Reznor REC (Evaporative Cooling) Unit Installation Manual - Manual (Page 4)

Form I-REC, P/N 16021R3, Page 4
End
Rail
Top Leg Flange
Fasten Two
Leg Halves
Side
Rail
FIGURE 3A -
Assembling Base
for Evaporative
Cooling Module
Adjustable Leg Height
16” (406mm) Maximum
9” (229mm) Minimum
FIGURE 3B - Assembled Base for Model
REC Evaporative Cooling Module
3.1.2 Installation
Instructions for
Optional Moisture
Elimination Pad,
Option ASA1 - REC
Size 180 and Size 360
If optional moisture elimination pads are included, they will be factory installed on
Sizes 40-90. On Sizes 180 and 360, the optional moisture elimination pads are
shipped separately for field installation. Follow these installation instructions. On Size
360, procedure applies to both modules. If not field installing this option, continue to
Paragraph 3.2.
Media pads must be removed to install the moisture elimination pads. Check the parts
with the list on the left. Follow the instructions in FIGURES 4A, 4B, and 4C to remove
the media, install the moisture elimination pads, and reassemble the unit.
Remove Media Pads (FIGURE 4A)
1) Remove the three sheetmetal screws that hold the top pad retainer.
Release the top pad retainer from the cooling module.
2) Remove the three sheetmetal screws that hold the bottom pad retainer.
Release the bottom pad retainer from the cooling module.
3) Disengage the screen retainers from the sides of the media.
Remove the inlet screen from the cooling module.
4) Slide all media pads horizontally away from cooling module until clear of bottom
reservoir pan.
Field Installed Components -
Moisture Elimination Pad
for REC 180 and 360
Qty* P/N Description
2 106049 Pad with Frame and
Screen
11 11813 Sheetmetal Screws
4 107248 Catch Pad Clamp
Add the Cooling Module - Carefully lift the pre-
assembled evaporative cooling module from both
ends and place into the center of the base assem-
bly being sure the airflow direction is correct.
Cooling module must be level and all bolts in the
base must be secure.
Transition Duct - Connect the evaporative cooling module to the blower by means
of a field-supplied transition duct. See FIGURE 2 for minimum length of field-supplied
ductwork. From a top view, the transition duct must be symmetrical to the evaporative
cooling module. The evaporative cooling module is equipped with duct flanges for con-
nection of ductwork.
Determine Base Location and Attach Rails - Position the four assembled legs in
a rectangular pattern corresponding to the size of the cooling module ( FIGURE 1).
Consider minimum length of transition duct ( FIGURE 2) when positioning the cooling
module base. Depending on the type of roof, it may be necessary to set the legs on a
weather-resistant, solid wood, or metal base. Module must be level.
Place rail sides on the
inside of the top flange of the leg assemblies. Using the bolts
and nuts provided, bolt the side rail to the top three holes located on the legs just
below the top flange. Repeat on the remaining three legs. Tighten nuts securely.
Place the rail ends on the
inside of the top flange of the leg assemblies. Bolt the end
rail to the top three holes located on the legs just below the top flange. Repeat on the
remaining three legs. Tighten nuts securely.
3.0 Mechanical
(cont’d)
3.1 Assembly
Instructions
(cont’d)
3.1.1 Base, Cooling Module, and Transition Duct (cont’d)
*Double quantities for Size
360 which is two Size 180
modules.