Carrier GT-G User Manual

Also see for GT-PX: Technical guide

Contents

Indoor & Outdoor SplitGeothermal Comfort SystemsCarrier Indoor & Outdoor Split Geothermal Heat Pumps - Rev.: 08/10/05 17CFM = airflow, cubic feet/minuteEWT = entering water temperature, ˚FGPM = water flow in US gallons/minuteEAT = entering air temperature, Fahrenheit(dry bulb/wet bulb)HC = air heating capacity, MbtuhTC = total cooling capacity, MbtuhSC = sensible cooling capacity, MbtuhKW = total power unit input, KiloWattsHR = total heat of rejection, MbtuhHE = total heat of extraction, MbtuhHWC = Hot Water Generator (desuperheater)capacity, MbtuhWPD = Water coil pressure drop (psi & ft hd)EER = Energy Efficiency Ratio= BTU output/Watt inputCOP = Coefficient of Performance= BTU output/BTU inputLWT = leaving water temperature, °FLAT = leaving air temperature, °FLC = latent cooling capacity, MbtuhS/T = sensible to total cooling ratioLWT = EWT - HEGPM x 500LAT = EAT + HCCFM x1.08LWT = EWT + HRGPM x 500LAT (DB) = EAT (DB) - SCCFM x1.08LC = TC - SCS/T = SCTCHeating CoolingHeating Corrections Cooling CorrectionsSens Clg Cap Multiplier - Entering DB °FEnt Air DB°F Htg Cap Power Heat ofExt Ent AirWB °F Total ClgCap 70 75 80 80.6 85 90 95 Power Heat ofRej60 1.019 0.896 1.054 60 0.881 0.943 1.067 1.192 1.240 * * * 0.983 0.89965 1.010 0.948 1.028 65 0.940 0.797 0.952 1.106 1.125 1.261 * * 0.991 0.94968 1.004 0.980 1.011 66.2 0.976 0.693 0.868 1.043 1.063 1.217 * * 0.997 0.98070 1.000 1.000 1.000 67 1.000 0.624 0.812 1.000 1.023 1.188 1.343 1.352 1.000 1.00075 0.997 1.059 0.979 70 1.012 0.697 0.820 0.835 0.944 1.067 1.257 1.002 1.01080 0.993 1.118 0.957 75 1.024 0.637 0.658 0.817 0.983 1.159 1.005 1.019Rev. 5/2/00M* Sensible capacity equals total capacity (no latent capacity) at conditions shown as " * "ARI/ISO/ASHRAE 13256-1 uses entering air conditions of Clg- 80.6°F DB/66.2°F WB and Htg- 68°F DB/59°F WBGT-GS & GT-S Performance Correction Factors