NEC EXPRESS800, Service Manual

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2-10 Planning Your Site
The air conditioner’s capacity must be larger than the sum of the above items.
Use Table 2-3 to calculate calorific values – in BTUs.
Table 2-3. Calculating Total Calorific Values
Component BTU/hr Times Number
Installed Equals
Basic System Unit (typical) 2048
Disk Expansion Unit (typical) 853
UPS 375
Monitor
8-Port Concentrator 410
Total
Electrical Facilities
Depending on whether data availability is critical to your application or not,
when you configured your system, you chose either an uninterruptible power
source or a power distribution unit to supply rack components with AC power.
The AC supply lines required by each of these devices is specified in the
following paragraphs.
Uninterruptible Power Source (UPS)
If you have purchased one or more UPSs to supply AC power to your system
and your system is located in North America, each UPS requires a 3-wire
30-Amp single-phase 120 Volt receptacle within six feet of the rear of the
system rack. The UPS power cord comes equipped with a NEMA L5-30P power
connector.
If your system is located in Europe, it requires a 240 Volt receptacle. The UPS
power cord comes equipped with an IEC-320-C20 power connector.
Power Distribution Unit (PDU)
If you have purchased one or more PDUs, each PDU requires a 3-wire 30-Amp
single-phase 120 Volt (240 Volt in Europe) receptacle within 10 feet of the rear
of the system rack. The UPS power cord comes equipped with a NEMA L5-30P
power connector (US models).