Carrier AquaEdge 19DV Series Start-up, Operation And Maintenance Instructions Manual

Also see for AquaEdge 19DV series: Start-up, operation and maintenance instructions Installation, operation and maintenance instructions Installation instructions Controls operation and troubleshooting Operation and Troubleshooting

Carrier AquaEdge 19DV Series Start-up, Operation And Maintenance Instructions Manual Manual pdf 23 page image

23NOTE: Conductors and drain wire must be 20 AWG (Ameri-can Wire Gage) minimum stranded, tinned copper. Individualconductors must be insulated with PVC, PVC/nylon, vinyl,Teflon1 , or polyethylene. An aluminum/polyester 100% foilshield and an outer jacket of PVC, PVC/nylon, chrome vinyl,or Teflon with a minimum operating temperature range of –4°Fto 140°F (–20°C to 60°C) is required. See Table 6 for cablesthat meet the requirements.Table 6 — Manufacturers and Cable NumbersWhen connecting the CCN communication bus to a system ele-ment, a color code system for the entire network is recom-mended to simplify installation and checkout. The color codeshown in Table 7 is recommended.Table 7 — Recommended Color CodeInhibitor ChargeThe inhibitor charge is included with the 19DV unit suppliedfrom the factory. No action associated with inhibitor is requiredunless a new refrigerant charge is added or the inhibitor hasbeen distilled out of the existing refrigerant charge.If the unit needs to be disassembled, add 1% (mass of total re-frigerant charge) of inhibitor PP23BZ110001 (part number is for1 Gal. Inhibitor Density is 8.2202 lb/Gal [0.985 Kg/L]). For ex-ample, see Tables 8 and 9; sum up the evaporator, condenser,and economizer charge; take 1% of total charge; then calculaterequired inhibitor volume. For a G20 evaporator with G22 con-denser this yields: (700+413+342)lb*0.01/(8.2202 lb/Gal)=1.77Gal (1 Gal + 99 oz) [6.70 L]. See Fig. 19 for field inhibitor addi-tion assuming compressor running and negative evaporator pres-sure. A dose of Carrier inhibitor is supplied with the unit by thefactory.Suggested Procedure:1. Ensure availability of appropriate PPE such as protectivegloves/protective clothing/eye protection/face protectionand wash throughly after handling.2. If new inhibitor charge is required, a refrigerant charge hosecan be used for this purpose or a hard pipe creating a funnelusing a 90 degree 2-in. x 1/2-in. NPT female elbow reduceralong with a 2-in. NPT pipe to create a reservoir (add inhib-itor as it is being sucked into the evaporator and close 1/2-in.charging ball valve prior to air being sucked into chiller).Ensure that parts used to add inhibitor are clean to avoid anychiller contamination.Software ConfigurationSee the 19DV with PIC6 Controls Operation and Troubleshoot-ing manual for instructions on using the PIC6 interface to con-figure the 19DV unit. As the unit is configured, all configurationsettings should be written down. A log, such as the one shownstarting on page CL-1, provides a list for configuration values.Charge Unit with Refrigerant.1. Teflon is a registered trademark of DuPont.MANUFACTURER CABLE NO.ALPHA 2413 or 5643AMERICAN A22503BELDEN 8772COLUMBIA 02525SIGNALTYPECCN BUS CONDUCTORINSULATION COLORCCN TERMINALCONNECTION+ Red Red (+)GROUND White White (G)– Black Black (–)WARNINGBE AWARE that certain automatic start arrangements canengage the starter. Open the disconnect ahead of the starterin addition to shutting off the chiller or pump. Failure tofollow this procedure may result in personal injury by elec-tric shock.WARNINGThe main disconnect on the starter front panel may not de-energize all internal circuits. Open all internal and remotedisconnects before servicing the starter. Failure to follow thisprocedure may result in personal injury by electric shock.WARNINGDo not operate the chiller before the control configurationshave been checked and a Calibration and Control Test hasbeen satisfactorily completed. Protection by safety controlscannot be assumed until all control configurations havebeen confirmed.IMPORTANT: Turn on the chilled water and condenser waterpumps to prevent freezing.CAUTIONAlways operate the condenser and chilled water pumpswhenever charging, transferring, or removing refrigerantfrom the chiller. Always confirm that water flow is estab-lished. Failure to follow this procedure may result in equip-ment damage.CAUTIONThe transfer, addition, or removal of refrigerant in springisolated chillers may place severe stress on external pipingif springs have not been blocked in both up and down direc-tions. Failure to block springs in both up and down direc-tions could result in severe personal injury and equipmentdamage.CAUTIONAlways operate the condenser and chilled water pumpsduring charging operations to prevent freeze-ups. Damagecould result to equipment if condenser and chilled waterpumps are not operated during pumpdown or charging.WARNINGAlways charge refrigerant gas into unit until pressure exceedswater freeze temperature using PUMPDOWN/LOCKOUT(located in the Maintenance menu) and TERMINATE LOCK-OUT mode on the PIC6. Evaporator and condenser waterpumps must be running to prevent tube freezing.For R-1233zd(E) water freeze point is exceeded at -15 in. Hg(-51 kPa).