Drainage Piping Work; Electrical Work - Mitsubishi Electric PEAD-RP-EA Installation Manual

5. Refrigerant piping work

6. Drainage piping work

7. Electrical work

• After connecting the refrigerant piping to the indoor unit, be sure to test the pipe
connections for gas leakage with nitrogen gas. (Check that there is no leakage
from the refrigerant piping to the indoor unit.)
5.3. For twin/triple combination
Refer to the outdoor unit installation manual.
6.1. Drainage piping work (Fig. 6-1)
1. For drain piping, provide a downward slope of 1/100 or more to the water outlet
and do not provide any trap or rising section on the way.
2. Keep the horizontal length of drain piping less than 20 m (not including the height
difference).
For long drain piping, provide a metal support, fixture on the way to eliminate the
waving of the piping. Never install an air vent pipe. Otherwise, drain may blow out.
3. For drain piping, use the PVC pipe VP-25 (outside diameter ø32).
4. For collective drain piping, arrange the piping to 10 cm lower than the unit drain
outlet.
5. Insulate the drain pipe with insulating material as 5.1.
6. Locate the outlet of drain piping so that it will not generate odor.
Do not connect drain piping directly to sewer system as this may generate sulfur
gas.
A Downward slope 1/100 or more
B Connection dia 25A external thread
C Indoor unit
D Maximize this length to approx. 10 cm
E Collective piping
F Downward slope 1/100 or more
7.1. Indoor unit (Fig. 7-1)
<A> In case of RP·EA (2)
<B> In case of RP·GA
<C> In case of P·EAH
Field wiring method
1 1 1 1 1 Open knockout holes.
(Recommend to use a screwdriver or the like for this work.)
A Control box C Knockout hole
B Knockout hole D Remove
2 2 2 2 2 Fix the power source, transmission wiring (3 × 1.5 mm
box by using buffer bushing for tensile force. (PG connection or the like.)
Secure the wiring H H H H H with the tie wrap J J J J J . Connect the remote controller
wiring to terminal block through the knockout hole of control box using
ordinary bushing.
E To prevent external tensile force from applying to the wiring connection section of power
source terminal block use buffer bushing like PG connection or the like.
F Use ordinary bushing
G Remote controller
H Indoor/Outdoor unit connecting wiring
I Tensile force
J Tie wrap
K Electric heater wiring (PEHD model)
s Selecting non-fuse breaker (NF) or earth leakage breaker (NV).
s Always install an earth. (Earth cable size: Thicker than 1.5 mm
s Power supply cords H H H H H of appliances shall not be lighter than design 245
IEC57 or 227 IEC57.
7.1.1. Indoor unit power supplied from outdoor unit
The following connection patterns are available.
The outdoor unit power supply patterns vary on models.
1:1 System
<For models without heater>
D
L
A B C
N
S1
S2
S3
8
2
: polar) to control
2 )
G
S1
S2
S3
E
1
F
2
<For models with heater>
D
L
A B C
N
S1
S2
S3
A Outdoor unit power supply
B Earth leakage breaker
C Wiring circuit breaker or isolating switch
D Outdoor unit
E Indoor unit/outdoor unit connecting cords
F Remote controller
G Indoor unit
H Heater power supply
* Affix a label A that is included with the manuals near each wiring diagram for the
indoor and outdoor units.
Simultaneous twin/triple/four system
<For models without heater>
D
L
A B C
N
S1
S2
S3
<For models with heater>
D
L
A B C
H
N
S1
S2
S3
A Outdoor unit power supply
B Earth leakage breaker
C Wiring circuit breaker or isolating switch
D Outdoor unit
E Indoor unit/outdoor unit connecting cords
F Remote controller
G Indoor unit
H Heater power supply
* Affix a label A that is included with the manuals near each wiring diagram for the
indoor and outdoor units.
Field electrical wiring
Indoor unit model
Indoor unit power supply (Heater)
Indoor unit input capacity (Heater)
Main switch (Breaker)
Indoor unit power supply (Heater)
Indoor unit power supply (Heater) earth
Indoor unit-Outdoor unit
Indoor unit-Outdoor unit earth
Remote controller-Indoor unit
Indoor unit (Heater) L-N
Indoor unit-Outdoor unit S1-S2
Indoor unit-Outdoor unit S2-S3
Remote controller-Indoor unit
G
L
H B C
N
S1
S2
S3
E
1
F
2
G G G G
S1 S1 S1 S1
S2 S2 S2 S2
S3 S3 S3 S3
E
1 1 1 1
F
2 2 2 2
G G G
L L L
B C
N N N
S1 S1 S1
S2 S2 S2
S3 S3 S3
E
1 1 1
F
2 2 2
PEAD PEHD
~/N (Single) 50
–
Hz, 230 V
*1 – 16A
2 × Min. 1.5
–
1 × Min. 1.5
–
3 × 1.5 (polar) 3 × 1.5 (polar)
1 × Min. 1.5
–
2 × 0.3 (Non-polar) 2 × 0.3 (Non-polar)
*2
*3
– AC230 V
*3
AC230 V AC230 V
*3 DC24 V DC24 V
*3
DC14V DC14V