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Bosch WR11B series, Installation Manual And Operating Instructions

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Bosch WR11B series Installation Manual And Operating Instructions Download Page 6

6

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Technical Characteristics and Dimensions

6 720 648 592 (2011/06)

2.6

Special accessories

• Conversion kit from natural gas to butane/propane.

2.7

Dimensions

Fig. 1

1

Front cover

2

Hole for fixing 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 flue 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

Summary of Contents for WR11B series

Page 1: ... 18 B 6 720 648 592 2011 06 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 ...

Page 2: ...2 Batteries 10 3 3 Turning the heater on and off 10 3 4 Power adjustment 11 3 5 Temperature flow adjustment 11 3 6 Purge the appliance 11 3 7 Cleaning 11 4 Regulation 12 5 Installation must be carried out only by qualified technicians 13 5 1 Important information 13 5 2 Selection of the place of installation 13 5 3 Heater mounting 14 5 4 Water connection 14 5 5 Gas connection 14 5 6 Inlet exhaust ...

Page 3: ... valve and call a service technician B Do not use the appliance again until the service technician has declared that it is safe to do so Fitting modifications B The fitting and modification of the installation of the appliance must be carried out only by an authorized technician B The installation of the water heater may only be carried out by a registered installer and that such installations sha...

Page 4: ... installation when the installation is completed to your satisfaction B Note that your invoice is required in the event that you wish make a guarantee claim Important information for the installer B This appliance may only be installed by a LP gas installer registered with the Liquefied Petroleum Gas Association of Southern Africa B The appliance must be installed in accordance with the requiremen...

Page 5: ...bility of power adjustment and no permanent pilot flame 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 fibreglass reinforced polyamide 100 recyclable Automatic adjustment of the water flow by means of a device which ...

Page 6: ... 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 flue 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 ...

Page 7: ... Water valve 11 Adjusting screw for min water flow rate 12 Water flow regulator 13 Water filter 14 Cold water supply pipe 15 Diaphragm 16 Microswitch 17 Main gas valve 18 Regulating screw 19 Gas inlet 20 Gas filter 21 Battery compartment 22 Hot water pipe 23 Igniter unit 24 Led indicator for burner status 25 ON OFF switch 26 Led indicator for battery charge level 27 Servo valve 28 Output control 2...

Page 8: ...lifies its operation B To do so just turn on the switch ÆFig 6 After this procedure automatic ignition occurs whenever a hot water tap is opened First the pilot burner is lit and approximately four seconds afterwards the main burner The pilot burner flame is then extinguished after a short period of time This is a way of saving a great amount of energy as the pilot burner only operates for the min...

Page 9: ...utane Propane G30 kPa 2 8 2 8 2 8 Consumption Natural gas H G20 m3 h 2 2 2 77 3 5 LPG Butane Propane G30 Kg h 1 75 2 2 2 79 Number of injectors 12 14 18 Water data Maximum permissible pressure2 2 Considering the water dilution effect this value must not be exceeded pw psi 170 170 170 Temperature selector in fully clockwise position Temperature rise C 50 50 50 Flow range l min 2 5 5 2 0 7 2 0 8 8 M...

Page 10: ...tteries as domestic waste Take them to appropriate collecting places for recycling Do not insert flat batteries Only use the type of batteries indicated 3 3 Turning the heater on and off Turning on B Press the switch position Fig 6 Green light on Main burner on Fig 7 Open all water and gas blocking devices Purge the pipes CAUTION The front panel in the burner and pilot burner area may reach high t...

Page 11: ... the temperature to the minimum required value reduces energy consumption as well as the possibility of limescale deposits in the heat exchanger 3 6 Purge the appliance If there is a risk of freezing proceed as follows B Remove the retaining clip from threaded bushing ÆFig 11 pos 1 B Remove threaded bushing ÆFig 11 pos 2 from water valve B Empty the appliance of all water Fig 11 Purge 1 Retaining ...

Page 12: ...on 6 720 648 592 2011 06 4 Regulation Any local by laws and regulations pertaining to installation and use of gas heated appliances must be observed Please refer to the laws that should be attended in South Africa ...

Page 13: ...d over a heat source To avoid corrosion the combustion air must be free from harmful substances Examples of particularly corrosive substances halogenated hydrocarbons contained in solvents paints glues engine gases and various domestic detergents If necessary take adequate measures Respect the minimum installation clearances indicated in Fig 12 The heater must not be installed in locations where t...

Page 14: ... towards you and upwards release the front of the two lugs from the back B Fix the heater vertically using the provided screw hooks and plugs 5 4 Water connection It is advisable to purge the installation beforehand because the presence of dirt may reduce the flow and in extreme cases cause a blockage B Identify the cold water pipe ÆFig 13 item A and the hot water pipe ÆFig 13 item B so as to avoi...

Page 15: ...ding to the instructions in the relevant manual B Once connected the pipe should be inspected and the seal guaranteed 5 7 Startup B Open the water and gas flow valves and check that all connections are leak tight B Check the flue gas safety device is functioning correctly proceed as explained in 7 3 Combustion gas probe DANGER Make sure that all flue connections are tighten sealed B Failure to fol...

Page 16: ... shut off screw B Connect the pressure gauge to the measuring point for the burner pressure Fig 14 Pressure measurement points Maximum gas flow adjustment B Remove the screw seal ÆFig 15 B Turn on the heater with the power selector set to the left maximum position Fig 15 Maximum gas flow adjusting screw B Open various hot water taps B Using the adjusting screw regulate the pressure until obtaining...

Page 17: ...nal conversion kits are supplied with assembly instructions Natural gas H Butane Propane Injector code WR11 8708202113 1 10 8708202130 0 70 8708202124 1 20 8708202128 0 72 WR14 8708202113 1 10 8708202128 0 72 8708202116 1 25 8708202132 0 75 WR18 8708202115 1 15 8708202130 0 70 8708202116 1 25 8708202132 0 75 Connection pressure psi WR11 WR14 WR18 2 3 3 MAX psi WR11 1 27 2 8 3 5 WR14 1 2 2 8 3 5 WR...

Page 18: ...ease soot Remove the burner soak it in hot water with detergent and clean it thoroughly Water filter B Replace the water filter installed in the water valve entry Burner and pilot injector B Remove and clean the pilot burner B Remove and clean the pilot injector 7 2 Startup after maintenance work B Tighten all connections once more B Read chapter 3 Use and chapter 6 Adjustments 7 3 Flue gas safety...

Page 19: ...erse of the procedure set out in the table above Function check Flue gas safety device function check B Disconnect flue pipe B Replace with pipe about 50 cm long with sealed end B Fit pipe vertically B Start up appliance at rated output and set temperature control to maximum temperature Under those conditions the appliance should shut down after two minutes Remove temporary pipe and reconnect flue...

Page 20: ...ufficient gas supply Check reducer and if inadequate or malfunctioning replace it Check if the bottles butane freeze during operation and if so move them to a warmer place The burner turns off the heater is operating Temperature limiter has tripped Flue gas safety device has tripped Wait 10 minutes and restart the heater If the problem persists call a qualified technician Vent the area Wait 10 min...

Page 21: ...gy and materials for protecting the environment taking account of economic considerations Packaging We participate in the recycling programmes of the countries in which our products are sold to ensure optimum recycling All of our packaging materials are environmentally compatible and can be recycled Used appliances Used appliances contain valuable materials that should be recycled The various asse...

Page 22: ...22 Environment disposal 6 720 648 592 2011 06 Notes ...

Page 23: ...Environment disposal 23 6 720 648 592 2011 06 Notes ...

Page 24: ...B S H Home Appliances Private Bag X36 Randjespark Halfway House 1685 Visitors Fifteenth Road Randjespark Midrand Tel 011 265 7800 Fax 011 265 7817 www boschappliances co za 6720648592 ...

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