Operating Pressures; Chiller Mode; Boiler Mode - Bosch TW Series Installation And Maintenance Manual

16 TW Series / Water to Water

CHIller Mode

Table 1 - r410a units - full load
Cooling Mode operating pressures (pSIG)
Entering Fluid
Temp °F
65
55
45

boIler Mode

Table 2 - r410a units - full load
Heating Mode operating pressures (pSIG)
Entering Load
Deg °F
70
90
110
v
N OTE: Ratings are based on water flow rates stated in specification sheets. 2.4 GPM/ton on evaporator
side and 10°F ∆ T on condensor side when in the chiller mode. Boiler mode conditions are 2.4 GPM/ton on
the source side and 10°F ∆ T on load side. The values are typical and may vary between models.
6 720 220 047
Entering Source Condenser Temperature °F
75 °F
Suction Discharge
Pressure Pressure
99-116 290-320
91-107 265-311
76-91 265-311
Entering Source Suction Pressure
40
60 99-116
80 130-145
40
60 99-116
80 130-165
40
60 99-116
80 139-165
Subject to change without prior notice
85 °F
Discharge
Suction Pressure
Pressure
107-123 325-358
91-107 303-350
76-91 295-345
Discharge Pressure
68-83 255-290
270-305
290-325
76-91 350-380
358-390
370-400
76-91 455-480
470-500
480-575

operating pressures

95 °F
Discharge
Suction Pressure
Pressure
107-123 370-400
99-116 370-400
83-99 358-390
Revised 03-11