Bosch WR 11 B, WR 14 B, WR 18 B Installation Manual And Operating Instructions
Installation Manual and Operating Instructions
Gas Instantaneous Water Heater
WR 11/14/18 .B..
6720648592 (2014/05) ZA
Read installation manual prior to installation of this unit!
Read user manual before putting this unit in operation!
Observe the warnings in the manuals!
The installation room must fulfill the ventilation requirements!
Installation by an authorised person only!
6720648592 (2014/05)
2 | Table of contents
Table of contents
1 Key to symbols and safety instructions . . . . . . . . . . 3
1.1 Key to symbols . . . . . . . . . . . . . . . . . . . . . . . 3
1.2 Safety Instructions . . . . . . . . . . . . . . . . . . . . 3
2 Technical Characteristics and Dimensions . . . . . . . 5
2.1 Declaration of conformity with relevant
EEC regulations . . . . . . . . . . . . . . . . . . . . . . .5
2.2 Explanation of Model Code . . . . . . . . . . . . . . 5
2.3 Accessories (Included with Appliance) . . . . 5
2.4 Description of the heater . . . . . . . . . . . . . . . 5
2.5 Type overview . . . . . . . . . . . . . . . . . . . . . . . . 5
2.6 Special accessories . . . . . . . . . . . . . . . . . . . . 5
2.7 Dimensions . . . . . . . . . . . . . . . . .
. . . . . . . . . 6
2.8 Electrical diagram . . . . . . . . . . . . . . . . . . . . . 7
2.9 Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.10 Technical characteristics . . . . . . . . . . . . . . . 8
3 Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.1 Before starting up the heater . . . . . . . . . . . . 9
3.2 Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.3 Turning the heater on and o . . . . . . . . . . . . 9
3.4 Power adjustment . . . . . . . . . . . . . . . . . . . . 10
3.5 Temperature/ow adjustment . . . . . . . . . . 10
3.6 Purge the appliance . . . . . . . . . . . . . . . . . .
10
3.7 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4 Regulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5 Installation (must be carried out only by
qualied technicians) . . . . . . . . . . . . . . . . . . . . . . . 11
5.1 Important information . . . . . . . . . . . . . . . . . 11
5.2 Selection of the place of installation . . . . . 11
5.3 Heater mounting . . . . . . . . . . . . . . . . . . . . . 12
5.4 Water connection . . . . . . . . . . . . . . . . . . . . 12
5.5 Gas connection . . . . . . . . . . . . . . . . . . . . . . 13
5.6 Inlet/exhaust pipe installation . . . . . . . . . . 13
5.7
Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6 Adjustments (must be carried out only by
qualied technicians) . . . . . . . . . . . . . . . . . . . . . . . 13
6.1 Factory regulations . . . . . . . . . . . . . . . . . . . 13
6.2 Pressure adjustment . . . . . . . . . . . . . . . . . . 14
6.3 Conversion to a dierent type of gas . . . . . 15
7 Maintenance (must be carried out only by
qualied technicians) . . . . . . . . . . . . . . . . . . . . . . . .16
7.1 Periodic maintenance work . . . . . . . . . . . . 16
7.2 Startup after maintenance work . . . . . . . . 16
7.3 Flue gas safety device . . . . . . . . . . . . . . . . . 17
8 Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
9 Environment / disposal . . . . . . . . . . . . . . . . . . . . . . . 19
6720648592 (2014/05)
Key to symbols and safety instructions | 3
1 Key to symbols and safety instructions
1.1 Key to symbols
Warnings
The following keywords are dened and can be used in this
document:
• NOTICE indicates a situation that could result in damage to
property or equipment.
• CAUTION indicates a situation that could result in minor to
medium injury.
• WARNING indicates a situation that could result in severe
injury or death.
• DANGER indicates a situation that will result in severe
injury or death.
Important information
Additional symbols
1.2 Safety Instructions
If there is a smell of gas:
Close the gas valve.
Open windows.
Do not operate any electrical appliances or switches (on/
o).
Extinguish any naked ames.
Phone the gas company or an authorized technician from a
safe distance.
If there is a smell of burnt gases:
Disconnect the appliance.
Ope
n doors and windows.
Inform an installation company.
Burn-back (re in burner tube or chamber)
In the event of a burn-back, where the ame burns back to
the injector, immediately turn o the gas supply at the
control valve on the panel.
After ensuring the ame is extinguished, wait for one
minute and re-light the appliance in the normal manner.
Should the appliance again burn back, close the control
valve and call a service technician.
Do not use the appliance again until the service technician
has declared that it is safe to do so.
Fitting, modications
The tting and modication of the installation of the
appliance must be carried out only by an authorized
technician.
The installation of the water heater may only be carried out
by a registered installer and that such installations shall
comply with the requirements of SANS 10087-1.
The pipes carrying burnt gases must not be modied.
Do not close or reduce air circulation holes.
Maintenance
We reccomend to have the system regularly serviced in
order to ensure that it functions reliably and safely.
The installer is responsible for the safety and
environmental compatibility of the installation.
The appliance should be serviced annually.
Only original spare parts must be used.
Explosive and inammable materials
Inammable materials (paper, sol
vents, ink, etc.) should
not be stored near the appliance.
Combustion air and ambient air
To avoid corrosion, combustion air and ambient air should
be free of aggressive substances (for example halogenated
hydrocarbons containing chlorine and uoride
composites).
Warnings in this document are identied by
a warning triangle printed against a grey
background.
Keywords at the start of a warning indicate
the type and seriousness of the ensuing risk
if measures to prevent the risk are not taken.
This symbol indicates important information
where there is no risk to people or property.
Symbol Explanation
Step in an action sequence
Cross-reference to another part of the document
• List entry
– List entry (second level)
Table 1
6720648592 (2014/05)
4 | Key to symbols and safety instructions
Important information for the user
This appliance may only be installed by a registered LP Gas
installer.
All registered installers are issued with a card carrying their
registration number.
Ask to be shown the card before allowing the installation
work to commence and make a note of the Installer QCC
number. Upon completion of the installation, the installer is
required to explain the operational details of the appliance
together with the safety instructions. You will be asked to
sign acceptance of the installation and be provided with a
completion certicate. You should only sign for acceptance
of the installation when the installation is completed to your
satisfaction.Note
that your invoice is required in the event
that you wish make a guarantee claim.
Important information for the installer
This appliance may only be installed by a LP gas installer
registered with the Liqueed Petroleum Gas Association of
Southern Africa.
The appliance must be installed in accordance with the
requirements of SANS 10087-1 and any re department
regulations and/or local by laws applicable to the area. If in
doubt check with the relevant authority before undertaking
the installation.
Upon completion of the installation you are required to fully
explain and demonstrate to the user the operational details
and safety practices applicable to the appliance and the
installation.
Client information
Inform the client about the function and operatio
n of the
appliance.
Caution clients against performing modications or repairs
themselves.
Risk of damage due to operator error
Operator errors can result in injury and damage to property.
Ensure that children never operate this appliance
unsupervised or play with it.
Ensure that only personnel who can operate this appliance
correctly have access to it.
6720648592 (2014/05)
Technical Characteristics and Dimensions | 5
2 Technical Characteristics and Dimensions
2.1 Declaration of conformity with relevant EEC
regulations
This appliance fullls European directive requirements 2009/
142/EC, 2006/95/EC, 2004/108/EC and corresponds to the
specications described in the corresponding EEC certicate
of proof.
2.2 Explanation of Model Code
[W] Gas Water Heater
[R] Proportional power adjustment
[11] Capacity (l/min)
[B] Electronic ignition powered by 1.5 V batteries
[23] Indicator number of natural gas H
[31] Indicator number of LPG
[S...] Country code
The code number indicates the gas group according to EN437:
2.3 Accessories (Included with Appliance)
• Gas water heater,
• Attachment elements,
• Installation accessories,
• Two 1.5 V batteries type R
• Heater docu
mentation.
2.4 Description of the heater
Operating convenience, as the heater is ready to operate by
simply pressing a switch.
• Heater for wall-mounting,
• Ignition by electronic device triggered when the water valve
opens,
• Great savings in comparison with conventional heaters,
due to the possibility of power adjustment and no
permanent pilot ame,
• Natural gas/LPG burner,
• Semi-permanent pilot burner which only functions during
the period between the opening of the water valve and the
ignition of the main burner,
• Heat exchanger in copper without tin/lead covering,
• Water valve in breglass-reinforced polyamide, 100%
recyclable,
• Automatic adjustment of the water ow by means of a
device which permits a constant ow to be maintained in
spite of
variable pressure supplies,
• Gas ow adjustment proportional to the water ow to
maintain a constant high temperature.
• Safety devices:
– Ionisation probe to check for accidental extinction of
the burner ame,
– Flue gas safety device which turns o the heater in case
of inadequate combusted gas evacuation conditions,
– Temperature limiter which prevents overheating of the
heat exchanger.
2.5 Type overview
The type plate is located at the bottom left of the appliance.
There you will nd details of appliance output, model number,
approval data and the serial number.
2.6 Special accessories
• Conversion kit from natural gas to butane/propane.
Model WR 11/14/18 B...
Category II
2H3+
Type Type B
Table 2
W R 11 B 23
31
S....
W R 14 B 23
31
S....
W R 18 B 23
31
S....
Table 3
Identication
Code
Wobbe Index (Ws)
(15 °C)
Gas type
23 12,7-15,2 kWh/m3Natural Gas - Group H
31 20,2-21,3 kWh/m3LPG - Group B/P
Table 4
6720648592 (2014/05)
6 | Technical Characteristics and Dimensions
2.7 Dimensions
Fig. 1
[1] Front cover
[2] Hole for xing to wall
[3] Temperature control
[4] Led indicator for battery charge level
[5] ON/OFF switch
[6] Led indicator for burner status
[7] Output control
[8] Gas connection
[9] Flue socket
[10] Draught diverter with ue gas monitor
[11] Heat exchanger
[12] Automatic gas valve
[13] Igniter unit
[14] Battery compartment
Dimensions (mm) A B C D E F G
H (Ø)
Natural
gas
LPG
WR11B 310 580 228 112,5 463 60 25 1/2” 1/2”
WR14B 350 655 228 132,5 510 95 30 1/2” 1/2”
WR18B 425 655 334 132,5 540 65 30 1/2” 1/2”
Table 5 Dimensions
Loading...