Connecting The Fans - Carrier 39CP Installation, Operation And Maintenance Instructions

Air handling unit
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7 - CONNECTIONS
7.5.2 - Connecting the 25A / 32A / 63A / 100A switches/circuit breakers
■ The cable used must be shielded to connect and ensure continuity of the disconnect switch/circuit breaker shielding.
■ Use the jumper supplied at delivery; insert the cable via the supplied packing box then affix the jumper (on the cable shielding) to
the shielding plate in the switch.
Jumper to be fitted on the
cable shielding.

7.6 - Connecting the fans

■ Electrical danger:
- Work on the electrical components must only be carried out by an electrician or technician with the relevant training in this field,
under the supervision of an electrician and in accordance with industry practice.
- When selecting the cables, take into account the routing, the ambient operating temperature and the current of the connected
motor(s). Follow the recommendations in the regulations section when selecting components and cables.
- The selection, securing and mechanical and electrical protection of cables must conform to the regulations and laws at the
installation site.
7.6.1 - EC motor
All EC fan motor assemblies are supplied wired on the motor side, with cables wound on the front panel, ready for field connection.
Refer to the connection instructions for EC fans.
■ Connecting the EC fan:
"D1" digital input for authorisation (ON / OFF device)
Electronic cut-out via volt-free contact to the "D1" - "+24 V" terminals (input resistance and voltage range Technical data).
Function in Factory settings for "D1":
- Unit "ON" with contact closed.
- Unit "OFF" when the contact is open.
The "K1" relay remains armed, connections 11 - 14 are bridged. Status Out with flashing code: |1| (Diagnostic / Disruption).
STD packing box for field
connection (not shown)
Disconnect switch with
shielding plate
STD packing box
37

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