Test Run; Connecting A Home Automation Device - Panasonic CU-5E34NBE-C Technical & Service Manual

Regulations on wire size differ from locality to locality. For field
wiring requirements, please refer to your local electrical codes.
Make sure that the installation fully complies with all local and
national regulations.
(1) Remove access panel "C" and the terminal cover. (Fig. 32)
(2) Connect the inter-unit wiring and power line according to
the drawing on the panel side.
(3) Be sure to size each wire allowing approx. 10 cm longer
than the required length for wiring. Store excess wiring
inside the cabinet.
(4) When connections are completed, check that all
connections are correct as shown in the wiring
system diagram on panel side.
(5) Be sure to ground the unit according to your local codes.

6. Test Run

Performing a test run
Refer to the test run procedures in the indoor unit
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installation manual.
Perform the test run separately for each connected
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indoor unit. If 2 units are operated simultaneously, it
is not possible to correctly check for errors in tubing
and wiring.
If the room temperature is 15°C or below, it may not
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be possible to check for tubing errors with cooling
operation. If this occurs, perform heating operation for
each unit individually, and check that warm air is dis-
charged from each unit. If there is cold air mixed in
with the warm air, check the tubing connections again.

7. Connecting a Home Automation Device

The HA (white) 4P terminal is located on the indoor
unit PCB. If a HA device will be used, connect it to this
terminal.
Also, refer to Section 9. Electric Wiring Diagram in the
outdoor unit installation manual.
Terminal cover
Checking tubing and wiring
Perform the test run and check that operation is nor-
mal. If there is an error in tubing or wiring, the refriger-
ant may flow to indoor unit B when indoor unit A is
operated (for example).
CAUTION
Stop operation immediately if there is an error in
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tubing or wiring. Turn the power (leakage breaker/
fuse link) OFF, and check whether the inter-unit
cables are connected incorrectly, or whether the
narrow tubes A and B are connected in reverse.
Correct the connections.
If there is an error in tubing, pump-down must be
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performed. Be sure to perform pump-down. After
making corrections, again purge the air from the
tubes.
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Cabinet
Access panel C
Fig. 32