Cuisinart EM-100 Installation Manual
Document Number 468292
®
Adjustable Pressure Controller
Field Installation Instructions for EM series Backdraft Damper with
Counterbalance
EM-10 series, Horizontal Mount - Vertical Airflow Up
EM-30 series, Vertical Mount - Horizontal Airflow
EM-40 series, Horizontal Mount - Vertical Airflow Down
Application
The Adjustable Pressure Controller (APC) provides mechanical adjustment of start open pressure for the Greenheck
model EM series damper. The APC is mounted to the bottom frame member (sill) and connects to the bottom blade
linkage pin. Dampers MUST be equipped with blade counterbalance.
The ability to resist damper opening is limited per the table below. Note: Adjustable Pressure Controller (APC) is not
intended to assist in opening blades or to substitute for counterbalance weights. Use one APC assembly per damper panel.
Area Maximum Set Pressure
2
) (m2) (in. wg) (Pa)
(ft
4 0.37 0.75 187
6 0.58 0.50 125
8 0.74 0.40 100
10 0.93 0.30 75
15 1.40 0.20 50
20 1.86 0.15 37
24 2.23 0.125 31
5A
5B
15
16
Item # Part # Description Qty
1 705238 Mounting Bracket 1
2 823936 Control Knob Sub-Assembly 1
3 705241 Release Rod 1
4 653631 ½ in. Non-Knurled Crankarm 1
5A 705239 Connecting Bar (4 1/8 in. long) *
5B 705240 Connecting Bar (3 in. long) *
6 457803 Spring 1
7 457806 3/16 in. E-Clip 1
8 453728 Link Separator Spring -SS 1
9 454092 5/32 in. x 1.5 Roll Pin - SS 2
10 416052 #10-32 x 5/8 in. SS Threadstud 2
11 415991 #10-32 Keps Nut -SS 2
12 415555 #10 x 1/2 in. Tek Screw - ZP 2
13 451588 1/4 in. E-clip- ZP 1
14 451819 1/4 x 1/2 in. Knurl Pin - ZP 1
15 415609 1/4 - 20 x 1/2 in. Threadstud 2
16 415455 1/4 - 20 Spinlock Nut-ZP 2
17 415482 3/16 x 1/2 in. nylon washer 2
18 415483 1/2 in. .030 in. nylon washer 1
19 415484 1/2 in. Push-On Retainer-ZP 1
20 Frame sill of damper
* See page 2 Table for correct connecting bar
14
4
18
17
19
3
6
7
8
9
13
12
11
2
10
1
20
Installation
1. The APC assembly mounts on the inlet (linkage/counterbalance weight) side of the damper. Locate assembly on
damper sill so the crankarm is directly under the damper blade lever arm.
2. The mounting bracket (item #1) is designed so the sloped portion of bracket rests on the outer frame flange, with
the two ears, one on each side, resting on the highest part of the frame.
3. Fasten through ears using two #10 x ½ in. Tek screws, item #12.
4. Use 13/64 drill (5mm) to drill through frame on sloped portion of bracket. If accessible, insert two #10-32 x 5/8
in. threadstuds (item# 10) from the exterior and fasten with two #10-32 Keps nut (item #11). If unaccessible, use
minimum #12 self-threading screws.
5. See table below to determine quantity and combination of connecting links to be used. The longer link is always
to be installed towards the blade (top). Connect link(s) using two 1/4-20 threadstuds (item #15), and nuts (item
#16), with center distance between hole centerlines as indicated. On some short damper heights, only one 5A (4
1/8 in.) or 5B (3 in.) is used. The heads of the threadstuds should be towards the linkage tie bar so the fasteners
do not inhibit opening.
Height
(in.)
10 5.56 5A & B
11 2 5B
12 3.13 5A
13 4 5A & B
14 5.06 5A & B
15 5.25 5A & B
16 2.5 5B
17 3.63 5A
18 4.56 5A & B
20 5.25 5A & B
21 5.56 5A & B
22 4 5A & B
23 5.06 5A & B
24 5.25 5A & B
25 5.25 5A & B
26 5.25 5A & B
27 4.56 5A & B
28 5.25 5A & B
29 5.25 5A & B
30 5.25 5A & B
31 5.25 5A & B
32 5.56 5A & B
33 5.25 5A & B
34 5.25 5A & B
35 5.25 5A & B
36 5.25 5A & B
37 5.25 5A & B
38 5.25 5A & B
39 5.25 5A & B
40 5.25 5A & B
41 5.25 5A & B
42 5.25 5A & B
Center
Distance
Links to
use
Height
(in.)
43 5.56 5A & B
44 5.25 5A & B
45 5.25 5A & B
46 5.25 5A & B
47 5.25 5A & B
48 5.25 5A & B
49 5.25 5A & B
50 5.25 5A & B
51 5.25 5A & B
52 5.25 5A & B
53 5.25 5A & B
54 5.56 5A & B
55 5.25 5A & B
56 5.25 5A & B
57 5.25 5A & B
58 5.25 5A & B
59 5.25 5A & B
60 5.25 5A & B
61 5.25 5A & B
62 5.25 5A & B
63 5.25 5A & B
64 5.25 5A & B
65 5.56 5A & B
66 5.25 5A & B
67 5.25 5A & B
68 5.25 5A & B
69 5.25 5A & B
70 5.25 5A & B
71 5.25 5A & B
72 5.25 5A & B
73 5.25 5A & B
74 5.25 5A & B
Center
Distance
Links to
use
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