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Tranquility 27 (TT) Series - Climatemaster

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Heating Cooling<br />

LWT = EWT -<br />

LAT = EAT +<br />

HE<br />

GPM x 500<br />

HC<br />

CFM x1.08<br />

CFM = airfl ow, cubic feet/minute<br />

EWT = entering water temperature, ˚F<br />

GPM = water fl ow in US gallons/minute<br />

EAT = entering air temperature, Fahrenheit (dry bulb/wet bulb)<br />

HC = air heating capacity, Mbtuh<br />

TC = total cooling capacity, Mbtuh<br />

SC = sensible cooling capacity, Mbtuh<br />

KW = total power unit input, KiloWatts<br />

HR = total heat of rejection, Mbtuh<br />

ClimateMaster Geothermal Heat Pump Systems<br />

HR<br />

LWT = EWT +<br />

GPM x 500<br />

SC<br />

LAT (DB) = EAT (DB) -<br />

CFM x1.08<br />

LC = TC - SC<br />

S/T = SC<br />

TC<br />

Residential Products Technical Guide<br />

Ref er ence Calculations & Legend<br />

Hot Water Generator capacities (HWC) are based on potable water fl ow rate of 0.4 gpm per nominal equipment ton and 90°F<br />

entering potable water temperature.<br />

UPFLOW<br />

Left Return Air<br />

Piping End<br />

Right Return Air<br />

HE = total heat of extraction, Mbtuh<br />

HWC = Hot Water Generator (desuperheater) capacity, Mbtuh<br />

WPD = Water coil pressure drop (psi & ft hd)<br />

EER = Energy Effi ciency Ratio = BTU output/Watt input<br />

COP = Coeffi cient of Performance = BTU output/BTU input<br />

LWT = leaving water temperature, °F<br />

LAT = leaving air temperature, °F<br />

LC = latent cooling capacity, Mbtuh<br />

S/T = sensible to total cooling ratio<br />

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<strong>TT</strong><br />

57

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