QE
20
Trilogy
®
45 Q-Mode
®
(QE) Series
ClimateMaster: Declare your personal energy independence.
Ref er ence Calculations
&
Legend
CFM/T = air
fl
ow, cubic feet/minute per ton
EWT = entering water temperature,
˚
F
GPM = water
fl
ow in US gallons/minute
EAT
= entering air temperature, Fahrenheit (dry bulb/wet bulb)
HC
= heating capacity, Mbtuh
TC
= total cooling capacity, Mbtuh
SC
= sensible cooling capacity, Mbtuh
KW
= total power unit input, KiloWatts
HR
= total heat of rejection, Mbtuh
DT
= temperature
di
ff
erence
HZ = hertz
HE
= total heat of extraction, Mbtuh
WPD = Water coil pressure drop (ft hd)
EER = Energy
E
ffi
ciency Ratio = BTU output/Watt input
COP = Coe
ffi
cient of Performance = BTU output/BTU input
LWT
= leaving water temperature, °F
LAT
= leaving air temperature, °F
LC
= latent cooling capacity, Mbtuh
S/T
= sensible to total cooling ratio
EWTS = entering water temperature (source)
EWTL = entering water temperature (load)
DTS = temperature
di
ff
erence (source)
DTL = temperature
di
ff
erence (load)
LWTS = leaving water temperature (source)
LWTL = leaving water temperature (load)
HW
= hot water (potable)
HWC = hot water capacity, Mbtuh
LWT = EWT -
HE
GPM x 500
LAT = EAT +
HC
CFM x1.08
LWT = EWT +
HR
GPM x 500
LAT (DB) = EAT (DB) -
SC
CFM x1.08
LC = TC - SC
S/T =
SC
TC
Heating
Cooling
Piping End
Left Return Air
Right Return Air
UPFLOW
HORIZONTAL
Straight Discharge
Straight Discharge