Guide Specifications—Chilled Water Environmental Control System
Liebert
®
CW
™
System Design Manual 118
4.21 FLOOR STAND—OPTIONAL
The floor stand shall be constructed of a heliarc-welded, tubular steel frame. The floor stand shall have
adjustable legs with vibration isolation pads. The floor stand shall be ____ in. (mm) high.
4.21.1 EC-fan Lowering Jack—Optional
An EC-fan lowering jack shall be supplied to assist the lowering of EC fans from downflow unit into the floor
stand. Only available with downflow units with EC fans and “Under-the-floor” options when floor stands are
selected. Ships with floor stand.
4.21.2 Floor-stand Turning Vane—Optional
A turning vane shall be supplied with the floor stand and shall be designed for the specified floor-stand
height [only available on Downflow units with Forward-curved Blowers].’
4.21.3 Seismic-rated Floor Stand—Optional
The floor stand shall be seismic-rated and shall be bolted to the unit frame.
4.22 RETURN-AIR PLENUM FOR DOWNFLOW UNITS—OPTIONAL
The air plenum shall be constructed of 20-gauge steel, powder coated to match unit color. A door shall be
included in the front of the plenum to enable front filter access. Air shall enter the plenum from the top.
4.23 DISCHARGE AIR PLENUM
FOR UPFLOW UNITS, WITH DISCHARGE GRILLE(S)—OPTIONAL
The air plenum shall be constructed of 20-gauge steel, powder coated to match unit color. Discharge air
grilles shall be painted black and shall be included on the (front), (rear), (left side) or (right side) of the
plenum.
4.24 DISCHARGE AIR PLENUM
FOR UPFLOW UNITS, WITHOUT DISCHARGE GRILLE(S)—OPTIONAL
The air plenum shall be constructed of 20-gauge steel, powder coated to match unit color. Air shall
discharge from the top of the plenum.
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