100% Direct-Fired Make-up Air Heating System

100-outside-makeup-hvacArizon’s 100% Outside Air Indirect or Direct-Fired Makeup Air Heating and Cooling Systems are a perfect solution to negative building pressure problems as well as manufacturing and industrial buildings in need of large amounts of make-up air with high process, high exhaust issues such as paint booths, welding facilities and other corrosive environments.

  •  High volume makeup air system
  •  Heating capacities up to 18,200,000 BTU’s
  •  Air volumes up to 130,000 CFM
  •  Cooling capacities up to 450 tons
Unit Information and Options

• 30:1 burner turndown on direct-fired equipment
• Up to 18:1 burner turndown on indirect-fired equipment
• Horizontal roof or thru wall-mount, outdoor vertical-mount,
indoor suspended, horizontal mezzanine
• Hot water, steam, oil, gas, LP or electric heating sources.
• Remote burner flame safeguard controls with flame
reset switches
• 304 or 409 stainless steel heat exchangers
• Variety of discharge configurations
• U.V. flame detection, automatic gas modulation,
low fire start, low airflow switch
• Cast aluminum burners with stainless steel mixing plates
• DX, chilled water, ammonia, and evaporative cooling available
• Fan bearings rated to a minimum of 100,000 hours (L-10 Life)
• NEMA 5 remote control panel, NEMA 3R Main Electrical Panel
• 1 year parts warranty and fully factory tested

Construction Preferences

• Single or double wall construction
• G90 galvanized or painted finish
• Spring or neoprene isolators

Control Options

• Discharge temperature
• Space temperature
• Building pressure
• DDC/BAS (LONworks, BACnet, ModBus and
web-based systems capable)
• Non-fused motor disconnect switch, control circuit fusing