Reznor REC (Evaporative Cooling) Unit Installation Manual - Manual (Page 2)

Form I-REC, P/N 16021R3, Page 2
1.0 General 1.1 General Information
Reznor ® Model REC Evaporative Cooling Module is designed as a free standing mod-
ule with duct flanges for connection upstream from an air moving device. The Model
REC cooling module may be connected to a Reznor indirect-fired makeup air system,
a Reznor ® Model ADF, ADFH, or RDF direct-fired makeup air system, a Reznor ® blower
cabinet, or to some other type of indirect-fired system or blower cabinet within the
allowable CFM range. Model REC is not recommended for connection to direct-fired
makeup air systems other than Reznor ® Models ADF, ADFH, or RDF.
IMPORTANT: Do NOT connect a Model REC to a blow-through system.
NOTE: This product and these instructions are designed for use in an outdoor installa-
tion. The module may be adapted to an indoor makeup air application.
1.2 Warranty For warranty information, refer to the warranty form included in the “Owner’s Enve-
lope”.
1.3 Installation
Preparation
Check List
 Make certain the installation complies with all local, utility, and national building
and safety regulations and codes.
 Check module for shipping damage. If damage is found, document the damage
with the transporting agency and immediately contact your Reznor Distributor.
 Check base package against parts list below:
Description 40 50 60 70 80 90 180 360
Side Support (2)107227 (4)107227
Front & Rear Support (2)106086 (2)106087 (2)106088 (2)106089 (2)106090 (2)107235 (4)107235
Leg (2 pcs per leg) (8)107236 (16)107236
Duct Connection Angle (1)106095 (1)106096 (1)106097 (1)106098 (1)106099 (1)106100 (1)111501 (2)111501
Hardware: (10 each Sizes 40-180; 20 each Size 360) 1/4-20x3/4” Lg Cap Screw, P/N 16246, and 1/4-20 Hex Nut, P/N 10650
In addition, the following parts for making electrical and water connections may be
shipped in the bottom pan of the evaporative cooling module.
REC Size and
Type of Media
40 50 60 70 80 90 180 360*
lbs kg lbs kg lbs kg lbs kg lbs kg lbs kg lbs kg lbs kg
12” (305mm) cellulose 184 83 212 96 237 108 270 122 295 134 318 144 431 195 862 390
12” (305mm) glass fiber 201 91 230 104 261 118 296 134 305 138 350 159 514 233 1028 466
* A Size 360 is two separate Size 180 evaporative cooling modules.
Qty P/N Description
1 105945 1/4" Hose I.D. x 1/2" N.P.T. Bleed Line Fitting (not used with AquaSaver timed
metering system)
2 16835 Bushings, Heyco #SR-7W-2
 If optional equipment will be field installed (Moisture Elimination Pads for Size 180
or 360 and/or a Drain and Fill or Freeze Protection Kit for any size), parts will be
shipped separately. Check to be sure that options are available for installation.
 If the REC evaporative cooling module is being added to an existing makeup
air system, make certain that the system has sufficient motor capacity for the
increased static pressure. (See Appendix, page 12.)
 Make certain the roof (or supporting structure) is capable of handling the additional
load of a cooling module with a full reservoir. (See weights in table.)
1.0 General ................................................................. 2
1.1 General Information ........................................2
1.2 Warranty ............................................................2
1.3 Installation Preparation Check List ................2
2.0 Dimensions .......................................................... 3
3.0 Mechanical ........................................................... 3
3.1 Assembly Instructions .....................................3
3.2 Water Flow Controls and Connections ..........5
5.0 Adjust Water Flow Over Media ........................... 8
4.0 Electrical Connections ....................................... 8
6.0 Maintenance and Service ................................... 9
6.1 Media Pads........................................................9
6.2 Water Feed Line & PVC Distribution Piping 10
6.3 Water Pump and Inlet Basket Screen ...........10
6.4 Troubleshooting Chart ..................................11
APPENDIX ................................................................ 11
Dimensions - Model REC 360 ..............................11
Cross-Reference Application Chart ....................11
Pressure Drop Table - REC Sizes 40-180 ...........12
Index ......................................................................... 12
INSTALLATION RECORD ....................................... 12
Table of Contents
Weight of Evaporative
Cooling Module with Wet
Media and Full Reservoir