Most building codes require a certain amount of fresh air to overcome the effects of CO2 during times when the space is occupied. Use of fresh air dampers on HVAC equipment is an inexpensive way to allow fresh air into the building. McDaniel Metals offers both a manual and motorized fresh air damper to fit Daikin light commercial packaged equipment. The manual fresh air damper is installed and fixed in place to allow a certain amount of fresh air to circulate at all times. The motorized fresh air damper includes a small two position actuator that opens the damper when the indoor blower is running and closes the damper when the blower turns off.

McDaniel Metals Air Damper, 24 VAC, 10 in L, 15 in W, 36-3/8 in H

• Provides up to 25% fresh air
• Locking selection knob provides constant opening
• Fully assembled and factory wired
• Fits all 7.5 - 12.5 ton package units in all fuels all dampers painted to match the unit

• Instruction/Installation Manual https://assets.unilogcorp.com/267/ITEM/DOC/McDaniel_Metals_D25FD90150_Manual.pdf
• Specification Sheet https://assets.unilogcorp.com/267/ITEM/DOC/McDaniel_Metals_25FD90150_Specification_Sheet.pdf