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Contents
6720813173 (2014/09) 3
Contents
1 Key to symbols and safety instructions . . . . . . . . . . . . . . . . . . 3
1.1 Key to symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 General points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3 Items supplied with unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
4 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
5 Cascade frame installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5.1 Boiler assembly and pump group installation . . . . . . . . 7
5.2 Installing the insulation . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1 Key to symbols and safety instructions
1.1 Key to symbols
Warnings
Keywords indicate the seriousness of the hazard in terms of the
consequences of not following the safety instructions.
NOTICE indicates that material damage may occur.
CAUTION indicates that minor to medium injury may occur.
WARNING indicates that serious injury may occur.
DANGER indicates possible risk to life.
Important information
Additional symbols
2 General points
The installation instructions for cascade systems with GB162
appliances are provided to enable correct and easy installation.
The modular cascade frame consists of a number of supports with
connecting frames which are screwed together during installation.
The compact dimensions of the individual cascade frame parts enable
simple and quick installation.
3 Items supplied with unit
Cascade frame ( fig. 1)
•Supports
Connecting frame
Main gas pipe
Flow and return header
•Boiler connection kit
•Flange seals
Low loss header
•Blank flanges
Rubber pump seals
Fixings
Installation instructions.
Warnings in this document are framed and identified by
a warning triangle which is printed on a grey
background.
Electrical hazards are identified by a lightning symbol
surrounded by a warning triangle.
Important information in cases where there is no risk of
personal injury or material losses is identified by the
symbol shown on the left. It is bordered by horizontal
lines above and below the text.
Symbol Meaning
a step in an action sequence
a reference to a related part in the document or to other
related documents
a list entry
a list entry (second level)
Table 1
3


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