Original Instructions for Installation, Use and Maintenance
Active Chilled Beam Type HDC
Section:
Page:
Date:
AG--B 213.1e
30
Feb. 2010
The Innovation Company
LTG Aktiengesellschaft
E
LTG Aktiengesellschaft
⋅
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.
6.8
Troubleshooting and Corrective Action
6.8.1
Room Temperature is not achieved
Trouble
Source
Action
No air movement at the unit’s
outlet grille
No primary air supply
Activate primary air supply
unit, check fire protection flaps
and, if necessary, open. It is im-
perative to investigate, find, and
remedy the cause for the flaps
closing. In case of shut--off flaps
for entire floors and duct runs,
check and, if necessary, open.
Check control.
No valve spindle movement
when actuator motor signal is
being changed.
Actuator is stuck
Set the temperature controller
from ”max. hot” to ”max. cold”
and vice versa, may be the ac-
tuator can thus be released. If
unsuccessful, remove actuator,
clean resp. change it.
Unit is heating or cooling, but
set temperature is not achieved
Window is open
Close window
No air movement, poor air mo-
vement or only perceivable in
parts of the diffuser grille
Suction opening or diffuser ope-
ning blocked or serverely impe-
ded
Remove objects from grilles and
openings.
Water supply lines to the unit
and heat exchanger are at room
temperature
No cold or hot water supply
Ensure cold and hot water sup-
ply, eliminate cold or hot water--
related problems, open shut--off
valves to supply
No control signal is applied to
the (valve) actuator, or it is not
the one according to setting
(Actuator performs wrong or no
movement).
Refer to separate instructions
for control
Deficient control
Have unit checked by a speciali-
zed technician replacing or re-
pairing broken parts
