Nalnor HRU-WALL Series, Руководство пользователя

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ALNOR
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systemy wentylacji
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User Manual
HRU-WALL
HRU-WALL-CONTR
Surface-mounted controller
HRU-WALL-CONTR-I
Flush-mouted controller
4.2 Optional accessories (sold separately)
5. Synchronisation
5.1 Synchronisation of few units
When the units are installed in pair, they must be synchronised so that when one unit is extracting, the other
is supplying, and viceversa.
This is achieved by setting the dedicated jumper (Fig. 20A-20B). One unit is set in A position, other in B
position. Units which are supposed to work in synchronisation mode can be connected to a single HRU-WALL-
CONTR / HRU-WALL-CONTR-I controller. One can connect up to 10 units to a single controller.
5.2 Reset of the synchronisation
OPTION 1 : If two or more units are connected under the same main switch, to reset the synchronisation, the
main switch must be switched first OFF and then ON to reactivate (Fig. 34).
OPTION 2 : If two or more units are not connected under the same main switch, to reset the synchronisation,
press at the same time the black pin of each unit (Fig. 36) for at least 3 seconds.
6. Jumper positioning
Integral jumper set in position A (Fig. 20A) means “extract-only” mode.
Integral jumper set in position B (Fig. 20B) means “supply-only” mode.
The jumper position defines both the air-flow direction when the unit is activated for the first time (for the
synchronisation) and the air-flow direction of the free-cooling mode.
7. Maintenance and service
Maintenance can be carried out by the user as indicated at page 22.
Service must be perfmormed only by technically qualified personnel in accordance with local rules and
regulations. Make sure that the mains supply to the unit is disconnected (page 23).
Cleaning of the heat exchanger can be performed from outside as well.