Mitsubishi Electric EHPT Serie Manual De Instalación página 16

4
Installation
<3 phase>
Affix label A that is included with the manuals near each
wiring diagram for cylinder unit and outdoor units.
Power supply
3N~ 400 V 50 Hz
en
Description
Booster heater (Primary circuit)
Immersion heater (DHW tank)
*1. If the installed earth leakage circuit breaker does not have an over-current protection function, install a breaker with that function along the same
power line.
*2. A breaker with at least 3.0 mm contact separation in each pole shall be provided. Use earth leakage breaker (NV).
The breaker shall be provided to ensure disconnection of all active phase conductors of the supply.
*3. Max. 45 m
If 2.5 mm² used, Max. 50 m
If 2.5 mm² used and S3 separated, Max. 80 m
*4. The values given in the table above are not always measured against the ground value.
Notes: 1. Wiring size must comply with the applicable local and national codes.
2. Indoor unit/outdoor unit connecting cords shall not be lighter than polychloroprene sheathed flexible cord. (Design 60245 IEC 57)
3. Install an earth longer than other cables.
4. Please keep enough output capacity of power supply for each heater. Insufficient power supply capacity might cause chattering.
15
Wiring
Earth
circuit
leakage
breaker
circuit
or
breaker
Isolating
*1, *2
switch
Power supply
3~ 400 V 50 Hz (E**T***-YM9*D)
3~ 230 V 50 Hz (E**T***-TM9*D)
Power supply
~/N 230 V 50 Hz
Electrical connections 3 phase
Power supply
3~ 400 V 50 Hz
3~ 230 V 50 Hz
~/N 230 V 50 Hz
Cylinder unit - Outdoor unit
Cylinder unit - Outdoor unit earth
Cylinder unit - Outdoor unit S1 - S2
Cylinder unit - Outdoor unit S2 - S3
Indoor unit power supply cords shall not be lighter than polychloroprene sheathed flexible cord. (Design 60227 IEC 53)
Cylinder unit
TB1
L
Outdoor unit
N
L1
S1 S1
L2
S2 S2
L3
S3 S3
N
ECB1
Wiring
L1
circuit
breaker
L2
or
Isolating
L3
switch
ECB2
Wiring cir-
cuit breaker
L
or
Isolating
N
switch
<Figure 4.4.2>
Capacity (Indoor unit Ref.) Breaker
9 kW
9 kW
3 kW
*3 3 × 1.5 (polar)
*3 1 × Min. 1.5
*4 230 V AC
*4 24 V DC
To control
board
For
booster
heater
(Primary circuit)
For
immersion
heater
(DHW tank)
Wiring
16 A *2 2.5 mm²
32 A *2 6.0 mm²
16 A *2 2.5 mm²