Specifications

42
OPTIONS
Remote Temperature and Humidity Sensors
Units shall be provided with remote temperature and humidity sensors. Sensors shall be provided in a plastic case for remote
mounting. 25 feet of shielded cable shall be provided for fi eld wiring.
Disconnect
The environmental control unit shall include a non-automatic disconnect switch mounted in the high voltage section of the electri-
cal panel. The operating mechanism shall prevent access to the high voltage electrical components until switched to the “OFF”
position. The operating mechanism shall protrude through the decorative door.
Smoke Detector
The environmental control unit shall be provided with a smoke detector. The smoke detector shall be mounted with a sensing ele-
ment in the return air stream. When the smoke detector is activated, it shall immediately shut down the unit.
High Effi ciency Filters
The environmental control unit shall include 60% effi cient fi lters (based on ASHRAE Std. 52.1-1992). The fi lters shall be four
inch (4”) deep pleated design.
Pre-Filters
The environmental control unit shall include one inch (1”) pre-fi lters.
Upfl ow Plenum
Units with top (upfl ow) discharge shall be provided with a plenum. The plenum shall have a front discharge air grille and be fully
insulated with one inch (1”) thick, 1-1/2 pound density insulation coated with neoprene. The plenum height shall be 18 inches and
shall be painted to match the unit color.
Floorstand
Each unit shall be provided with a fl oor stand and vibration isolation pads. The fl oor stand shall be a complete welded base engi-
neered to support the operating unit. The fl oor stand height shall be ___ inches, adjustable ± 2 inches.
Floorstand with Turning Vane
Each unit shall be provided with a fl oor stand with factory installed turning vane and vibration isolation pads, The fl oor stand
shall be a complete welded base engineered to support the operating unit. The fl oor stand height shall be ___ inches, adjustable
± 2 inches.
Leveling Jackstands
Each unit shall be provided with adjustable length jackstands complete with base and locknuts capable of supporting the operating
unit. Provide vibration isolation pads.
Condensate Pump
Each unit shall be provided with a unit mounted and wired condensate pump. The condensate pump shall be complete with sump,
motor, and automatic control. The capacity shall be 40 GPH minimum (including check valve) @ 20 feet head pressure.
Water Regulating Valve
Water cooled units shall be provided with a 3-way head pressure actuated regulating valve. The maximum water pressure shall
be ___ psi.
Glycol Pump Package
Provide a centrifugal pump to circulate water or glycol solution. The pump shall be rated for ___ GPM @ ___ feet of head and
operate on ___. The environmental control unit shall be provided with a smoke detector. The smoke detector shall be mounted
with the sensing element in the return air stream. When smoke volts, ___ phase, ___ hertz. It is recommeded on units with dual
pump applications that a 3-way water regulating valve be used in lieu of the standard 2-way valve.
Pump Auto-Changeover
On dual pump packages provide a pump auto-changeover control and a NEMA 4 fl ow switch. The pump auto-changeover control
shall be factory mounted and wired in the dry cooler control box. The pump auto-changeover control shall provide automatic