Table of Contents
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Installation Manual and Operating Instructions
Gas Instantaneous Water Heater
Safety instructions:
If you smell gas:
- Do not operate any electrical switches.
- Do not telephone from inside the danger area.
- Turn off the gas cock.
- Open windows and ventilate room.
- From outside, call the gas company and your approved
installer.
Do not use or store easily combustible materials in the vicinity
of the appliance.
WR8..P...
WR11..P...
With piezo ignition and double safety system
consisting of flue gas monitor and heat
exchanger temperature sensor.
Installation and servicing of the appliance may only be
carried out by an approved technician.
The appliance should be regularly serviced in order to ensure
that it remains in perfect and safe working order.
If there is a risk of freezing, the appliance must be switched
off and drained. If the appliance has not been drained during
a cold spell, when it is switched on again check that it
produces hot water. If problems occur, contact your installer
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Table of Contents
Related Manuals for Bosch WR8 series
Summary of Contents for Bosch WR8 series
- Page 1 Installation Manual and Operating Instructions Gas Instantaneous Water Heater WR8..P... WR11..P... With piezo ignition and double safety system consisting of flue gas monitor and heat exchanger temperature sensor. Safety instructions: Installation and servicing of the appliance may only be carried out by an approved technician. If you smell gas: The appliance should be regularly serviced in order to ensure - Do not operate any electrical switches.
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Page 2: Table Of Contents
Contents Technical Characteristics and Dimensions 2.5 Gas connection ..............5 2.6 Flue ..................6 1. 1 Category, Appliance Type and Approval Number ..2 2.7 Commissioning ..............6 1.2 General Description ............2 1.3 Explanation of Model Code ..........2 Operation and maintenance 1.4 Dimensions ................. -
Page 3: Dimensions
Dimensions 1. Front cover 2. Hole for fixing to wall 3. Observation window 4. Temperature control 5. Output control 6. Gas connection 7. Exhaust pipe union 8. Draught diverter with flue gas monitor 9. Heat exchanger 10. Automatic gas valve 11. -
Page 4: Technical Characteristics
Technical characteristics Technical Data Symbol Unit WR11 Rated max. heat output 11.8 19.2 Rated min. heat output Output (modulation range) 7.0 - 11.8 7.0 - 19.2 Rated max. heat input 13.5 21.8 Rated min. heat input Supply pressure LPG (butane/propane) G30/G31 mbar 28-30/37... -
Page 5: Preconditions For Installation
Preconditions for installation in extreme cases, could completely clog up the appliance. Mark hot water (fig.4, pos.B) and cold water pipes (fig.4, The appliance can only be sold in the countries mentioned pos.A) so as to prevent confusion. in the type plate. Connect pipe to automatic water valve using the connecting kit supplied. -
Page 6: Flue
Flue It is absolutely essential that all instantaneous water heaters are connected to a suitably dimensioned flue pipe by means of a gas-tight connection. The flue pipe should be made of galvanised iron, aluminium, stainless steel or fibre concrete. Fit as shown in Fig. 5. A flexible or rigid pipe should be used, fit it inside the flue socket. -
Page 7: Operation And Maintenance
Press in the slide control knob and subsequently press the complete function check. piezo button. Release the slide control after about 15 If components need to be replaced, use only genuine Bosch seconds, if the pilot flame does not stay alight, repeat the spare parts. -
Page 8: Converting To A Different Gas Type
* This work may only be carried out by an approved engineer. Converting to a different gas type Use only the genuine Bosch conversion kit. Conversion may only be carried out by an approved technician. Troubleshooting Installation, servicing and repairs may only be carried out by an approved engineer. - Page 9 6 720 607 884...
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Page 12: Operation
Operation Turn on all gas and water taps Purge air from pipes Ignition Depress slide control knob and hold it in Release the slide control knob after approximately 10 seconds Press the piezo igniter Repeat these steps if the flame does not stay alight Output Control output decrease output increase...