A.O. Smith TWI 35-130 Notation system, This manual makes use of the following notation system

1.6	Notation system	This manual makes use of the following notation system:
		Remark
		Attention: important notice.
		Caution
		Ignoring this text may result in damage of the device.
		Warning
		Ignoring this text may lead to serious damage of the device and to
		situations that are dangerous to people.
1.7	Overview of this	The table provides an overview of the content of this document.
	document

Content of this document

Chapter		Target groups	Description
2.	Operation of the device		This chapter describes the operation of the device.
3.	Installation		This chapter describes the installation activities to be
			carried out before definitely starting up the device.
4.	Conversion to another		Conversion to another category is not possible.
category
5.	Fill		This chapter describes how to fill the device.
6.	Drain		This chapter describes how to drain the device.
7.	Start up		This chapter describes how to start up the device.
			It further describes the general heating cycle of the
			device.
8.	Shut down		This chapter describes how to shut down the device for
			a shorter or longer period.
9.	Errors		This chapter is mainly meant for the installation
			engineer and the service and maintenance engineer.
			It describes the errors of the device. These errors are
			shown on the display. A table gives the possible cause
			and solution. However, an end user can also find
			additional information about the device here.
10. Maintenance			This chapter describes how to determine the frequency
			for maintenance activities. Both the end user and the
			service and maintenance engineer are responsible
			for regular maintenance. They shall make clear
			appointments about this. Remark If the device is not
			regularly maintained, the warranty will become null and
			void.

Instruction manual TWI 35-130 G/TWI 45-190 G 9