Face and Bypass Damper Linkage —
All face and
bypass damper sections are shipped completely assembled
and operational. Sizes 07-11 are built as single assemblies.
Sizes 13-61 have two damper assemblies linked by a jack-
shaft. Sizes 74 and 92 have 3 damper assemblies linked by
two jackshafts.
All damper crankarms have 90 degrees of travel from open
to closed. They can be adjusted to suit the actuator location.
The face and bypass operating shaft is extended through
both sides of the unit. Actuators can be linkage connected or
direct connected. For direct conection actuators remove factory-
installed crankcarm. See Table 18 for operating torque
requirements.
Table 18 — Damper Operating Torque (lb-in.)
DAMPER
SECTION
39T UNIT SIZE
07
09
11
13
17
21
26
32
39
49
61
74
92
BOTH DAMPERS
INTERCONNECTED
MXB*
26
35
42
49
66
80
100
122
150
188
232
260
352
FMB*
EACH DAMPER
SEPARATE
MXB*
22
29
35
41
55
67
83
102
125
157
194
217
294
FMB*
EXHAUST AIR
EXB*
22
29
35
41
55
67
83
102
125
157
194
217
294
FACE & BYPASS
FBP
35
45
55
65
85
105
130
160
194
245
305
370
460
ZONE DAMPERS
(see Note 2)
ZDS
12
12
12
12
12
12
12
12
12
12
12
12
12
No. of Zones
5
5
6
7
7
7
8
9
9
11
12
14
14
*Observe the following cautions:
Do not exceed 3 in. wg negative pressure in these damper
sections.
Factory duct collars and damper assemblies are for attach-
ment of ductwork only and must not be used to support the
weight of the duct. Weight bearing deflection can increase
torque necessary to operate dampers, or bind them pre-
venting any movement.
NOTES:
1. Damper shaft moves 90 degrees from open to closed position.
2. Operating torque is shown for one zone. Multiply the value shown
by the number of zones for total with one actuator.
3. See Table 1 for section identification.
44
Содержание 39T
Страница 43: ...Fig 34 Discharge Fabrication Draw Thru Plenum Fans 43 ...
Страница 49: ...Fig 41 Coil Connections and Lifting Points Fig 42 Steam Coil PIping 49 ...
Страница 78: ...Fig 64 Blow Thru Unit Coil Removal Fig 65 Plan View Typical Coil 78 ...
Страница 81: ...Fig 68 Filter Arrangement 2 in and 4 in Flat 81 ...
Страница 82: ...Fig 68 Filter Arrangement 2 in and 4 in Flat cont 82 ...
Страница 83: ...Fig 69 Filter Arrangement Angle Filters 2 in Only 83 ...
Страница 84: ...Fig 69 Filter Arrangement Angle Filters 2 in Only cont 84 ...
Страница 85: ...Fig 70 Filter Arrangement BCF1 Bag or Cartridge Draw Thru 85 ...
Страница 86: ...Fig 70 Filter Arrangement BCF1 Bag or Cartridge Draw Thru cont 86 ...
Страница 87: ...Fig 71 Filter Arrangement BCF3 Bag or Cartridge Blow Thru 87 ...
Страница 88: ...Fig 71 Filter Arrangement BCF3 Bag or Cartridge Blow Thru cont 88 ...
Страница 92: ...NOTE A frame shown shaded Fig 74 Fan Discharge Positions 92 ...
Страница 102: ......
Страница 103: ......
