Johnson Controls CSV060B-240B Unit Mounting, EVAPORATOR / CONDENSER SEPARATION - All models

FORM 145.15-IOM7 (412)

UNIT MOUNTING

The 5 ~ 20 ton models are shipped as a fully assembled integral package. If required units may be field split to allow for passage through doors, elevators, hallways, etc.

Duct flanges for evaporator return are incorporated into the filter rack.

Units should be secured on a solid, level pad or sturdy stand. The use of an isolating rubber sheet is recommended to reduce vibration and noise transmission. Ensure that the entire base is continuously supported - do not support unit at corner points only! Unit may be pitched slightly to ensure efficient drainage of condensate.

EVAPORATOR / CONDENSER SEPARATION - (All models)

-Reclaim the entire refrigerant charge from each compressor circuit.

-Disconnect the evaporator motor high voltage wires. Pull all wiring into the evaporator compartment. Remove bushing/clamp from routing hole for evaporator motor wiring.

-Cut and remove sections of all liquid and suction refrigerant lines. Make two cuts in each line, approximately 6 inches above and below the evaporator floor/condenser roof.

Use a TUBING CUTTER ONLY - do not use a hacksaw to cut refrigerant tubing otherwise serious damage can occur to refrigeration system!

-Remove corner securing brackets from the outside corners of the cabinet, at the joint line between the evaporator and condenser sections.

-Remove the evaporator section.

ASSEMBLY OF SPLIT UNITS - (All models)

-Place the condenser section in the required location.

-Carefully position the evaporator section atop the condensing section. Align all sides, the evaporator motor wire routing hole, and the refrigerant line routing holes.

-Install the securing brackets at all four corners, on the evaporator/condenser separation joint. Note that one bracket, intended for use at the corner with the +drain fitting, has a short "leg".

-Use appropriate tubing couplings and splice previously cut refrigerant lines. Pressure test refrigerant circuits with dry nitrogen (500 psig).

-Evacuate each circuit to at least 350 microns. If gauge pressure rises above 500 microns in one minute, evacuation is incomplete or the system has a leak.

-Charge circuit(s) to the value indicated on the unit nameplate.

-Install bushing/clamp into evaporator wiring routing hole, and pull wires through into electrical control panel. Connect motor leads to load terminals on contactor/overload relay.

Ensure evaporator motor rotation is correct upon unit start-up. Switch any two wires at contactor if blower rotation is not correct.

WATER PIPING

All factory installed water piping terminates inside the unit. Multi-condenser units feature manifolded single water in and out connections.

Water connection fittings are threaded copper. Use caution when tightening steel pipe into copper fittings. Always use a backing wrench on the hex fittings inside the unit.

It is recommended that flexible connectors be provided on the water supply and return lines if noise and vibration transmission could be a problem.

Water piping should include shutoff / balancing valves so that the unit can be serviced without shutting down and draining the entire water supply circuit. Since units are piped in parallel piping circuits, the shutoff valves may be used to equalize the pressure drop to each branch for even condenser water distribution. A bibcock or a plugged tee fitting should be installed between the shut-off valves and the unit in both the inlet and outlet pipes. These connections are to provide for acid cleaning of the condenser, if this should become necessary.

JOHNSON CONTROLS 5