Drainage Piping Work; Electrical Work; Remote Controller - 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.
7. 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
<B> In case of RP·GA
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 × 2.5 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
s Selecting non-fuse breaker (NF) or earth leakage breaker (NV).
s Always install an earth. (Earth cable size: Thicker than 2.5 mm
s Power supply cords H H H H H of appliances shall not be lighter than design 245
IEC57 or 227 IEC 57.
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
8
2 : polar) to control
2 )
PEAD
–
*1 –
–
–
3 × 2.5 (polar)
1 × Min. 2.5
2 × 0.69 (Non-polar)
*2
*3
–
*3
AC220-230-240 V
*3
DC24 V
*3
DC14V
*1: A breaker with at least 3mm contact separation in each poles shall be provided.
Use non-fuse breaker (NF) or earth leakage breaker (NV).
*2: 10 m wire is attached in the remote controller accessory.
*3: The figures are NOT always against the ground.
S3 terminal has DC24V against S2 terminal. However, between S3 and S1, these
terminals are not electrically insulated by the transformer or other device.
Notes:
1. Wiring size must comply with the applicable local and national code.
2. Power supply cords and Indoor/Outdoor unit connecting cords shall not be lighter
than polychloroprene sheathed flexible cord. (design 245 IEC 57)
3. Install an earth longer and thicker than other cables.

7.2. Remote controller

7.2.1. For wired remote controller
1) Installing procedures
(1) Select an installing position for the remote controller. (Fig. 7-2)
The temperature sensors are located on both remote controller and indoor unit.
s Procure the following parts locally:
Two piece switch box
Conduit tube
Look nuts and bushings
s Remote controller guide
A Remote controller profile
B Required clearances surrounding the remote controller
C Installation pitch
(2) Seal the service entrance for the remote controller cord with putty to prevent
possible invasion of dew drops, water, cockroaches or worms. (Fig. 7-3)
A For installation in the switch box:
B For direct installation on the wall select one of the following:
• Prepare a hole through the wall to pass the remote controller cord (in order to run
the remote controller cord from the back), then seal the hole with putty.
• Run the remote controller cord through the cut-out at top of case, then seal the cut-
out notch with putty similarly as above.
B-1. Route of cord to back of controller:
B-2. Route of cord to top of controller:
(3) For direct installation on the wall
C Wall
D Conduit
E Lock nut
F Bushing
G Switch box
H Remote controller cord
I Seal with putty
J Wood screw
2) Connecting procedures (Fig. 7-4)
1 Connect the remote controller cord to the terminal block.
A To TB5 on the indoor unit
B TB6 (No polarity)
2 Set the dip switch No.1 shown C when using two remote controller's for the same
group.
C Dip switches
Setting the dip switches
The dip switches are at the bottom of the remote controller. Remote controller Main/
Sub and other function settings are performed using these switches. Ordinarily, only
change the Main/Sub setting of SW No.1. (The factory settings are all "ON".)
<SW No. 1>
SW contents Main Remote controller Main/Sub setting
ON/OFF Main/Sub
Comment Set one of the two remote controllers at one group to "Main"
<SW No. 2>
SW contents Main When remote controller power turned on
ON/OFF Normally on/Timer mode on
When you want to return to the timer mode when the power is restored
Comment after a power failure when a Program timer is connected, select "Timer
mode".
<SW No. 3>
SW contents Main Cooling/heating display in AUTO mode
ON/OFF Yes/No
When you do not want to display "Cooling" and "Heating" in the Auto
Comment
mode, set to "No".
<SW No. 4>
SW contents Main Intake temperature display
ON/OFF Yes/No
Comment When you do not want to display the intake temperature, set to "No".