1. Heavy-duty, corrosion-resistant galvanized steel welded housing.
2. Welded structural steel frame construction.
3. Internal structural steel framework and exterior skin are welded together
4. Welded blade airfoil fan wheel.
5. Less maintenance downtime - Fan bearings with L-10 rated life of over 100,000 hours.

1. Improved indoor air quality - Helps dilute and expel airborne contaminants making exhaust systems operate more efficiently
2. Heating and ventilation flexibility - System can be designed to automatically modulate outdoor air, return air and/or discharge air volume to meet application needs
3. Consistent temperatures and less stratification - Optional cooling effectively reduces indoor air temperatures to help keep people and processes productive
4. Ease of management and control - Optional computer-based Infinity-Pro Controls provide system information easily and effectively
5. Cost savings - Heating systems deliver 100% of the heat generated into the building resulting in energy savings

1. System that puts 100% of the available heat in the airstream, no exhaust flue = energy savings.
2. 30:1 fully-modulating burner that maintains 100% combustion efficiency
3. Energy efficient airfoil fan wheel, delivering quieter operation & requiring lower HP motors.
4. Electric spark ignition system
5. Compliance to ETL per ANSI Z83.18 or Z83.4 standards
6. Unit that uses up to 50% less energy
7. Remote Control Panel for easy operation and remote temperature adjustment
8. Electronic fuel modulation providing immediate response
9. Operation of fan only in warm weather to enjoy free ventilation cooling
10. Positive low-fire start
11. High temperature and low temperature automatic shutdown
12. Fused primary circuits

1. Large tooled access doors for easy access to blower, motor, drives and burner
2. Number-coded wires and terminal strips
3. Blower installed downstream of burner for convenient access
4. One power and gas connection
5. Hoisting eyes for lifting and placing components
6. Field start-up checklist and rigging manual

• Discharge plate or heads with optional motorized blades
• Roof curbs, mounting legs and service platforms
• Outdoor air filters, filter mix boxes and inlet hoods/plenums (High efficiency filtration available)
• Class II and III fan wheels / aluminum wheels and inlet cones
• Double-wall, high temperature and stainless steel cabinet construction
• Premium-efficiency motors
• Low-leakage dampers
• Usable with high external static and high gas inlet pressures
• Variable frequency drive

The units feature the RAPID^® ICS Digital controls. These controls can monitor, diagnose, log and report on more than thirty functions including temperature, humidity and building pressure. The Windows™ - based system is extremely user-friendly with interactive displays that simplify initial air handler setup and changes to units in operation.

1. Module can monitor, diagnose, log and report on more than 30 functions including temperature, humidity and building pressure
2. Windows™ based displays simplify and set up changes
3. Hourly collection of air handler data allows trending and in-depth analysis
4. Compatible via modem or internet with Bacnet®, ModBus®, N2Bus®, Lonworks®, etc. systems

1. Low-temperature automatic shutdown
2. Space temperature control for added comfort
3. 7-day time clock
4. Remote Control Panel with burner and blower switches for easy operation
5. Mild weather stat
6. Dynamic Building Pressure Control

RAPID^® 4000-Series evaporative cooling system is an economical solution. It requires no air-cooled condenser, chiller or cooling tower, chilled water pumps or distribution piping/insulation, major motor control center or electrical gear. Operating costs are a fraction of similar-capacity mechanical refrigeration systems.

Evaporative cooling works when warm air passes over specially treated wetted media. The heat passes from the air to the wetted media, causing the water to evaporate and inside air to cool.

For situations requiring temperature and humidity levels lower than the performance parameters available with outdoor air alone or with evaporative cooling, RAPID™ 4000-Series offer a broad range of cooling options.

Cooling options can be added by simply installing one of our coil sections equipped with the appropriate cooling coils and a condensing unit or chiller. The versatility afforded by the coil section enables you to utilize DX refrigerant, chilled water or other types of cooling coils in your system.