Mitsubishi Electric Mr.Slim PEA-RP100, Installation Manual

Page: 17 / 24

17
8.1. Power supply
8.1.1. Indoor unit power supplied from outdoor unit
[Fig. 8-1] (P.5)
Ⓐ Outdoor unit power supply
Ⓑ Earth leakage breaker
Ⓒ Wiring circuit breaker or isolating switch
Ⓓ Outdoor unit
Ⓔ Indoor unit/outdoor unit connecting cords
Ⓕ Remote controller (option)
Ⓖ Indoor unit
Field electrical wiring
Indoor unit model PEA
Wiring Wire No.
×
size (mm
2
)
Indoor unit power supply (Heater) –
Indoor unit power supply (Heater) earth –
Indoor unit-Outdoor unit 3
×
1.5 (polar)
Indoor unit-Outdoor unit earth 1 × Min. 1.5
Remote controller-Indoor unit *1 2 × 0.3 (Non-polar)
Circuit rating
Indoor unit (Heater) L-N *2 –
Indoor unit-Outdoor unit S1-S2 *2 230 V AC
Indoor unit-Outdoor unit S2-S3 *2 24 V DC
Remote controller-Indoor unit *2 14 V DC
*1. The 10 m wire is attached in the remote controller accessory. Max. 500 m
*2. The figures are NOT always against the ground.
S3 terminal has 24 V DC against S2 terminal. However between S3 and S1, these terminals
are not electrically insulataed 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 unit/outdoor unit connecting
cords shall not be lighter than polychloroprene sheathed flexible
cord. (Design 245 IEC57)
3. Install an earth longer than other cables.
• PEA-RP∙GAA has two power boards and two control boards respectively.
(AB in Fig. 8-1)
Check the wiring details on the plate affixed to the unit and be sure not to wire
incorrectly.
• PEA-RP∙GAA has two control boards. Therefore, “No.1” unit or “No.2” unit is
displayed on the remote controller when an initial setup is performed or an error
occurs.
Control Board A is not always No.1 unit and Control Board B is not always No.2
unit. Check the both control boards in case of a malfunction of the fan motor or
the sensor.
• Connect the connectors of external input/output devices to the circuit board to
which the remote controller is connected.
8. Electrical work
8.2. Indoor wire connection
Please identify the model name of the operation manual attached on the terminal
block box with that shown on the rating name plate.
1. Remove the screw (2pcs) holding the cover to dismount the cover.
[Fig. 8-2-1] (P.6)
Ⓐ Screw holding cover (2pcs) Ⓑ Cover
2. Open knockout holes
(Recommend to use a screwdriver or the like for this work.)
[Fig. 8-2-2] (P.6)
Ⓒ Terminal block box Ⓓ Knockout hole
Ⓔ Remove
3. Fix indoor unit/outdoor unit connecting wire to terminal block box by using buffer
bushing for tensile force. (PG connection or the like.) Connect remote controller
cable to terminal block through the knockout hole of terminal block box using
ordinary bushing.
[Fig. 8-2-3] (P.6)
Ⓕ Use PG bushing to keep the weight of the cable and external force from being applied to
the power supply terminal connector. Use a cable tie to secure the cable.
Ⓖ Indoor unit/outdoor unit connecting wire Ⓗ Use ordinary bushing
Ⓘ Remote controller cable Ⓙ Tensile force
[Fig. 8-2-4] (P.6)
Ⓚ Terminal block for indoor/outdoor unit connecting wire
Ⓛ Terminal block for remote controller cable
4. After wiring is complete, make sure again that there is no slack on the
connections, and attach the cover onto the terminal block box in the reverse
order of removal.
Warning:
• Attach the electrical part cover securely. If it is attached incorrectly, it could
result in a fire, electric shock due to dust, water, etc.
• Use the specified indoor/outdoor unit connecting wire to connect the
indoor and outdoor units and fix the wire to the terminal block securely so
that no stress is applied to the connecting section of the terminal block.
Incomplete connection or fixing of the wire could result in a fire.
• Do not pinch the cables or wires when attaching the terminal block box
cover. Doing so may cause a risk of disconnection.
• When accommodating the terminal block box, make sure that the connectors
on the box side are not removed. If removed, it cannot operate normally.
[Fig. 8-2-5] (P.6)
Ⓐ Indoor terminal block
Ⓑ Earth wire (green/yellow)
Ⓒ Indoor/outdoor unit connecting wire 3-core 1.5 mm
2
or more
Ⓓ Outdoor terminal block
Ⓔ
Power supply cord : 2.0 mm
2
or more
① Connecting cable
Cable 3-core 1.5 mm 2 , in conformity with Design 245 IEC 57.
② Indoor terminal block
③ Outdoor terminal block
④ Always install an earth wire (1-core 1.5 mm
2
) longer than other cables
⑤ Remote controller cable
Wire No
×
size (mm
2
) : Cable 2C
×
0.3
This wire accessory of remote controller
(wire length : 10 m, non-polar. Max. 500 m)
⑥
Wired remote controller (option)
⑦ Power supply cord
Cable 3-core 2.0 mm 2 or more, in conformity with Design 245 IEC 57.
• Perform wiring as shown in [Fig. 8-2-5] (P.6) . (Procure the cable locally.)
Make sure to use cables of the correct polarity only.
• Connect the terminal blocks as shown in
[Fig. 8-2-5] (P.6)
.
Caution:
• Use care not to make mis-wiring.
• Firmly tighten the terminal screws to prevent them from loosening.
• After tightening, pull the wires lightly to confirm that they do not move.
8.3. Remote controller (wired remote controller (option))
8.3.1. For wired remote controller
1) Installing procedures
(1) Select an installing position for the remote controller.
The temperature sensors are located on both remote controller and indoor unit.
Procure the following parts locally:
Two piece switch box
Thin copper conduit tube
Lock nuts and bushings
[Fig. 8-3-1] (P.7)
Ⓐ Remote controller profile
Ⓑ Required clearances surrounding the remote controller
Ⓒ
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. 8-3-2] (P.7)
Ⓐ
For installation in the switch box:
Ⓑ 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 upper case, then seal the cut-out notch
with putty similarly as above.
Ⓒ Wall Ⓖ Switch box
Ⓓ Conduit Ⓗ Remote controller cord
Ⓔ Lock nut Ⓘ Seal with putty
Ⓕ Bushing Ⓙ Wood screw
B-1. To lead the remote controller cord from the back of the controller:
B-2. To run the remote controller cord through the upper portion:
(3) For direct installation on the wall
2) Connecting procedures
① Connect the remote controller cord to the terminal block.
[Fig. 8-3-3] (P.7)
Ⓐ To the terminal block on the indoor unit
Ⓑ TB6 (No polarity)
② Set the dip switch No.1 shown below when using two remote controller’s for the
same group.
3) Function selection of remote controller
If two remote controllers are connected, set one to “Main” and the other to “Sub”.
For setting procedures, refer to “Function selection of remote controller” in the
operation manual for the indoor unit.