Sanyo SGP-E70J2GU2 User Manual page 108

Construction
<Basic cable diagram>
Caution: Make sure there is no mistakes in the cabling. (Mistaken cabling will cause a breakdown.)
Grounding
* Two or more units of ‚c‚q‚V‚U type and ‚X‚U type cannot be connected to one refrigeration system
when there are other multi-type units connected.
●Cabling procedure
Carry out the cabling according to the following procedure.
1) Connect the remote control to the remote control terminal board (1, 2) of the group indoor unit 1.
2) Connect (1, 2) of the remote control terminal of group indoor unit 1 to (1, 2) of the remote control
terminal of group indoor unit 2, using a 2-wire bus system. Next, from indoor unit 2 connect to the
remote control terminal board of the next unit (indoor unit 3) in a bus system. In this way, connect all
the indoor units in a bus system.
3) Connect the indoor/outdoor operation cable.
4) The remote control cable has no polarity.
■Control with 2 remote controls
❋ Control with 2 remote controls allows one or several indoor units to be operated with two remote controls.
(a maximum of 2 can be connected
Grounding
Terminal board
for remote control
cabling
❋ The set up method is the same as for "1Multi type for buildings".
3. Points regarding electrical construction (indoor unit)
Indoor/outdoor
operation cable
Indoor Indoor
unit(UH) unit 2
Grounding
Remote
control Bus system cable for group control
wiring
(Maximum 8 units can be connected)
Separately
sold item
Remote
control
Indoor
unit
Remote
control
cable
Terminal board
for remote control
cabling
Separately Separately
sold item sold item
Remote Remote
control control
(parent) (child)
Indoor
unit 3
Grounding
Indoor
unit(UH)
Grounding Grounding
Separately Separately
sold item sold item
Remote Remote
control control
(parent) (child)
E - 21
Indoor
unit 8
Grounding
Indoor/outdoor
operation cable
Indoor Indoor
unit 2 unit 3
Grounding
Bus system cable for
group control