Guide Specifications
2.7High Pressure Chilled Water Control Valve—Optional
The chilled water circuit shall include a
2.8A-Frame Chilled Water Coil
The cooling coil shall be of
deep.
The coil shall be controlled by a
(CMH).
The water circuit shall be designed to distribute water into the entire coil face area. The coil shall be supplied with ____ °F (°C) entering water temperature, with a ____ °F (°C) temperature rise. The coil
shall require ____ GPM (l/s) of chilled water and the pressure drop shall not exceed ____ PSI (kPa).
The entire coil assembly shall be mounted in a stainless steel condensate drain pan.
For models CW106 and CW114, the end sheets shall be aluminum, and the coil can be removed from the front or either side of the unit.
2.9Flow Switch—Optional
The flow switch shall activate the alarm system should the chilled water supply be interrupted. The switch shall be factory mounted and wired.
2.10Variable Speed Drive—Optional
A variable speed drive (VSD) is available for models CW106 and CW114 to reduce energy consump- tion. The fan motor speed shall be varied from 100% to 60% of rated speed in response to room condi- tions. This shall be controlled automatically by the Liebert iCOM control. The variable speed drive option shall be available with an infrared humidifier.
2.11Optional Components
The computer room environmental control system shall be equipped with the following optional com- ponents.
2.11.1Disconnect Switch—Non-Locking Type
The manual disconnect switch shall be mounted in the high voltage section of the electrical panel. The switch shall be accessible with the door closed.
2.11.2Disconnect Switch—Locking Type
The manual disconnect switch shall be mounted in the high voltage section of the electrical panel. The switch shall be accessible from the outside of the unit with the door closed, and prevent access to the high voltage electrical components until switched to the “OFF” position.
2.11.3High Temp Stat
The high temp stat shall immediately shut down the environmental control system when activated. The high temp stat shall be mounted in the electrical panel with the sensing element in the return air.
2.11.4Condensate Pump, Dual Float
The condensate pump shall have a minimum capacity of 100 GPH at 20 ft. (378 l/hr at 6m) head. (Consult factory for 200V or 230V, 50 Hz applications.) It shall be complete with integral float switch, pump and motor assembly, and reservoir. Secondary float shall shut down unit if tripped.
2.11.5Liebert
Provide ____ (quantity) solid state water sensors under the raised floor.
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