Startup And Maintenance - Daikin Magnitude WME Series Installation, Operation And Maintenance Manual

Pre-Startup
Inspect the chiller to ensure no components became loose or
damaged during shipping or installation including leak test and
wiring check. Complete the pre-start checklist at the front of
this manual and return to Daikin Applied prior to startup date.
NOTICE:
Daikin Applied service personnel or factory authorized
service agency must perform initial startup in order to activate
warranty. They must return the "WME Centrifugal Equipment
Warranty Form" within 10 working days to Daikin Applied as
instructed on the form to obtain full warranty benefits.
Flow Switch Installation and Calibration
A thermal dispersion flow switch uses heat to determine
flow and therefore must be calibrated during system startup.
A thermal dispersion flow switch can be an acceptable
replacement for paddle type flow switches and differential
pressure switches, but care must be taken regarding wiring.
The thermal dispersion flow switch supplied by Daikin Applied,
shown in Figure 1, comes as a two part unit consisting of a flow
switch and an adapter labeled E40242 by the supplier.
Figure 65: Thermal Dispersion Flow Switch and Adapter
Mounting
Figure 66 highlights the position of the electrical connector and
indentation 'mark' on flow switch.
Figure 66: Flow Switch Details
IOM 1266-2 • MAGNITUDE
IMPORTANT: Flow switch
MUST be calibrated before
chiller operation. Failure to
properly calibrate the switch
may result in severe chiller
damage and/or void warranty.
MODEL WME CHILLERS
®
It is required that the flow switch be mounted such that the
electrical connection and indentation 'mark' are pointed in the
direction of flow as shown in
If the flow sensor is to be mounted away from the unit, the
sensor should be mounted on the wall of the outlet pipe of
evaporator and condenser, or in a run of straight pipe that
allows 5 to 10 pipe diameters prior to the sensor and 3 to 5
pipe diameters of straight pipe after the sensor. Flow switch
is placed in outlet pipe to reflect flow leaving the barrel. If
installation on the inlet pipe is necessary, contact Chiller
Technical Response at TechResponse@DaikinApplied.com to
review the jobsite details.
Figure 67: Mount in Direction of Flow
It is important that the flow switch be mounted so that the
probe is sufficiently inserted into the fluid stream.
illustrates the recommended orientation of the sensor. It may
not be mounted directly on top or directly on the bottom of a
horizontal pipe.
NOTE: DO NOT alter or relocate factory installed flow switch.
If issues exist, contact Chiller Technical Response at
TechResponse@DaikinApplied.com.
Figure 68: Remote Mounting Guidelines for Flow Switch
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Figure 68
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