CyberOne EC CW IOM Manual
12
2.7.2 Humidifier
CyberOne EC CW systems optionally include an electrode
steam humidifier. The humidifier empties into the condensate
drain line during the flush/drain cycle. A water supply line
must be connected to the ¼” O.D. copper tubing
connection supplied by the factory. Refer to the installation
drawing supplied with your unit for the location of the
water supply connection. The humidifier requires normal
tap water for the water supply. If the supply water is high in
particulates an external filter may be needed.
CAUTION
Do not use demineralized water in the humidifier.
Refer to the humidifier operator’s manual, supplied with the
equipment, for complete manufacturer’s information on the
humidifier and the supply water recommendations.
2.8
Utility Connections
2.8.1
Main Power
The CyberOne EC CW uses three phase power in a range
of voltages. The operating voltage, frequency and phase
provided to the unit must match the specifications on the
unit nameplate (See Figure 8). 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 or HACR (Heating, Air
Conditioning, Refrigeration) breaker size (MAX FUSE/CKT
BKR) for circuit protection. The unit’s nameplate is located
inside the electrical box.
The unit is equipped with terminals for all required field-wiring.
Refer to the electrical drawing supplied with the unit for all
power and control field-wiring. It is important to identify the
options that were purchased with the unit in order to confirm
which field connections are required.
NOTE
If the nameplate states MAX FUSE/CKT BKR,
fuses or an HACR-type circuit breaker must be
used to protect the system. Other protection
devices are not allowed based upon the product
listing.
The unit is provided with main power and control pilot holes for
connecting field-wiring conduits. These pilot holes are located
on the CyberOne EC CW unit based on the configuration. On
an upflow unit, the pilot holes are located in the top of the
cabinet. On a downflow unit, they are located in the floor of
the cabinet. A label stating “MAIN POWER INPUT” is placed
in close proximity. See the installation drawing provided with
your unit for pilot hole locations. Terminate the main power
wires at the line side of the main power service disconnect
switch located in the electric box. A separate equipment
ground lug is provided in the electrical box for connecting
an earth ground wire.
NOTE
Use only copper conductors in wiring connections.
Wiring terminations may become loose during
transit of the equipment; therefore, verify that all
wiring terminations are secure.
WARNING
Verify power is turned off before making
connections to the equipment.
A main distribution panel must be provided with a manual
fused disconnect switch or HACR-type circuit breaker for
service to the equipment, per local and national electrical
codes. Do not mount a customer supplied manual fused
disconnect switch or HACR-type circuit breaker to the surface
of the unit.
Figure 8. Sample Nameplate
