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Contents
O P E R A T I N G A N D I N S T A L L A T I O N I N S T R U C T I O N S L G
7 5 0 - L G 6 0 0 0
P A G E
2
Introduction
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4
1
General
.................................................................................................................................................................
4
1.1
Designated use
.....................................................................................................................................................
5
1.2
Liability
...................................................................................................................................................................
5
1.3
Warranty
................................................................................................................................................................
5
1.4
Warranty provisions
.............................................................................................................................................
5
2
Safety
....................................................................................................................................................................
6
2.1
Symbols used in this document
....................................................................................................................
6
2.2
Safety regulations
..............................................................................................................................................
6
2.2.1
General
....................................................................................................................................................................................
6
2.2.2
Setting up the unit
................................................................................................................................................................
7
2.2.3
Electrical connections
.........................................................................................................................................................
7
2.2.4
Plant operation
......................................................................................................................................................................
8
3
Ventilation system functionality
....................................................................................................................
8
3.1
System description
..............................................................................................................................................
8
3.2
System extensions for frost protection
..............................................................................................................
9
3.2.1
Frost protection via heat exchanger bypass
.......................................................................................................................
9
3.2.2
Frost protection via water pre-heating exchanger (optional)
..........................................................................................
10
3.2.3
Frost protection via electric pre-heating exchanger (optional) ............................................................................... 12
3.3
Optional: System extension for external auxiliary heating
..........................................................................
14
3.3.1
Post heating via pumped hot water re-heating exchanger (PWW-NHR) ............................................................... 14
3.3.2
Re-heating using electrical heating ....................................................................................................................... 16
3.4
Optional: System extension for cooling
.........................................................................................................
18
3.4.1
Cooling with water cooling exchanger ................................................................................................................... 18
3.4.2
DX cooling (cooling unit) ....................................................................................................................................... 19
3.5
Heat exchanger
.................................................................................................................................................
19
3.6
Optional: Demand-driven plant operation
......................................................................................................
20
3.6.1
Constant CO2 value .............................................................................................................................................. 20
3.6.2
Fan optimiser......................................................................................................................................................... 20
3.6.3
GreenZone/PI zone modules, PI optimisers .......................................................................................................... 20
3.7
Optional: Building automation - networking
...................................................................................................
20
4
Ventilation unit
................................................................................................................................................
21
4.1
Description
.........................................................................................................................................................
21
4.2
Unit configuration with subassemblies Series LG 750 – LG 6000
.............................................................
22
4.3
Technical data Series LG 750 to LG 6000
....................................................................................................
22
4.4
Series LG 750 – LG 6000 versions
................................................................................................................
23
4.4.1
Modular units series
.............................................................................................................................................................
23
4.4.2
4.5
Compact units series System Mono-Case
........................................................................................................................
23
Air volume flow characteristics – external pressure increase: Without constant flow
volume function
..................................................................................................................................................
24
5
Control units
....................................................................................................................................................
25
5.1
General information
..........................................................................................................................................
25
5.2
Operator control unit PI-HMI
............................................................................................................................
25
5.2.1
Operation
...............................................................................................................................................................................
25
5.2.2
Fan speed
.............................................................................................................................................................................
25
5.2.3
Temperature
..........................................................................................................................................................................
26
5.2.4
Settings
..................................................................................................................................................................................
26
5.2.5
Installation on flat surface
....................................................................................................................................................
32
5.2.6
Installation in wall box/panel front
......................................................................................................................................
32
5.2.7
Modbus connection
..............................................................................................................................................................
33
5.2.8
Modbus RJ12 6P4C
.............................................................................................................................................................
33
5.2.9
Modbus screw terminals
......................................................................................................................................................
33
5.2.10 Technical data
.......................................................................................................................................................................
34
5.2.11 Service and maintenance
....................................................................................................................................................
34
5.3
Operator control unit “Pichler handheld terminal”
.........................................................................................
35
5.3.1
Display & operation
..............................................................................................................................................................
35