IDC INDUCED DRAFT EVAPORATIVE CONDENSERS
INSTALLATION
S140-500 IOM (FEB 08)
Page 12
2.3 Eliminator
Placement
Check the placement of the eliminator sections for proper
interlock and eliminate openings, which will allow the escape
of water droplets. Check the orientation of the eliminator
sections to ensure “RIGHT SIDE UP” as shown in
Figure
2-2. Eliminator Orientation Cross Section
. Eliminator
placement is described in greater detail in Section 4 - Main-
tenance.
2.4 Inlet Louver Installation
Install inlet air louvers so that water drains into unit. Louvers
are shipped within the drain pan. Orient the louvers as shown
in
Figure 2-3 Louver Installation
. A slotted holding bracket
slides up to install the louver. The bracket then slides down
to be tightened. It will hold the louvers in place.
Figure 2-2. Eliminator Orientation Cross Section
THIS SIDE FACES UP WHEN INSTALLED ON UNIT
THIS SIDE RESTS ON ELIMINATOR SUPPORTS OF UNIT
Figure 2-3. Louver Installation
2.5 Erecting the IDC Unit
As mentioned above, the pan section is fi rst hoisted into
place and secured to prepared “foundation beams” with ap-
propriate anchoring hardware. Following this procedure, the
Coil/fan Section is hoisted into position and bolted to the Pan
Section’s support posts.
NOTE
:
lifting-cable length is critical as shown in the rig-
ging of the two sections in
Figure 2-4 (a-b). Assembly
and Placement
.
ERECTION NOTES:
1. For extended lifts, use all lifting points and safety slings.
For fi nal placement, use all lifting points.
2. Use spreaders and blocking to protect the fl anges of the
casing and prevent caving in sides.
3. All safety precautions should be vigilantly enforced while
crane is on site. Only properly trained members of the
crane’s crew should handle hook cables, slings, spread-
ers, etc.
2.6 Optional
Vibration
Isolator
Vibration isolators minimize transfer of forces due to vibration/
dynamic loading to or from IDC unit/s. This IDC unit option
requires additional fi eld installation measures.
If vibration isolation is provided (whether furnished by Imeco
or by others) the isolators must always be mounted below
the condenser unit structural “I” beam supports (such that
continuous support of unit, as described above, is provided).
Refer to
Figures 2-5 (a-b) Vibration Isolator Installation
and the following instructions:
ISOLATOR FEET INSTALLATION:
1. Refer to the submitted foundation layout drawing for the
correct location of each isolator and support beams.
2. Place the isolators in their proper location and attach the
bottom plate to the building support steel by means of
bolting or welding.
3. Set unit support beams on top of the isolators and attach
them to the top plate by means of bolting or welding.
4. Lower the fi rst section of the unit onto the beams, taking
care not to overload any one corner.
5. Attach unit to the beam by means of bolting or welding.
6. Continue to attach the remaining unit sections per the
instructions on the previous pages and complete piping,
wiring, etc.
7. Loosen the vertical restraint jam nuts to the end of the
restraint bolts.
8. When the unit is completely installed and operating, turn
the leveling bolts counterclockwise several complete
turns on each isolator until the blocking channel can be
removed by hand. In order to raise the unit uniformly, it
will be necessary to alternate between isolators. Do not
attempt to place all the weight on any one isolator, but
distribute the load proportionally.
9. After the unit is level, tighten the vertical restraining nuts
fi nger tight, then back off one half turn. Lock each nut with
the jam nuts provided.
ISOLATOR RAIL INSTALLATION
1. Refer to the submitted foundation layout drawing for the
correct location of each isolator rail.
2. Place the isolator rail assemblies in their proper location
and attach the bottom plate to the building support steel
by means of bolting or welding.
3. Lower the fi rst section of the unit onto the rails, taking
care not to overload any one corner.
4. Attach the unit to the isolator rail by means of bolting or
welding.
5. Continue to attach the remaining unit sections per the
instructions on the following pages and complete piping,
wiring, etc.
6. Temporarily remove all vertical locknuts from hold-down
bolt.
7. When the unit is completely installed and operating, turn
the leveling nuts clockwise several complete turns on each
isolator until the shim can be removed by hand. It will be
necessary to alternate turns on each isolator to uniformly
raise the unit. Do not attempt to place all the weight on
any one isolator, but distribute the load proportionally.
8. After the unit is level, replace all vertical locknuts on hold-
down bolts and fasten fi nger tight.