Bosch Highflow 17e User manual

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Quick Reference Guide
Bosch Gas Hot Water Systems

2
Bosch has been delivering hot water to Australian
and New Zealand households for over 50 years.
Manufacturing continuous flow water heaters since
the 1930’s, Bosch has secured a name synonymous
with quality and innovation that continues to drive the
company today.
The Bosch mission is to deliver the most reliable and
efficient hot water appliances to fit the lifestyles of
today’s modern households. As a result, Bosch now
offers the largest range of continuous flow gas hot
water systems on the market.
This quick reference guide has been designed for
specifiers, tradespersons, architects and retail staff
involved in the selection, sizing and installation of
Bosch gas hot water systems.

3
Contents
1 Bosch continuous flow gas hot water systems p 4
1.1 Range overview p 4
1.2 Technical specifications p 5
1.2.1 Electronic gas hot water systems p 5
1.2.2 HydroPower gas hot water systems p 11
1.2.3 Pilot gas hot water systems p 13
2 Commercial gas hot water systems p 14
2.1 32 Series – commercial applications p 14
2.2 Professional Packs p 15
2.3 Manifolding options p 16
2.4 Commercial flueing accessories p 17
3 Sizing guide p 17
4 Quick installation tips p 18
5 Installation regulations p 19
5.1 Minimum clearance of flue terminals p 19
5.2 Installation locations for internal
continuous flow gas hot water systems p 20
6 Temperature controllers
for Highflow and 32 Series p 21
6.1 Highflow temperature controllers p 21
6.2 32 Series controllers p 21
7 Frequently asked questions (FAQs) p 22
8 Contact p 23
8.1 Bosch Thermotechnology Australia p 23
8.2 Bosch Thermotechnology New Zealand p 23
8.3 For you own records p 23

4
Highflow
u 17, 21 and 26 litres per minute
u External installation only
u Antifrost as standard
u 50°C limited models available in
Australia (standard model: 55°C)
u Up to 4 optional controllers can be
installed for precise temperature
control, increased energy
efficiency and water saving
features
u Minimum 5.5 star energy efficiency
32 Series
u 32 litres per minute
u External or internal* installation
u Suitable for large homes and
commercial applications
u Up to 3 optional controllers can be
installed for precise temperature
control (with KM3211WH models)
u Additionally, the 32Q model
includes a built-in pump and a
main controller, which allows for
programmed water re-circulation
into the hot water supply line
u Outstanding energy efficiency and
safety features
External HydroPower
u 10, 13 and 16 litres per minute
u External installation only
u Exclusive to Bosch – lighting a
flame with water!
u Forget about installing a power
point, replacing batteries, or
lighting a pilot light
u Easy installation
Internal HydroPower
u 10, 13 and 16 litres per minute
u Internal* installation only
u Ideal for frost prone areas
u No batteries, matches or power
supply needed for ignition
u Easy installation
Pilot Ignition**
u 10, 13 and 16 litres per minute
u External installation only
u Standing pilot light
u Easy installation
*Internal installations require flueing as per AS 5601 or NZ 5621,
respectively. Flue kits available from Bosch for 32 Series. For
more information, please see page 17.
**Pilot gas hot water systems not available in New Zealand.
All Bosch hot water systems are continuous flow gas hot water systems,
which means they only heat the required water on demand. They are wall-
hung, easy to install and much smaller than conventional storage systems.
Bosch continuous flow gas
hot water systems
1
Range overview1.1

5
50°c
This appliance
delivers water
NOT EXCEEDING 50°C
in accordance with
AS3498. Refer to AS/NZ3500,
local requirements and
installation instructions to
determine if additional delivery
temperature control is required.
Models
Highflow 17e Highflow 21e Highflow 26e
Part number YS1770RA YS2170RA YS2670RA
50°C limited (MP52)* YS1770RA5* YS2170RA5* YS2670RA5*
Ignition type Electronic Electronic Electronic
Flow rate L/min (25°C rise) 17 21 26
Flow rate L/min (50°C rise) 8.5 10.5 13
Mj/h 135 170 200
Star rating 5.66 5.56 5.53
Antifrost Standard Standard Standard
Installation External External External
Air supply / exhaust Power Flued Power Flued Power Flued
Gas type NG/LPG NG/LPG NG/LPG
Gas supply pressure (kPa) NG: 1.13 – 3.0 NG: 1.13 – 3.0 NG: 1.13 – 3.0
LPG: 2.75 – 3.0 LPG: 2.75 – 3.0 LPG: 2.75 – 3.0
Min. inlet water pressure for
max. flow (kPa) 100 130 230
Max. allowable inlet water
pressure (kPa) 1,000 1,000 1,000
Min flow rate (L/min) 2.5 2.5 2.5
Electricity
Supply (VAC) 230 - 240, 50 Hz (10 amp weatherproof power point
recommended within 500 mm of the unit)
Power Consumption (watts)
In use: 40 In use: 45 In use: 51
Antifrost: 129 Antifrost: 129 Antifrost: 129
Pipe Connection Sizes
Gas NG (mm) 20 (3/4”) 20 (3/4”) 20 (3/4”)
Gas LP (mm) 20 (3/4”) 20 (3/4”) 20 (3/4”)
Cold Water (mm) 20 (3/4”) 20 (3/4”) 20 (3/4”)
Hot Water (mm) 20 (3/4”) 20 (3/4”) 20 (3/4”)
Unit Dimensions
Height (mm) 520 520 600
Width (mm) 350 350 350
Depth (mm) 170 170 170
Carton weight (in kg) 18 19 22
Domestic Warranty
Parts and labour 3 years
Heat exchanger 10 years (part only)
Temperature controllers 3 years (parts and labour)
Optional Temperature Controllers
Main controller Standard: YPRM66XB**; Premium: YPRM67XB
Bathroom controller Standard: YPRS66XB**; Premium: YPRS67XB
Sub-controller YPRP62XB
Accessories
Lockable recess box 17 and 21e: RBHF50L**, 26e: RBHF26L**
Fully enclosed recess box FERB70**, RBHF304WDA***
Pipe cover YPHC304
* 50°C limited Highflow
models only available in
Australia. These units comply
with Australian Standards
3489-2003 (licence number
IPC20002). They have been
specifically designed for
applications, which require a
maximum water temperature
of 50°C. This eliminates the
need for mechanical tempering
valves.
** Only available in Australia.
*** Only available in New Zealand.
Technical specifications1.2
Highflow range
1.2.1 Electronic gas hot water systems

6
Product diagram
26e
Product diagram
17e & 21e
Connection dimensions – View from the top
26e
Connection dimensions – View from the top
17e & 21e
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7
Product diagram
Recess boxes for Highflow series
17e & 21e – RBHF50L (Australia only)
26e – RBHF26L (Australia only)
Product diagram
Fully enclosed recess box
FERB70 (Australia only)
Brick opening
dimensions (mm)*
Height 930
Width 345
Depth 145
*Minimum dimensions
Brick opening
dimensions (mm)*
Height 930
Width 365
Depth 175
*Minimum dimensions
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Product diagram
Fully enclosed recess box
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dimensions (mm)*
Height 980
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Depth 205
(if fully recessed)
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The all new Highflow range represents the technological pinnacle of water heating. The new
electronic series lets you enjoy uncompromised quality, higher capacities and even more
temperature controllers.

9
Models
Bosch 32 Bosch 32Q
Part number KM3211WH KM3211WHQ
Ignition type Electronic Electronic
Flow rate L/min (25°C rise) 32 32
Flow rate L/min (50°C rise) 16 16
Gas input - low (Mj/h) 25 25
Gas input - high (Mj/h) 250 250
Star rating 4.8 4.8
Antifrost Standard Standard
Installation Internal* or External Internal* or External
Air supply / exhaust Power Flued Power Flued
Gas type NG / LP NG / LP
Gas supply pressure (kPa) NG: 1.13 – 3.0 NG: 1.13 – 3.0
LPG: 2.75 – 3.0 LPG: 2.75 – 3.0
Min. inlet water pressure for
max. flow (kPa) 200 200
Max allowable inlet water
pressure (kPa) 900 900
Min. flow rate (L/min) 3.5 3.5
Electricity
Supply (VAC) 230 - 240, 50 Hz (10 amp weatherproof power point
recommended within 500 mm of the unit)
Power consumption (watts)
In use (NG): 100 In use (NG): 135
In use (LPG): 115 In use (LPG): 150
Antifrost: 115 Antifrost: 140
Pipe Connection Sizes
Cold water inlet (mm) 20 (3/4”) 20 (3/4”)
Hot water outlet (mm) 20 (3/4”) 20 (3/4”)
Hot water return (mm) - 15 (1/2”)
Gas inlet (mm) 20 (3/4”) 20 (3/4”)
Unit Dimensions
Height (mm) 615 615
Width (mm) 464 464
Depth (mm) 240 240
Weight (kg) 29 32
Warranty
Domestic
3 years parts and labour 3 years parts and labour
10 years heat exchanger
(part only)
10 years heat exchanger
(part only)
Commercial
2 years parts and labour 2 years parts and labour
5 years heat exchanger
(part only)
5 years heat exchanger
(part only)
Optional Temperature Controllers
Main controller RCM3211 (included with 32Q)
Sub-controller RCS3211
Flueing
Vent cap KMVC100
Vertical flue kit FKV32LTR
Horizontal flue kit FKH32LTR (requires vent cap KMVC100)
Accessories
Quick connection cable KMQC0703339 (for 2 units in manifold)
System controller KMSC201 (for 3-6 units in manifold)
3m cable for system controller 0700073
5m cable for system controller 0700074
32 Series (for large homes and commercial applications)
* Internal installations require
flueing as per AS 5601 / NZ
5621. Flue size: 100 mm. Flue
kits available for 32 Series. For
more information, please see
page 17.

10
Product diagram*
KM3211WH & KM3211WHQ
Connection dimensions – View from the top
KM3211WHQ
(Bosch 32Q)
Connection dimensions – View from the top
KM3211WH
(Bosch 32)
*All dimensions are in mm.
Dimensions are identical for
KM3211WH and
KM3211WHQ;
KM3211WHQ shown.
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11
1.1
Models
Bosch 10H Bosch 13H Bosch 16H
Part number TF250-8G TF325-8G TF400-8G
Ignition type HydroPower HydroPower HydroPower
Flow rate L/min (25°C rise) 10 13 16
Flow rate L/min (50°C rise) 5 6.5 8
Mj/h 79 104 130
Star rating 5.1 4.6 5.0
Installation External External External
Air supply/ exhaust Natural draft Natural draft Natural draft
Gas type NG/LPG NG/LPG NG/LPG
Gas supply pressure (kPa) NG: 1.13 – 3.0 NG: 1.13 – 3.0 NG: 1.13 – 3.0
LPG: 2.75 LPG: 2.75 LPG: 2.75
Min. inlet water pressure for
max. flow (kPa) 60 100 130
Max. allowable inlet water
pressure (kPa) 800 800 800
Min. flow rate (L/min) 3.5 3.5 3.5
Pipe Connection Sizes
Gas NG (mm) 20 (3/4”) 20 (3/4”) 20 (3/4”)
Gas LP (mm) 15 (1/2”) 15 (1/2”) 15 (1/2”)
Cold water inlet (mm) 15 (1/2”) 15 (1/2”) 15 (1/2”)
Hot water outlet (mm) 15 (1/2”) 15 (1/2”) 15 (1/2”)
Unit Dimensions
Height (mm) 845 845 936
Width (mm) 405 405 460
Depth (mm) 265 265 265
Carton weight (kg) 21 22 25
Warranty
Parts and labour 2 years
Heat exchanger 10 years (part only)
Accessories
Heat shield 9 708 061 400.ZG1
Exogel valve (Antifrost)* H707 060 151*
Product diagram
External HydroPower range
Dimensions
10H (mm) 13H (mm) 16H (mm)
A405 405 460
B845 845 936
C533 533 533
D240 240 240
E68 68 82
1.2.2 HydroPower gas hot water systems
* An exogel valve is
recommended for areas that
drop to 0°C for short periods.
In areas prone to extended
periods of frost and sub-zero
temperatures, only Internal
HydroPower models, external
Highflow models and 32 Series
models are suitable.
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12
Internal HydroPower range
Models
Bosch 10H Bosch 13H Bosch 16H
Part number WR250-8G WR325-8G WR400-8G
Ignition type HydroPower HydroPower HydroPower
Flow rate L/min (25°C rise) 10 13 16
Flow rate L/min (50°C rise) 5 6.5 8
Mj/h 79 104 127
Star rating 4.5 4.8 4.6
Installation Internal* Internal* Internal*
Air supply/ exhaust Natural draft Natural draft Natural draft
Gas Type NG/LPG NG/LPG NG/LPG
Gas supply pressure (kPa) NG: 1.13 – 3.0 NG: 1.13 – 3.0 NG: 1.13 – 3.0
LPG: 2.75 LPG: 2.75 LPG: 2.75
Min. water pressure for Max.
flow (kPa) 60 100 130
Max. allowable inlet water
pressure (kPa) 800 800 800
Min. flow rate (L/min) 3.5 3.5 3.5
Pipe Connection Size
Gas NG (mm) 20 (3/4”) 20 (3/4”) 20 (3/4”)
Gas LP (mm) 15 (1/2”) 15 (1/2”) 15 (1/2”)
Cold water inlet (mm) 15 (1/2”) 15 (1/2”) 15 (1/2”)
Hot water outlet (mm) 15 (1/2”) 15 (1/2”) 15 (1/2”)
Unit Dimensions
Height (mm) 680 755 755
Width (mm) 360 400 460
Depth (mm) 220 220 220
Carton weight (kg) 12.5 16 20
Warranty
Parts and labour 2 years
Heat exchanger 10 years (part only)
Product diagram
Dimensions
10H (mm) 13H (mm) 16H (mm)
A360 400 460
B680 755 755
C228 228 334
D115 140 140
E462 500 530
F162 196 166
G25 30 30
HLPG R1/2” R1/2” R1/2”
NG R3/4” R3/4” R3/4”
Flue Kits**
Flue kits to suit Internal HydroPower
appliances:
100mm to suit internal 10H
125mm to suit internal 13H & 16H
**Not supplied by Bosch. Flueing available
from plumbing supply stores
* Internal installations require
flueing as per AS 5601
respectively NZ 5621.
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13
Product diagram
Models
Bosch 10P Bosch 13P Bosch 16P
Part number TF250 TF325 TF400
Ignition type Standing pilot Standing pilot Standing pilot
Flow rate L/min (25°C rise) 10 13 16
Flow rate L/min (50°C rise) 5 6.5 8
Mj/h 82 100 130
Star rating 4.6 3.9 4.3
Installation External External External
Air supply/ exhaust Natural draft Natural draft Natural draft
Gas type NG/LPG NG NG
Gas supply pressure (kPa) NG: 1.13 – 3.0 NG: 1.13 – 3.0 NG: 1.13 – 3.0
LPG: 2.75
Min. water pressure for max.
flow (kPa)
NG: 90 NG: 100 NG: 150
LPG: 55
Max. allowable inlet water
pressure (kPa) 1200 1200 1200
Min. flow rate (L/min) 5.0 2.0 2.0
Pipe Connection Size
Gas NG (mm) 20 (3/4”) 20 (3/4”) 20 (3/4”)
Gas LP (mm) 15 (1/2”) n/a n/a
Cold Water (mm) 15 (1/2”) 15 (1/2”) 15 (1/2”)
Hot Water (mm) 15 (1/2”) 15 (1/2”) 15 (1/2”)
Unit Dimensions
Height (mm) 845 845 936
Width (mm) 405 405 460
Depth (mm) 265 265 265
Carton weight (kg) 21 22 24
Warranty
Parts and labour 2 years
Heat exchanger 10 years (part only)
Accessories
Heat shield 9 708 061 400.ZG1
Exogel valve (Antifrost)** H707 060 151**
Dimensions
10P (mm) 13P (mm) 16P (mm)
A405 405 460
B845 845 936
C533 533 550
D240 240 240
1.2.3 Pilot gas hot water systems*
* Pilot range is not available in
New Zealand.
** An exogel valve is
recommended for areas that
drop to 0°C for short periods.
In areas prone to extended
periods of frost and sub-zero
temperatures, only Internal
HydroPower models, external
Highflow models and 32 Series
models are suitable.
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14
Benefits of the 32 Series for commercial applications
u The 32 Series is designed specifically for commercial use.
A flow rate of 32 litres per minute at a 25°C temperature
rise makes the 32 Series a true commercial hot water
system.
u The 32 Series has a coated copper heat exchanger to
prevent corrosion and deterioration. The internal copper
piping is 25% thicker than standard domestic models for
extra durability.
u Depending on the water volume required, the Bosch 32
models (KM3211WHNG/LP) can be installed as a single
unit, manifold (see chapter 2.3) or are delivered as part of
a Bosch Professional Pack, a pre-assembled system
including a 315 litre stainless steel storage tank (see
chapter 2.2).
u External or internal* installation options make the 32
Series conveniently versatile.
u Up to 3 optional temperature controllers can be installed
with a Bosch 32 model (KM3211WHNG/LP only): 1 main
controller (RCM3211) and up to 2 sub-controllers
(RCS3211).
u Additionally, the 32Q model (KM3211WHQNG/LP)
includes a built-in pump and a main controller, which
allows for programmed water re-circulation on a ring main
e.g. for peak usage times. The delivery time of hot water is
reduced as well as unnecessary water usage.
*Internal installations require flueing as per AS 5601 / NZ 5621.
Flue kits are available for 32 Series.
For more information, please see page 17.
32 Series – commercial applications2.1
Commercial
gas hot water systems
2
The 32Q model allows for programmed water re-circulation
on a ring main. The maximum length of the re-circulation pipe
is 60m.
Product diagram
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15
Professional Packs are specifically designed for
commercial use. They are suitable for
applications that require a large volume of hot
water for peak demand. All Bosch Professional
Packs come with the following components –
Bosch hot water system, Bosch-Everlast
stainless steel storage tank, built-in
thermostat, shroud, PTR valve and pump. They
are pre-assembled, ready to be installed and
will be shipped directly to site. This means an
easy installation and low set-up costs.
The 315 litre Bosch-Everlast stainless steel
storage tank included in Bosch Professional
Packs comes standard with 32mm ports.
Bosch-Everlast stainless steel storage tanks
can also be purchased separately. A 315 litre
model with 32 mm ports (part number: 315C2)
as well as a 315 litre model with 50mm ports
(part number: 315C250) is available. The
315C250 storage tank is not available as part
of a Bosch Professional Pack.
Models
C31526ELP C31526ENG C31532WHLP C31532WHNG
Gas Type LP NG LP NG
Tank Size (ltr) 315 315 315 315
System Size 26e 26e 32 32
Internal installation:
C31532WHLP and C31532WHNG may be installed internally
with appropriate flueing. Please consult AS 5601 or NZ 5621.
Professional Packs2.2
Bosch Professional Packs come in the following system-tank combinations:
Model C31532WHNG
(with shroud)
Model C31532WHNG
(without shroud; vent cap
KMVC100 as shown is a
required accessory for
external installations)

16
Product diagram
Manifold 2 to 6 units
Bosch 32 models (KM3211WHNG/LP) have the ability to be
linked in series (manifolded). For 2 units, the quick
connection cable (KMQC0703339) can be used to allow the
units to share the work load. 3 to 6 units can be used in
rotation with a fully electronic rotation manifold system
controller (KMSC201). The system controller allows the work
load to be shared evenly between the manifolded units.
* Note: When manifolding 2 or more Bosch 32 models, you
are required to install a main controller (RCM3211) for
electronic staging.
Manifolds can also be combined with Bosch-Everlast
stainless steel tanks (315 ltr storage capacity).
Bosch Commercial combination sizing guide
Bosch 32 Series manifolds can be combined with Bosch-
Everlast stainless steel tanks (for tank part numbers see
page 14). The table below shows some of the possible
burner-tank combinations and the approximate capacities the
manifolds can deliver in the 1st and 2nd hour at a 50°C
temperature rise.
Manifolding options2.3
There are many more
combinations than are
listed. Please refer to the
Bosch customer contact
centre (Australia: 1300 30
70 37; New Zealand: 0800
54 33 52) or visit www.
bosch.com.au to find your
local Bosch agent.
The Bosch 26e Highflow, along with being the flagship of the
domestic range of water heaters, can also be used in
commercial applications. One option is to hydraulically
manifold these units in conjunction with a Bosch-Everlast
storage tank.
System Tank size Number of
Bosch units
1st hour litres
at a 50°C rise
2nd hour litres
at a 50°C rise
Gas usage
(MJ/h)
26e 315 ltr 1 1095 780 200
26e 315 ltr 2 1875 1560 400
26e 315 ltr 3 2655 2340 600
26e 315 ltr 4 3435 3120 800
26e 315 ltr 5 4215 3900 1000
32 315 ltr 1 1275 960 250
32 315 ltr 2 2235 1920 500
32 315 ltr 3 3195 2880 750
32 315 ltr 4 4155 3840 1000
32 315 ltr 5 5115 4800 1250
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17
Flueing Accessories
* Vent cap KMVC100 required with horizontal flue kit FKH32LTR.
Cooler climates
For external HydroPower and Pilot range hot water systems
the Exogel valve is recommended in areas that drop to 0°C
for short periods. In areas prone to extended periods of frost
and sub-zero temperatures, only an internal HydroPower
All internal gas water heaters must be flued in
accordance with AS 5601 or NZ 5621. For the Bosch 32
Series there is a horizontal or vertical flue kit available
for internal installations.
The maximum flue length for a vertical flue with 1 elbow
is 13m.
Commercial flueing accessories2.4
Climate
COLD MODERATE TROPICAL
No. of
bathrooms Product Name Litres Litres Litres
1
HydroPower 16 10 or 13 10 or 13
Pilot 16 10 or 13 10 or 13
Electronic Highflow 17 17 17
2
HydroPower – 16 16
Pilot – 16 16
Electronic Highflow 21 or 26 17 or 21 or 26 17 or 21
2+ Electronic Highflow 26 26 26
3+ Commercial Series 32 32 32
Guide only, circumstances may vary. Please consult your
retailer for specialist advice in your area.
Sizing guide3
model, an internal or external 32 Series model or an external
Highflow model are suitable. The 32 Series and the Highflow
range come standard with Antifrost protection.
Vertical flue kit
FKV32LTR
u100mm gas cowl
u1.5m x 100mm diameter
gas flex (three pieces)
uFlue pipe adaptor (three
pieces)
uSupport struts (two
pieces)
u6mm x 3m condensation
hose
Horizontal flue kit
FKH32LTR
(requires vent cap
KMVC100)
u 100mm diameter
flexible flue, 5
meters long
u flue sleeve
u adjustable wall
penetration sleeve
(two pieces)
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18
u Select the water heater that best suits the customer‘s needs.
u Check 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 Check gas type required.
u Check 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 Position the water heater in compliance with AS 5601 /
NZ 5621, manufacturers instructions and local authority
guidelines.
u Keep hot water piping to a minimum. Consult AS 3500 /
NZ 3500 for pipe sizing.
u Mount 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 Highflow range and 32 Series: Electricity supply (VAC):
230-240, 50Hz (10 amp weatherproof power point
recommended within 500 mm of the unit).
u Consult 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.)
u Connection of the gas supply to the appliance must
be via an approved isolation valve at the unit.
u Refer to technical specifications for the correct gas
connection size.
u Purge and flush gas piping prior to connection to unit.
u Connection of cold water piping is via an approved
isolation valve.
u Flush cold water piping of debris prior to connection
to the unit.
u See technical specifications for cold and hot water
connection sizes to the unit.
u Install 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 After 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 Operate 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 Please refer to installation manuals for full commissioning
procedures.
u Confirm 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.
Quick installation tips4
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.

19
1.1
Installation diagram
The installation regulations provided in this quick reference guide are a guide
only. Please refer to the latest AS 5601/NZ 5621 edition and local authority
guidelines.
Natural draft
Bosch hot water systems with natural draft flue terminals
are: External and Internal HydroPower ranges as well as the
Pilot Ignition range.
P = Electricity meter or fuse box
W = Openable window
Shading indicates prohibited areas
for flue terminals
Fan assisted
Hot water systems with fan assisted flue terminals in the
Bosch product range are: Highflow range and Bosch 32 Series.
Installation regulations5
Minimum clearance of flue terminals5.1
T = flue terminal
I = Mechanical air inlet
M = Gas meter
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20
Installation diagram
Item
Minimum
Clearance (mm)
Natural Draft
Minimum
Clearance (mm)
Fan Assisted
a
Below eaves, balconies and other projections
Appliances up to 50 MJ/h input 300 200
Appliances over 50 MJ/h input 500 300
bFrom the ground, above a balcony or other surface* 300 300
cFrom a return wall or external corner* 500 300
dFrom a gas meter (M) 1000 1000
eFrom an electricity meter or fuse box (P) 500 500
fFrom a drain pipe or soil pipe 150 75
gHorizontally from any building structure or obstruction facing a
flue terminal 500 500
hFrom any other flue terminal, cowl, or combustion air intake* 500 300
jHorizontally from an opening window, door, non-mechanical air
inlet. Or other opening into a building with the exception of sub
floor ventilation
Appliances up to 150 MJ/h 500 300
Appliances over 150MJ/h input up to 200 MJ/h input 1500 300
Appliances over 200 MJ/h input up to 250 MJ/h input* 1500 500
Appliances over 250 MJ/h* 1500 1500
All fan-assisted flue applications, in the direction of discharge – 1500
kFrom a mechanical air inlet, including spa blower 1500 1000
nVertically below an openable window, non-mechanical air inlet, or
any other opening into a building with the exception of sub-floor
ventilation:
Space heaters up to 50 MJ/h 150 150
Other appliances up to 50 MJ/h 500 500
Appliances over 50 MJ/h and up to 150 MJ/h input 1000 1000
Appliances over 150 MJ/h input 1500 1500
Installation locations for internal continuous
flow gas hot water systems
5.2
Internal continuous flow gas hot water systems in
the Bosch product range are: Internal HydroPower
range, internal installations of the 32 Series
(external installations also possible).
Please note that appropriate flueing is required for
internal installations. Prohibited internal installation
locations for instantaneous water heaters are:
bedrooms, bathrooms, toilet rooms, or combined
living/sleeping rooms. Please refer to AS 5601/NZ
5621, installation instructions, and local authority
guidelines.
This diagram of installation locations serves as a
guide only. Please refer to AS 5601/NZ 5621 and local
authority guidelines.
* Unless appliance is certified for closer installation.
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