EasyManua.ls Logo

Bosch WR11 series - User Manual

Bosch WR11 series
12 pages
Print Icon
To Next Page IconTo Next Page
To Next Page IconTo Next Page
Loading...
6 720 607 884 (2009/05) GB
WR8..P...
WR11..P...
With piezo ignition and double safety system
consisting of flue gas monitor and heat
exchanger temperature sensor.
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.
Gas Instantaneous Water Heater
Installation Manual and Operating Instructions
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

Other manuals for Bosch WR11 series

Questions and Answers

  • L
    Lynn CastilloAug 15, 2025
    What to do if flame goes out on Bosch WR11 Water Heater?
    • C
      Casey MartinAug 15, 2025
      If the flame on your Bosch Water Heater goes out during operation, it could be that the flue gas safety device or the temperature limiter has tripped. To resolve this, ventilate the room, wait 10 minutes, and then restart the appliance. If the problem continues, it is recommended to call an approved technician.
  • S
    Stanley RodriguezAug 18, 2025
    Why is Bosch Water Heater water not hot enough and the flame is weak?
    • J
      John JohnsonAug 18, 2025
      If your Bosch Water Heater isn't producing hot enough water and the flame is weak, the gas supply dynamic pressure might be too low. Inspect the gas cylinder governor and replace it if it's incompatible or damaged. Also, check if the gas cylinder (butane) is freezing during operation and, if needed, move it to a warmer location.
  • O
    okaufmanAug 21, 2025
    What to do if the flame goes out on my Bosch WR11?
    • M
      moorejerryAug 21, 2025
      If the flame goes out while your Bosch Water Heater is running, it could be that the temperature limiter has tripped. Wait 10 minutes and then restart the appliance. If the issue continues, contact an approved technician. Alternatively, the flue gas safety device may have tripped. Ventilate the room, wait 10 minutes, and then restart the appliance. If the problem persists, call an approved technician.
  • D
    David RichAug 25, 2025
    How to adjust the temperature on a Bosch WR11?
    • K
      Kenneth SuttonAug 25, 2025
      If your Bosch Water Heater isn't providing hot enough water, make sure to check the position of the water temperature control and adjust it to achieve your desired hot water temperature.
  • T
    Tyler HolderAug 28, 2025
    How to fix reduced water flow rate in Bosch WR11?
    • U
      uspearsAug 28, 2025
      If you're experiencing a reduced water flow rate with your Bosch Water Heater, several factors could be the cause. It might be due to an inadequate inlet flow rate, so check and adjust it. There could be dirt in the water service cock or mixer unit, requiring a check and clean. The automatic water valve might be clogged, in which case you should clean the filter. Lastly, the heat exchanger could be clogged with scale, so clean and descale it as necessary.
  • J
    Jeffrey HarrisonAug 31, 2025
    How to make Bosch WR11 Water Heater water hotter?
    • J
      jenningsbruceAug 31, 2025
      If the water from your Bosch Water Heater is not hot enough, check the output selector position and adjust it according to your needs.
  • C
    Christine CobbSep 3, 2025
    Why is the water flow rate reduced in my Bosch Water Heater?
    • J
      john42Sep 4, 2025
      If your Bosch Water Heater has a reduced water flow rate, it could be due to several reasons. The inlet flow rate might be inadequate, so check and adjust it. There might be dirt in the water service cock or mixer unit, requiring a check and clean. The automatic water valve could be clogged, necessitating a filter cleaning. Lastly, the heat exchanger might be clogged with scale, so clean and descale it as necessary.
  • M
    Michelle SanchezSep 6, 2025
    What to do if my Bosch Water Heater is not hot enough and there is no flame?
    • S
      Shannon LynchSep 7, 2025
      If your Bosch Water Heater isn't heating the water and there's no flame, the gas supply dynamic pressure may be too low. Check the gas cylinder governor and replace it if it's incompatible or damaged. Also, check if the gas cylinder (butane) is freezing when the appliance is running; if so, move it to a warmer location.
  • C
    Cameron HaasSep 12, 2025
    Why is the pilot flame yellow on my Bosch WR11?
    • S
      Sonya DiazSep 12, 2025
      If the pilot flame of your Bosch Water Heater has a yellow flame and remains alight, and it takes several attempts to turn it on, the pilot burner may be blocked. Clean the pilot burner.

Summary

Safety Instructions

Technical Characteristics and Dimensions

Dimensions

Provides detailed measurements (A, B, C, D, E, F, G, H) for WR8/11 models.

Appliance Design

Illustrates the internal components of the water heater with numbered parts.

Technical Characteristics

Details technical data for WR8 and WR11 models including output, pressure, and consumption.

Preconditions for Installation

Regulations

Highlights legal requirements for gas appliance installation by competent persons.

Location Requirements

Specifies ventilation, temperature, and corrosion prevention for installation site.

Water and Gas Connections

Details on connecting water pipes, including advice on non-return valves and gas inlet precautions.

Flue Installation

Essential requirements for gas-tight flue pipe connection and material specifications.

Commissioning

Steps for initial startup including leak checks and flue gas safety device verification.

Operation and Maintenance

Appliance Function and Ignition

Explains the piezo ignition system and main burner operation for hot water supply.

Water Temperature Control

How to adjust water flow rate and temperature using the control knob.

Maintenance and Servicing

Recommends professional servicing, overhaul checks, and use of genuine spare parts.

Purging the Appliance (Freeze Risk)

Procedure to drain the appliance to prevent damage from freezing.

Flue Gas Safety Device

Details on the safety device's function, reset, and troubleshooting.

Troubleshooting Common Problems

Table of common issues like pilot flame, low hot water, and flow rate with solutions.

Bosch WR11 series Specifications

General IconGeneral
Fuel TypeNatural Gas or Propane
Gas Connection1/2" NPT
Water Connection1/2" NPT
IgnitionElectronic
Activation Flow Rate0.6 GPM
Power Supply120 VAC
TypeTankless

Related product manuals