CeilAir DX Series Betreibershandbuch PDF herunterladen (Seite 21)

(Mar, 2012)

CeilAiR OHS Series Installation, Operation & Maintenance Manual

ir Technology Systems, Inc.

2-10

2.7 Utility Connections

2.7.1 Main Power

The CeilAiR product offering is available in single or

three phase variations and a wide range of voltages.

It is imperative that the unit nameplate be examined

to determine the operating voltage, frequency and

phase of the system (see Figure 5). The nameplate

also provides the full load amps (FLA), the current

the unit will draw under full design load, the minimum

circuit ampacity (MCA) for wire sizing, and the maxi-

mum fuse size (MAX FUSE) for circuit protection.

The unit’s nameplate is located on the outside of the

cabinet within close proximity of the electrical box.

NOTE

If the nameplate states MAX FUSE/CKT BKR, it

is required to use fuses or a HACR type circuit

breaker to protect the system. Other protection

devices are not allowed based upon the product

listing.

The unit is provided with terminals for all required

ﬁ eld-wiring. It is important to identify the options that

were purchased with the unit in order to conﬁ rm

which ﬁ eld connections are required. Refer to the

electrical drawing(s) supplied with the unit for the

power and control ﬁ eld-wiring.

WARNING

Verify power is turned off before making

connections to the equipment.

NOTE

All wiring must conform to local and national

electrical code requirements. Use of copper

conductors only is required. Wiring terminations

may become loose during transit of the

equipment; therefore, it is required to verify that

all wiring terminations are secure.

It is important to verify that the main power supply

coincides with the voltage, phase and frequency

information speciﬁ ed on the system nameplate. The

supply voltage measured at the unit must be within

±10% of the voltage speciﬁ ed on the system name-

plate.

A manual fused disconnect switch must be installed

per local and national electrical codes for service

of equipment. Do not mount a shipped loose

non-fused service switch or customer supplied

Figure 5- Sample Nameplate

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 ... 59 60

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