Carrier 17/19EX - Manual (Page 157)

Suction Temperature:
42 F (5.6 C) = 37 psig (255 kPa) saturated refrigerant pressure (HFC-134a)
Condensing Temperature:
98 F (36.7 C) = 120 psig (1827 kPa) saturated refrigerant pressure (HFC-134a)
Maximum Load
∆
T2:
54 – 44 = 10° F (12.2 – 6.7 = 5.5° C)
Maximum Load
∆
P2:
120 – 37 = 83 psid (827 – 255 = 572 kPad)
To avoid unnecessary surge prevention, add about 10 psid (70 kPad) to
∆
P2 from these
conditions:
∆
T2 = 10° F (5.5° C)
∆
P2 = 93 psid (642 kPad)