FloAire Modular Packaged Unit - Manual (Page 7)

7
Plumbing Connections
There is one field plumbing connection required for proper DX coil operation. This is the drain pan
located under the DX coil. Depending on the size of the unit, the coil can generate 5 gallons of water per
hour. It is imperative that the plumbing be sized accordingly. Also, it’s recommended that all plumbing
connections be sealed with Teflon tape or pipe dope.
Only 1” diameter PVC Pipe and low profile couplings should be used. Additionally, the top horizontal
length on the P-Trap should be a minimum of 12”. No unions should be used. Add a clean out as shown
in the picture below.
The P-Trap drain should be attached to the end of the drain pipe on the side of the unit. The trap is
important for two reasons. First, it can be piped to drain in the most convenient area. Second, it keeps
air from being drawn through the drain hole in the side of the pan, impeding drainage.
Typical Cooling Coil Drain Trap
Gas
Refer to the Make-up air (MUA) manual that shipped with this unit for gas installation details.
Electrical
Before connecting power to this unit, read and understand the
entire section of this document. As-built wiring diagrams are
furnished with each fan by the factory and are attached to the
door of the unit.
Electrical wiring and connections should be done in accordance
with local ordinances and the National Electric Code,
ANSI/NFPA70. Be sure the voltage and phase of the power
supply and the wire amperage capacity is in accordance with the
motor nameplate. For additional safety information refer to AMCA publication 410-96, Recommended
Safety Practices for Users and Installers of Industrial and Commercial Fans.
WARNING!!
Disconnect power before
installing or servicing fan. High
voltage
electrical input is
needed for this equipment. This
work should be performed by a
qualified electrician.