UST500 CONTROL BOARD
54 06MC0074@00B0100
14/04/2010
Diagram B
Fixed differential (HI14=1)
Fixed differential
based on external temperature
Band > 0
Fixed differential
based on external temperature
Band < 0
HI12>0
HI12<0
HEAT
HI10 Internal exchanger heaters dynamic differential setpoint in integrated use
HI11
Maximum dynamic differential internal exchanger heaters in integrated use
If HI11=0 , adjustment depends on the heat setpoint which is based on the external temperature.
HI12 Internal exchanger heater digital dynamic differential in integrated use
Ext Air temperature External air temperature
Offset
Differential
Adjustment in integrated use
Adjustments are made during integrated use as indicated below:
1 heater
(HI04=1)
(°°)
2 heaters
(HI04=2)
HEAT
HI06 Internal exchanger heaters regulator setpoint for antifreeze
HI13 Internal exchanger heater regulator hysteresis for antifreeze
HI15
Differential setpoint primary exchanger heater 2 on in integrated use
NOTE: HI15 must be greater than HI13
Temp regulation probe
Temperature of regulation probe
See parameter
tr03-Select temperature control probe in HEAT
Heating setpoint
See parameter
tr05-Temperature control setpoint in HEAT
Differential on Ext.
Temperature
See par. H14 and diagrams A/B
Heaters
Heater state
(°°) heater 1
0
Offset
Temp Ext Air
HI10
HI11
HI12>0
0
Offset
Temp Ext Air
HI10
HI11
HI12<0
OFF
Heaters
Temp. regulation probe
HI13
ON
Set Point heating - di fferential on Ext. Temp.
HI13
HI13
HI15
Electrical
Heaters
regulation probe
Electrical
Heaters 2
ON
Electrical
Heaters 1
ON
SET POINT HEAT (tr05) - differential on Ext. temp
OFF
