Power Cable Access Routing; Field Control Wiring; Electric Power Reserve For The User - United Technologies Carrier 30RQM 160 Installation, Operation And Maintenance Instructions

5 - ELECTRICAL CONNECTION

5.5 - Power cable access routing

The power cables are routed into the electrics box on 30RQM/30RQP
units from underneath.
A removable aluminium plate on the base of the electrical cabinet
provides access for the power cables.
It is important to check that the power cable bend radius is
compatible with the connection space available inside the electrical
cabinet. Refer to the certified dimensional drawing for the unit.
Connection expansion box
This accessory is used to strip the power cable before it is routed
inside the unit's electrical cabinet, and must be used when the
cable bend radius is not compatible with the space available inside
the electrical cabinet. The "connection expansion box" accessory
provides mechanical protection for the stripped cable before it is
routed inside the electrical cabinet.
The use of this accessory is recommended in the following cases:
Unit placed on the ground and use of a steel wired armoured
power cable.
Unit placed on the ground and use of a rigid power cable with a
.
section > 250 mm 2
24

5.6 - Field control wiring

IMPORTANT: Field connection of interface circuits carries
safety risks: any modifications to the electrical box must
ensure that the equipment remains compliant with local
regulations. In particular, precautions must be taken to
prevent accidental electrical contact between the circuits
supplied by different sources:
The choice of routing and/or insulation characteristics of the
conductors ensures double electrical insulation.
The conductors should be fixed together inside the electrical
box to prevent contact between the end of the conductor and
a live part in case of accidental disconnection.
See the 30RQM/30RQP control manual and the certified
electric wiring diagram supplied with the unit for the field
control wiring of the following devices:
- Customer interlock (safety chain)
- Remote on/off switch
- Remote heat/cool switch
- Capacity limit external switch 1
- Remote dual setpoint
- Operating and alarm feedback
- Water heat exchanger pump control
- Various interlocks on the Energy Management Module
(EMM) board (option 156).

5.7 - Electric power reserve for the user

Control circuit power reserve:
After all possible options have been connected, the TC transformer
ensures the availability of 1 A on 24 V, 50 Hz.
With option 284, this CT transformer provides a 230V/50Hz circuit
designed to power laptop battery chargers only (maximum current
of 0.8 A at 230 V).
IMPORTANT: Only connect class I and II equipment to this
power socket.