The google link takes forever....
Use this:
http://www.hy-electrical.com/BF/GT series manual.PDF
Okay, let's assume you know nothing about VFDs.
For all VFDs, have nothing but wire between it and the motor; Bad Things may occur, otherwise, if a switch is between VFD and motor.
Only One Motor Per VFD.
You bought it new, unused (trying to avoid Bad Things)?
For the moment, the pressure switch is not connected to anything.
The VFD has its own breaker/disconnect.
I can't find an explicit declaration (in the first pages) about single phase operation, tell me what page contains that declaration, as well as any single phasing "safety" that needs to be disabled.
You have only single phase power, right?
The motor is 3.75 kw or less? (Single phase de-rating is typical)
On page 71, function PB.00 needs to be set to 0, to disable input phase protection.
Terminals RST are three phase input; which two terminals for single phase? I don't know.
Function P0.03 (max frequency) set to at least 60, unless the motor tolerates 50hz operation.