Greenheck Fan HRE-20, HRE-90, HRE-45, HRE-55 specs

WATER CONTROL OPTIONS FOR EVAPORATIVE COOLING

Auto Drain and Fill with Freeze Protection

This system will automatically drain the sump tank and fill it with fresh water at the field adjustable intervals, typically once every 24 hours. This flushes mineral build-up and debris from the tank to promote low maintenance and increase media pad life. In addition, the system will protect the evaporative cooler from freezing by draining the sump tank and supply line when the outside temperatures fall below the set point of the outside air sensor. Typically, this is set at 45º to 50º F. The auto drain and fill control box should be installed in an area that is shaded from direct sunlight so the outside air sensor probe will detect an accurate air temperature.

Plumbing (see FIGURE 9)

1.Run water supply line to the unit and install Water Supply Solenoid Valve (A) in this line as close to the water source as possible.

2.Install Drain Solenoid Valve (B) in the supply line as indicated below. From the outlet on the drain valve, run line to a suitable drain location.

3.Run an unobstructed drain line from the sump overflow to the drain as shown below.

4.Install Sump Drain Solenoid Valve (C) in the drain line from the sump as indicated below. From the outlet on this drain valve, run a line to a suitable drain location.

Note: Water Supply Solenoid Valve

(A)is not the same as the Drain Solenoid valves (B) and

(C).Make sure to use the proper valve for each location. Check your local code requirements for proper installation of this type of system. Additional drain and supply plumbing may be needed to meet your local code.

Caution: All solenoid valves A, B, and C must be installed below the roof to protect the supply water line from freezing. If these valves cannot be installed below the roof, an alternate method must be used to protect these lines from freezing.

Side of HRE Unit
Sump Drain Pipe	Evaporative
	Evaporative
	Cooling
Sump Overflow Pipe	Media
	Sump
	Roof Curb

Roof Line

Sump Drain

Solenoid

Valve (C)

	Water Supply
	Solenoid Valve (A)
	Drain
	Solenoid
Trap	Valve (B)
Trap	Supply Line

Drain

Line

HRE-55, HRE-45, HRE-90, HRE-20 specifications

The Greenheck Fan HRE series, specifically the models HRE-20, HRE-90, HRE-55, and HRE-45, represents a blend of innovation and efficiency in the HVAC industry. Built for both commercial and industrial applications, these exhaust fans stand out due to their robust design and advanced operational features.

One of the main features of the HRE series is its energy-efficient motor design. These fans come equipped with a premium efficiency motor that reduces energy consumption while maintaining high performance. The motors are specifically designed to provide exceptional airflow while operating at lower sound levels, ensuring a quieter environment.

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Another significant characteristic of the HRE series is its durability. Constructed from high-quality materials, these fans are built to withstand harsh environmental conditions and prolonged usage. The robust casing and corrosion-resistant finishes ensure longevity, reducing the need for frequent repairs or replacements.

In terms of installation and maintenance, the HRE series offers significant advantages. The fans are designed for easy installation with clear mounting instructions. Additionally, maintenance procedures are simplified, allowing for hassle-free access to critical components, which reduces downtime and operating costs.

Technologically, the HRE models incorporate advanced controls and monitoring systems. These systems can offer real-time feedback on operational performance, allowing for proactive maintenance and energy management. Integrated controls can be customized to work with building management systems, providing users with seamless integration and control capabilities.

Overall, the Greenheck Fan HRE-20, HRE-90, HRE-55, and HRE-45 exemplify a commitment to quality and efficiency in commercial and industrial ventilation solutions. Their combination of energy efficiency, advanced design, durability, and user-friendly features make them a leading choice for those seeking reliable airflow solutions. These fans not only meet current industry standards but also set a benchmark for performance and innovation in the HVAC sector.