201162 | ALTITUDE KIT UDAP/S 200-300 | Reznor

**ALTITUDE KIT UDAP/S 200-300** This Altitude Kit from Reznor is designed for use with UDAP/S heaters with capacities ranging from 200,000 to 300,000 BTUH. It allows the heater to operate at altitudes up to 10,000 feet above sea level. The kit includes a modified gas valve, a nozzle, and an air shutter. The gas valve is designed to maintain a constant gas flow rate despite changes in altitude, ensuring proper combustion and efficient operation. The nozzle provides the correct fuel-air mixture for optimal combustion, and the air shutter regulates the amount of air entering the burner. By maintaining a precise fuel-air mixture and gas flow rate, the altitude kit ensures reliable and efficient operation of the heater at high altitudes.