Mitsubishi Electric CITY MULTI PUHY-P-YMF-B Installation Manual page 27

Permissible Lengths
Longest Transmission Cable Length
(1.25 mm 2 )
L + L , L + L , L + L = 200 m
1 2 2 3 3 1
Remote Controller Cable Length
2
1 If 0.5 to 0.75 mm
r , r
= 10 m
1 2
2 If the length exceeds 10 m, the
exceeding section should be 1.25
2
mm and that section should be a
value within the total extension
length of the transmission cable
and maximum transmission cable
length (L ).
3
Same as above
Same as above
Note:
1. If there is one or more 200 or higher indoor units within the same cooling system, and the number of indoor units exceeds 16 units, a
transmission booster is necessary (when a "PAR-F25MA Ver. F" or subsequent version of remote control is used).
2. If there is not even one 200 or higher indoor unit within the same cooling system, and the number of indoor units exceeds 20 units, a
transmission booster is necessary (when a "PAR-F25MA Ver. F" or subsequent version of remote control is used).
* For details, see wire connection example C.
OC
IC
(51)
(01)
TB3 TB7 TB5
M1 M2 M1 M2 S
M1 M2 S
TB6
(101) (151)
RC
A
OC
(51)
TB3 TB7
M1 M2 A B S
Prohibited Items
IC
(02)
TB5
M1 M2 S
TB6 TB6 TB6
(102) (103) (104)
RC RC RC
B A B
A B
IC IC
(01) (02)
TB5 TB5
M1 M2 S M1 M2 S
TB6
(102)
RC
• Use the indoor unit
(IC) address plus 150
as the sub remote
controller address. In
this case, it is 152.
• Three or more remote
controllers (RC)
cannot be connected
to one indoor unit.
TB6
A Main
RC
B Sub
• The remote control-
ler address is the
indoor unit main
address plus 100. In
this case, it is 101.
A Main
B Sub
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