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COMPONENT
03W
06W
Zone
N/A
12
Damper
Mixing or
13
26
Exhaust Box
Side Mixing or
13
26
Exhaust Box
CD60 / Airflow
Measuring
5/8
8/16
Damper
Integral and
Internal Face
NA/38
150/38
and Bypass
External Face
38/14
38/26
and Bypass
COMPONENT
25T
30W
Zone
N/A
12
Damper
Mixing or
100
94
Exhaust Box
Side Mixing or
99
105
Exhaust Box
CD60 / Airflow
Measuring
29/62
27/57
Damper
Integral and
Internal Face
150/209 150/175 150/249 150/290 150/195 150/309 150/232 300/343 300/251 300/407 300/461 300/304 300/486 300/572 360/634 360/712
and Bypass
External Face
N/A
180/95
and Bypass
NOTES:
1. Damper shaft moves 90 degrees from open to close.
2. Operating torques are shown for one damper. Multiply the value shown by the number of dampers for total with one actuator.
Zone Damper Section
Refer to Fig. 45 and install the section as follows:
1.
Remove the screws holding the zone damper section to the
heating coil section and remove the lag screws holding the
damper to the shipping skid.
2.
Place the supplied 1/4-in. thick x 1-1/2-in. grey foam gasket
around the perimeter of the cooling and heating coil section
discharges. Use two gasket strips on partition panels to obtain
double width.
3.
Rig the zone damper section and lift it into position on (verti-
cal discharge) or next to (horizontal discharge) the gasketed
cooling and heating coil sections.
4.
Fasten the damper section to the coil sections using the sup-
plied 1/4-14 x 3/4-in. sheet metal screws.
5.
Install control shaft and bearing for each individual zone after
cutting
linkage
(for
application).
Control shaft extensions are bagged and wrapped to the
inside of the zone damper blades. Additional field-supplied
shaft extensions may be ordered from local Ruskin supplier,
part no. 10-020569-00B.
6.
Zones should be split for equal airflow through each damper.
CAUTION
Factory duct collars and damper assemblies are for attaching
ductwork only and must NOT be used to support the duct's
weight. Weight bearing deflection can increase torque
necessary to operated dampers, or bind them preventing any
movement.
Table 26 — Damper Operating Torque (in.-lb)
07T
08W
09T
10W
N/A
12
N/A
12
31
32
34
41
33
29
45
37
9/19
10/20
10/21
12/25
150/62 150/100 150/80 150/140 150/103 150/111 150/170 150/175 150/139 150/175 150/155 150/175 150/190 150/175
N/A
80/32
N/A
120/41
30T
35T
36W
37T
N/A
N/A
18
N/A
120
135
143
120
122
150
146
151
35/72
39/81
41/87
35/72
N/A
N/A
203/129
N/A
the
job
specific
39M UNIT SIZE
11T
12T
12W
14W
N/A
N/A
12
12
48
52
41
53
54
54
46
56
14/29
15/31
12/25
21/32
N/A
N/A
150/41
160/54
39M UNIT SIZE
40W
42T
50W
51T
18
N/A
18
N/A
158
134
187
184
161
178
207
178
46/95
45/94
54/112
53/111
224/128
N/A
280/170
N/A
ZONE DAMPER LINKAGE
Note that damper control levers and a common operating bar are
factory installed on upper end of damper shafts on top of zoning
damper assembly. See Fig. 45 and 46. To facilitate the installation
of field-supplied damper operators, the operating bar may be cut
and the control levers repositioned as follows:
Damper operation may be impaired if ductwork is supported
by the unit.
1.
Check job prints to determine number and size of zones
required and damper operator locations.
2.
Cut and remove portion of operating bar between zones as
required.
zone
3.
Install actuators on field-fabricated support brackets. Connect
actuator linkage to the center axle of interconnecting zones.
4.
Adjust actuator for correct damper operation. Be sure actua-
tor, linkage, and dampers operate freely. See Table 26 for
operating torque requirements.
Mixing Box/Filter Mixing Box Damper Linkage
It is important to properly link the outdoor-air and return-air
dampers. Failure to do so may cause mixing problems,
stratification, or coil freezing under some conditions,
especially in combination type filter mixing boxes.
Refer to Fig. 47 for typical damper arrangement and connecting
rod position.
105
16T
17W
18T
21W
N/A
12
N/A
12
55
58
59
70
63
61
66
77
14/34
17/36
17/36
20/42
N/A
180/60
N/A
180/70
58T
61W
72W
85W
N/A
18
N/A
N/A
184
235
187
226
202
248
248
278
53/111
68/141
73/152
84/177
N/A
338/253 546/253 639/295 721/334 819/379
CAUTION
CAUTION
22T
25W
N/A
12
82
77
93
91
24/50
20/46
N/A
180/77
96W
110W
N/A
N/A
226
381
325
369
96/201 109/228
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