Leading Power Line And Transmission Line; Field Line Connection: Transmission Wiring - Panasonic URBAN MULTI U-8ME4XPQ Manuel D'installation

8.6.

Leading power line and transmission line

Be sure to let the power line and the transmission line pass
through a conduit hole.
Lead the power line from the upper hole on the left side plate,
from the front position of the main unit (through the conduit hole
of the wiring mounting plate) or from a knock out hole to be
made in the unit's bottom plate. (See figure 16)
1 Electric wiring diagram. Printed on the back of the electric
component box lid.
2 Power wiring and ground wiring (inside conduit).
(When the wiring is routed out through the lateral panel.)
3 Transmission wiring
4 Pipe opening
5 Conduit
6 Power wiring and ground wiring
7 Cut off the shaded zones before use.
8 Through hole cover
9 Electric component box (1)
10 Electric component box (2)
Precautions when knocking out knockout holes
To punch a knockout hole, hit on it with a hammer.
After knocking out the holes, we recommend you paint the
edges and areas around the edges using repair paint to prevent
rusting.
When passing electrical wiring through the knockout holes,
remove any burrs from the knockout hole edges. Wrap the wiring
with protective tape in order to prevent damage to the wires, put
the wires through field supplied protective wire conduits at that
location, or install suitable field supplied wire nipples or rubber
bushings into the knockout holes.
1 2
1 Knockout hole
2 Burr
3 If there are any possibilities that small animals enter the system
through the knockout holes, plug the holes with packing materials
(to be prepared on-site).
Use a power wire pipe for the power wiring.
Outside the unit, make sure the low voltage electric
wiring (i.e. for the remote control, between units, etc.)
and the high voltage electric wiring do not pass near
each other, keeping them at least 50 mm apart.
Proximity may
malfunctions, and breakage.
Be sure to connect the power wiring to the power
wiring terminal block and secure it as described under
"8.8. Field line connection: power wiring" on page 13.
Inter-unit wiring should be secured as described in
"8.7. Field line connection: transmission wiring" on
page 12.
• Secure the wiring with the accessory clamps so
that it does not touch the piping and no external
force can be applied to the terminal.
• Make sure the cover and wiring are in their correct
place and close the cover firmly.
Installation manual
12
3
cause electrical interference,
8.7.

Field line connection: transmission wiring

(See figure 17)
1 Electric component box (1)
2 Electric component box (2)
3 Never connect the power supply wire
4 To outdoor unit of other system
5 Use duplex wires (no polarity)
6 HR unit
7 Indoor unit
8 Indoor unit (cooling only)
The Q1 and Q2 (to multi unit) terminals of the electric
component box (1) are connected to the Q1 and Q2 terminals of
the electric component box (2) by internal transmission wiring.
Do not remove the internal transmission wiring.
The wiring to other systems must be connected to the F1/F2
(Out-Out) terminals of the P-board in the outdoor unit to which
the interconnecting wiring for the HR unit or indoor units is
connected.
Fixing transmission wiring (See figure 21)
Inside switchbox
1 Fix to the indicated plastic brackets using field supplied clamping
material.
2 Wiring between the units (Outdoor - outdoor) (F1+F2 right)
3 Wiring between the units (Indoor - outdoor) (F1+F2 left)
4 Internal transmission wiring (Q1+Q2)
5 Plastic bracket
6 Field supplied clamps
When connecting wires to the terminal block on the PC-board, too
much heat or tightening could damage the PC-board. Attach with
care.
See the table below for the tightening torque of the transmission
wiring terminals.
Screw size
M3.5 (A1P)
Tightening torque (N•m)
0.80~0.96
U-8~16ME4XPQ
Urban Multi air conditioner
4PW40726-1A