www.DaikinApplied.com 15
IOM 1210-7 • MAGNITUDE
®
MODEL WMC CHILLERS
WARNING
Remove compressor, piping or vessel holding charge
through the Schrader valve in the block off plates before
attempting to loosen any fittings on them. Failure to do so
can cause severe bodily injury.
4. Install the suction and discharge piping. The piping is
shipped in a crate, as shown in
.
Assemble as shown in
. Tighten
bolts after the entire line has been installed and aligned.
Insulate the suction line with the insulation and glue
provided.
5. Install the liquid line and motor cooling lines. These lines
are shipped in a crate, as shown in
6. Install control panel and compressor power panels by
bolting to the horizontal support members.
7. If the unit has single-point power, connect the power
leads from the terminal box under the control panel to
each power panel line side connection.
8. If unit is equipped with an economizer, connect piping to
compressor interstage point and flanges located on the
evaporator and condenser.
9. Connect any loose wiring.
10. Pressure (leak) test, evacuate, and charge with field
supplied HFC-134a using standard refrigeration practice.
Location
WMC chillers are intended only for installation in an indoor or
weather protected area consistent with the NEMA 1 rating on
the chiller, controls, and electrical panels. Equipment room
temperature for operating and standby conditions is 40°F to
104°F (4.4°C to 40°C).
NOTE:
Excessive humidity in the mechanical room should be
avoided. Excessive humidity in the mechanical room
can potentially lead to premature component wear on/
near all cool surfaces which can condense water. If
possible the mechanical room should be conditioned
which can extend the useful lifetime for all mechanical
room equipment.
Clearance
The unit must be placed in an area that allows for adequate
clearance around the unit. See
for clearance
requirements around the sides of the chiller. Doors and
removable wall sections can be utilized to meet these
clearance requirements. There must be a minimum 3-feet
clearance above the top of the chiller. The U.S. National
Electric Code (NEC) or local codes can require more clearance
in and around electrical components and must be checked for
compliance.
Mounting
The unit must be mounted on a concrete or steel base. Make
sure that the floor or structural support is adequate to support
the full operating weight of the complete unit.
The neoprene vibration pads (shipped loose in the power
panel) should be placed under the corners of the unit (unless
the job specifications state otherwise). They must be installed
so that they are flush with the edges of the unit feet.
It is not necessary to bolt the unit to the mounting slab or
framework. Should this be required by local codes, 1-1/8 inch
(28.5 mm) mounting holes are provided in the unit supports at
the four corners.
When mounted, the base pad of the unit must be level to within
± 1/2 inch (12.7 mm) across the length and width of the unit.
Figure 14: Minimum Clearances Based on Standard Waterboxes
NOTE:
Hinged type waterboxes may require more clearance. Consult a Daikin Applied sales representative for details.
Minimum 10’ Clearance on one end for tube service
(Models 036D09, 043D09, 048D09, 060D09,
043S09, 048S09, 060S09)
Minimum 13’ Clearance on one end for tube service
(Models 036D12, 043D12, 048D12, 060D12)
WMC TOP VIEW
Minimum 3’ Clearance
Minimum 3’ Clearance
Minimum 4’ Clearance
in front of control boxes and electrical panels
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