Need help?Do you have a question about the Bosch GWH 16-2 G Series and is the answer not in the manual?
Defines warning symbols and keywords indicating hazard severity.
Covers gas safety, combustion gases, assembly, maintenance, and flammable materials.
Provides an overview of the appliance and its testing standards.
Details the structure and meaning of the appliance's model code.
Lists all items included in the product packaging.
Explains the features and operational components of the gas heater.
Presents detailed physical dimensions and a diagram of the appliance.
Illustrates the internal workings and components of the heater.
Shows the electrical connections and components of the appliance.
Explains the automatic electronic ignition and operation sequence.
Details gas consumption, supply pressure, and water flow specifications.
Provides crucial installation guidelines and warnings for safe operation.
Specifies requirements for choosing a suitable installation location.
Details the procedure for physically mounting the heater unit.
Explains how to connect the water pipes to the appliance.
Describes the function and role of the hydrogenerator.
Explains the function of the pressure relief system.
Provides instructions and warnings for connecting the gas supply.
Outlines the procedure for checking connections and leaks after installation.
Explains the symbols and indicators on the digital display.
Lists pre-startup checks and essential information for initial operation.
Details the steps for operating the heater's power switch.
Guides on checking water flow and interpreting LED indicators.
Explains how to adjust gas settings for temperature control and energy saving.
Describes how to adjust water temperature and flow rate.
Provides methods for draining the heater in case of frost risk.
Details procedures for adjusting the gas inlet pressure.
Explains how to adjust burner pressure for maximum and minimum gas flow.
Outlines the process for converting the appliance to a different gas type.
Explains the function and maintenance of the flue gas safety device.
Provides a troubleshooting guide for common heater issues and their solutions.
This document provides comprehensive installation, operation, and maintenance instructions for Bosch Gas Water Heaters, specifically the GWH 10-2 G..., GWH 13-2 G..., and GWH 16-2 G... models. These continuous flow, internal gas water heaters are designed for wall-mounting and feature automatic electronic ignition for simplified operation.
The Bosch Gas Water Heater is designed to provide hot water on demand. Its core function relies on a hydrodynamic generator (HDG) located in the water circuit between the water valve and the heat exchanger. When water flows past the HDG's turbine blades, it rotates, transmitting movement to an electric generator. This generator then powers the heater's ignition unit, supplying approximately 3.0 VAC.
To activate the heater, the user simply turns on the switch. Automatic ignition occurs whenever a hot water tap is opened. Initially, a temporary pilot burner is lit. Approximately four seconds later, the main burner ignites, and the pilot burner flame is extinguished. This design is a key energy-saving feature, as the pilot burner only operates for the minimum necessary time to ignite the main burner.
The heater incorporates several safety devices to ensure reliable and safe operation. An ionisation probe continuously checks for accidental extinction of the burner flame. A flue gas safety device monitors the condition of flue gas evacuation and, in case of inadequate evacuation, automatically turns off the heater to prevent combustion gases from entering the room. An overtemperature switch prevents overheating of the heat exchanger by turning off the heater if the water temperature at the outlet exceeds 85 °C. Additionally, a pressure relief valve releases pressure from the system if it exceeds 1500 kPa.
The appliance is equipped with a gas flow adjustment mechanism that is proportional to the water flow, helping to maintain a constant water temperature. This feature contributes to user comfort and energy efficiency.
The Bosch Gas Water Heater offers user-friendly features for controlling water temperature and flow. The heater is designed for convenience, ready to operate by simply pressing a switch.
A digital display provides essential information to the user, including the current water temperature or an error code if a malfunction occurs. It also indicates when the heater is in operation (burner turned on) and displays temperature measurement units.
Users can adjust the water temperature and flow using dedicated selectors. Turning the temperature/volume selector anti-clockwise increases water flow and decreases water temperature, while turning it clockwise decreases flow and increases water temperature. This allows for fine-tuning of the hot water output to suit individual preferences and reduce energy consumption by regulating the temperature to the minimum required value.
The gas adjustment feature allows users to influence the water temperature. Lowering the water temperature requires less gas, while a higher water temperature requires more gas. This provides an additional layer of control over energy usage.
The heater also includes a switch with an integrated LED that serves as a low water pressure indicator. If the red LED starts flashing during operation, it signals a need to check the water flow, indicating a potential issue with the water supply.
Regular maintenance is crucial for ensuring the reliable and safe functioning of the Bosch Gas Water Heater, as well as for maintaining optimal gas consumption and environmental performance. Bosch recommends annual servicing by an authorised service agent.
The manual outlines specific procedures for commissioning and maintenance that must only be performed by a qualified technician. These include:
The manual explicitly states that maintenance information is contained in a service manual available to licensed technicians upon request from Bosch, emphasizing that only qualified personnel should perform these tasks. Failure to perform maintenance procedures can lead to appliance malfunction, errors, service calls, and loss of warranty. The user is also warned never to touch, turn off, modify, or replace the flue gas safety device.
General| Model | GWH 16-2 G Series |
|---|---|
| Brand | Bosch |
| Category | Water Heater |
| Energy Factor | 0.82 |
| Ignition Type | Electronic Ignition |
| Type | Tankless Gas Water Heater |
| Gas Type | Natural Gas |
| Maximum Input | 54, 600 BTU/h |
To Next Page