table 10
1) unless appliance is certified for closer installation
2) Prohibited area below electricity meter or fuse box extends
to ground level
4.4

Fitting hanging-plate

Before fitting the hanging-plate, ensure that
the water, gas, and flue connections can be
installed in this area.
No special wall protection is necessary. The wall has to be
capable of supporting the weight of the appliance.
▶ Find a suitable location.
▶ Drill the required holes.
▶ Fix the hanging plate using appropriate fixings (not
supplied).
6 720 810 560 (2016/06)
Min.clea-
rance (mm)
300
300
1)
300
1000
2)
500
75
1)
500
300
1)
300
300
1000
1000
1500
4.5

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 items indicated are included (section
2.3).
▶ 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.
4.6

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, [8]) water
connections.
4.7

Gas connection

DANGER:
Non-compliance with applicable legal
standards may cause, material damage,
personal injury, or even death.
The gas connection to the water heater must comply with the
AS/NZS5601.
▶ First ensure that the water heater corresponds to the gas
type available.
▶ Fit a gas isolation 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.
Optiflow Professional

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