Electrical Wiring – Rd2 - Toshiba RBC-RD1-PE Installation Instructions Manual

K7046 Combined Installation
G
If more than one CDU is installed (max 5 – 46HP), then each refrigerant detector must
be connected in series to the unit in the inverter CDU. The CDU interface cable is only
required in the inverter CDU.
G
Connect each refrigerant detector using 3-core cable to the L1, N and earth terminals
in each CDU. Each detector unit must be protected by a 1A 240VAC fuse.
G
Connect the AI control cable as shown below:
AI
CDU #5 CDU #4
(Fix) (Fix)
G
Then to complete the loop connect the cables to the inverter electrical box, as
described on the previous page.
G
If solenoid valves are to be used, then an additional 2-core cable will be required to
connect to the volt free NC relay contacts. The maximum rating of the contacts are
240V @ 5A, if this is not sufficient then an additional power relay or contactor must
be used. Please refer to the above wiring diagram.
G
It must be noted that any solenoids valves selected for this application must be
capable of operating at a pressure of 33bar and with the flow being bi-directional.
6/3/01 8:37 am
GB
Electrical Wiring – RD2
AI
AI
CDU #3 CDU #2
(Fix)
14
Page 14
Connect to Inverter
Electrical Box
AI AI
CDU #1
(Fix) (Inv)