25
3.
ELECTRICAL CONNECTIONS
WARNING:
The Data Aire cooling unit must be connected by a licensed and
qualified electrician. Risk of electrical shock could result in injury or death.
Disconnect all remote electrical power supplies prior to working on the unit.
Follow all local codes.
NOTE:
Disconnect switches are optional.
The disconnect switch when
turned OFF will de-energize the high voltage.
WARNING:
Before proceeding with the electrical connections, make certain
that the volts, hertz and phase correspond to that specified on the unit electri
-
cal nameplate. Use copper conductors only.
3.1 Electrical Service
Check to be sure the electrical service provided by the utility is sufficient to handle the additional load
imposed by this equipment. Most units with secondary heat exchangers will require a separate power
source and field provided interconnecting wires (see Section 0).
Remote condensers will typically require one power source. Glycol systems with fluid coolers and
loose pump(s) typically require one power source for the fluid cooler and will require one additional
source for single pump or two additional sources for dual pumps. Systems where the pump(s) are
mounted and piped integral to the fluid cooler will usually require a single power source.
3.2 Nameplate Ratings
Refer to the unit electrical nameplate for equipment electrical requirements. Minimum circuit ampac-
ity (MCA)
, also known as wire sizing amps, will dictate the minimum required wire gauge. Maximum
Overcurrent Protection (MOP)
device amps will dictate the maximum breaker or fuse size.
3.3 Grounding
The unit cabinet must have an uninterrupted true earth ground. An electrical ground wire of adequate
size must be connected to the ground lug provided inside the main electrical box.
3.4 Voltage Tolerance
The supply voltage
to the unit must be within 10% of the voltage indicated on the unit electrical name
-
plate. The maximum allowable voltage phase to phase imbalance must not exceed 3%. Voltage
imbalance causes high amperage over one or several phases, which in turn leads to overheating and
possible damage. The local utility company should be contacted for correction of improper line volt-
age. Deviation from voltage ratings can cause premature failures and possibly void unit warranties.
Summary of Contents for gForce Ultra
Page 1: ......
Page 58: ...58 8 CONTROLS Refer to dap4 IOM for controls and control logic...
Page 63: ...63...
Page 64: ...gFUltra_IOM 09 2020...
