Johnson Controls YORK SOLUTION LD09624, Инструкция по установке и запуску

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3-7
johNSoN coNtroLS
ForM 102.20-N1 (1109)
3
Energize Fan Motor(s)
1. Observe fan(s) for smooth operation.
2. Check motor nameplate Full Load Amp rating.
3. Immediately, check current draw of each leg of
each motor.
Variable Speed drive (VSd)
YORK Air-Modulator (Variable Frequency Drive)
yORK Air Modulators are provided
with Start-up service. See Installation
and Start-up Guide provided with the
yORK Air Modulator.
FIG. 3-7 – EXAMPLE OF SWEEP BALANCE RESULTS
Set up of a non-Factory Mounted VFd
Refer to manufacturers Start Up Guide.
The Variable Frequency Drive (VFD) that controls the
speed of a YORK Solution air handler fan needs to be
set up so the fan does not run at resonant frequencies.
Improper adjustment may damage the equipment. To
determine which speeds are detrimental to the YORK
equipment, refer to the document (058-008-002)
supplied with the YORK Solution air handler. This
information can also be found on the label located
on the blower housing (
see Fig. 3-7
). This document
lists any frequencies and the bandwidths that need
to be jumped (skipped) by the VFD. The installer
needs to program the jump (skip) frequencies and the
bandwidths referenced in document (058-008-002)
into the VFD. Failure to properly set the VFD before
applying power to the motor will void the fan and
motor warranty.
If the skip frequencies are not avail-
able to the installing contractor, the
contractor must have the fan analyzed
by a professional balancer before the
VFD can be set and power is supplied
to the fan.