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1. Uncrate the unit and check the packing list.
2. Check all items for damage and possible freight claims. Freight damage claims are the responsibility of the purchaser
3. Place the Polar unit at the desired indoor location. Unit may be suspended from the ceiling or shelf mounted using the optional wall mount kit. Do not sit unit on the floor.
4. Condensing unit should be located outdoors within 25 feet of the Polar unit. Additional tubing may be added to enclose the line set if necessary. Consult line sizing chart in the condensing unit book or call the factory.
5. Locate the condensing unit as per the condensing unit instructions.
6. When mounting and locating all equipment, conform to local codes.

1. Polar unit is to be mounted inside with a 208/240 volt, 1 phase, 20 amp service, brought to the system switch box located on the control end of the Polar unit.
2. Condensing unit is to be located outdoors with proper service connected. Consult condensing unit information plate for proper voltage and ampacity.
3. Polar unit has 24 volt control circuit transformer. Connect Red and WHITE low voltage wires from CCS unit to proper voltage terminals at the condensing unit.
4. System switch on Polar unit will disconnect power to the Polar unit and also disconnect the 24 volt control circuit to the condensing unit.
5. Locate the disconnects wherever needed. Conform to all local applicable codes.

1. The installer should unroll the pre-charged line set. Either end of the line set maybe connected to the Polar unit.
   • To connect the quick-connect fittings, simply screw them together. Use a backup wrench on the male fittings. When tightening the fittings, some refrigerant may escape, continue tightening until the fittings seal. Then check for leaks.

   CAUTION: If the precharged line set becomes crimped, the damaged spot MUST be cut out and an appropriate coupling installed.

2. After connecting the line set, open the condensing unit service valves which are located behind the condensing unit service panel.
3. The condensing unit, line set, and Polar unit are evacuated and pre-charged with R-22 freon at the factory.
4. After startup, check the refrigerant sight glass located in the Polar unit. If needed, charge the unit with R-22 until the sight glass is clear under full load conditions.
5. If additional tubing is required, use the Polar unit tube extension kit to add additional length without cutting the line set. Contact the factory for the extension kit and additional line set.

1. Route the suction line and the liquid line between the indoor unit and the outdoor unit
2. Remove the protective caps and plugs
3. If necessary, carefully wipe the coupling seats and threaded surfaces with a clean cloth to prevent the inclusion of dirt or any foreign material in the system.
4. Lubricate the male half diaphragm and synthetic rubber seal with refrigerant oil. Thread the coupling halves together by hand to insure proper mating of the threads. Use the proper size of wrenches (on the coupling body and union nut) and tighten until the coupling bodies "bottom" or a definite resistance is felt.
5. Using a marker or felt pen, mark a line lengthwise from the coupling union nut to the bulkhead. Then tighten an additional 1/4 turn. The misalignment of the line will show the amount the coupling has been tightened. This final turn is necessary to insure the formation of a leak-proof joint. If a torque wrench is used, the following torque values are recommended:

1. CAUTION: All chilled water piping MUST be done in 1 1/2" diameter pipe to insure proper water flow.
2. Connect the chilled water pipe lines according to the labels marked on the Polar unit.
3. Locate the isolation valves and unions to conform to good working practice and all local codes.
4. Polar unit should be located as close to the process equipment as possible.
5. A bypass line and valve assembly MUST be required at the end of the header system for proper water balance. Consult the factory if necessary. See drawing under the heading BASIC HEADER PIPING DETAIL.

1. Connect city water to 1/2" copper supply water line on Polar unit.
2. CCS unit has an automatic water regulating valve. When the system piping is complete, just open the supply water valve and the Polar unit will automatically fill the system to 40psi of water pressure.
3. An automatic venting system will vent air from the piping as water enters. The vent is self-sealing when the system is full of water. The vent also sits in a check valve. If it becomes necessary to remove the vent, just unscrew it. The check valve will maintain the water pressure. See GENERAL EQUIPMENT LAYOUT for pipe design.

1. Various brands of machines have various numbers of heat exchangers. Regardless of the number of heat exchangers, always use the basic piping arrangement.
2. Reduce the water in supply connections from 1 1/2" to match the heat exchanger inlet connections at the heat exchanger.
3. All pipe in the chilled water header loop must be 1 1/2" diameter in both the supply and return lines.

1. Mount the brackets to the wall in a secure manner on 16" centers.
2. Align the holes in the brackets with the holes in the Polar unit under the channel. Bolt the Polar unit securely to the brackets.

   CAUTION: Grind off or cushion any sharp corners left exposed.

3. Conform to all local codes.