What is a Johnson Air Rotation® System?



Heating



Specifications for Heating

Heating Unit Features

Heating Efficiency Comparison



Cooling



Specifications for Cooling

Cooling Unit Features

Cooling Efficiency Comparison



Heating & Cooling

Specifications

Unit Features

Efficiency Comparison



Johnson Air Rotation® 
Optional Features



Industry-Specific Applications

 Heating Unit Features

Johnson Air Rotation® heating units are constructed of heavy gauge, painted galvanized structural steel and can handle capacities up to 7,000,000 BTUH and air volumes up to 200,000 CFM. The stainless steel indirect-fired heat exchanger delivers 80% combustion efficiency.

Our units are wired and piped at the factory (except main regulator and main gas valve) and are factory tested for sound and start-up. All units are UL® listed and feature a one-year parts warranty.

Optional features include outdoor construction; steam, hot water or electric coils; customized condensation control; 24/7 setback clocks; sound reduction packages and more.

Fact Sheet
Johnson Air Rotation® Heating Unit Features

Standard Features:
  • Heating capacities up to 7,000,000 BTUH
  • Air volumes up to 200,000 CFM
  • Heavy gauge, painted galvanized structural steel frame construction
  • Stainless steel indirect-fired heat exchanger – 83% combustion efficiency
  • 100% system efficiency
  • Insulated fan and heater section
  • Wired and piped at factory (except main regulator and main gas valve)
  • High temperature limit switch; heat on/off switch
  • Flame failure alarm horn (gas and oil units only)
  • Control circuit and power fusing; UV flame detection
  • Low fire start; occupied thermostat
  • Rear fan failure light (double fan units only)
  • Single-point power hook-up
  • Non-fused motor disconnect switch; motor starter and overload protection
  • Key lock power and control panels
  • Long lasting paint finish; hinged access door
  • UL listed; 1 year parts warranty
  • Factory-tested for sound and start-up
Available Optional Features:
  • Outdoor construction
  • Double wall cabinet construction
  • Direct expansion or chilled water cooling coils with stainless steel drain pan
  • Heating also available with steam, hot water or electric coils
  • Filters: Duralast, aluminum mesh, pleated or oil mist filters
  • Evaporative cooling systems
  • 24-hour, 7-day night setback clock
  • Sound reduction package
  • Seismic certifications
  • Customized condensation control package
  • Ultra-violet light for bacterial elimination
  • Make-up air assemblies, make-up air on/off switch
  • Make-up air indicator light
  • Make-up air damper potentiometer; motorized inlet dampers
  • Unoccupied thermostat
  • Smoke detectors or tie-in with other fire protection system
  • FM or IRI manifolds
  • Heat outlet extensions
  • Access platforms
  • UL listed flue system
  • Chillers
  • Condensing units
  • Field startup supervision by factory technician
  • Rigging and installing supervision
  • Extended warranty
Johnson Air Rotation® Heating Unit Benefits

1. Operating and System Efficiency
  • Lower temperature rise between inside roof and outdoor temperatures means less heat escapes from the building thus reducing fuel consumption
  • Utilizes heat generated in the building from lights, machinery, people and other sources of heat gain in the space, thus reducing the amount of fuel required to condition the space
  • Neutral or positive pressure system – Maintains the conditioned air in the space
  • Fuel consumption is drastically reduced by continuous heating of warmer room air versus much colder outside air
  • High-efficiency fans utilize low motor-horsepower
  • Most efficient system in industry: uses a fraction of the fuel and electricity of competitive equipment.
  • Maintenance of the Johnson Air Rotation® System, done at floor level, is easy and inexpensive compared to the high cost of maintaining roof-top equipment during hot summers or cold winters.
2. Controlled and Uniform Temperatures
  • Provides even temperatures in space, typically +/- 1 degree
  • Eliminates air stratification and associated condensation
  • Eliminates drafts and cold spots in the space
  • Available with condensation control package
  • Available with humidifiers
  • Tightly controlled temperatures and humidity levels prevent product damage
3. Long Equipment Life
  • Heavy duty construction
  • Easy to maintain
  • Side access door and walkway plank for easy maintenance of heat exchanger coils, fans and motors
  • Filters at floor level are easy to maintain and replace
  • Tube access cover doors to service heat exchanger tubes
  • Long life heat exchanger
  • 30+ year projected unit life
4. Low Installation Cost
  • Fewer units per area – One unit can condition up to 200,000 ft2
  • Installation requires small lifting equipment at floor level
  • No duct work required
  • Only 1 gas piping run per unit
  • Single point electrical connection
  • No bracing required for equipment
  • Units are “portable” – If you move, the unit can be used in your new facility
  • 3 men, _ day installation
  • No roof penetrations
  • No structural roof supports
5. Engineering Support and Customer Service
  • Our application engineers will design the optimum system for your building
  • Advise on best way to condition the space
  • We determine the amount of heating, cooling and air volume required in the space
  • We determine the quantity of units and best unit locations
  • Start-up service technicians ensure perfect operation
  • 83 years of applications experience
  • Billions of square feet of experience with warehouses, distribution, sports and manufacturing facilities
6. Safety
  • UL?-listed and approved.
  • Manufactured and tested in a UL? Test Data Program.
  • Products of combustion are not discharged into the heated space.