Carrier COMFORT 50EZ-A - Page 17

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LEGEND BF — Bypass Factor e d b — E n t e r i n g D r y --- B u l b Ewb — Entering Wet--- Bulb kW — Total Unit Power Input SHC — S e nsible Heat Capacity (1000 Btuh) TC — Total Capacity (1000 Btuh) (net) rh —Relative Humidity COOLING NOTES: 1. Ratings are net; they account for the effects of the evaporator--- fan motor power and heat. 2. Direct interpolation is permissible. Do not extrapolate. 3. The following formulas may be u sed:
Sensible capacity
(Btuh)
1.10 x cfm
t
ldb =
t
edb
---
Wet---bulb temperature corresponding to enthalpy air leaving evaporator coil (
h
lwb)
t
lwb =
total capacity (Btuh)
4.5 x cfm
h
lwb =
h
e w b ---
Where:
h
ewb = Enthal py of air entering evaporator coil
4. The SHC is based on 80_F (26.7 _C) edb temperature of air entering evaporator coil. Below 80_F (26.7_C) edb, subtract (corr factor x cfm) from SHC. Above 80_F (26.7_C) edb, add (corr factor x cfm) to SHC.
Correction Factor = 1.10 x (1 + BF) x (edb + 80). 5. Integrated capacity is maximum (instantaneous) capacity less the effect of frost on the outdoor coil and the heat required to defrost it. 4. The SHC is based on 80_F (26.7 _C) edb temperature of air entering evaporator coil. Below 80_F (26.7_C) edb, subtract (corr factor x cfm) from SHC. Above 80_F (26.7_C) edb, add (corr factor x cfm) to SHC.
Correction Factor = 1.10 x (1 + BF) x (edb + 80). 5. Integrated capacity is maximum (instantaneous) capacity less the effect of frost on the outdoor coil and the heat required to defrost it.
50EZ--A