Störk-Tronic ST710-PWHVM.26, Manual, Page: 20 / 25

For refrigerant R407C (A37 = 2)
Setpoints 1 and 1’
S1 = 3.6 bar (or -0.1°C)
S2 absolute = 3.6 bar
S2 relative = 0.0 bar
A59 = 0.0 K
Setpoints 2 to 6
P1 absolute = 5.4 bar (or 9.8°C)
P1 relative = 1.8 bar
P2 absolute = 7.8 bar
(or 20.0°C)
P2 relative = 4.2 bar
P3 absolute = 10.7 bar
(or 29.9°C)
P3 relative = 7.1 bar
P4 absolute = 14.4 bar
(or 40.0°C)
P4 relative = 10.8 bar
P5 absolute = 18.9 bar
(or 50.2°C)
P5 relative = 15.3 bar
Hysteresis
P11 – P16 = 0.2 bar (or 1.2 K)
Control range limitations
P17 = 0.0 bar (or -37.1°C at 4.0 mA)
P18 = 30.0 bar (or 69.4°C at 20.0 mA)
Actual value correction
P21 = 0.0 bar
Alarm limit values
P30 absolute = 0.0 bar
P30 relative = -1.4 bar
(3.6-1.4 bar or -10.2°C for -10.0 K)
P31 absolute = 30.0 bar
P31 relative = 1.9 bar
(3.6+1.9 bar or 10.3°C for +10.0 K)
Alarm hysteresis
P32 = 0.2 bar (or 1.2 K)
For refrigerant R404A (A37 = 3)
Setpoints 1 and 1’
S1 = 5.0 bar (or 0.0°C)
S2 absolute = 5.0 bar
S2 relative = 0.0 bar
A59 = 0.0 K
Setpoints 2 to 6
P1 absolute = 7.1 bar (or 9.7°C)
P1 relative = 2.1 bar
P2 absolute = 9.9 bar
(or 20.1°C)
P2 relative = 4.9 bar
P3 absolute = 13.1 bar
(or 29.8°C)
P3 relative = 8.1 bar
P4 absolute = 17.2 bar
(or 40.1°C)
P4 relative = 12.2 bar
P5 absolute = 21.9 bar
(or 50.0°C)
P5 relative = 16.9 bar
Hysteresis
P11 – P16 = 0.2 bar (or 1.0 K)
Control range limitations
P17 = 0.0 bar (or -46.4°C at 4.0 mA)
P18 = 30.0 bar (or 64.0°C at 20.0 mA)
Actual value correction
P21 = 0.0 bar
Alarm limit values
P30 absolute = 0.0 bar
P30 relative = -1.7 bar
(5.0-1.7 bar or -10.2°C for -10.0 K)
P31 absolute = 30.0 bar
P31 relative = 2.2 bar
(5.0+2.2 bar or 10.1°C for +10.0 K)
Alarm hysteresis
P32 = 0.2 bar (or 1.0 K)
Instead of the unit “bar” the unit “Pascal” also comes into use.
1 mbar = 1 hPa.