Product Description, Applications
THP Heaters are portable, direct-fired, makeup air heating systems that economically and efficiently deliver dry, heated air to the construction and industrial markets. Models are available in a variety of fuel options, including natural gas, propane, electric, steam or hot water. THP Heaters range in size from 1,900 - 25,000 cfm (300,000 to 4.5 million Btu/hr). THP Portable Heaters are ideal for construction applications, including curing concrete pours, painting, drywall installation and interior finishing of any kind. THP Portable Heaters are also suitable for outdoor special event heating requirements. All models meet ANSI Z83.7, 1991 standards. ETL listed models are available.

Construction, Materials, Finishes
The unit enclosure is constructed of steel and houses a centrifugal blower, electronically modulated gas valve, high and low temperature switch, airflow switch, remote thermostat, and electronic flame supervision, on an 8" (203 mm) caster or skid-mounted base. Enclosure construction and steel gauge vary by size.

Features, Advantages

• Distributes high volumes of dry, heated air with special centrifugal blowers
• Provides 10:1 fan induction ratio, compared to 4:1 ratio commonly found on standard heaters
• Allows the air to hold more moisture, minimizing surface condensation
• Draws fresh, 100% outside air for a controlled ventilation rate
• Blends warm air continuously, reducing temperature stratification
• Maintains desired temperature with remote thermostat
• Regulates environment using control systems common to permanently installed equipment
• Pollutants from construction processes are not recycled into the air system
• Lowers moisture by constantly introducing fresh, outside air into work space