Unitary Products Group
ACCESSORY KIT INSTALLATION INSTRUCTIONS
SUPPLY AIR PLENUM ACCESSORY
MODELS, 1SP0450, 1SP0451, 1SP045
FOR 5 THRU 15 TON SPLIT SYSTEM INDOOR UNITS AND
7-1/2 THRU 15 TON SPLIT-SYSTEM HEAT PUMP INDOOR UNITS
035-16650-001-A-0202
GENERAL
This instruction covers the field assembly and installation of
these supply air plenum accessories.
Each plenum is fully insulated and finished to match the exte-
rior of the indoor unit. All joints are gasketed to provide air
tight seals.
These accessories can be applied with either vertical or hori-
zontal units that will be located in the conditioned space.
They are designed for “free blow” operation and should never
be applied with supply air ductwork.
Their double deflection metal grilles can be adjusted to vary
the throw, spread and drop of the supply air per Table 2.
The Model 1SP0452 plenum accessory has knockouts for
both the power and the control wiring and these knockouts
will always be used because all of the field wiring must be
routed through the plenum panel.
INSTALLATION
SUPPLY AIR PLENUM ACCESSORY MODEL 1SP0450
SUPPLY AIR PLENUM ACCESSORY MODEL 1SP0451
This accessory consists of 5 panels, a support angle and all
screws necessary for assembling the plenum and for
securing it to the unit.
For front air discharge on a vertical unit, assemble the panels
as shown in Figure 1, using the No. 10 x 1-1/4" tapping
screws. Attach the support angle to the bottom of the plenum
with the No. 10 x 1/2" tapping screws. Position the plenum on
top of the unit. Drill 5/32" holes through the unit cabinet using
the holes in the mounting flange and the support angle as
templates. Secure the plenum to the unit with the
No. 10 x 1/2" tapping screws.
NOTE:
Electric Heat is not U.L. approved with the
Supply Plenum Accessory.
TABLE 1: PLENUM ACCESSORY REFERENCE
PLENUM ACCESSORY MODEL #
INDOOR UNIT MODEL #
1SP0450
K*EU060
K*BU060
1SP0451
K*EU090,120
K*ES120
F*EH090,120
K*BU090,120
K*BS120
F*HP*90,120
LA090
FA090
LF-07
FF-07
1SP0452
K*EU180
F*EH180
K*BU180
F*HP*180
LA120
FA120
LF-10
FF-10
1SP0450 - Two Section Grille
1SP0451 -Shown
1SP0452 - Five Section Grille
