Hitachi PSC-6RAD Bedienungsanleitung Seite 12

6 TEST RUN
7) Terminal resistance is set in whole
H-LINK.
(i) If H-LINK connection devices like package
air-conditioner is connected besides RAC
adapter, set the terminal resistance by
package air-conditioner. The terminal
resistance should be ON in only one
position in whole H-LINK.
5.
TEST RUN
Test run should be performed in the following way after finishing the installation, wiring and setting.
See installation manual enclosed with each central control devices for the detail.
1) Connection State Confirmation
Confirm if RAC adapter connection is recognised in the central control device. In case that it is not
confirmed, check the transmission cable, refrigerant cycle No. indoor unit No., terminal resistance
setting etc.
2) Registration
Confirm if RAC adapter connection is recognised.
3) Confirmation of Run/Stop Order
Confirm if room air-conditioners work correctly by run/stop operation from the central control
devices. Check also if air-conditioner state changes correctly by each setting.
(ii) In case that H-LINK is made up only by
RAC adapter, set the terminal resistance
by RAC adapter. The terminal resistance
should be ON in only one position in
whole H-LINK.
PCB
Turn ON No. 1 pin of DSW4