Make-Up Air Systems—
Total SOLUTION™



Industrial Space Heaters
(The Dragon™)



Make-Up Air Heating
& Air Conditioning
(The Firefox™)



80/20 Pressurization
& Recirculation
(The 80/20 PR™)



Indirect-Fired Make-Up Air (Pure Air™)



Industry-Specific Applications

 The PR™—Air Pressurization/Re-Circulation System

This positive-pressure heating and/or cooling system eliminates cold spots due to infiltration. Make-up air volume increases as doors open, maintaining positive pressure in the building.



Performance Data
Guide Specification

Features & Benefits
The PR™—80/20% Positive Pressurization & Recirculation Unit

Standard Features:
  • Heating capacity up to 16,800,000 BTUH
  • Air Volumes up to 120,000 CFM
  • Heavy gauge unit exterior with light weight aluminum frame construction
  • Weather resistant units with 2-coats of paint prime and finish
  • NEMA 5 Remote control panel
  • NEMA 3R Main electrical panel
  • Multiple unit configurations: Horizontal or Vertical as well as indoor and outdoor
  • Variety of discharge configurations
  • 30:1 burner turndown capability; Hi and Low temperature limit switches
  • Remote burner flame safeguard controls with flame reset switch
  • U.V. flame detection, automatic gas modulation, low fire start, low airflow switch
  • Non-fused disconnect, motor starter and overload protection, control circuit fusing
  • Fan bearings rated at a minimum of L-10 100,000 Hours
  • Factory piped, wired, and tested
  • 2 year parts warranty
  • Aluminum burner
Optional Features:
  • 80/20 Modulating - Fixed - or Two position return air models
  • Double wall cabinet construction & insulated unit
  • Inlet plenum or hoods on horizontal models
  • Cabinet plenums or legs for vertical units
  • Motorized inlet or discharge dampers on FM or IRI Models
  • Internal Vibration isolation
  • Motor and belt guards
  • Fused disconnect switch
  • Maxitrol Series 14 discharge temperature controls with remote temperature dial (available in most models)
  • Maxitrol Series 44 space temperature controls with remote thermostat
  • DFM space temperature controls with digital display and built-in time clock
  • Two, Three, or Four way discharge diffusers with single or double deflections
  • Variety of filtering choices
  • Flat, pitched, or full duct plenum curbs
  • DX, Chilled water or evaporative cooling
  • Heat sources using gas or propane
Benefits:
  • Low first cost solution
  • Low installation cost heating or cooling
  • Highest quality 80/20 make-up air heating & cooling system
  • Lower break motor horsepower vs. competition -significant fuel savings to end user
  • Excellent building pressurization control HVAC product which prevents unwanted infiltration of unconditioned air
  • Long equipment life - low cost to maintain
  • 99.9% Efficient burner, lower gas operating cost
  • Great product use for summer-time ventilation purposes
  • Large variety or vertical & horizontal unit arrangements to choose from
  • ETL Certified product that meets ANSI Z83.4A-2001 Standard
  • Indoor and Outdoor Applications