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Bosch OptiFlow
Professional Internal
Room-sealed continuous flow
water heater and flue components
The OptiFlow Professional
Internal offers:
3 6 Star efficiency
3 Room sealed appliance
3 Inbuilt temperature controller
3 Electronically controlled modulation
3 50°C locked models available
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2 | OptiFlow Professional flue install instructions
O100
O60
>10 >10
80
240
583
B
A C
Bosch OptiFlow
Professional Internal
3 Room sealed appliance
3 Inbuilt controller
3 6 star efficiency
Technical Features Units 12L 16L 20L
Performance
Maximum gas consumption MJ 90.0 120.2 149.0
Minimum gas consumption MJ 11.9 18.0 18.0
Efficiency at 100% of nominal load % 82.4 82.4 82.4
Data relating to gas – Gas operating pressure
Natural gas kPa 1.13 1.13 1.13
LP gas kPa 2.75 2.75 2.75
Data relating to the water
Maximum admissible pressure kPa 1000 1000 1000
Minimum operating pressure kPa 100 100 100
Start up flow @ 15°C inlet water
temperature
Maximum flow, corresponding to
a temperature increase of 25OC
Maximum inlet temperature °C 80 80 80
Temperature locked model available
(adjustable to deliver 50°C at tap)
Electrical circuit
Power supply voltage VAC 230 230 230
Maximum power consumption W 100 100 100
Warranty Details (Domestic)
Parts and Labour Years 3 3 3
Heat Exchanger only Years 12 12 12
OptiFlow Professional Internal models Bosch Part Number
55°C set 12L/minute NG model 7736502487
55°C set 12L/minute LPG model 7736502488
50°C locked 12L/minute NG model 7736502489
50°C locked 12L/minute LPG model 7736502490
55°C set 16L/minute NG model 7736502495
55°C set 16L/minute LPG model 7736502496
50°C locked 16L/minute NG model 7736502497
50°C locked 16L/minute LPG model 7736502498
55°C set 20L/minute NG model 7736502499
55°C set 20L/minute LPG model 7736502500
50°C locked 20L/minute NG model 7736502501
50°C locked 20L/minute LPG model 7736502502
l/min 2.0 2.0 2.0
l/min 12.0 16.0 20.0
Yes Yes Yes
Measurements (mm) A B C
12L model 300 570 170
16L model 364 570 175
20L model 364 570 175
Connections
Water Gas
Cold Hot NG LPG
15mm (1/2”) 15mm (1/2”) 15mm (1/2”) 15mm (1/2”)
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OptiFlow Professional flue install instructions | 3
What you need to know
WHICH TYPE OF FLUE TO USE
Bosch OptiFlow Professional flue must be used with these appliances. Any installations with the incorrect flue will not
be approved and could pose a risk.
The flue used for the Bosch OptiFlow Professional is a 60/100 Ø coaxial flue. This flue allows the appliance to draw air
in from outside, and expel flue gas back outside, making the appliance room sealed.
THE FLUE MATERIALS USED
Inner and outer layers are extruded aluminium. The outer layer is painted white.
CUTTING THE FLUE TO LENGTH
Flue extensions can be cut to length. Care should be taken to remove burrs to maintain the integrity of the seal to the
adjoining fitting.
STRAIGHT FLUE LENGTH TABLE
12/16L 20L
Maximum vertical flue length 12m 8m
Maximum horizontal flue length 10m 6m
REDUCTION IN LENGTHS FOR BENDS
For every bend added to a flue configuration, the maximum acceptable flue length will reduce by the amount shown below
Flue Bend reduction Table
45° Bend 1m
90° Bend 2m
CONDENSATE TRAPS
Condensate is more likely to form in longer lengths of flue, or when outside ambient air temperature is low. The table
below shows the length and temperature combinations when a condensate trap should be used.
Condensate trap kits are supplied with all components required for installation.
10m
FLUE LENGTH
9m
8m
7m
6m
5m
4m
3m
2m
1m
-100C -50C 00C 50C 100C 150C 200C 250C
3
8
LOWEST OUTSIDE AIR TEMPERATURE
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4 | OptiFlow Professional flue install instructions
Bosch OptiFlow Professional
Flue Configurations
Selecting the Right Flue
1 Map your flue configuration.
2 Check that the configuration, including bends, is within the
maximum flue limits.
3 Calculate whether a condensate trap is required using the
table on page 3.
4 Choose the flue kit that best suits your application. (The kit
includes the appliance adaptor and terminal.)
5 Add any flue lengths, bends, or condensate traps required for
your configuration.
6 Place your order using the Bosch part numbers shown below.
Vertical Flue Kit
Part No: 7716050071
Telescopic Horizontal Flue Kit
Part No: 7716050063
Fixed Length Horizontal Flue Kit
Part No: 7716050064
Highline Horizontal Flue Kit
Part No: 7736995083
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OptiFlow Professional flue install instructions | 5
90° elbow
Part No: 7736995079
Straight Pipe 350 mm
Part No: 7736995059
45° elbow
Part No: 7736995071
Straight Pipe 750 mm
Part No: 7736995063
Straight Pipe 1500 mm
Part No: 7736995067
Vertical Condensate Collector
Part No: 7736995089
Horizontal Condensate Collector
Part No: 7736995087
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6 | OptiFlow Professional flue install instructions
A B C D
A Standard vertical flue – Minimum length
Components
Part Numbers 7716050071
Number of components required
Ø60/100 1.4m 1
B Standard vertical flue
Components
Part Numbers 7716050071
Maximum length and number of components required
Ø60
/ 100
12m (12/16L)
8m (20L)
1
7736995059 (350mm)
7736995063 (750mm)
7736995067 (1500mm)
Up to 10.6m (12/16L)
Up to 8.6m (20L)
C Standard horizontal flue assembly
Components
Part Numbers
Maximum length and number of components required
Ø60/100
10m (12/16L)
6m (20L)
7716050064 (fixed length kit) or
7716050063 (telescopic kit)
1
7736995089
1 (if
required)
7736995059 (350mm)
7736995063 (750mm)
7736995067 (1500mm)
Up to 9.5m (12/16L)
Up to 5.5m (20L)
D Standard horizontal flue assembly with 90°
Components
Part Numbers
Maximum length and number of components required
Ø60
/ 100
8m (12/16L)
4m (20L)
7716050064 (Fixed length kit) or
7716050063 (Telescopic kit)
1 1
7736995079
7736995059 (350mm)
7736995063 (750mm)
7736995067 (1500mm)
Up to 7.5m (12/16L)
Up to 3.5m (20L)
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A B C D
A Extension flue horizontal and upwards
Components
Part Numbers 7736995083 7736995079
Maximum length and number of components required
Ø60 / 100
8m (12/16L)
4m (20L)
1 2
B Extension flue horizontal and upwards
Components
Part Numbers 7736995083 7736995079
Maximum length and number of components required
Ø60 / 100
10m (12/16L)
6m (20L)
1 1
C Vertical flue – two 45° bends
Components
Part Numbers 7716050071 7736995071
Maximum length and number of components required
Ø60/100
10m (12/16L)
6m (20L)
1 1 (2 x bends per pack)
7736995059 (350mm)
7736995063 (750mm)
7736995067 (1500mm)
Up to 7.5m (12/16L)
Up to 3.5m (20L)
7736995067 (350mm)
7736995063 (750mm)
7736995067 (1500mm)
Up to 9.5m (12/16L)
Up to 5.5m (20L)
7736995067 (350mm)
7736995063 (750mm)
7736995067 (1500mm)
Up to 8.6m (12/16L)
Up to 4.6m (20L)
7736995089
1 (if required)
7736995089
1 (if required)
7736995089
1 (if required)
D Vertical flue – two 90° bends
Components
Part Numbers 771650071 7736995079
Maximum length and number of components required
Ø60 /
100
8m (12/16L)
4m (20L)
1 2
7736995067 (350mm)
7736995063 (750mm)
7736995067 (1500mm)
Up to 7.5m (12/16L)
Up to 3.5m (20L)
7736995087 7736995089
1 (if required) 1 (if required)
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Robert Bosch Australia Pty. Ltd.
1555 Centre Rd
Clayton Victoria 3168
Sales Hotline: 1300 30 70 37
Sales Fax: 1300 30 70 38
bosch-climate.com.au
Technical data subject to modification without notice.
Printed in Australia. Any color variations are due to the limitations of the printing process.
Printed on 100% chlorine-free bleached cellulose manufactured in an environmentally friendly process.
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