IOM 1210-1 • MAGNITUDE
®
MODEL WMC CHILLERS
6
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Receiving and Handling
The unit should be inspected immediately after receipt for
possible damage. All McQuay International centrifugal water
chillers are shipped FOB factory and all claims for handling and
shipping damage are the responsibility of the consignee.
On units with factory-installed insulation, the insulation
is removed from the vessel lifting hole (also used for
transportation tie-downs) locations and is shipped loose. It
should be secured in place after the unit is finally placed.
Neoprene vibration isolation pads are shipped loose in the
power panel. If the unit is equipped with a shipping skid, leave
the skid in place until the unit is in its final position. This will aid
in handling the equipment.
CAUTION
Extreme care must be used when rigging the unit to prevent
damage to the control panels and refrigerant piping. See the
certified dimension drawings included in the job submittal for
the weights and center of gravity of the unit. If the drawings
are not available, consult the local McQuay International sales
office for assistance.
The unit can be lifted by fastening the rigging hooks to the
four corners of the unit where the rigging eyes are located. A
spreader bar must be used between the rigging lines to prevent
damage to the control panels, piping, and electrical panels.
The spreader-bar length should be equal to, or no more than
1-foot shorter than, the distance between the lifting holes
located at opposite ends of the chiller. The unit will require a
single spreader-bar of this length capable of supporting 1.5
times the shipping weight of the unit. Separately, all cables and
hooks by themselves must also be capable of supporting 1.5
times the shipping weight of the unit.
If a knockdown option was ordered on the unit, reference the
Knockdown Installation Manual for more information.
Nameplates
There are several identification nameplates on the chiller:
• The unit nameplate is located on the Unit Control Panel.
Both the Model No. and Serial No. are unique to the unit
and will identify it. These numbers should be used to
identify the unit for service, parts, or warranty questions.
This plate also has the unit refrigerant charge and
electrical ratings.
• Vessel nameplates are located on the evaporator and
condenser. They have a National Board Number (NB)
and a serial number, either of which identify the vessel
(but not the entire unit).
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).
Clearance
The unit must be placed in an area that allows for adequate
clearance around the unit. See
Figure 5
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.
Figure 5: Minimum Clearances Based on Standard Waterboxes
NOTE:
Hinged type waterboxes may require more clearance. Consult a McQuay International sales representative for details.
Minimum 10’ Clearance on one end for tube service
(Models WMC125S, 145S, 145D, 200S, 225D, 250D)
Minimum 13’ Clearance on one end for tube service
(Models WMC150D, 275D, 290D, 400D)
WMC TOP VIEW
Minimum 3’ Clearance
Minimum 3’ Clearance
Minimum 4’ Clearance
in front of control boxes and electrical panels
