Bosch Highflow 17e - User Manual

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Installation Manual18 pages

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Summary

Bosch Continuous Flow Gas Hot Water Systems

1.1 Range Overview

Overview of Bosch's continuous flow gas hot water systems, highlighting their key features.

1.2.1 Electronic Gas Hot Water Systems

Detailed technical specifications for Bosch's electronic gas hot water systems, including Highflow.

1.2.2 HydroPower Gas Hot Water Systems

Technical specifications for Bosch HydroPower gas hot water systems, covering external and internal models.

1.2.3 Pilot Gas Hot Water Systems

Technical specifications for Bosch Pilot gas hot water systems, detailing models and features.

Commercial Gas Hot Water Systems

2.1 32 Series - Commercial Applications

Details on the Bosch 32 Series, its benefits and applications in commercial settings.

2.2 Professional Packs

Information on Bosch Professional Packs, pre-assembled systems for commercial applications.

2.3 Manifolding Options

Details on manifolding options for Bosch 32 Series and 26e Highflow units.

2.4 Commercial Flueing Accessories

Overview of flueing accessories for commercial internal gas water heaters.

Installation Regulations

5.1 Minimum Clearance of Flue Terminals

Minimum clearance requirements for flue terminals based on natural draft and fan assistance.

5.2 Installation Locations for Internal Continuous Flow Gas Hot Water Systems

Guidelines on suitable and prohibited installation locations for internal hot water systems.

Temperature Controllers for Highflow and 32 Series

6.1 Highflow Temperature Controllers

Information on Standard and Premium temperature controllers for Highflow models.

6.2 32 Series Controllers

Details on temperature controllers for Bosch 32 Series models, including circulation mode.

Frequently Asked Questions (FAQs)

Contact

8.1 Bosch Thermotechnology Australia

Contact details for Bosch Thermotechnology in Australia, including hotline and mailing address.

8.2 Bosch Thermotechnology New Zealand

Contact details for Bosch Thermotechnology in New Zealand, including hotline and mailing address.

8.3 For Your Own Records

Section for users to record their Bosch sales representative and other contact details.

Summary

Bosch Continuous Flow Gas Hot Water Systems

1.1 Range Overview

Overview of Bosch's continuous flow gas hot water systems, highlighting their key features.

1.2.1 Electronic Gas Hot Water Systems

Detailed technical specifications for Bosch's electronic gas hot water systems, including Highflow.

1.2.2 HydroPower Gas Hot Water Systems

Technical specifications for Bosch HydroPower gas hot water systems, covering external and internal models.

1.2.3 Pilot Gas Hot Water Systems

Technical specifications for Bosch Pilot gas hot water systems, detailing models and features.

Commercial Gas Hot Water Systems

2.1 32 Series - Commercial Applications

Details on the Bosch 32 Series, its benefits and applications in commercial settings.

2.2 Professional Packs

Information on Bosch Professional Packs, pre-assembled systems for commercial applications.

2.3 Manifolding Options

Details on manifolding options for Bosch 32 Series and 26e Highflow units.

2.4 Commercial Flueing Accessories

Overview of flueing accessories for commercial internal gas water heaters.

Installation Regulations

5.1 Minimum Clearance of Flue Terminals

Minimum clearance requirements for flue terminals based on natural draft and fan assistance.

5.2 Installation Locations for Internal Continuous Flow Gas Hot Water Systems

Guidelines on suitable and prohibited installation locations for internal hot water systems.

Temperature Controllers for Highflow and 32 Series

6.1 Highflow Temperature Controllers

Information on Standard and Premium temperature controllers for Highflow models.

6.2 32 Series Controllers

Details on temperature controllers for Bosch 32 Series models, including circulation mode.

Frequently Asked Questions (FAQs)

Contact

8.1 Bosch Thermotechnology Australia

Contact details for Bosch Thermotechnology in Australia, including hotline and mailing address.

8.2 Bosch Thermotechnology New Zealand

Contact details for Bosch Thermotechnology in New Zealand, including hotline and mailing address.

8.3 For Your Own Records

Section for users to record their Bosch sales representative and other contact details.

This Quick Reference Guide provides comprehensive information on Bosch Gas Hot Water Systems, designed for continuous flow and on-demand heating. These systems are wall-hung, compact, and easy to install, offering a modern alternative to conventional storage systems. The guide is tailored for specifiers, tradespersons, architects, and retail staff involved in the selection, sizing, and installation of these systems.

Function Description

Bosch Gas Hot Water Systems are continuous flow water heaters, meaning they only heat water when it is needed, rather than storing and continuously heating a large volume. This on-demand heating approach contributes to energy efficiency by minimizing standby heat loss. The systems are designed to deliver a consistent supply of hot water at a desired temperature, catering to various domestic and commercial needs.

The product range includes several series, each with distinct functionalities:

Highflow Series (17, 21, and 26 litres per minute): These electronic gas hot water systems are designed for external installation and come standard with antifrost protection. They offer 50°C limited models in Australia to comply with specific standards, eliminating the need for mechanical tempering valves in certain applications. Up to four optional temperature controllers can be installed, providing precise temperature control, enhanced energy efficiency, and water-saving features. These units boast a minimum 5.5-star energy efficiency rating.
32 Series (32 litres per minute): Available for both external and internal installation, the 32 Series is suitable for large homes and commercial applications. These units feature a coated copper heat exchanger for corrosion prevention and internal copper piping that is 25% thicker than standard domestic models, ensuring extra durability. Up to three optional temperature controllers can be installed for precise temperature control. The 32Q model in this series includes a built-in pump and a main controller, enabling programmed water re-circulation into the hot water supply line. This feature reduces hot water delivery time and minimizes unnecessary water usage, particularly beneficial for ring mains up to 60m in length.
HydroPower Series (10, 13, and 16 litres per minute): These systems are unique to Bosch, utilizing water flow to generate the electricity needed for ignition. This eliminates the need for a power point, batteries, or a pilot light, simplifying installation. Both external and internal HydroPower models are available, with internal models being ideal for frost-prone areas.
Pilot Ignition Series (10, 13, and 16 litres per minute): These external installation-only systems feature a standing pilot light for ignition, offering straightforward installation. (Note: Pilot gas hot water systems are not available in New Zealand).

Usage Features

Bosch hot water systems are designed for user convenience and energy efficiency:

On-Demand Hot Water: All continuous flow systems heat water only when a hot water tap is opened, ensuring a constant supply without running out.
Temperature Controllers: Optional temperature controllers are available for Highflow and 32 Series models. These controllers allow users to set and maintain the desired water temperature with single-degree accuracy. They also display fault codes, simplifying troubleshooting.
- Highflow Controllers: Up to four controllers (one main, one bathroom, and two sub-controllers) can be installed. Premium controllers offer a "Water Saver" function that automatically stops water flow after a pre-defined amount, while Standard controllers provide an audible alarm.
- 32 Series Controllers: Up to three controllers (one main and two sub-controllers) can be fitted. The main controller for the 32Q model includes a circulation mode, allowing programmed hot water re-circulation for peak usage times, reducing wait times at outlets.
Antifrost Protection: Highflow and 32 Series models come standard with antifrost protection, making them suitable for colder climates. For HydroPower and Pilot range systems in areas prone to short periods of 0°C, an Exogel valve is recommended. For extended periods of frost or sub-zero temperatures, internal HydroPower, external Highflow, or 32 Series models are more suitable.
Commercial Applications (32 Series & Professional Packs): The 32 Series is specifically designed for commercial use, offering a high flow rate of 32 litres per minute at a 25°C temperature rise. For larger demands, Bosch Professional Packs combine a 32 Series hot water system with a 315-litre Bosch-Everlast stainless steel storage tank, thermostat, shroud, PTR valve, and pump. These pre-assembled systems are ready for installation, simplifying logistics for high-volume hot water requirements.
Manifolding Options: Bosch 32 models can be manifolded in series (2 to 6 units) to share the workload, catering to very high hot water demands. For 2 units, a quick connection cable is used, while 3 to 6 units utilize an electronic rotation manifold system controller (KMSC201) to ensure even load distribution. Manifolds can also be combined with Bosch-Everlast stainless steel tanks.
Compatibility: Bosch hot water systems are compatible with most taps and shower heads, though a minimum flow rate of 9 litres per minute is required for operation. Water flow restrictors can be used as long as they allow this minimum flow.

Maintenance Features

Regular maintenance is crucial for optimal performance and longevity of Bosch Gas Hot Water Systems:

Servicing Intervals: Domestic gas appliances should be serviced at least every two years, while commercial gas hot water applications require servicing at least annually.
Gas Pressure Setting: Although all Bosch units are factory-tested, gas inlet pressures and burner pressures (for mechanical units) must be set and checked at every service by an authorized person to ensure correct operation.
Fault Diagnosis: Temperature controllers for Highflow and 32 Series models display fault codes, which assist in quick and accurate diagnosis of any operational issues.
Installation Regulations: The guide emphasizes adherence to AS 5601 / NZ 5621 standards and local authority guidelines for installation, including minimum clearance of flue terminals and appropriate installation locations for internal continuous flow systems. This ensures safe and compliant operation.
Warranty: The Bosch warranty covers manufacturing defects. Issues arising from poor installation or other external factors are the responsibility of the consumer or installer.
Technical Support: Bosch provides customer contact centers in Australia and New Zealand, along with a network of authorized service agents, to assist with any problems or queries.

This comprehensive guide ensures that Bosch Gas Hot Water Systems are selected, installed, and maintained correctly, providing reliable and efficient hot water for years to come.

Bosch Highflow 17e Specifications

General

Voltage	230 V
Ignition Type	Electronic
Phase	Single Phase
Type	Instantaneous Water Heater
Fuel Type	Natural Gas or LPG
Gas Connection	G 1/2"
Water Connection	G 1/2"