Installation and Service Manual

INSTALLATION – DOWNWARD DEFLECTOR HOOD
2 6-598.4
Deflector Hood Model Application
The 30°, 60° and 90°, Downward Deflector Hoods are
designed for use installed propeller and blower unit heaters.
Assembly/Installation
The recommended procedure for assembly and installation is
described as follows:
1. Before beginning installation of the accessory hood,
remove all of the spring loaded louver blades from the
unit heater on which the hood is to be installed. For
model sizes 30-155, these blades (except for one) will be
relocated in the face of the hood assembly after the hood
is attached to the unit heater. To remove the spring
loaded louver blades, grasp the blade and apply
pressure against the louver blade retaining spring. After
compressing the spring, the tab on the opposite side of
the blade can be removed from the unit, freeing the
blade from the unit.
Note: Do not to lose the louver blade retaining springs as
they will be required later to install the blades into
the hood assembly.
2. Remove the screw on the right lower face of the unit
(when facing the unit air outlet) and attach the hood right
side panel onto the unit with unit screw previously
removed by screwing through the existing hole.
Figure 2.1 - Hood Exploded View
Figure 2.2 - Hood to Unit Exploded View
3. Insert the hood top panel into the top of the unit air outlet
opening (hemmed edge toward the hood outlet, bent
edge toward the unit) with the right side panel on the
outside of hood right top flange (see Figure 2.1). Fasten
the panels with the #10 x ½” self-drilling screws provided.
4. Attach the hood top to the flange inside the air outlet of
the unit with the #10 x ½” self drilling screws provided,
through the holes in the hood top.
5. Mount the left side hood panel to the hood top with the
screws provided but do not fasten to the unit casing at
this time. Be sure to mount the left side on the outside of
the hood top flanges.
6. Model sizes 175-400 require the installation of a vertical
deflector blade bracket and model sizes 350 and 400
require a horizontal deflector blade bracket cross
member be installed. These are shown in Figure 2.3.
Figure 2.3 – Deflector Bracket and Cross Member
7. In each hood assembly kit for model sizes 30-155 is a
fixed deflector louver blade with serrated tabs at each
end to accept fastening screws (see Figure 2.1). Install
the blade between the outermost hood sides in the
bottom deflector blade position and fasten in place with
#8 x 1” screws provided through the holes in the sides of
the hood and tightening. Locate the blade with the
curved surface up and the rounded corners toward the
outlet of the hood. Rotate the deflector to direct the air
flow in the desired direction, typically perpendicular to the
hood outlet face.
8. Fasten the lower corner of the left side hood to the unit
face with a self drilling screw. For unit sizes 175-400,
ensure that the assembly is square on the opening and
the dimension from the outside edges and to the center
support match those shown in Figure 2.3.
175-400 Units
350-400 Units
Only
15.00” Outside Edge to
Center Support Edge
31.25” Outside Edge to
Outside Edge
Front View