Power Cable Entry; Field Control Wiring; 24 V Power Reserve For The User - Carrier 30XW-PZE Series Installation, Operation And Maintenance Instructions

6 - ELECTRICAL CONNECTION
Table of minimum and maximum connectable wire sections.
Connectable
30XW-PZE /
wire section
30XWHPZE -
Circuit(s) A(/B)
Section
mm² (per phase)
Units without option 150
301
1 x 240
401
1 x 240
451 1 x 240
551 1 x 240
601 1 x 240
651 1 x 240
801 2 x 240/2 x 240
901 2 x 240/2 x 240
1001 2 x 240/2 x 240
1101
2 x 240/2 x 240
Units with option 150
301 1 x 240
401 1 x 240
451 1 x 240
551 2 x 240
601 2 x 240
651 2 x 240
801 2 x 240/2 x 240
901
2 x 240/2 x 240
1001
2 x 240/2 x 240
1101 2 x 240/2 x 240
(1) Connection capacities actually available for each machine, defined according to the connection terminal size, the control box access opening size and the available
space inside the control box.
(2) Selection simultation result considering the hypothesis indicated.
(3) If the maximum calculated section is for an XLPE cable type, this means that a selection based on a PVC cable type can exceed the connection capacity actually
available. Special attention must be given to the selection.
Note: The currents considered are given for a machine equipped with a hydraulic module operating at maximum current.

5.5 - Power cable entry

The power cables can enter the unit control box from above the
unit. A removable aluminium plate on the upper part of the control
box face allows introduction of the cables. Refer to the certified
dimensional drawing for the unit.
The plate fixing on the electrical box as well as the cable passage
through the plate have to be tight.
If not, the differential pressure sensor should not detect the
electrical box fan operating. This will prevent the unit from starting.

5.6 - Field control wiring

IMPORTANT: Field connection of interface circuits may lead
to safety risks: any control box modification must maintain
equipment conformity with local regulations. Precautions
must be taken to prevent accidental electrical contact between
circuits supplied by different sources:
The routing selection and/or conductor insulation
characteristics must ensure dual electric insulation.
In case of accidental disconnection, conductor fixing between
different conductors and/or in the control box prevents any
contact between the conductor ends and an active energised
part.
Calculation favourable case:
Perforated horizontal conduit (standardised
routing No. 15)
(1)
XLPE insulated cable
Section Max. length
(2)
mm² (per phase) m
1 x 50 190
1 x 70 200
1 x 70 175
1 x 95 200
1 x 120 210
1 x 120 200
1 x 70/1 x 70 180/180
1 x 95/1 x 95 230/230
1 x 120/1 x 95 240/230
1 x 120/1 x 120 220/220
1 x 70 200
1 x 95 200
1 x 120 220
1 x 150 210
1 x 185 230
1 x 185 220
1 x 120/1 x 120 250/250
1 x 150/1 x 150 270/270
1 x 185/1 x 150 220/270
1 x 185/1 x 185 220/220
Calculation unfavourable case:
Closed conduit (standardised routing No. 41)
PVC insulated cable, if possible
Section
(2)
Cable type
mm² (per phase)
XLPE Cu 1 x 95
XLPE Cu 1 x 120
XLPE Cu 1 x 150
XLPE Cu 1 x 240
XLPE Cu 1 x 240
XLPE Cu 1 x 240
XLPE Cu 1 x 185/1 x 185
XLPE Cu 1 x 240/1 x 240
XLPE Cu 2 x 150/1 x 185
XLPE Cu 2 x 150/2 x 150
XLPE Cu 1 x 120
XLPE Cu 1 x 185
XLPE Cu 1 x 240
XLPE Cu 2 x 150
XLPE Cu 2 x 185
XLPE Cu 2 x 185
XLPE Cu 2 x 120/2 x 120
XLPE Cu 2 x 150/2 x 120
XLPE Cu 2 x 240/2 x 150
XLPE Cu 2 x 240/2 x 240
Control manual and the certified wiring
Refer to the SmartVu TM
diagram supplied with the unit for the field control wiring of the
following features:
• Customer interlock
• Remote on/off switch
• Demand limit external switch
• Remote dual set point
• Alarm, alert and operation report
• Evaporator pump control
• Heat reclaim condenser pump control (option)
• Hot water valve control (option)
• Various interlocks on the Energy Management Module
(EMM) board (accessory or option)
CCN bus connection
• The permanent connection to the system CCN bus is made
at the terminal provided for this purpose inside the control
box.
• The connection of the CCN service tool is possible at a
socket under the control box, accessible from outside.
All panel feedthrough of control cables have to be tight to allow
electrical box fan operating detection.

5.7 - 24 V power reserve for the user

Control circuit reserve:
After all required options have been connected, the TC transformer
includes a power reserve that can be used for the field control
wiring: 2 A (24 V a.c.) or 48 VA.
Max. length
Cable type
(3)
m
330 PVC Cu
320 PVC Cu
340 PVC Cu
440 PVC Cu
390 PVC Cu
300 PVC Cu
480/480 PVC Cu
500/500 PVC Cu
500/500 PVC Cu
500/500 PVC Cu
320 PVC Cu
360 PVC Cu
400 PVC Cu
380 PVC Cu
400 PVC Cu
340 PVC Cu
370 PVC Cu
370/370 PVC Cu
380/370 PVC Cu
380/380 PVC Cu
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