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STEP 5 -- UNIT START-UP

IMPORTANT

If unit is equipped with a crankcase heater, it should be

energized 24 hours before unit start-up to prevent

compressor damage as a result of slugging.

1 - Rotate fan to check for binding.

2 - Inspect all factory- and field-installed wiring for loose

connections.

FIGURE 13. Typical Unit Wiring Diagram

Page 13

3 - After evacuation is complete, open the liquid line and

suction line service valve stems to release the

refrigerant charge (contained in outdoor unit) into the

system.

4 - Replace the stem caps and tighten to the value listed

in table 2.

5 - Check voltage supply at the disconnect switch. The

voltage must be within the range listed on the unit's

nameplate. If not, do not start the equipment until you

have consulted with the power company and the

voltage condition has been corrected.