Electrical Cabling System Diagram - Sanyo SGP-E70J2GU2 User Manual

Construction

(3) Electrical cabling system diagram

For electrical cabling installation, refer to the electrical
cabling system below, as well as the outdoor unit cable
diagram and the indoor unit circuit diagram.
1Multi-type system for buildings
■Cabling method
There are two types of power terminal board for indoor units, 7P and 5P+2P. The following basic cabling
diagram is drawn using the 5P+2P terminal board, so there are terminal boards that are different from those
shown in the illustration.
Arrangement for a one refrigeration system
Note 1) When a centralized control device is used, the signal cable from the centralized control device should
be connected to be the same signal cable as the indoor/outdoor operation cable. (no polarity)
Note 2) S7 on the outdoor unit board (terminal resistance ON/OFF switch) should be set to the ON side (when
shipped from the factory it is set to ON).
Earth leakage
breaker
When the centralized control device controls indoor units on several refrigeration systems
Note 1) The power supply cabling for the indoor units should be carried out for each separate refrigeration
system. (If this cannot be done then use the bus system or the relay at a pull box.
Also, power cabling for outdoor units should be separate for each outdoor unit.
Note 2) The signal cable from the centralized control device should be connected to be the same signal cable
as the indoor/outdoor operation cable. (no polarity)
Note 3) The maximum number of units that can be connected to the same signal cable is 64 indoor units,
and 30 outdoor units.
Note 4) If the indoor/outdoor operation cable is connected in a loop then communication is not possible.
Therefore, do not connect in a loop.
Note 5) On the common communication cable (indoor/outdoor operation cable) outdoor unit board
S7(terminal resistance ON/OFF switch), all units save one should be set to the OFF side (when
shipped from the factory they are set to ON).
3. Points regarding electrical construction (indoor unit)
Earth leakage
Outdoor unit
breaker
Grounding
Indoor unit
Grounding
Grounding
Remote control
wiring
Separately
sold item
Remote
control
Earth leakage breaker
Outdoor
unit 1
Grounding
Indoor/outdoor
operation cable
Earth leakage breaker
Indoor unit
Indoor unit
Maximum
20 units
Grounding Grounding
Remote
control
wiring
Separately Separately
sold item sold item
Remote Remote
control control
Same refrigerant system
7P terminal board
Power
source Indoor/
outdoor
operation
cable
7P terminal board model
Indoor/outdoor
operation cable
Indoor unit Indoor unit
Grounding Grounding Grounding
Bus system cable for group control
Separately
sold item (Maximum 8 units can be connected)
Remote
control
Earth leakage breaker
Outdoor
unit 2
Grounding
Indoor unit Indoor unit
Grounding
Grounding
Earth leakage
breaker
Separately Separately
sold item sold item
Remote Remote
control control
Same refrigerant system
E - 14
5P terminal board
Indoor/
Remote Power
outdoor
source
control
operation
cable
5P+2P terminal board model
Central control device
Indoor unit
Indoor unit
Maximum
20 units
Grounding
Separately
sold item
Remote
control
To other systems
Indoor unit
Maximum
20 units
Grounding
Separately
sold item
Remote
control
2P terminal board
Remote
control