Mitsubishi Electric CITY MULTI PUHY-P-YKB-A1 Manuel D'installation page 41

(2) When MA remote controllers are connected
* Move the power jumper from
CN41 to CN40. *
1
* SW5-1: ON *
2
* Leave the power jumper
connected to CN41.
* SW5-1: ON *
2
*1 When a power supply unit is not connected to the centralized control transmission cable, move the power jumper from CN41 to CN40 on
only one of the outdoor units.
*2 If a system controller is used, set SW5-1 on all of the outdoor units to ON.
*3 When a PAR-31MAA is connected to a group, no other MA remote controllers can be connected to the same group.
Maximum allowable length of control cables
Transmission cables via outdoor units
Transmission cables
Remote controller cables
(3) When a transmission booster unit is connected
TB7 TB7
Ⓐ
Shielded cable
Ⓐ
*1 Daisy-chain terminals (TB3) on outdoor units together in the same refrigerant system.
*2 Leave the power jumper connected to CN41.
Maximum allowable length of control cables
Transmission cables
Remote controller cables
KD79S703H01
Group 1
Ⓐ
Ⓒ
L + L
1 2
L , L
1 3
m + m
1
TB7
L + L
1 2
L + L
6 5
ℓ , ℓ ≤ 10 m (32 ft)
1 2
* If the length exceeds 10 m (32 ft), the length that exceeds 10 m (32 ft) needs
to be included in the maximum allowable length of transmission cables
above.
GB-39
Group 3 Group 5
Ⓑ
+ L + L , L + L + L ≤ 500 m (1640 ft)
3 4 1 2 6
+ L , L , L + L ≤ 200 m (656 ft)
4 6 2 6
, m + m + m + m ≤ 200 m (656 ft)
2 1 2 3 4
Earth
+ L + L + L , L + L + L + L
3 5 6 1 2 3 5
+ L + L , L + L + L + L ≤ 200 m (656 ft)
3 4 4 3 5 7
Shielded cable
Ⓐ
Sub remote controller
Ⓑ
System controller
Ⓒ
+ L , L + L + L ,
7 1 2 4