Mitsubishi Electric City Multi PKFY-P NAMU-E Serie Manual De Instalación E Usuario página 15

6. Electrical work
A B
C C
E
A Switch 15 A
B Overcurrent protection 15 A
C Indoor unit
D Total operating current be less than 15 A
E Ground
Fig. 6-6
I PKFY-P06/P08NAMU-E
SW5
220V 240V
(208V) (230V)
SW1
ON
OFF
1 2 3 4 5 6 7 8 9 10
SW12 SW11
0 0
I PKFY-P12/P15NGMU-E
I PKFY-P18/P24/P30NFMU-E
SW5
220V 240V
(208V) (230V)
SW1
ON
OFF
1 2 3 4 5 6 7 8 9 10
SW12 SW11
0 0
Fig. 6-7
D
C C C C C
CN43
CN82
SW14
0
CN43
CN82
SW14
SWC
2
0
1
Types of control cables
1. Wiring transmission cables: Shielding wire CVVS or CPEVS
• Cable diameter: More than 1.25 mm
2. M-NET Remote control cables
Kind of remote control cable 2-core cable (unshielded)
Cable diameter More than 0.5 (AWG20) to 0.75 mm
When 33 ft. (10 m) is exceeded, use cable with
the same specifications as transmission line
Remarks
wiring (shielding portion is more than 1.25 mm
(AWG16))
3. MA Remote control cables
Kind of remote control cable 2-core cable (unshielded)
Cable diameter 0.3 mm
6.3. Power supply wiring (Fig. 6-6)
Power cable size (diameter) : more than 1.6 mm (AWG14)
Ground cable size (diameter) : 1.6 mm (AWG14)
* Use copper supply wires.
* Use the electric wires over the rating voltage 300 V.
[Selecting non-fuse breaker (NF) or earth leakage breaker (NV)]
To select NF or NV instead of a combination of Class B fuse with switch, use the
following:
• In the case of Class B fuse rated 15 A or 20 A,
NF model name (MITSUBISHI): NF30-CS (15 A) (20 A)
NV model name (MITSUBISHI): NV30-CA (15 A) (20 A)
Use an earth leakage breaker with a sensitivity of less than 30 mA 0.1 sec.
Caution:
Do not use anything other than the correct capacity breaker and fuse. Using
fuse, wire or copper wire with too large capacity may cause a risk of malfunc-
tion or fire.
6.4. Setting addresses (Fig. 6-7)
Be sure to operate with the main power turned OFF.
• There are two types of rotary switch setting available: setting addresses 1 to 9 and
over 10, and setting branch numbers.
1 How to set addresses
Example: If Address is "3", remain SW12 (for over 10) at "0", and match SW11(for
1 to 9) with "3".
2 How to set branch numbers (Series R2 only)
Match the indoor unit's refrigerant pipe with the BC controller's end connection
number. Remain SW14 other than R2 at "0".
• The rotary switches are all set to "0" when shipped from the factory. These switches
can be used to set unit addresses and branch numbers at will.
• The determination of indoor unit addresses varies with the system at site. Set them
referring to technical data.
Note:
Please set the switch SW5 according to the power supply voltage.
• Set SW5 to 230 V side when the power supply is 230 V.
• When the power supply is 208 V, set SW5 to 208 V side.
2 (AWG16)
2
(AWG18)
2 2
(AWG22) to 1.25 mm (AWG16)
2
15