Introduction - Bosch GWH 345 ESR Applications Manual

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1 Introduction

The Applications Manual is intended to present some of the most
common applications of the Bosch GWH 345 ESR and GWH 450 ESR
tankless water heaters. Application drawings are shown with both
piping and corresponding electrical schematics where applicable.
Auxiliary equipment depicted does not necessarily represent any
one manufacturer or specifi c model number. There are a wide
variety of techniques, practices and piping strategies possible when
installing water heating appliances. It is the responsibility of the
installing contractor to determine the most suitable arrangement for
the application.
All drawings are conceptual in nature and does not address
all design, installation or safety considerations. Additional
safety and/or auxiliary equipment may be needed.
Drawings are for reference use by offi cials, designers and
licensed installers. It is expected that installers have
adequate knowledge of accepted industry practices for the
equipment, procedures, and applications involved. It is the
responsibiltiy of the installer to ensure that the installation
is in accordance with local building codes.
Although this manual covers many common applications for our
products, system possibilities are virtually endless. Should you
encounter an application that is not covered in this manual or have
any questions regarding any of its content, we encourage you to
contact your local sales representative or us directly at Bosch
Thermotechnology.
This is not a substitute for any of the product's installation manuals.
All specifi cations subject to change.
Installation must conform with local codes or, in the absence of
local codes, the National Fuel Gas Code ANSI Z 223.1/NFPA 54.
In Canada: Installation must conform with CGA B149.(1,2)
INSTALLATION CODES and/or local installation codes.
Application manual | 02.2009
GWH 345/450 ESR applications manual
BOSCH THERMOTECHNOLOGY CORPORATION