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NOTE: If the union nut is too loose it will cause leaks. Over-tightening may
damage connections and cause leaks. Carefully tighten the union nut to the
correct torque level referring to the Torque Table below. If you need help on
this step, please contact customer support.
4. Connecting the Refrigerant Pipings
● Align both ends of the refrigerant pipings and start to twist on the union nut by
hand.
● Use a standard wrench on the pipe joint and an open-end torque wrench on the
union nut to apply the proper torque as shown in the torque table below.
pipe joint
pipe
union nut
open-end torque wrench
pipe
indoor pipe
standard
wrench
union nut
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