Bosch Optiflow GWH20 3 CT E23 F6 L S2405 - Installation Procedures; Minimum Clearances and Installation Steps

6 720 817 545 (2016/02)Optiflow
Installation (only by authorised technicians) | 11
housing.
▶ Ensure this intake is free from vegetation and other
obstructions.
In order to prevent corrosion, the combustion air must not
contain any corrosive substances.
Substances classed as corrosion-promoting include
halogenated hydrocarbons containing chlorine and fluorine
compounds. They may be found in solvents, paints, adhesives,
aerosol propellants and household cleaners.
If these conditions cannot be guaranteed, a different site must
be chosen for the appliance.
Surface temperature
The maximum surface temperature of the appliance is below
85 °C. No special safety precautions are required with regard
to flammable building materials.
▶ Ensure local building codes and regulations are followed.
4.2 Minimum clearances
• Install the appliance in accordance with the minimum
installation clearances indicated in Fig. 5 and Table 6,
according to AS/NZS5601.
• The appliance must not be installed over a heat source.
• Do not obstruct the openings of appliance.
• The appliance must installed in a position that is easily
accessible to allow service work. It is recommended the
appliance is installed no more than 2m from the ground to
the base of the appliance.
• The areas 30cms above and below the appliance must be
clear of obstacles.
Fig. 5 Minimum flue clearances
4.3 Installing the appliance
▶ 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.
6720817545-09.2V
N
C
J
B
J
A
C
A
K
G
A
H
N
F
J
A
C
K
B
B
B
G
K
H
Flue terminal positions
for water heaters in accordance
with AS/NZ5601
D
D
GM
P
K
E
E
Item Min.clea-
rance (mm)
A Below eaves, balconies and other
projections
300
B From the ground, above a balcony or other
surface
1)
1) unless appliance is certified for closer installation
300
C From a return wall or external corner
1)
300
D From a gas meter (GM) 1000
E From an electricity meter or fuse box (P)
2)
2) Prohibited area below electricity meter or fuse box extends
to ground level
500
F From a drain pipe or soil pipe 75
G Horizontally from any building structure
1)
or obstruction facing a terminal
500
H From any other flue terminal, cowl, or
combustion air intake
1)
300
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
1)
300
Appliances over 150 MJ/h input up to 200
MJ/h input
1)
300
K From a mechanical air inlet, including a spa
blower
1000
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
1000
Appliances over 150 MJ/h input 1500
Table 6
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.