Carrier AQUAZONE 50PSH Installation And Service Instructions Manual

42Calculate the total volume of fluid in the piping system. SeeTable 32. Use the percentage by volume in Table 33 to deter-mine the amount of antifreeze to use. Antifreeze concentrationshould be checked from a well-mixed sample using a hydrom-eter to measure specific gravity.FREEZE PROTECTION SELECTION — The 30 F FP1factory setting (water) should be used to avoid freeze damageto the unit.Once antifreeze is selected, the JW3 jumper (FP1) shouldbe clipped on the control to select the low temperature (anti-freeze 13 F) set point to avoid nuisance faults.Table 32 — Approximate Fluid Volume (gal.)per 100 Ft of PipeLEGENDNOTE: Volume of heat exchanger is approximately 1.0 gallon.Table 33 — Antifreeze Percentages by VolumeCooling Tower/Boiler Systems — These systemstypically use a common loop temperature maintained at 60 to95 F. Carrier recommends using a closed circuit evaporativecooling tower with a secondary heat exchanger between thetower and the water loop. If an open type cooling tower is usedcontinuously, chemical treatment and filtering will be necessary.Ground Coupled, Closed Loop and PlateframeHeat Exchanger Well Systems — These systems al-low water temperatures from 30 to 110 F. The external loopfield is divided up into 2 in. polyethylene supply and returnlines. Each line has valves connected in such a way that uponsystem start-up, each line can be isolated for flushing usingonly the system pumps. Locate air separation in the piping sys-tem prior to the fluid re-entering the loop field.OPERATIONPower Up Mode — The unit will not operate until all theinputs, terminals and safety controls are checked for normaloperation.NOTE: The compressor will have a 5-minute anti-short cycleupon power up.Units with Aquazone™ Complete C ControlSTANDBY — Y and W terminals are not active in Standbymode, however the O and G terminals may be active, depend-ing on the application. The compressor will be off.COOLING — Y and O terminals are active in Cooling mode.After power up, the first call to the compressor will initiate a5 to 80 second random start delay and a 5-minute anti-shortcycle protection time delay. After both delays are complete, thecompressor is energized.NOTE: On all subsequent compressor calls the random startdelay is omitted.HEATING STAGE 1 — Terminal Y is active in heatingstage 1. After power up, the first call to the compressor willinitiate a 5 to 80 second random start delay and a 5-minuteanti-short cycle protection time delay. After both delays arecomplete, the compressor is energized.NOTE: On all subsequent compressor calls the random startdelay is omitted.HEATING STAGE 2 — To enter Stage 2 mode, terminal W isactive (Y is already active). Also, the G terminal must beactive or the W terminal is disregarded. The compressor relaywill remain on and EH1 is immediately turned on. EH2 willturn on after 10 minutes of continual stage 2 demand.NOTE: EH2 will not turn on (or if on, will turn off) if FP1 tem-perature is greater than 45 F and FP2 is greater than 110 F.LOCKOUT MODE — The status LED will flash fast inLockout mode and the compressor relay will be turned offimmediately. Lockout mode can be “soft” reset via the Y inputor can be “hard” reset via the disconnect. The last fault causingthe lockout is stored in memory and can be viewed by enteringtest mode.LOCKOUT WITH EMERGENCY HEAT — While in Lock-out mode, if W becomes active, then Emergency Heat modewill occur.EMERGENCY HEAT — In Emergency Heat mode, terminalW is active while terminal Y is not. Terminal G must be activeor the W terminal is disregarded. EH1 is immediately turnedon. EH2 will turn on after 5 minutes of continual emergencyheat demand.Units with Aquazone Deluxe D ControlEXTENDED COMPRESSOR OPERATION MONITOR —If the compressor has been on for 4 continuous hours the con-trol will automatically turn off the compressor relay and waitthe short cycle time protection time. All appropriate safeties,including the low-pressure switch, will be monitored. If alloperations are normal and the compressor demand is stillpresent, the control will turn the compressor back on.STANDBY/FAN ONLY — The compressor will be off. TheFan Enable, Fan Speed, and reversing valve (RV) relays will beon if inputs are present. If there is a Fan 1 demand, the FanEnable will immediately turn on. If there is a Fan 2 demand,the Fan Enable and Fan Speed will immediately turn on.NOTE: DIP switch 5 on S1 does not have an effect upon Fan 1and Fan 2 outputs.HEATING STAGE 1 — In Heating Stage 1 mode, the FanEnable and Compressor relays are turned on immediately.Once the demand is removed, the relays are turned off and thecontrol reverts to Standby mode. If there is a master/slave ordual compressor application, all compressor relays and relatedfunctions will operate per their associated DIP switch 2 settingon S1.HEATING STAGE 2 — In Heating Stage 2 mode, the FanEnable and Compressor relays are remain on. The Fan Speedrelay is turned on immediately and turned off immediatelyonce the demand is removed. The control reverts to HeatingStage 1 mode. If there is a master/slave or dual compressorIMPORTANT: All alcohols should be pre-mixed andpumped from a reservoir outside of the building orintroduced under water level to prevent fuming.PIPE DIAMETER (in.) VOLUME (gal.)Copper 1 4.11.25 6.41.5 9.2Rubber Hose 1 3.9Polyethylene 3 /4 IPS SDR11 2.81 IPS SDR11 4.511 / 4 IPS SDR11 8.01 /2 IPS SDR11 10.92 IPS SDR11 18.011 / 4 IPS SCH40 8.311 / 2 IPS SCH40 10.92 IPS SCH40 17.0IPS — Internal Pipe SizeSCH — ScheduleSDR — Standard Dimensional RatioANTIFREEZEMINIMUM TEMPERATURE FORFREEZE PROTECTION (F)10 15 20 25Methanol (%) 25 21 16 10100% USP Food GradePropylene Glycol (%) 38 30 22 15Ethanol (%) 29 25 20 14