Mitsubishi Electric CITY MULTI PQHY-P200YHM-A Manuel D'installation page 27

Unit
Indoor unit (Main)
Indoor unit (Sub)
Heat source Unit (OC, OS)
BC controller (Main)
BC controller (Sub)
M-NET R/C (Main)
M-NET R/C (Sub)
MA R/C
h. The group setting operations among the multiple indoor units is done by the remote controller (RC) after the electrical power has been turned on.
i. When the centralized remote controller is connected to the system, set centralized control switches (SW2-1) on control boards in all heat source units (OC, OS) to
"ON".
*1 OC and OS of the heat source units in the same refrigerant system are automatically identifi ed. They are identifi ed as OC and OS in descending order of capacity (If
the capacity is the same, they are identifi ed in the ascending order of their address number).
<Permissible Lengths>
1 M-NET Remote controller [Fig. 11.3.4] (P.12)
• Max length via heat source units: L
• Max transmission cable length: L
• Remote controller cable length:
If the length exceeds 10 m, use a 1.25 mm
maximum length and overall length.
2 MA Remote controller [Fig. 11.3.5] (P.13)
• Max length via heat source unit (M-NET cable): L
• Max transmission cable length (M-NET cable): L
• Remote controller cable length: m
3 Transmission booster [Fig. 11.3.6] (P.13)
• Max transmission cable length (M-NET cable): 1 L
• Remote controller cable length:
Range
01 to 50 Use the most recent address within the same group of indoor units. With an R2 system with sub BC
controllers, set the indoor unit address in the following order:
1 Indoor units connected to the main BC controller
2 Indoor units connected to BC sub controller 1
3 Indoor units connected to BC sub controller 2
Set the indoor unit addresses so that all the addresses of 1 are smaller than those of 2, and that all
the addresses of 2 are smaller than those of 3.
01 to 50 Use an address, other than that of the IC (Main) from among the units within the same group of indoor
units. This must be in sequence with the IC (Main)
51 to 100 Set the addresses of the heat source units in the same refrigerant system in the order of sequential
number. OC and OS are automatically identifi ed. (*1)
51 to 100 Heat source unit address plus 1. When the set indoor unit address duplicates the address of another
indoor unit, set the new address to a vacant address within the setting range.
51 to 100 Lowest address within the indoor units connected to the BC controller (sub) plus 50
101 to 150 Set at an IC (Main) address within the same group plus 100
151 to 200 Set at an IC (Main) address within the same group plus 150
– Unnecessary address setting (Necessary main/sub setting)
+L +L +L and L +L +L +L and L
1 2 3 4 1 2 3 5
and L +L and L +L and L and L
1 3 4 3 5 6 2
, , , 10 m (0.3 to 1.25 mm 2 )
1 2 3 4
+L +L +L and L +L
1 2 3 4 1
and L +L and L and L
1 3 4 6
+m and m +m +m +m 200 m (0.3 to 1.25 mm
1 2 1 2 3 4
+ L + L + L
11 12 13 14
2 L + L + L + L
11 12 13 14
3 L + L + L + L
11 12 13 15
4 L + L + L + L
17 16 14 15
, 10 m (0.3 to 1.25 mm 2 )
1 2
If the length exceeds 10 m, use 1.25 mm
extended length and the longest remote length.
Setting Method
+L +L 500 m (1.25 mm or more)
2
1 2 6
+L 200 m (1.25 mm 2 or more)
6
shielded wire. The length of this section (L
2
+L 500 m (1.25 mm 2 or more)
2 6
+L 200 m (1.25 mm 2 or more)
2 6
2 )
+ L + L 200 m (1.25 mm 2 )
16 17
+ L + L 200 m (1.25 mm 2 )
16 18
200 m (1.25 mm 2 )
, L + L + L + L 200 m (1.25 mm
15 14 16 18
shielded cable and calculate the length of that portion (L
2
) should be included in the calculation of the
8
)
2
and L ) as within the total
15 18
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