Unigas HR2050, Manual Of Installation - Use - Maintenance

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Building Technologies Basic Documentation LMV5... CC1P7550en
HVAC Products 18 Addendum 4: LMV52... with O2 trim control and O2 module 11.12.2008
O2 module
In comparison with the LMV51... system, the extra components to be connected with
the LMV52… system are the O
2
module and the O
2
sensor QGO... and, optionally, the
combustion air and flue gas temperature sensors. The O
2
module is to be connected to
the basic unit via the CAN bus. The O
2
module must be located in the vicinity of the
QGO... (< 10 m), aimed at keeping interference on the sensitive detector lines as low
as possible. For sensor heating, the O
2
module requires a separate mains connection
facility.
18.8.1 Inputs and outputs
M
ou
nt
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M
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52
...
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ou
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p
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or
7
55
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3
Temporary connection of
AZL5...
M
ai
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1
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1
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1
1
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2
C
A
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C
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3
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S
Achtung!
Schutzleiterverbindung zwischen Gehäuse-Oberteil
und Gehäuse-Unterteil herstellen.
Important!
Make protective earth connection between
the two housing sections.
L
IN
E
V
O
L
T
A
G
E
Q
G
O
..
.
Q
G
O
..
.
X89-02
T2.5 IEC 60127-2/I