Liebert Little Glass House User Manual download pdf (Page 6)

ALCOVE INSTALLATION

ECM ECM/UAS FAC

Rear 12" 12" 12"

Top 12" 12" 12"

Sides 0" 0" 0"

Bottom Non-Restricted

The unit can be rolled forward on casters for

easy access to Liebert and customer wiring at

the rear of the unit. To open the front door,

clearance required depends on the size of your

unit. No side clearance is needed.

For applications requiring more than one

enclosure, an optional Cluster Enclosure is

available. In addition to providing more space

for electronic equipment, this configuration

allows cabinets to be connected side-by-side so

that an ECM, FAC, or UPS can serve more than

one cabinet.

INSTALLATION CONNECTIONS

The Little Glass House is a self-contained unit.

The only required connection is for electric

power. For 60 Hz models, the power cord is 9

(2.7 m) feet long and has a NEMA 120 V~ plug,

sized for current (Amps) based on equipment

specified when ordered. For 50 Hz models, a

power cord is included for connection to a

customer supplied plug. The 60 Hz ECM-80

model uses two input power connections, with

one 20 Amp plug for the ECM-80 and the other

plug either 15 or 20 Amps depending on the

UPS model. Refer to table on page 11. The

LGH and its protected equipment should be on a

dedicated circuit and circuit breaker.

Do not defeat ground/earth connections

between the utility/mains outlet and the Little

Glass House. All plug receptacles/sockets in

the vicinity of where the LGH will be used must

be a ground/earth type and grounded/earthed

with an insulated ground/earth conductor of

identical size, insulation material, and thickness

to the grounded/earthed and

ungrounded/earthed supply conductors which is

grounded/earthed to ground/earth at the service

equipment or separately derived source.

NOTE: The utility/mains output must have the

neutral and ground/earth bonded, per the

National Electrical Code, to prevent damage to

the UPS. Damage related to faulty utility/mains

wiring is not covered by Liebert warranty.

Contacts are provided to annunciate two alarms:

High Temperature (100°F - 38°C internal, Back-

up Cooling Fan operating) and Dirty Air Filter

(filter is clogged and requires cleaning).

Customer connection is two compression lug

terminals inside the rear of the unit. These

normally open contacts are rated for 40

milliAmps at 30 volts maximum (Class 2 wiring).

A contact is provided on the rear of the ECM to

indicate power to the compressor (Compressor

on/off). This normally open contact is rated for

0.5 Amp at 120 V~.

A control contact is provided inside the ECM

(under access plate at top left rear) for remote

shutdown/ startup. To use, replace jumper on 37

and 38 with a normally open non-powered

switch, rated for 5 Amps at 120 V~.

To allow communications between the UPS and

a LAN server or other computer system, the

available UPStation GXT is equipped with an

RS-232 interface port. Other UPS

communication options are available, including

SNMP. Refer to the separate UPS manual for

details.

The optional SiteNet™ Integrator is a separate

rackmount unit which communicates status of

the UPS and Little Glass House (including

temperature/humidity and several contact

closures) in SNMP protocol to a network

management system.

No plumbing connections are required as ECM

condensate is evaporated into the heat rejection

airstream. A condensate drain tube (3/8 inch

O.D. copper) is provided with ECM, but a

customer connection is not necessary. The

drain connection may need to be used in

exceptional situations, such as if a door is left

open for longer than 15 minutes while the ECM

is operating.

INSTALLING CUSTOMER EQUIPMENT

The Little Glass House can accommodate rack

mounted or freestanding computer and network

equipment. The unit contains 19 or 24 inch

punched rack rails (per EIA 310), depending on

model selected. Rack rails are provided at the

front and rear of the enclosure. Mounting

hardware available from your Liebert

representative includes a fixed shelf, a pullout

shelf, 19 inch to 24 inch rack rail adapters,

threaded adapters, adjustable position rack rails

and Compaq® adapters. Each optional kit is

supplied with installation hardware.

To maintain unit center of gravity as low as

possible, install customer equipment from the

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Liebert Little Glass House User Manual Page 6

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