Original Instructions for Installation, Use and Maintenance
Active Chilled Beam Type HDC
Section:
Page:
Date:
AG--B 213.1e
28
Feb. 2010
The Innovation Company
LTG Aktiengesellschaft
E
LTG Aktiengesellschaft
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Grenzstraße 7
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D-70435 Stuttgart
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+49 (0711) 8201-0
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Fax -720
Internet: http://www.LTG-AG.de
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E-Mail: [email protected]
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Printed in Germany
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Ausgaben mit früherem
Datum werden hiermit ungültig
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Technische Änderungen vorbehalten
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Former editions are invalid
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Subject to technical modifications.
6.3
Two-pipe and Four-pipe System
Here a few explanations regarding
two--pipe systems
and
four--pipe systems
for easier understanding:
The
two--pipe system
has 2 water connections (supply and return) with one heat exchanger for either heating
or cooling, or for heating in winter and cooling in summer.
The
four--pipe system
has 4 water connections (2 each for supply and return, one each for warm water and
cold water) with 2 heat exchangers or one heat exchanger with separate water circuits, for heating and cooling.
6.4
Selecting the Room Temperature
Set the room temperature controller to the desired value (usually in the range’s center). If, after a certain time,
you consider this too cold turn the knob in direction of ”warmer”. If considered too warm, turn the knob in
direction of ”cooler”.
In order to find the right setting meeting your personal needs adjust in small steps and allow sufficient time
for walls, ceilings, floors, and furniture to adapt (about 1/2 to 1 hour).
There is a wide variety of temperature selectors with scales in
_
C, in temperature steps such as 1 to 10, or
only ”warmer” -- ”cooler” (+1--, red for warmer, blue for cooler etc.). For more information check with the
installation manufacturer.
6.5
Excessive Noise and Draught
It might occur, especially after cleaning, that the units display increased noise and draught. It means that pri-
mary air duct nozzles have loosened or fallen off. Reinstall or replace them. Some units on the same pipe run
may be blocked (e.g. polluted nozzles) resulting in the unit being operated with an increased primary air vo-
lume. In that case have the unit repaired.
6.6
Out-of-service Times
If the primary air system is not to be operated for a longer period of time in summer, shut off the cold water
supply to the induction units’ heat exchangers to avoid condensate formation, overflow, and thus damages.
