If, after configuring a v alue for these point s, surge prevention is operating too soon or t oo late
for conditions, these parameter s should be changed by the operator.
Example of configurat ion: Machine operati ng parameters
Refrigerant used: HFC-1 34a
Estimated Minimum Loa d Conditions:
44 F (6.7 C) LCW
45.5 F (7.5 C ) EWC
43 F (6.1 C) S uction Temper ature
70 F (21.1 C) Condensing Temp erature
Estimated Maximu m Load Condit ions:
44 F (6.7 C) LCW
54 F (12.2 C) ECW
42 F (5.6 C) S uction Temper ature
98 F (36.7 C) Condensing Temp erature
Calculate Maximum Load
To calculate maximum lo ad po ints, use design load c on dition data. If the mac hi ne full load
cooler temperature dif ference is more than 15° F (8.3° C), estimate the refrigerant suction and
condensing temperat ures at this difference . Use the proper saturate d pressure and temperat ure
for the particular ref r ige rant used.