Mitsubishi Electric PAC-IF011B-E Installation Manual page 5

3. Electrical work
3.1.2. Separate interface unit/outdoor unit power supplies
The following connection patterns are available.
The outdoor unit power supply patterns vary on models.
A B C
Photo.3-3
Interface unit model
Interface unit power supply
Interface unit input capacity
Main switch (Breaker)
Interface unit power supply
Interface unit power supply earth
Interface unit-Outdoor unit
Interface unit-Outdoor unit earth
Interface unit L-N
Interface unit-Outdoor unit S1-S2
Interface unit-Outdoor unit S2-S3
*1. A breaker with at least 3.0mm contact separation in each pole shall be provided. Use earth leakage breaker (NV).
*2. Max. 120 m
*3. The fi gures are NOT always against the ground.
Notes: 1. Wiring size must comply with the applicable local and national code.
2. Power supply cables and interface unit/outdoor unit connecting cables shall not be lighter than polychloroprene sheathed fl exible cable.
(Design 60245 IEC 57)
3. Install an earth longer than other cables.
3.1.3. Connecting thermistor cable
Connect the thermistor 2 for the interface controller.
1. Target temp. thermistor (TH1)
Connect the thermistor for the target temp. to 1 and 2 on the terminal block (TB61)
on the interface controller.
2. Pipe temp. thermistor / Liquid (TH2)
Connect the thermistor for the pipe temp. to 3 and 4 on the terminal block (TB61)
on the interface controller.
3. Cond./eva. temp. thermistor (TH5): For PAC-IF012B-E only
Connect the thermistor for the cond./eva. temp. to 5 and 6 on the terminal block
(TB61) on the interface controller.
When the thermistor cables are too long, cut it to the appropriate length.
Do not bind it in the interface unit.
Caution:
Do not route the thermistor cables together with power cables.
The sensor part of the thermistor should be installed where user
must not touch.
(It is separated by the supplementary insulation from where user
may touch.)
1:1 System
D
F
L L
G B C
N
N
S1 S1
S2 S2
S3 S3
E
CNS2
*1
*2
*3
*3
*3
A Outdoor unit power supply
B Earth leakage breaker
C Wiring circuit breaker or isolating switch
D Outdoor unit
E Interface unit/outdoor unit connecting cables
F Interface unit
G Interface unit power supply
If the interface and outdoor units have separate power supplies, refer to the table below.
Interface unit controller connector
(CNS2) connection change
Outdoor unit DIP switch settings (when
using separate interface unit/outdoor
unit power supplies only)
PAC-IF011/012B-E
~/N (Single Phase), 50 Hz, 230 V
16 A
2 × Min. 1.5
1 × Min. 1.5
2 × Min. 0.3
—
AC 230 V
—
DC24 V
TB61
TH1
TH2
TH5
Separate power supply specifi cations
Disconnected
ON 3
OFF 1 2 (SW8)
Set the SW8-3 to ON.
Photo.3-4
5