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17
5 - ELECTRICAL CONNECTION
Table of minimum and maximum connectable wire sections.
Connectable
wire section
(1)
Calculation favourable case:
Perforated horizontal conduit
(standardised routing No. 15)
XLPE insulated cable
Calculation unfavourable case:
Closed conduit
(standardised routing No. 41)
PVC insulated cable, if possible
61XWHLZE / 61XWH-ZE
Circuit(s) A(/B)
Section
mm² (per phase)
Section
(2)
mm² (per phase)
Max.length
m
Cable type
Section
(2)
mm² (per phase)
Max. length
m
Cable type
(3)
Model
3
1x 240
1 x 95
217
XLPE Cu
1 x 185
390
PVC Cu
5
2 x 240
1 x 185
243
XLPE Cu
2 x 185
418
PVC Cu
7
2 x 240
2 x 120
211
XLPE Cu
2 x 185
294
XLPE Cu
10
2 x 240/2 x 240
1 x 240/1 x 240
251/251
XLPE Cu
2 x 240/2 x 240
366/366
PVC Cu
14
2 x 300/2 x 300
2 x 150/2 x 150
203/203
XLPE Cu
2 x 300/2 x 300
294/294
XLPE Cu
15
2 x 300/2 x 300
2 x 150/2 x 150
294/294
XLPE Cu
2 x 300/2 x 300
294/294
XLPE Cu
17
2 x 300/2 x 300
2 x 150/2 x 150
211/211
XLPE Cu
2 x 300/2 x 300
305/305
XLPE Cu
Model with option 81
10
4 x 240
2 x 240
251
XLPE Cu
4 x 240
377
PVC Cu
14
4 x 300
4 x 150
203
XLPE Cu
4 x 300
294
XLPE Cu
15
4 x 300
4 x 150
294
XLPE Cu
4 x 300
294
XLPE Cu
17
4 x 300
4 x 150
211
XLPE Cu
4 x 300
305
XLPE Cu
61XWHHZE
Model
3
1 x 240
1 x 95
200
XLPE Cu
1 x 185
358
PVC Cu
5
2 x 240
1 x 240
277
XLPE Cu
2 x 185
386
PVC Cu
7
2 x 240
2 x 150
234
XLPE Cu
2 x 240
328
XLPE Cu
10
2 x 240/2 x 240
1 x 240/1 x 240
231/231
XLPE Cu
2 x 185/2 x 185
302
XLPE Cu
15
2 x 240/2 x 240
2 x 185/2 x 185
215/215
XLPE Cu
Not compatible
Model with option 81
10
4 x 240
2 x 185
215
XLPE Cu
4 x 185
302
XLPE Cu
(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 or specified “not compatible”, this means that it exists a risk to exceed the real connection capacity available.
Special attention must be given to the selection.
Note:
The currents considered are given for a machine equipped with a hydronic kit 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.
Refer to the Touch Pilot Control manual and the certified wiring
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.