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1
. . Introduction
1.1
About this manual
1.2
How to read this manual
en-4
This manual describes the installation, operation and mainte-
nance of the heat-recovery unit HR. The manual also provides
instructions and information for servicing activities.
1.2.1 Designations used in the manual
The following symbols are used in the manual:
Note:
n
Refers to an important section in the text.
Caution:
c
If you do not carry out the procedure or action
correctly, you may cause damage to the unit.
Follow the instructions precisely.
Warning:
w
If you do not carry out the procedure or
action correctly, you may cause physical injury
and/or damage.
Follow the instructions precisely.
Danger:
d
Is used to designate actions that are not
permitted.
Ignoring this prohibition may lead to serious
damage or to accidents resulting in physical
injury.
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