IMPORTANT — READ BEFORE INSTALLING
1. Read and become familiar with installation instruc-
tions before installing accessory economizer.
2. Be sure installation conforms to all local and national
codes.
SAFETY CONSIDERATIONS
Recognize safety information. This is the safety-alert symbol
( ). When you see this symbol on the unit and in instruc-
tions or manuals, be alert to the potential for personal
injury.
Understand the signal words — DANGER, WARNING and
CAUTION. These words are used with the safety-alert sym-
bol. Danger identifies the most serious hazards which will
result in severe personal injury or death. Warnings, on the
other hand, could result in personal injury. Caution is used
to identify unsafe practices which would result in minor per-
sonal injury or product and property damage.
WARNING:
Before performing service or mainte-
nance operations on unit, turn off main power switch
to unit. Electrical shock could cause personal injury.
INSTALLATION
WARNING:
Turn off unit power! Electrical shock and
personal injury could result.
Install economizer damper assembly as follows:
1. If base unit is installed and in operation, turn off all
power to unit.
2. Remove filter access panel then remove 25% air/
economizer hood. See Fig. 2 and 11.
3. Remove and discard 25% outdoor-air damper section.
Save screws. See Fig. 3.
4. Remove and discard shorting plug located in left front
of return-air compartment and behind unit control box.
See Fig. 3.
5. Remove economizer damper assembly from shipping car-
ton. Remove economizer control box cover. See Fig. 4.
6. Slide economizer into unit opening as shown in Fig. 5.
Package Contents
ITEM # ITEM NAME ITEM # ITEM NAME
1 Frame, Middle 32 Connector, Wire
2 Frame, Bottom 33 Motor, Damper
3 Frame, Top 34 Screw (40)
4 Frame, Side 35 Screw (4)
5 Frame, Side 36 Wire Tie (3)
6 Frame, Middle 37 Bolt, Capscrew (4)
7 Channel, End 38 Washer, Lock (4)
8 Channel, Support 39 Washer, Plate (4)
9 Channel, End 40 Nut (4)
10 Blade, Damper (6) 41 Control
11 Blade, Damper (2) 42 Shaft
12 Thermistor 44 Shield
14 Screw (16) 46 Seal Strip
15 Screw (2) 47 Seal Strip (4)
16 Bar 49 Channel
17 Bar 50 Seal Strip (4)
18 Rod, Linkage 52 Seal (4)
19 Bracket, Sensor 54 Switch, Temp
20 Bearing (12) 55 Plug Asy
21 Shaft (3) 56 Wire Asy
22 Shaft (6) 57 Wire Asy
23 Lever, Damper (5) 58 Wire Asy
24 Screw, Hex Head (5) 59 Wire Asy
25 Nut (5) 60 Wire Asy
26 Pin (4) 61 Wire Asy (2)
27 Cotter Pin (4)
28 Washer (3)
29 Linkage (2)
30 Bushing, Snap (2)
NOTE: If quantity of item is more than one, number of items is listed in parenthesis after the item
name. Example: Screw (16). See Fig. 1 for economizer details.
installation instructions
ACCESSORY INTEGRATED
ECONOMIZER
P/N 389041-201
542F, 559D,
579D, 599D
Cooling Sizes
150, 180 & 216
Cancels: 40579DP426-B IIK 559D-150-1
3/2/92
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