CeilAir CW series Návod k obsluze stáhnout pdf (Strana 21)

(©July, 2008)

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 maximum

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 cir-

cuit breaker to protect the system. Other pro-

tection devices are not allowed based upon the

product listing.

The unit is provided with terminals for all required field-

wiring. It is important to identify the options that were

purchased with the unit in order to confirm which field

connections are required. Refer to the electrical

drawing(s) supplied with the unit for the power and

control field-wiring.

WARNING

Verify power is turned off before making connec-

tions to the equipment.

NOTE

All wiring must conform to local and national elec-

trical code requirements. Use of copper conduc-

tors 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 specified on the system nameplate. The

supply voltage measured at the unit must be within

±10% of the voltage specified 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 disconnect switch

Figure 5- Sample Nameplate

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

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