Specifications

GUIDE SPECIFICATIONS 7-46 kW DX units

• Master unit fail safe mode allows slave units to revert their self control mode

T. No Water Flow Alarm - Unit shall be furnished with a NEMA 1 ﬂ ow switch for ﬁ eld mounting into the chilled water piping to

the unit. Upon a loss of water ﬂ ow the unit control panel shall indicate “No Water Flow” and alarm shall sound.

U. Cable Type Water Detection Sensor - Units shall be provided with cable type water detection system designed to detect the

presence of water anywhere along the cable. Cable shall be mounted on the ﬂ oor under the unit. Sufﬁ cient length of cable shall

be supplied to completely surround the perimeter of the unit so that water coming from anywhere within the unit will not escape

detection. The water detector shall become an integral part of the microprocessor panel and shall display “WATER DETECTED

IN UNDER FLOOR AREA” message and activate an audible alarm when the sensor is activated.

V. Discharge Plenum - Up ﬂ ow units shall be equipped with an 18” tall discharge plenum with factory installed double deﬂ ection

front discharge grille. Plenum shall be constructed of minimum 18 gauge steel, lined with 1” 1.5 pound per cubic foot insulation

and painted to match the cabinet of the computer room air conditioning unit.

a. Discharge Plenum Side Discharge Grilles: Provide discharge grilles on ___ right side and ___ left side.

b. Extended Return Air Plenum: Down ﬂ ow units shall be equipped with a four-sided inlet plenum on the return to extend

the return air opening of the unit. Plenums shall be of sufﬁ cient height to penetrate the lay-in ceiling. If lay-in ceiling is

not used plenum height shall sufﬁ cient to extend the return air opening to within 10” of the deck above or 6 feet which-

ever is shorter.

Plenum shall not be insulated, constructed of minimum 18 gauge steel and painted to match the color of the unit on which it is

mounted

W. Hot Water Reheat - Reheat will be provided by hot water coil with 1/2” copper tubes and aluminum ﬁ ns rated for a maximum

working pressure of 300 PSI. Reheat circuit shall include a factory mounted 2-way hot water valve for temperature control. Coil,

control valve and controls as required for a functioning system shall be factory mounted.

X. Steam Reheat - Reheat will be provided by steam coil with 1/2” copper tubes and aluminum ﬁ ns rated for a maximum work-

ing pressure of 300 PSI. Reheat circuit shall include a factory mounted 2-way steam valve rated at 20 psi close off pressure for

temperature control. Coil, control valve and controls as required for a functioning system shall be factory mounted. Steam strainer

and trap are required and shall be furnished and piped by the installing contractor.

1.11 WARRANTY

A. All parts in the unit shall be warranted to be free from defects in material or workmanship for Eighteen (18) months, from date

of shipment. Parts that fail during this period shall be repaired or a new part supplied by the manufacturer at no cost to the owner.

B. Manufacturer’s warranty shall be for parts only. Labor is not included.

C. (Optional) Extended Compressor Warranty – In addition to the manufacturer’s standard compressor warranty, the compres-

sors shall be provided with an extended warranty for a period of Forty-Two (42) months or a total of Five (5) years. The warranty

shall be for the replacement of compressors only (labor is not included).