15
Pre-Start Check
• Check that the refrigerant pipe line and communication
wire with indoor and outdoor units have been connected
to the same refrigeration system.
• Outdoor units require 208/230-1-60 power. Verify that
the power and phase requirements are correct and both
legs are present.
• Check that the power source’s voltage is within 10% of
the rated voltage.
• Check and confirm that the power and control wire are
correctly connected.
• Check that the wired controllers are properly connected.
• Before powering on, confirm there is no short circuit for
each line.
• Check that all units have passed a nitrogen pressure test
for 24 hours.
• Provide the customer accurate “as-built” drawings and
documents, including actual piping lengths and
locations, unit addresses, settings, etc.
• Ensure additional refrigerant charge calculations are
correct and that the system is charged accordingly.
• Energize outdoor units for at least 24 hours before
system start-up to ensure proper oil temperature has been
achieved.
• Ensure all refrigerant valves on outdoor units are fully
open. If these valves are not fully open, equipment
damage may occur.
MAINTENANCE
The following are recommended guidelines. Jobsite conditions
may say that maintenance schedule be performed more often
than recommended here.
EVERY 3 MONTHS:
• Check coil condition. Clean the coil if necessary.
EVERY 6 MONTHS — Follow the 3-month maintenance
schedule. In addition:
• Check for and remove debris that may have settled
around the base of the outdoor unit.
• Check for proper condensate drainage (clear basepan).
• Eliminate any standing water inside the outdoor unit.
EVERY 12 MONTHS — Follow the 6-month maintenance
schedule. In addition:
• Be sure all electrical connections are secure.
• Check heating and cooling action to confirm proper
operation.
CAUTION
When servicing or repairing this unit, use only factory-
approved service replacement parts. Refer to the rating
plate on the unit for complete unit model number, serial
number, and company address. Any substitution of parts or
controls not approved by the factory will be at the owner’s
risk and may result in equipment damage.
CAUTION
To avoid equipment damage, do not attempt to reuse any
mechanical or electrical controllers that have been wet.
Replace defective controller.