The Reznor’s Model REC Evaporative Cooling Module for Makeup Air
The Reznor Model REC evaporative cooling module is designed as a freestanding module with duct flanges for connection upstream from an air moving device. The Model REC cooling module may be connected to any Reznor indirect-fired makeup air system, a Reznor direct-fired makeup air system, a Reznor blower cabinet or to some other type of makeup air heating system or blower cabinet within the allowable CFM range. The evaporative cooling module provides excellent comfort cooling at low initial equipment and installation costs and low operating and maintenance costs.

This type of evaporative cooling works on the principles that water in direct contact with a moving airstream will eventually evaporate if the droplets have long enough exposure and that evaporation will lower the air temperature. To increase the droplet exposure to the moving airstream, wetted cellulose media is used to retain the water in order to allow time for evaporation. The Model REC evaporative cooler has standard 6” rigid cellulose media. Optional 12’’ cellulose media; 6” or 12” rigid glass fiber media are available. The addition of an optional moisture elimination pad allows for use of the evaporative cooling module at higher air velocities.

The thermally protected water pump features a heavy duty, fan cooled motor with moistureproof windings along with a corrosion resistant one-piece motor shaft. The snapout base allows for simple access to the impeller for easy cleaning. The pump is wired to allow for manual or automatic thermostat switching to call for cooling.

Standard equipment includes an electrically activated, pump-protector, float switch to ensure that an adequate amount of water is in the reservoir prior to the pump being energized. An automatic float and constant bleed line maintains the proper reservoir level while allowing the appropriate bleed-off to prevent accumulation of scale deposits including calcium and magnesium salts. The optional Aqua Saver® water metering system is designed to decrease water usage by automatically regulating water flow by time and temperature and to decrease maintenance requirements by eliminating the pump and float switches.

Standard Features:
● Easily accessible, self-cleaning, high-efficiency evaporative media of 6” rigid cellulose media
● Thermally protected water pump
● Electrical motor-protection float switch with stainless steel arm
● Float valve and bleed line
● 115 volt supply voltage
● Terminal block wiring
● Overflow and drain connections in cabinet bottom (1/2’’ pipe or standard hose thread)
● 300 Series Grade stainless steel water reservoir
● Weatherized cabinet with mesh intake screen
● Adjustable legs

Optional Features:
● Stainless steel cabinet
● 12” rigid cellulose media, 6” or 12” rigid glass fiber media
● Moisture elimination pad
● 208 or 230 volt power supply capability
● Automatic fill and drain kit
● Aqua Saver® water metering system
● Water Hammer Arrestor