Magic Aire

The changeover (aquastat) switch is factory wired to the DDC controller as shown on the unit wiring diagram.  During installation in the field, this switch must be clamped onto the pipe supplying water to the unit upstream of the valve.  See the unit ventilator IOM for more details.

The drain pan is sloped toward side with largest coil’s connections or the DX coil connections.  For example, a unit with a 2-row right hand water coil and a 4-row left hand water coil will have the drain pan sloped down to the left hand side. The uphill connection is sealed with a plug and the downhill field connection is covered with a plastic cap except when the drain pan is stainless steel, then both connections are sealed with a plug. The slope may be reversed in field.  See Installation Manual for details.