Connection Of Pipes; Electrical Connection; Final Check - Johnson Controls SABROE ChillPAC Installation Manual

Connection of pipes

The piping design must include considerations regarding function, suspension, vibrations, thermal
expansion, and pre-stress after welding to avoid high load on the unit connections.
The safety valves are fitted on the unit from factory. The pipe connection to the valve discharge
branch must be made in accordance with valid rules and standards.
Leak and pressure test
All units are pressure and performance tested from the factory. Perform any additional leak and
pressure tests in accordance with the applied local codes and rules.
Isolate the compressor unit from the test pressure or disconnect pressure transducers and safety
valves. Never exceed the test pressure of the unit stated on the unit name plate.

Electrical connection

Connect the power supply wiring according to the electrical diagrams.

Final check

Check all relevant components, connections, electrical connections, safety valves, safety high-
pressure cut-out, and the machine room safety.
Evacuation
Evacuate the system using a vacuum pump for 5 mm Hg and perform a vacuum test.
Note: The unit is pressurized with approximately 0.5 bar (g) nitrogen from the factory. The nitrogen is
often mixed with a minor amount of R717 vapor left from the factory test (absorbed in oil). This
should be considered when positioning the discharge from the vacuum pump.
Charge oil
Charge the oil, if it is not charged from the factory. The oil level should be visible in the middle of the sight glass.
Note
ChillPAC and ChillPAC LP can be charged with either S68 or PAO oils.
HeatPAC and DualPAC unit may only be charged with PAO oils.
Installation guide - ChillPAC and HeatPAC
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Installation guide