17 Series Mini-Split
minute after achieving 350 micron pressure vacuum.
6. After evacuation is complete, additional charge can be added.
a. If no additional charge is required, break the vacuum with refrigerant, then remove the
gauge connectors.
b. Slightly open the liquid valve at the OD unit, allow system to equalize, then fully open the
liquid valve and then open the vapor service valve.
7. After leak checking is complete, apply thermal insulation around the fl are connections and
all exposed refrigeration pipes. Refer to the guidelines for insulating refrigerant piping and
connections in this manual for additional information.
a. Seal the insulation.
b. Inspect the insulation to assure no breakages are present.
Back-up Wrench
Pipe Diameter in. (mm) Tightening Torque
1/4 (6.35) 11.25-14.75 ft-lbf / 15 ~ 20 N•m
3/8 (9.52) 22.25-29.50 ft-lbf / 30 ~ 40 N•m
1/2 (12.7) 33.25-40.50 ft-lbf / 45 ~ 55 N•m
5/8 (15.9) 44.25-47.75 ft-lbf / 60 ~ 65 N•m
Pipe Insulation
Installing the Condensate Pipe
NOTICE
Do not sharply twist or curve the condensate drain pipe. Ensure pipe ends are not submerged in
water. Drain pipe must provide adequate fl ow and slope downward to the outlet. Failure to do so
may result in leakage and overfl ow of the drain pan.
1. Connect the drain hose to the outlet pipe of the indoor unit (shown in Fig. A below).
2. Bind the joint with tape (shown in Fig. B below).
3. Wrap the pipe with insulating tape to prevent condensation (shown in Fig. C below).
Note: The drain pipe must be routed lower and sloped downward away from the indoor unit.
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