Specifications

27
ENVISION COMMERCIAL SPECIFICATION CATALOG
Installing Horizontal Units
Remove and discard the compressor hold down shipping
bolt located at the front mounting bracket prior to setting
the unit in place. Horizontal units are available with side
or end discharge and may be field converted from one
to the other by replacing the discharge panel with a new
panel which must be ordered separately. Horizontal units
are normally suspended from a ceiling by four or six 3/8˝
diameter threaded rods. The rods are usually attached to
the unit by hanger bracket kits furnished with each unit.
Lay out the threaded rods per the dimensions below.
Assemble the hangers to the unit as shown. Securely
tighten the brackets to the unit using the weld nuts
located on the underside of the bottom panel. When
attaching the hanger rods to the bracket, a double nut
is required since vibration could loosen a single nut. To
allow filter access, one bracket on the filter side should be
installed 180° from the position shown in the figure below.
NOTE: The unit should be pitched approximately 1/4˝
towards the drain in both directions to facilitate the
removal of condensate.
Use only the bolts provided in the kit to attach hanger
brackets. The use of longer bolts could damage
internal parts. Some residential applications require the
installation of horizontal units on an attic floor. In this
case, the unit should be set in a full size secondary drain
pan on top of a vibration absorbing pad. The secondary
drain pan prevents possible condensate overflow or water
leakage damage to the ceiling. The secondary drain pan
is usually placed on a plywood base isolated from the
ceiling joists by additional layers of vibration absorbing
material.
Insulate supply plenum and use at least one 90° elbow
and flexible duct collar to reduce noise.
CAUTION: Do not use rods smaller than 3/8˝ diameter
since they may not be strong enough to support the unit.
The rods must be securely anchored to the ceiling.
Envision Application Notes cont.
Insulate first 4´ of supply
plenum & provide one 90° elbow
Flexible duct collar
Optional insulated
Return Air
Hanger brackets (4 or 6)
Building water loop
Hose Kit
Acoustic lining
to elbow
Disconnect
Threaded rod
Line Voltage