Thermo King TriPac Envidia, Installation Manual

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A/C Hose Installation
Installation
IMPORTANT: Keep all the A/C fittings capped and sealed until the installation of the refrigeration hoses.
Refrigerant oil is extremely hygroscopic and a system left open for more than 5 minutes may require extensive
evacuation/dehydration time to remove moisture.
NOTE: The Evaporator/Control Box system has a Nitrogen holding charge of 5 PSI. This holding charge can safely
be vented into the atmosphere.
NOTE: Read and understand Fabricating Refrigeration Hoses section for proper hose fabrication requirements.
IMPORTANT: Always use two wrenches while tightening refrigeration fittings.
Condenser Coil to Evaporator/Control Box (Discharge Line)
1. Fabricate a #6 hose with a 90 degree fitting and connect to the fitting on the condenser coil inlet (top
connection). Tighten the fitting to 15-20 ft-lb (20-27 N•m). Use a backup wrench.
2. Route the hose up through the 2” access hole in the tractor floor near the Evaporator/Control Box air
conditioning fittings.
3. Cut the hose to length, install a 90 degree fitting with service port and attach it to the large fitting on the
Evaporator/Control Box. Tighten the fitting to 15 to 20 ft-lb (20 to 27 N•m). Use a backup wrench.
Receiver Drier to Evaporator/Control Box (Liquid Line)
4. Fabricate a #4 hose with a 90 degree fitting and attach onto the receiver liquid line outlet fitting on the
receiver drier. Tighten the fitting to 11 to 13 ft-lb (15 to 17 N•m). Use a backup wrench.
5. Route the hose up through the 2” access hole in the tractor floor near the Evaporator/Control Box air
conditioning fittings.
6. Cut the hose to length, install a 90 degree fitting and attach onto the small fitting on the Evaporator/Control
Box. Tighten the fitting to 11 to 13 ft-lb (15 to 17 N•m).
7.
Secure all hoses adequately with clamps or band wraps.
Special Tools Required
Hose Fitting Tool (204-1045)
Hose Cutting Tool (204-677)
Alkyl Benzene refrigerant oil (670404TKA).
Torque Wrench