THE FACT ABOUT AHU'S THAT NO ONE IS SUGGESTING

This is usually an electrical heater. When the outside air receives to all over six*c (42.8F) the heater will occur on and warmth the air up to shield the parts within from frost. In any other case This may freeze the heating and cooling coils inside of and burst them.Platelet depend and serum LDH concentration are probably the most delicate marker