Advantage APT-RC Series Central Chillers

No. APT-RC is refrigeration only - compressor, evaporator and a remote air-cooled condensing section - so every module needs a separate pump tank station to move fluid through your process loop. Carry that station as its own line item when you compare an APT-RC quote with a packaged Titan or OACS price, or the module will look cheaper than the finished system is. Its pump also has to push the module's evaporator flow: moving 90 tons (1,080,000 BTU/hr) at a 10°F rise takes about 216 GPM, from BTU/hr = 500 x GPM x deltaT.

Because its model number counts compressor horsepower, not tons: 4 x 25 HP = 100 HP, while the published, actual cooling capacity is 90 tons. Size and quote this unit off that figure. The same pattern applies to the CCC-150APT-RC (6 x 25 HP = 150 HP, 135 tons actual). Read the labels as tonnage and the error compounds: a plant that adds one of each expecting 250 tons gets 225, a 25-ton gap worth about 300,000 BTU/hr that tends to surface on the hottest production week of the year.

Yes - multiple modules can parallel onto the same station to reach a total larger than any single packaged chiller in the range. Send us the station's existing pump curve and reservoir volume along with the additional tonnage you need. What usually runs out first is the station rather than refrigeration: each module adds evaporator flow the pump must deliver on top of process demand, and a reservoir that suited one module can let compressors short-cycle once two or three are staging against it.

Where the heat goes. APT-RC modules are air-cooled, with a remote condensing section on its own line set; WPT modules are water-cooled, rejecting heat to condenser water instead, with no remote condenser or outdoor footprint. Both require a separate pump tank station. The building usually settles it: tower water already piped to the room favors WPT, while no tower favors APT-RC and spares the plant a water treatment program. Remember that air-cooled capacity falls as outdoor temperature climbs, whereas WPT capacity follows the condenser water temperature instead.

Through two connections, both piped rigidly to the station. Process Water In receives the warm return water the station sends back from the process; Process Water Out goes to the chilled side of the station's reservoir, and the station's pump supplies the process. Land the outlet on the warm side by mistake and the module mostly recools its own water while the process runs warm. On the incoming line, fit isolation valves and a large-capacity basket strainer or bag filter of 40 mesh (about 400 micron) or finer; wye strainers don't hold enough debris. Use piping rated to at least 100°F and 100 PSI, no smaller than the connections, insulated against condensation and capacity loss.

Everything between the module and its remote condenser; the receiver and oil separator are built into every Advantage APT-RC module, so they are not seperate field items. The piping is refrigerant-grade copper joined with high-temperature phos-copper, never soft solder or water pipe. The installer adds discharge line check valves after the oil separator, shut-off valves in the hot gas and liquid lines, inverted traps, and relief valves plus recovery ports at the condenser, and secures the lines near the coil on runs longer than 50 ft. A certified refrigeration technician then evacuates and charges the system under load, so book that contractor when the module is ordered.

Yes. Each module runs on the MZC III multizone instrument with one intelligent zone board per refrigeration circuit, and those boards can connect to a Titan's display board, so the added tonnage runs in paralell as part of the same system. One instrument handles up to six refrigeration circuits - count them before ordering, since three existing circuits plus one triple-circuit module already fill it. On dual and triple circuit modules each circuit runs independently, giving finer capacity staging and letting the others keep cooling while one is down. Modbus RTU or SPI is standard; Modbus TCP and a remote display are options.