Field Control Wiring - Carrier AquaSnap 30RB Series Installation, Operation And Maintenance Instructions

The calculations are based on the maximum machine current
(see electrical data tables).
For the accessory system the following standardised instal-
lation methods are used, in accordance with IEC 60364,
table 52C:
No. 17: suspended aerial lines, and No. 61: buried conduit
with a derating coefficient of 20.
The calculation is based on PVC or XLPE insulated cables
with copper or aluminium core. The maximum temperature
is 48°C. The given wire length limits the voltage drop to < 5%.
IMPORTANT: Before connection of the main power cables
(L1 - L2 - L3) on the terminal block, it is imperative to
check the correct order of the 3 phases before proceeding
to the connection on then terminal block or the main
disconnect/isolator switch.
The current values used are given for a unit equipped with
a hydronic kit operating at maximum current.
7.4.1 - power cable entry
The power cables can enter the 30RB control box from
below or from the unit side.
• Unit raised from the ground (e.g. installation on support
rails): It is recommended to enter the power cables from
below the control box. A removable aluminium plate
below the control box allows introduction of the cables.
• Unit placed on the ground (e.g. on a concrete base): It is
recommended to enter the power cables from the
control box side. An aluminium plate on the control box
face allows introduction of the cables. It is important to
check that the power cable bend radius is compatible
with the connection space available in the control box.
Refer to the certified dimensional drawing for the unit.
Table of minimum and maximum wire sections (per phase) for connection to 30RB units
Max. connectable section per phase Min. wire section per phase
30RB Section, mm²
162 1 x 240 or 2 x 150
182 1 x 240 or 2 x 150
202 1 x 240 or 2 x 150
232 1 x 240 or 2 x 150
262 1 x 240 or 2 x 150
302 2 x 240
342 2 x 240
372 2 x 240
402 2 x 240
432 3 x 240
3 x 240
462
522 3 x 240
Circuit a Circuit B Circuit C
602 2 x 240 2 x 240 2 x 185
672 2 x 240 2 x 240 2 x 185
732 3 x 240 3 x 240 2 x 185
802 3 x 240 3 x 240 2 x 185
22
Section, mm²
1 x 50
1 x 50
1 x 70
1 x 70
1 x 95
1 x 120
1 x 120
1 x 150
1 x 185
1 x 185
1 x 240
2 x 95
Circuit a Circuit B Circuit C
1 x 185 1 x 185 1 x 70
1 x 185 1 x 185 1 x 95
2 x 95 2 x 95 1 x 70
2 x 95 2 x 95 1 x 95
7.4.2 - Connection extension box
This accessory permits stripping the power cables before they
enter the control box, and must be used when the cable bend
radius is not compatible with the connection space available
in the control box. The accessory connection extension box
ensures mechanical protection of the stripped cable, before it
enters the control box. It must be used in the following cases:
• Unit placed on the ground and use of power cables
with protective metallic armour.
• Unit placed on the ground and use of power cables
with a section > 250 mm
Supply cable inlet

7.5 - Field control wiring

Refer to the 30RB Pro-Dialog Plus Controls IOM and the
certified wiring diagram supplied with the unit for the field
control wiring of the following features:
• Customer interlock (safety chain)
• Evaporator pump interlock (mandatory)
• Remote on/off switch
• Remote heat/cool switch
• Demand limit external switch 1
• Remote dual set point
• Alarm, alert and operation report
• Evaporator pump control
• Heat reclaim condenser pump control (option)
• Setpoint reset via outside air temperature sensor reset
(0-10 V)
• Various interlocks on the Energy Management Module
(EMM) board (accessory or option)
Max. wire section per phase
Max length, Wire type Section, mm² Max. length,
m
180 XLPE Copper 2 x 70
180 XLPE Copper 2 x 70
215 XLPE Copper 2 x 95
205 XLPE Copper 2 x 95
178 XLPE Copper 2 x 95
197 XLPE Copper 2 x 120
185 XLPE Copper 2 x 150
188 XLPE Copper 2 x 185
190 XLPE Copper 2 x 240
190 XLPE Copper 2 x 240
205 XLPE Copper 3 x 185
190 XLPE Copper 3 x 240
190/155 XLPE Copper 2 x 185/2 x 95 430/325
190/178 XLPE Copper 2 x 185/2 x
150
190/155 XLPE Copper 3 x 185/2 x 95 490/325
190/178 XLPE Copper 3 x 185/2 x
150
.
2
Wire type
m
225 XLPE Aluminium
225 XLPE Aluminium
260 XLPE Aluminium
260 XLPE Aluminium
260 XLPE Aluminium
280 XLPE Aluminium
300 XLPE Aluminium
315 XLPE Aluminium
330 XLPE Aluminium
330 XLPE Aluminium
395 XLPE Aluminium
415 XLPE Aluminium
XLPE Cu/XLPE Al
430/375 XLPE Cu/XLPE Al
XLPE Cu/XLPE Al
490/375 XLPE Cu/XLPE Al