Carrier 07D - Manual (Page 15)

INSTALLATION
06D,07D
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VENTILATION OF MACHINE SPACE
Ventilation must be provided to remove heat
from the compressor and allow refrigerant gas
to escape in case of a leak.
VIBRATION ISOLATION
Install the unit where the floor is strong enough
to support it. It is not necessary to install it on
a special foundation because vibration is ab­
sorbed by the compressor mounting springs.
On critical installations it may be desirable to
enclose the unit in an equipment room to pre­
vent direct transmission of sound to occupied
spaces. Place the unit where it will not be dam­
aged by traffic or flooding. It may be necessary
to cage the unit.
NOTE: Remove the compressor hold­
down bolts to allow the compressor to
float freely on the springs.
INSPECT SHIPMENT FOR LOSS AND DAMAGE
Check the shipping list immediately to see if
the shipment is complete. Inspect the unit for
damage. File a claim with the shipping company
immediately if damaged or lost.
Do not remove the tags until they are read and
understood. Save tags, instructions, installation
record card and shipping receipt. The person
starting machine may need them for reference.
SET THE UNIT IN PLACE
Set the unit in place. Level the condenser and
bolt the unit to the floor. For dimensions be­
tween hold-down bolt holes, see Fig. 6 - 13.
CODE COMPLIANCE
Install these units in accordance with applicable
codes and ordinances. Refer to ASA-B9 1-1953,
American Standards Association's "Mechanical
Refrigeration Safety Code."
Frangible discs are provided to protect against
explosion in cases of extreme heat from an
external source.
ELECTRICAL REQUIREMENTS
Before installing the unit, check the electric
service to insure that it is adequate. The volt­
age at the motor terminals must not vary more
than plus or minus 10% of the nameplate volt­
age during start-up or while running.
Phase unbalance for three-phase units must not
exceed 2%. Where unbalance exists, connect the
two lines with the higher amperages thru the
switch heater elements.
Table 3 lists the minimum wire sizes for 6D
Water-Cooled Condensing Units.
Figure 14 - 16 are the unit wiring diagrams for
the water-cooled condensing units.
Water-Cooled Condensing Unit Control
T ransformers
Control transformers are not furnished with
the 440 condensing units. Recommended trans­
former sizes are shown in Fig. 16. All 460/3/60
units have 115-volt control circuits. All other
units have 230-volt control circuits.
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