Connecting Power Cables And Communications Cable; Connecting Power Cable For Condenser - Vertiv Liebert CRV CCD25 User Manual

Vertiv™ Liebert® CRV CCD25 and CCD35 Condensers User Manual
CAUTION: Before cutting into low ambient kit or condenser factory piping, ensure that the nitrogen holding
charge has been released.
NOTE: Isolate piping from building using vibration isolating supports. Prevent the dust, water vapor and solid
particles from entering the copper pipes.
NOTE: All the joints of the refrigerating pipes must be silver-brazed.
NOTE: Use a flow of dry nitrogen through the piping during brazing to prevent formation of copper oxide scale inside
the piping. When copper is heated in the presence of air, copper oxide forms. PVE oils will dissolve these oxides from
inside the copper pipes and deposit them throughout the system, clogging filter driers and affecting other system
components.
To identify pipe sizes, refer to Vertiv™ Liebert® CRV CRD25 and CRD35 Row-Based Cooling System User Manual.
To identify the installation height of the condenser, refer to Vertiv™ Liebert® CRV CRD25 and CRD35 Row-Based Cooling
System User Manual.

4.5 Connecting Power Cables and Communications Cable

WARNING! Arc flash and electric shock hazard. Can cause serious injury or death. Disconnect all local and
remote electric power supplies and wear appropriate, OSHA-approved personal protective equipment (PPE)
per NFPA 70E before working within the electric control enclosure. Customer must provide earth ground to
unit, per NEC, CEC and local codes, as applicable.
WARNING! Risk of improper wire sizing/rating and loose electrical connections. Can cause overheated wire
and electrical connection terminals resulting in smoke, fire, equipment and building damage, injury or death.
Use correctly sized copper wire only and verify that all electrical connections are tight before turning power
On. Check all electrical connections periodically and tighten as necessary.
NOTE: Install a manual, electrical-disconnect switch within 1.6 m (5 ft) of the condenser and in accordance with local
codes.
NOTE: Wiring should be protected from touched heated surfaces like refrigeration piping and any heated surface to
avoid damaging the wiring insulation.
NOTE: The power supply wiring of the unit should be installed by a professional licensed electrical contractor in
accordance to local electrical codes.
NOTE: The power supply wires for the outdoor unit are L+N+PE. The recommended wire size for the power supply
cable is no less than 16 AWG (1.5 mm

4.5.1 Connecting Power Cable for Condenser

Power is supplied to the condenser from the evaporator. Connect one end of the power supply cable to the outdoor breaker
in the evaporator side, and the other end to the circuit breaker in condenser side.
Connecting power cable for condenser CCD25
1. In evaporator CRD25 (used with condenser CCD25), open its rear door and remove filters. The outdoor breaker
is located under the electric control box 1.
20
2
).
4 Installation