Wiring Of Main Power Supply And Equipment Capacity - Mitsubishi Electric CITY MULTI Series Installation Manual

<Maximum Lengths>
1 ME Remote controller [Fig. 11.3.1] [Fig. 11.3.4] (P.16, 17)
• Max length via heat source units (M-NET cable): L
• Max transmission cable length (M-NET cable): L
• Remote controller cable length:
If the length exceeds 10 m [32 ft], use a 1.25 mm
calculation of the maximum length and overall length.
2 MA Remote controller [Fig. 11.3.2] [Fig. 11.3.5] (P.16, 18)
• Max length via heat source units (M-NET cable): L
• Max transmission cable length (M-NET cable): L
• Remote controller cable length: m
3 Transmission booster [Fig. 11.3.3] [Fig. 11.3.6] (P.17, 18)
• Max transmission cable length (M-NET cable): For PQHY
• Remote controller cable length:

11.4. Wiring of main power supply and equipment capacity

Schematic Drawing of Wiring (Example)
[Fig. 11.4.1] (P.18)
A Switch (Overcurrent breaker
and earth leakage breaker)
D Pull box
F BC controller/HBC controller (standard or main) (for PQRY-P series)
F' BC controller (sub)/HBC controller (sub) (for PQRY-P series)
G Earth
Thickness of wire for main power supply, capacities of the switch and system impedance
Model
Power cable
PQHY P200YLM
P250YLM
P300YLM
P350YLM
P400YLM
P450YLM
P500YLM
P550YLM
P600YLM
PQRY P200YLM
P250YLM
P300YLM
P350YLM
P400YLM
P450YLM
P500YLM
P550YLM
P600YLM
1. Use dedicated power supplies for the heat source unit and indoor unit. Ensure OC and OS are wired individually.
2. Bear in mind ambient conditions (ambient temperature, direct sunlight, rain water, etc.) when proceeding with the wiring and connections.
3. The wire size is the minimum value for metal conduit wiring. If the voltage drops, use a wire that is one rank thicker in diameter.
Make sure the power-supply voltage does not drop more than 10%.
4. Specific wiring requirements should adhere to the wiring regulations of the CSA22-1 and ANSI/NFPA No.70.
5. Power supply cords of parts of appliances for heat source use shall not be lighter than polychloroprene sheathed flexible cord (design 245 IEC57).
6. A switch with at least 3 mm [1/8 in] contact separation in each pole shall be provided by the Air Conditioner installer.
7. If the power cable is damaged, it must be replaced by the manufacture, its service agent or similarly qualified persons in order to avoid a hazard.
Warning:
• Be sure to use specified wires for connections and ensure no external force is imparted to terminal connections. If connections are not fixed firmly,
heating or fire may result.
• Be sure to use the appropriate type of overcurrent protection switch. Note that generated overcurrent may include some amount of direct current.
Caution:
• Some installation sites may require attachment of an earth leakage breaker for the inverter. If no earth leakage breaker is installed, there is a danger of
electric shock.
• Do not use anything other than a breaker and fuse with the correct capacity. Using a fuse or wire of too large capacity may cause malfunction or fire.
+L +L +L and L +L
1 2 3 4 1
and L +L and L +L
1 3 4 3
, , , ≤ 10 m [32 ft] (0.3 to 1.25 mm
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 [656 ft] (0.3 to 1.25 mm
1 2 1 2 3 4
1 L + L + L + L
11 12 13
2 L + L + L + L
11 12 13
3 L + L + L ≤ 200 m [656 ft] (1.25 mm
11 12 14
4 L + L + L + L
16 15 13
For PQRY
1 L + L + L + L
11 12 13
2 L + L + L + L
11 12 13
3 L + L + L + L
11 12 13
4 L + L + L + L
17 16 14
, ≤ 10 m [32 ft] (0.3 to 1.25 mm
2
1 2
If the length exceeds 10 m [32 ft], use 1.25 mm
[Fig.11.3.3], L and L refer to [Fig.11.3.6]) as within the total extended length and the longest remote length.
15 18
B Earth leakage breaker C Heat source unit
E Indoor unit
2
Minimum size (mm [AWG])
Power cable after
Earth wire
branching point
4.0 [12] -
4.0 [12] -
4.0 [12] -
4.0 [12] -
4.0 [12] -
6.0 [10] -
6.0 [10] -
10.0 [8] -
10.0 [8] -
4.0 [12] -
4.0 [12] -
4.0 [12] -
4.0 [12] -
4.0 [12] -
6.0 [10] -
6.0 [10] -
10.0 [8] -
10.0 [8] -
+L +L and L +L +L ≤ 500 m [1,640 ft] (1.25 mm
2 3 5 1 2 6
and L and L +L ≤ 200 m [656 ft] (1.25 mm
5 6 2 6
[AWG 22 to 16])
2
[AWG 16] shielded wire. The length of this section (L
2
+L ≤ 500 m [1,640 ft] (1.25 mm [AWG 16] or more)
2
2 6
+L ≤ 200 m [656 ft] (1.25 mm [AWG 16] or more)
2
2 6
[AWG 22 to 16])
2
+ L ≤ 200 m [656 ft] (1.25 mm [AWG 16])
2
15 16
+ L ≤ 200 m [656 ft] (1.25 mm [AWG 16])
2
15 17
[AWG 16])
2
, L + L + L + L ≤ 200 m [656 ft] (1.25 mm
14 14 13 15 17
+ L + L ≤ 200 m [656 ft] (1.25 mm
14 16 17
+ L + L ≤ 200 m [656 ft] (1.25 mm
14 16 18
≤ 200 m [656 ft] (1.25 mm [AWG 16])
2
15
, L + L + L + L ≤ 200 m [656 ft] (1.25 mm
15 15 14 16 18
[AWG 22 to 16])
[AWG 16] shielded cable and calculate the length of that portion (L
2
Earth leakage breaker
4.0 [12] 30 A 100 mA 0.1 sec. or less
4.0 [12] 30 A 100 mA 0.1 sec. or less
4.0 [12] 30 A 100 mA 0.1 sec. or less
4.0 [12] 30 A 100 mA 0.1 sec. or less
4.0 [12] 30 A 100 mA 0.1 sec. or less
6.0 [10] 40 A 100 mA 0.1 sec. or less
6.0 [10] 40 A 100 mA 0.1 sec. or less
10.0 [8] 60 A 100 mA 0.1 sec. or less
10.0 [8] 60 A 100 mA 0.1 sec. or less
4.0 [12] 30 A 100 mA 0.1 sec. or less
4.0 [12] 30 A 100 mA 0.1 sec. or less
4.0 [12] 30 A 100 mA 0.1 sec. or less
4.0 [12] 30 A 100 mA 0.1 sec. or less
4.0 [12] 30 A 100 mA 0.1 sec. or less
6.0 [10] 40 A 100 mA 0.1 sec. or less
6.0 [10] 40 A 100 mA 0.1 sec. or less
10.0 [8] 60 A 100 mA 0.1 sec. or less
10.0 [8] 60 A 100 mA 0.1 sec. or less
[AWG 16] or more)
2
[AWG 16] or more)
2
) should be included in the
5
[AWG 16])
2
[AWG 16])
2
[AWG 16])
2
[AWG 16])
2
Local switch (A)
Overcurrent breaker
Capacity Fuse (NFB) (A)
25 25 30
25 25 30
25 25 30
25 25 30
32 32 30
40 40 40
40 40 40
63 63 60
63 63 60
25 25 30
25 25 30
25 25 30
25 25 30
32 32 30
40 40 40
40 40 40
63 63 60
63 63 60
and L refer to
14 17
35