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
RBHF304WDA (New Zealand only)
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Brick opening
dimensions (mm)*
Height 980
Width 405
Depth 205
(if fully recessed)
*Minimum dimensions
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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