Troubleshooting guide
MAGNUM VERSION 8 MANUAL REVISION 3.1
157
# Name Description
180 FLA COMP#10 Full Load Amps for compressor #10. Refer to Setpoint #171.
181 FLA COMP#11 Full Load Amps for compressor #11. Refer to Setpoint #171.
182 FLA COMP#12 Full Load Amps for compressor #12. Refer to Setpoint #171.
183 FLA COMP#13 Full Load Amps for compressor #13. Refer to Setpoint #171.
184 FLA COMP#14 Full Load Amps for compressor #14. Refer to Setpoint #171.
185 FLA COMP#15 Full Load Amps for compressor #15. Refer to Setpoint #171.
186 FLA COMP#16 Full Load Amps for compressor #16. Refer to Setpoint #171.
187 FLA COMP#17 Full Load Amps for compressor #17. Refer to Setpoint #171.
188 FLA COMP#18 Full Load Amps for compressor #18. Refer to Setpoint #171.
189 FLA COMP#19 Full Load Amps for compressor #19. Refer to Setpoint #171.
B-FLA PUMP
(Boiler/Pump Control)
The expended amp draw of the pump. If active this value is used to calculate the high and the
low ampere safeties limits. Refer to set points 75 and 76.
190 FLA COMP#20 Full Load Amps for compressor #20. Refer to Setpoint #171.
B-FLA BOILER
(Boiler/Pump Control)
The ‘Value’ is not used as this set point is set up to check the status of a digital input indicated
in the Starting Boiler Fault cell.
‘Time(sec)’ field: contains the delay before the system will place a boiler stage in a failed
state.
191 TEMP DIFF This temperature differential is used to replace the hardcoded temperature differential values
of several other Setpoints. It is used with the following:
Discharge temperature
Low oil seal temperature
Low/high ambient cutoffs
Compressor discharge superheat
If inactive, then hardcoded value of 5° F is used.
192 FRZ TEMP DIFF This value is added to Setpoint #102 “PUMP FREEZE PROTECTION” to determine if the
leaving temperature is above the freeze protection zone.
193 CND HI/LO ZONE The value in this Setpoint is the high and low zone for your target of Setpoint #50 “CND
TRGT“. If inactive then a default zone of 5 psi will be used, if metric .3 Bar.
194 CND 2
ND
ZONE The value in this Setpoint is the 2nd high and low zone for your target of Setpoint #50 “CND
TRGT“. If inactive then a default zone of 20 psi will be used, if metric 1.4 Bar.
195 LOW VOLTAGE If the voltage of any one of the voltage sensors is less than the value of this Setpoint, then a
Low Voltage alarm will be generated and the unit will be locked out. Voltage sensors are
specified in the General Information panel under the MAG V8 screen.
196 HI VOLTAGE If the voltage of any one of the voltage sensors is greater than the value of this Setpoint, then
a Hi Voltage alarm will be generated and the unit will be locked out. Voltage sensors are
specified in the General Information panel under the MAG V8 screen.
197
LEAD Procom
(Only HVAC)
If zero, then rotation of the process pumps will occur whenever the lead process pump is
turned off. If no rotation has occurred during the current day, a forced rotation at midnight
will occur.
If non-zero, then process pumps rotation is inactive and this value will specify the lead
process pump.
COND LOW AMB
(Only CENT)
Standard condenser logic dictates that a newly started compressor will use its own discharge
pressure as the control for the first five minutes. If this Setpoint is active and the ambient
temperature sensor is reading less than the value of this Setpoint, then this compressor’s
discharge pressure will remain in control for the additional time in seconds as specified in
the ‘Time (sec)’ field.
198 PROC PUMP FLT.
(Only HVAC)
If active, the Magnum checks for process pump failure. The process pump sensor reading
is ON (Digital).
199 MOP TARG PSI
(Only HVAC)
If active, maximum operating pressure (MOP) control will be added to the EXV control logic.
This value will be the MOP suction pressure target.
200 MOP PSI ZONE
(Only HVAC)
Added to and subtracted from Setpoint #199 to develop the upper and lower limits of the
MOP control zone.