About hvac system working principle
DX stands for Direct Enlargement. DX refers to air conditioners that use refrigerant as being the medium of heat transfer to chill the air. Samples of DX systems consist of break up air conditioners, multi-split air conditioners, and VRF/VRV systems.BDD means Backdraft Damper. BDD is employed to be certain air flows in one path. It prohibit air fro