Bosch Highflow 17e User manual

1
Installation/Operating Instructions
Invented for life
MODELS
Bosch 17e
Bosch 21e
Bosch 26e
(YS1770RA, YS2170RA & YS2670RA)
INSTALLATION MANUAL
This appliance must be installed in accordance with the manufacturer’s installation instructions, AS5601,
AS/NZS3500.4, AS3000 wiring regulations and all Local Building, Water and Gas fitting regulations.
To be installed and serviced only by an authorised person
This appliance is not suitable for use as a pool heater
The “authorised installing person” is responsible for :
1. Correct commissioning of this appliance.
2. Ensure unit performs to the specifications stated on the rating label.
3. Demonstrate operation of unit to customer before leaving.
4. Hand these instructions to customer.
Failure to install this appliance in accordance with these installation instructions may void warranty
SAR 8512-1
*SAR8512C*

2
Page Number
Introduction 3
Dimensions 4
Technical Data 5
Appliance Location 6
Component Details 7
Gas Connection 9
Cold Water Connection 9
Hot Water Connection 10
Electrical Connection 10
Pre-Set Temperature 10
Temperature Selector Pad Installation 11
Temperature Selector Pad Wiring 11
Temperature Control Operation 12
Commissioning and Testing 12
Temperature Setting 13
USER SAFETY INSTRUCTIONS 15
In Case Of Difficulties 15
Warranty Details 16
INDEX
Installation/Operating Instructions
Invented for life

3
This Bosch water heater is an external, electronically controlled gas water heater.
This Bosch appliance is supplied set to operate without temperature selector pads at
a constant 55°C outlet temperature. To set the appliance to a different temperature,
refer to page 13 for details.
Available as optional extras are Main, Bathroom or Sub temperature selector pads.
Only one Main controller and one Bathroom controller can be
connected to the appliance along with up to 2 x Sub-controllers.
The bathroom and sub temperature selector pads have a maximum temperature
setting of 50°C for safety. To ensure compliance with Australian Standard AS/NZS
3500.4, in the bathroom area, this may be achieved by using a Bosch appliance
limited to 50°C or using a Bosch appliance with a delivery temperature greater than
50°C and installed with a tempering valve (high performance). In New Zealand,
please refer to the New Zealand Building Code and all other applicable electrical,
gas fitting and plumbing codes.
Before installing this appliance, carefully check that all packing materials have been
removed and that the appliance is correct for the gas supply to which it is to be
connected
Installation/Operating Instructions
Invented for life

4
DIMENSIONS YS1770RA, YS2170RA
Installation/Operating Instructions
Invented for life
510〜512
48
44
520
487
542
10
10
120
60
84 133
97
40
37
109
40
57
31
1085
120
10
50
11170
178
255
308〜320
49
338
350
334
2542
L
Powercableintakinghole
Powercableintakinghole
(PSflameinstallationpich)
（Perspectivedrawingfromupperofappliance）
(PSflameinstallationpich)
Bottomofcase
Outlet-waterconnectionR3/4
Inlet-waterconnectionR3/4
GasconnectionR3/4
7-φ7.2hole
Installationholeofwall
(Installedwiththreeholes)
7-φ7.2hole
Installationholeofwall
(Installedwithtwoholes)
Gasconnection
Inlet-waterconnection
Waterdrainvalve(Waterfilter)
Outlet-waterconnection
PressurerelifevalveandWaterdrainvalve
Earthconnectionscrew
Bottomofcase
Air-inlet
Flueterminal
DIMENSIONS YS2670RA
590〜592
567
622
600
120
60
84
44
48
10
10 133
49
318〜320
268
10
50
120
40
97
40
109
85
178
37 338
47
10 11170
31
350
334
253
42 25
Powercableintakinghole
Powercableintakinghole
(PSflameinstallationpich)
(PSflameinstallationpich)
（Perspectivedrawingfromupperofappliance）
Air-inlet
(Installedwithtwoholes)
7-φ7.2hole
Installationholeofwall
PressurerelifevalveandWaterdrainvalve
Earthconnectionscrew
Inlet-waterconnection
Waterdrainvalve(Waterfilter)
Outlet-waterconnection
Bottomofcase
Gasconnection
Bottomofcase
7-φ7.2hole
Installationholeofwall
(Installedwiththreeholes)
Outlet-waterconnectionR3/4
Inlet-waterconnectionR3/4
Flueterminal
GasconnectionR3/4
YS1770RA
YS2170RA
178
214
L

5
Installation/Operating Instructions
Invented for life
TECHNICAL DATA
Nominal hourly gas consumption by proportional gas control:
17e
21e
26e
135 Mj/hr
170 Mj/hr
200 Mj/hr
135 Mj/hr
170 Mj/hr
200 Mj/hr
Natural Gas LP Gas
Test Point Pressure:
Maximum Inlet Water Pressure 1000 kPa
Input voltage single phase 50Hz AC240/230 Volt
Maximum output current 1 Amp
AGA Approval certificate number 7032
Inlet gas connection male thread 20mm
Cold water connection male thread 20mm
Hot water connection male thread 20mm
Relief valve pressure setting 1600 kPa
DATA PLATE
Fitted inside of cabinet
GAS TYPE
The gas type is nominated on a temporary label located on the front cover, and on the data
plate located inside of cabinet. The gas type is the gas on which this appliance is designed to
operate.
DO NOT OPERATE WITH ANY OTHER GAS TYPE.
WARNING LABELS
Located on the right side of the cabinet- PLEASE READ THESE LABELS CAREFULLY!
YS1770RA
YS2170RA
YS2670RA
.67
.69
.72
.26
.21
.19
Natural Gas
Max (kPa)
Model Natural Gas
Min (kPa)
.78
.91
.80
LP Gas
Max (kPa)
.23
.23
.22
LP Gas
Min (kPa)
Water heating capacity
Litres a minute raised 25°C
17e
17
21e
21
26e
26

6
Use as a guide only. Refer to AS5601 or local gas fitting rules for specific locations
T=Flue terminal
I=Mechanical air inlet
M=Gas meter
W=Window
Shaded area indicates
prohibited area
P=Electricity meter
or fuse box
f
c
n
k
k
j
jj
hhe
T
e
h
T
g
P
W
d
b
d
T
g
c
a
M
door
I

Ref Item Minimum Clearance
mm
Natural
draft
Fan
assisted
aBelow eaves,balconiesand other projections
Appliancesup to 50MJ/hinput 300 200
Appliancesover 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
dFroma gasmeter 1000 1000
eFrom an electricity meter or fuse box (P) 500 500
fFroma 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
jHorizontallyfrom an opening window, door, non-mechanicalair inlet. Or other opening
into a building with the exception of sub floor ventilation
Appliancesup to 150 MJ/h 500 300
Appliancesover 150MJ/hinput up to 200 MJ/h input 1500 300
Appliances over 250 MJ/h input 1500 1500
All fan assistedflue appliancesin the direction of discharge 1500
Appliances over 200 MJ/h input up to 250 MJ/h input 1500 500
kFrom a mechanicalair inlet, including spablower 1500 1000
nVerticallybelow an openablewindow, non-mechanicalair inlet, or any other opening into a
building with the exception of sub-floor ventilation:
Spaceheatersup to 50 MJ/h 150 150
Other appliancesup to 50 MJ/h 500 500
Appliancesover 50 MJ/h and up to 150 MJ/h input 1000 1000
Appliancesover 150 MJ/h input 1500 1500
POSITION FOR INSTALLATION
The heater must be installed by using a fixing method sufficient to hold the 21Kg weight
of unit (see the technical sheet for dimensions of mounting brackets and positions)
N.B.: On combustible surfaces e.g. weatherboards etc. it is not required to install a fire
proof back board.
APPLIANCE LOCATION
(1) This water heater is approved for outdoor installation only.
(2) Do not install this water heater with any modification or alteration.
(3) Do not install this water heater indoors or in an enclosed space .
WARNING: FLUE OUTLET MUST BE FREE FROM ANY COMBUSTIBLE MATERIAL.
CLEARANCES FOR FLUE TERMINAL (front of heater)
The location of the flue terminal must comply with the clearances shown on this page. If
you are unsure about clearances not indicated here, in general refer to AS5601, or your
local authority. In Western Australia refer to the SECWA rules and regulations.
Installation/Operating Instructions
Invented for life

7
Installation/Operating Instructions
Invented for life
COMPONENT DETAILS
Earth leakage breaker
Flue terminal
Antifrost heater
High-limit switch
Empty heating prevention device
Thermal fuse
Over-heat prevention device
Burner manifold
Remote Control Connections
Hot-water temperature change connector
Ignition plug
Flame rod
Flame failure safety device
Gas solenoid valve set
Printed circuit board
Water flow rate adjusting valve
Gas connection
Outlet water connection
Power cable
Inlet water connection
•YS1770RA, YS2170RA

8
Installation/Operating Instructions
Invented for life
Hot-water temperature change connector
Printed circuit board
Gas solenoid valve set
Ignition plug
Remote Control Connections
Burner manifold
Thermal fuse
Flue terminal
Antifrost heater
High-limit switch
Earth leakage breaker
Water flow rate adjusting valve
Flame rod
Inlet water connection
Power cable
Outlet water connection
Gas connection
Controller
Remote
Empty heating prevention device
Over-heat prevention device
Flame failure safety device
•YS2670RA

9
Installation/Operating Instructions
Invented for life
GAS CONNECTION
(1) Fit a union to the water heater gas inlet for easy connection and removal. The
thread diameter is 20 mm.
THIS DOES NOT INDICATE THE SIZE OF THE GAS SUPPLY.
(2) Fit an AGA / NZGA approved isolating gas cock in the supply line adjacent to
the water heater gas connection.
(3) Ensure that the supply pipe and the gas pressure regulator (LPG or Natural
Gas) has sufficient flow capacity for this and other appliances connected to the
fitting line.
(4) For LPG appliances ensure that gas cylinders are of sufficient size. The water
heater alone will require 2 x 45 Kg capacity cylinders.
(5) Before connecting the appliance to the gas service, purge any debris or air from
the gas service.
(6) Check all joints for leaks with an approved leak tester after connection.
Ensure that the gas pipe size is correct. If undersized the appliance will not
operate correctly
SERVICE CALLS ARE CHARGEABLE FOR UNITS WITH INCORRECT PIPE
SIZES OR BLOCKED GAS OR WATER FILTERS.
COLD WATER CONNECTION TO WATER HEATER
Refer to technical sheet for position of connections. The WATER INLET connection is
20 mm 3/4" BSP and requires a union to allow for removal of the water heater. Pipe
sizing from the cold water supply should be sized according to local BY LAWS for water
supply.
If sludge or foreign matter is present in the water supply it is recommended that a
separate filter/strainer be fitted to the cold water supply line.
A solar transfer valve must be fitted with all solar applications using the
Bosch Highflow range. Solar systems fitted without a solar transfer valve will
void all Bosch Warranty
ISOLATING GATE VALVE
A GATE VALVE OR BALL VALVE must be used on the cold water inlet to the water
heater. THIS REQUIREMENT IS AN AUSTRALIA WIDE REQUIREMENT UNDER
THE NATIONAL PLUMBING CODE.
STOP TAPS OR COMBINATION STOP TAPS AND NON-RETURN VALVES ARE
NOT TO BE USED.
N.B. NO PRESSURE REDUCTION VALVE IS REQUIRED UNLESS THE WATER
PRESSURE EXCEEDS 1000 kPa
Refer to AS 5601 Installation Code or NZ installation code for pipe sizing details.
For your assistance we have included the following pipe sizing from AS 5601.
FOR COPPER TUBE USING NATURAL GAS
13 mm
18 mm
20 mm
25 mm
NOMINAL PIPE
SIZE IN MM
4
4
4
4
LENGTH OF STRAIGHT
IN METRES
43
82.2
142
313
HOURLY RATE.
RATE IN Mj/H

10
HOT WATER CONNECTION TO WATER HEATER.
Refer to Technical Sheet for position of connection. The outlet connection is 18 mm (3/4"
BSP) MALE thread, and requires an isolating union to allow for removal of the unit.
Keep the pipe lengths to a minimum, and make sure that the pipework is well insulated as
correct performance of the appliance is dependent on properly insulated pipework.
DO NOT FIT ANY VALVES OR RESTRICTORS TO THE OUTLET OF THE WATER
HEATER.
DO NOT FIT ANY OBSTRUCTION TO THE PRESSURE RELIEF LOCATED ON THE
HOT WATER OUTLET CONNECTION.
After purging the air from the system using the hot water supply taps, remove the water inlet
strainer located on the cold water supply inlet connection. Remove any debris from the filter
and replace. When replacing the filter, do not over-tighten the “O” ring seal.
ELECTRICAL CONNECTION
The appliance is equipped with a 1.7 metre cable with a three pinned earthed plug
to be connected to a 240V, 50Hz supply. The electrical rating of the appliance is
0.4 Amps
The appliance requires a 240V in Australia and 230V in New Zealand, 50Hz
weatherproof plug installed in a protected position adjacent to the appliance.
IMPORTANT: The appliance should always be disconnected from the power
supply before any maintenance is carried out. If the power cord is damaged and
requires replacement, use only an original spare part available from the manufacturer.
PRE-SET TEMPERATURE
The Bosch water heaters are factory pre-set to operate at 55°C (or 50°C on 50
degree model) without temperature selector pads. The pre-set temperatures can be
altered to 60°C or 75°C, (or 42°C on 50 degree limited unit) by changing the setting
of the CPU or by using the temperature bridges supplied. Refer to page 13 for
details.
The appliance can also be fitted with temperature selector pads, available as an
accessory item. When fitted, the hot water will be delivered at the temperature
displayed on the selector pad.
There are two versions of remote controls available, the 66 series which has bath fill
alarm and the 67 series which has bath fill stop.
The two different series must never be connected to the same water heater.
The Bathroom controller cannot be used as a sole controller.
There is a Main, Bathroom and Ensuite control available in each series, never
connect more than one of each control type to the water heater (except an extra sub
controller as the fourth controller.)
Only one of each type can be connected to the appliance.
Installation/Operating Instructions
Invented for life
Main controller YPRM67XB YPRM66XB Max temperature 75° C #
Bathroom controller YPRS67XB YPRS66XB Max temperature 50°C
Ensuite controller YPRP62XB YPRP62XB Max temperature 50°C
67 series (Bathstop) 66 series (Bathfill)
# MAXIMUM TEMPERATURE IS CONTROLLED BY THE MAXIMUM DEFAULT
TEMPERATURE SET IN THE WATER HEATER

11
Installation/Operating Instructions
Invented for life
TEMPERATURE SELECTOR PAD INSTALLATION DETAILS
Main, Bathroom & Sub Control
Select a suitable flat, dry location away from direct sunlight.(Direct sunlight could
make it difficult to see display)
Cut an opening in wall through center of where the remote control is to be installed,
pull cable from wall cavity through opening. Attach cable to control. Remove cover
from remote control, locate control so that the wiring is not caught between the wall
and the remote control.
Secure control to wall using the screws provided and refit front cover.
Ensure that sufficient cable length is left to remove control if necessary.
TEMPERATURE SELECTOR PAD WIRING DETAILS
1Remove the front cover of the water heater and locate the PCB on the right hand
side of the cabinet.
2Locate the two control terminals on the PCB.
(Please be aware that all controller terminals connect back to the same two
points on the PCB)
3Connect one end of the cable to the back of the controller using the terminal
points provided. Run the cable from each controller back to the hot water unit.
Push the cable up through the electrical cord hole located at the base of the unit.
4Connect the other end of the cable to the terminals on the PCB.
5Locate and secure cable to cable support bracket inside unit.
6Replace the appliance front cover, attach the earth wire and connect the power
plug to 240V in Australia and 230V in New Zealand supply.
RemoteControlConnections

12
Installation/Operating Instructions
Invented for life
TEMPERATURE CONTROL OPERATION
Tu rn the main temperature selector ON by pressing the Operation switch ON, the
control will display 40°C. Adjust the setting control switch if a different temperature is
required.
To transfer operation to the bathroom or sub control press the priority switch on the
bathroom or sub control and adjust the temperature as required.
The appliance can also be switched on at any of the selectors by pressing the on
button
Priority can be cancelled at the main control by switching OFF & ON (Except if water
running)
COMMISSIONING AND TESTING
After completing the installation of the unit, connect manometer to gas inlet test
point, turn on the water, power and gas supplies to the unit. Confirm the water
heater delivers the temperature the consumer requires. With the hot water running,
confirm correct gas inlet pressure and remove manometer. Retighten test point and
soap test. Test operation of the appliance, explain operation to consumer & hand
over these installation instructions. Please leave your contact details with the
consumer.
BURNER PRESSURE ADJUSTMENT
No adjustment should be necessary providing the gas inlet pressure is correct.
Burner pressure adjustment is necessary when converting to a different gas type or
replacing the PCB. Refer to service manual for details.
N.B. The combustion fan continues to operate for approximately 7 minutes after
the unit is turned off. This is normal, not a fault.

13
Installation/Operating Instructions
Invented for life
SETTING THE TEMPERATURE
USE BRIDGES PROVIDED
Use the bridges provided to change the temperature as indicated in the table….
Remote controller less
Step 1 : Locate bridges attached to the inside of the front cover
Unit
YS1770RA
YS2170RA
YS2670RA
Factory
Setting
55°C
Bridge B
60°C
YS1770RA5
YS2170RA5
YS2670RA5
50°C 42°C
Bridge A
75°C
50°C
Connected remote controller
Unit
YS1770RA
YS2170RA
YS2670RA
Factory
Setting
37-55°C
Bridge B
37-60°C
37-50°C 37-50°C
Bridge A
37-75°C
37-50°C
Remote
controller
YPRM66XB
YPRS66XB
37-55°C 37-60°C37-75°CYPRM67XB
37-50°C 37-50°C37-50°CYPRS67XB
37-50°C 37-50°C37-50°CYPRP62XB
37-50°C 37-42°C
37-50°C 37-42°C
37-50°C
37-50°C
YPRM66XB
YPRS66XB
37-50°C 37-42°C37-50°CYPRM67XB
37-50°C 37-42°C37-50°CYPRS67XB
37-50°C 37-42°C37-50°CYPRP62XB
YS1770RA5
YS2170RA5
YS2670RA5
B
A
B
A
YS1770RA
YS2170RA
YS2670RA
Into Bridge A and Bridge B

14
Installation/Operating Instructions
Invented for life
Step 2: Turn off power to unit.
Step 3: Insert bridge into plastic clip between the controller terminals
Step 4: Turn power back on
Unit is now set as per the table on the previous page.
PCB
ControllerSwitch
Modulation
Adjust
Setting
Remote
A
B

15
Installation/Operating Instructions
Invented for life
USER SAFETY INSTRUCTIONS
PLEASE CAREFULLY READ THIS USER INSTRUCTION BEFORE USE.
You have selected the Bosch Electronic computer controlled hot water unit. The
following instructions will assist you to obtain the best performance from your Bosch
water heater
SAFETY
1. Always check water temperature by hand before entering the
shower or bath. The temperature may have been changed.
2. Do not touch cover or flue outlet when the Bosch water heater is
in operation.
3. Keep flammable materials, trees, shrubs etc. away from the
Bosch water heater
4. Water flow needs to be more than 2.5L/min. to operate these
Bosch Water Heaters. Hot water temperature may vary at low
water flows, or the Water Heater may go out without warning.
5W
arning - If the appliance does not operate, burns with yellow
flame, leaks water or a gas smell is evident, turn off and contact
the local gas authority, the manufacturer or an authorized
service person.
IN CASE OF DIFFICULTIES
If the Bosch water heater ceases to operate, please check that the electricity supply
is available. (Check for display of temperature at control pad or plug in a portable
appliance.) Also check that the gas supply is turned on.
If a fault develops there are no user adjustments or serviceable components
contained in this appliance. Please contact an authorized service person.
SERVICING AND MAINTENANCE
These gas water systems should be serviced at intervals not exceeding two years in
domestic applications and in commercial applications intervals not exceeding one
year.
For information on how to locate service and parts please phone [phone].

16
Warranty Details For Models Bosch 17e, 21e & 26e
Your Bosch Hot Water Unit is guaranteed as follows:
For appliances used in domestic applications, ie. normal hot water drawn from household outlets,
the warranty period is three (3) years parts and labour. The heat exchanger is covered for a period of ten
(10) years (part only, for the original supplied with the appliance, not warranty replacements). Purchased
spare parts are guaranteed for 12 months, replacement only.
For appliances used in commercial applications, the warranty period is twelve (12) months parts
and labour including the heat exchanger.
The warranty period commences from the purchase date. Claims for warranty will only be accepted upon
suitable proof of purchase submitted to Robert Bosch (Australia) Pty. Ltd. or an approved Bosch Service
Agent authorized to carry out warranty repairs.
PURCHASER'S STATUTORY RIGHTS
The warranty terms set out below do not exclude any conditions or warranties which may be mandatorily
implied by law, and your attention is drawn to the provisions of the Trade Practices Act, 1974, and State
legislation which confers certain rights upon consumers. The ROBERT BOSCH (AUSTRALIA) PTY. LTD.
Warranty supplements these.
EXTRACT OF TERMS OF DELIVERY AND SALE:
Warranty of products marketed by Robert Bosch (Australia) Pty. Ltd. herein referred to as RBAU.
a) RBAU warrants products marketed by it as free from faults and defects and having the specified
qualities according to the respective state of technology. Notwithstanding that the products may have been
sold by description or sample the products shall be accepted by the Buyer even though alterations in
design or construction have been generally introduced between the date of contract and the delivery of the
products.
b) The warranty shall be limited to the replacement or repair at the option of RBAU of any defective
products and of such parts of RBAU's products as have been damaged in consequence of the defect
despite proper treatment. Parts replaced will not be returned.
c) I) Repairs and maintenance shall not extend the warranty period of the appliance.
ii) If the product is located outside of the service agent's area, the consumer shall be responsible
for the service agent's traveling costs, and if necessary the expenses of freight, packing and charges of a
similar nature.
Without limiting the generality of these terms of delivery this warranty shall not apply to products sold in the
following cases :---
i) if the products sold are repaired or altered by any third party without RBAU's consent.
ii) where parts not manufactured or sold by RBAU are used in and replacement or repair.
iii) if products are not used with proper care and for the purpose for which they are sold and in
accordance with any specified instruction for use.
iv) if changes occur in the condition or operational qualities of the products due to incorrect storage or
mounting or due to climatic or other influences.
v) in respect of faulty construction or defects due to the use of unsuitable materials if such method of
construction or use of material has been specified by the Buyer.
vi) in respect of surface coating and glass damage.
vii) in respect of the replacement of parts when such replacements are part of the normal
maintenance, service or normal wear and tear.
No servant or authorised service agent has authority to add to or alter the terms of this warranty.
PLEASE NOTE:- If a service call is requested and it is found that it is not a manufacturing fault, you
may be charged for the call even during the warranty period.
ROBERT BOSCH (AUSTRALIA) PTY. LTD. (Incorporated in Victoria) Phone [phone].
Vic. Cnr. Centre Road & McNaughton Roads, Clayton, Vic. 3168. Ph: 03 9541 5555
N.Z. Ph: 0800 4 BOSCH or Ph: 08 543 352
www.bosch.com.au www.bosch.co.nz