Parameter Meaning
SYSTEM CIRC.
PUMP
0 = stop circulation pump system
1 = start circulation pump system
CIRC.PUMP 0-100% for test of speed controlled circulation pump (Only for iTec XT Total EQ).
CONDENSER PUMP 0 = stop condenser pump (0V)
1 = start condenser pump (230V)
CONDENSER PUMP 0-100% for test of speed controlled condenser pump.
Depending on type and number of connected condenser pump, this parameter will contain different informa-
tion.
In the event of pumps with fixed speed, the selection 0 = stop and 1 = start are available
For iTec XT Standard, with fixed speed condenser pump, the flow has to be set from MANUAL TEST. Make sure
the "F" symbol is present in the display after finishing the test. If not, check the system for air, and that the flow
switch is correctly installed. Also consider if the size of the condenser pump is sufficient for the system.
REV.V. HOT WATER 0 = reversing valve in heating mode
1 = reversing valve in hot water mode
IMM. HEAT 1 0 = stop of internal immersion heater power stage 1
1 = start of internal immersion heater power stage 1
IMM. HEAT 2 0 = stop of internal immersion heater power stage 2
1 = start of internal immersion heater power stage 2
IMM. HEAT 3 0 = stop of internal immersion heater power stage 3
1 = start of internal immersion heater power stage 3
EXT.AUX.HEATER 0 = stop external heat source (230V)
1 = start external heat source (230V)
POT.FREE 0 = potential free output for control of auxiliary heater open
1 = potential free output for control of auxiliary heater closed
CIRC. PUMP DC 1 0 = stop circulation pump in discharge circuit 1
1 = start circulation pump in discharge circuit 1
SHUNT DC 1 = closes shunt in discharge circuit 1
0 = shunt unaffected
= opens shunt in discharge circuit 1
CIRC. PUMP DC 2 0 = stop circulation pump in discharge circuit 2
1 = start circulation pump in discharge circuit 2
SHUNT DC 2 = closes shunt in discharge circuit 2
0 = shunt unaffected
= opens shunt in discharge circuit 2
BY-PASS COOLING 0 = closed, normal for heating
1 = open, during cooling
SYSTEM SHUNT = closes shunt
0 = shunt unaffected
= opens shunt
RET.L. HP SHUNT = closes return line shunt in systems with buffer tank
0 = shunt unaffected
= opens shunt in systems with buffer tank
REV. V. POOL 0 = reversing valve in normal mode
1 = reversing valve in pool mode
ALARM 0 = no voltage on output 201.6 External alarm
1 = 230V on output 201.6 External alarm
6.2 Test the circulation pump
Optimum (variable speed) condenser/circulation(EQ) pump
Optimum (variable speed) condenser pump is factory installed in iTec XT Total, iTec XT Plus, iTec XT Compact. In iTec XT Total EQ the
same functionality is controlled by the extra inbuilt circulation pump.
Commissioning
iTec XT
Thermia AB AWIXT01CG0102
25
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