gForce Ultra IOM
20
Figure 5 Typical Return & Discharge Air Distribution
There may be additional support required in the form of adjustable jack stands. These are adjustable,
threaded leveling rods which support the unit in each of the corners and in the center on longer length
units. Tighten the locknuts provided with each jack stand. The base plate can rest on the floor or on
vibration pads.
Floor stand are also a way of supporting the unit. These are ordered to the height of the raised floor
with leveling rods to allow adjustment. The floor stand has lips in each corner to align with the unit which
is placed on top. It is recommended that the unit frame be bolted or screwed to the floor stand from
below. Local building codes may dictate this procedure. After installation, the raised floor is typically
built around the unit.
The raised floor serves as the distribution plenum for air on downflow units. Cables, piping, wiring
raceways, inadequate floor height and any other restrictions can inhibit proper airflow. Care should be
taken to avoid restrictions.
Verify that the raised floor has b
een properly sized for the unit’s airflow and the room is free of airflow
restrictions. Perforated floor tiles in the raised floor should ensure minimal pressure loss. The raised
floor must provide a minimum of 12” (305 mm) clearance. Ensure that there is adequate clearance
above the unit for service, such as replacing filters. Optional return air plenums are available for
downflow unit ducting.
Upflow Units
Upflow units will typically be supported by vibration isolation pads and/or floor stand which may also
include leveling legs. An air discharge plenum may be factory provided which ships loose and must be
attached at the top of the unit frame. For in-room applications with supply and return grilles, several
feet of clearance must be maintained at the intake and discharge of the unit.
Alternately, an air distribution plenum must be field fabricated with supply grilles to distribute the air. If
a common plenum is utilized to connect the supply air for distribution from multiple units, it is
Summary of Contents for gForce Ultra
Page 1: ......
Page 123: ...gForceUltraIOM_11 2022 docx...
