STULZ CyberRow DX Series Installation, Operation & Maintenance Manual
2-10
2.9 Utility Connections
2.9.1 Main Power
The
CyberRow
product offering is available in single
or three phase variations and a wide range of volt-
ages. It is imperative that the unit nameplate be
examined to determine the operating voltage, fre-
quency and phase of the system (see Figure 6). 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 Condition-
ing, Refrigeration) breaker size (MAX FUSE/CKT
BKR) for circuit protection. The unit’s nameplate is
located inside the cabinet within 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 protec-
tion devices are not allowed based upon the
product listing.
Figure 6- Sample Nameplate
The unit is provided with terminals for all required
fi eld-wiring. Refer to the electrical drawing supplied
with the unit for all power and control fi eld-wiring. It is
important to identify the options that were purchased
with the unit in order to confi rm which fi eld connec-
tions are required.
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 equip-
ment; therefore, it is required to verify that all
wiring terminations are secure.
WARNING
Verify power is turned off before making con-
nections to the equipment.
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
nameplate except for 208/230V single-phase units
which have a different tolerance listed below.
A main distribution panel must be provided with a
manual fused disconnect switch or HACR type circuit
breaker per local and national electrical codes for
service to the equipment. Do not mount a customer
supplied manual fused disconnect switch or HACR
type circuit breaker to the surface of the unit.
The unit is provided with main power and control pilot
holes for connection of the fi eld-wiring conduit. These
pilot holes are located on the
CyberRow
unit based
on the confi guration. The pilot holes are located in
the top of the cabinet or in the fl oor 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 service
disconnect switch, located within the electric box. A
separate equipment ground lug is provided within the
electrical box for termination of the earth ground wire.
CAUTION
Prior to unit operation, an adequate unit-to-
earth ground must be connected to the unit.
Summary of Contents for CyberRow DX CRS-042-G
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