D
–EIMAC01905-23_00EN - 22/53
EWFD-TZD
OAT
Outside ambient air temperature
ELWT
Evaporator leaving water temperature
Ref 1
Operation with ELWT < 4 °C requires Option 08 (brine) and glycol
Ref 2
Operation with ELWT > 18 °C requires Option 187 (high evaporator leaving water temperature)
Ref 3
Operation requires option 142 (High ambient temperature kit)
The charts shown in these pages constitute a guideline on operating limits in the range.
Refer to the CSS selection software
for the actual operating limits in the working conditions for each model.
Fig. 16
– EWFD-TZD Blue and Silver unit envelope
Fig. 17
– EWFD-TZD Gold and Platinum unit envelope
3.3
Corrective factors
In case of units working at altitudes higher than 0 metre above sea level, following corrective factors shall be applied of
cooling capacity and absorbed power input: