specifications

PRODUCT SPECIFICATIONS Horizontal Evaporator Coils: ENH4X
484 51 3701 00 7
Specifications subject to change without notice.
NOTES:
1. Contact manufacturer for cooling capacities at conditions other than shown in table.
2. Formulas:
Leaving db = entering db −
sensible heat cap.
1.09 x CFM
Leaving wb = wb corresponding to enthalpy of air leaving coil (h
LWB
)
h
LWB
= h
EWB
−
total capacity (Btuh)
4.5 x CFM
Where h
EWB
= enthalpy of air entering coil
3. SHC is based on 80°F (27°C) db temperature of air entering the evaporator coil.
Below 80°F (27°C) db, subtract (Correction Factor x CFM) from SHC.
Above 80°F (27°C) db, add (Correction Factor x CFM) to SHC.
4. Direct interpolation is permissible. Do not extrapolate.
5. Fan motor heat has not been deducted.
6. All data points are based on 10°F (−12°C) superheat leaving coil and use of thermostatic expansion valve (TXV) device.
7. The ENH4X coils can be used in any properly designed system using R−410A refrigerant.
8. Before using maximum cfm shown in table, check coil static pressure drop to ensure system blower can provide necessary
static pressure needed for coil and duct systems.
9. Bypass Factor = 0 indicates no psychometric solution. Use bypass factor of next lower EWB for approximation.
BYPASS FACTOR
ENTERING AIR DRY BULB TEMPERATURE _F (_C)
79 (26) 78 (26) 77 (25) 76 (24) 75 (24) Under 75 (24)
81 (27) 82 (28) 83 (28) 84 (29) 84 (29) Above 85 (29)
Correction Factor
0.10 0.98 1.96 2.94 3.92 4.91
Use formula shown below
0.20 0.87 1.74 2.62 3.49 4.36
0.30 0.76 1.53 2.29 3.05 3.82
Interpolation is permissible.
Correction Factor = 1.09 x (1 − BF) x (db − 80)