Eliwell EWHT 1800LX, Manual

Page: 36 / 142

Internal exchanger
probe absent 1181: 1181: 1181: 1181: H42 H42 H42 H42 =disabled =disabled =disabled =disabled By timeout set in parameter 1189: 1189: 1189: 1189: dEt dEt dEt dEt ( defrost timeout)
Internal exchanger
probe present 1181: 1181: 1181: 1181: H42 H42 H42 H42
=evaporator
=evaporator =evaporator
=evaporator 1
1 1
1
probe probe probe probe
Temperature setpoint for the end of defrost set in parameter
1034: 1034: 1034: 1034: dSt dSt dSt dSt reached.
If this setpoint is not reached within the time set in parameter
1189: 1189: 1189: 1189: dEt dEt dEt dEt ( defrost timeout), the defrost will end by timeout.
Internal exchanger
probe absent 1181: 1181: 1181: 1181:
H42
H42 H42 H42 =disabled =disabled =disabled =disabled
By timeout set in parameter 1189: 1189: 1189: 1189: dEt dEt dEt dEt ( defrost timeout)
Internal exchanger
probe present 1181: 1181: 1181: 1181:
H42
H42
H42 H42 =evaporator =evaporator =evaporator =evaporator
1 1 1 1 probe probe probe probe
Temperature setpoint for the end of defrost set in parameter 1034: 1034: 1034: 1034: dSt dSt dSt dSt .
reached.
If this setpoint is not reached within the time set in parameter
1189: 1189: 1189: 1189: dEt dEt dEt dEt
(
defrost
timeout), the
defrost
will end by timeout.
Internal exchanger probe
absent 1181:
1181: 1181:
1181:
H42
H42
H42 H42 =disabled =disabled =disabled =disabled
By timeout set in parameter 1189:
1189: 1189:
1189: dEt
dEt dEt
dEt ( defrost timeout).
Internal exchanger probe
present 1181: 1181: 1181: 1181:
H42
H42 H42 H42 =evaporator =evaporator =evaporator =evaporator
1 1 1 1 probe probe probe probe
Temperature setpoint for the end of defrost set in parameter
1034: 1034: 1034: 1034: dSt dSt dSt dSt . reached.
If this setpoint is not reached within the time set in parameter
1189:
1189: 1189:
1189: dEt
dEt dEt
dEt (
defrost
timeout), the
defrost
will end by timeout.
7.1.6 7.1.6 7.1.6 7.1.6 Defrost Defrost Defrost Defrost modes modes modes modes
Defrost can be activated in four ways, as set in parameter 1028: 1028: 1028: 1028: dtY dtY dtY dtY .
7.1.7
7.1.7 7.1.7
7.1.7 Defrost
Defrost Defrost
Defrost with
with with
with compressor
compressor compressor
compressor stopped
stopped stopped
stopped (DEFAULT)
(DEFAULT) (DEFAULT)
(DEFAULT)
The defrost cycle with the compressor stopped is configured by setting parameter 1028: 1028: 1028: 1028: dtY dtY dtY dtY =electrical.
The compressor stops for the duration of the defrost , and defrost relay does not exist.
On completion of
defrost
, the
compressor
relay stays de-energised during the
dripping
time set in 1044:
1044: 1044:
1044: dt
dt dt
dt if it is not equal
to zero.
Defrost ends:
End End End End of of of of defrost defrost defrost defrost
with with with with compressor compressor compressor compressor
stopped stopped stopped stopped
7.1.8
7.1.8
7.1.8 7.1.8 Defrost
Defrost
Defrost Defrost with
with
with with electrical
electrical
electrical electrical heaters
heaters
heaters heaters
Defrost with electrical heaters is configured by setting 1028: 1028: 1028: 1028: dtY dtY dtY dtY =electrical.
The compressor stops for the duration of the defrost cycle and the relay configured as defrost regulator output and that
the electrical heaters are connected to activates. See Electrical Heaters for defrost section.
On completion of defrost , the electrical heaters are switched off and the compressor remains off for the dripping time set
in parameter 1044: 1044: 1044: 1044: dt dt dt dt , if it is not equal to zero.
Defrost ends:
End End End End of of of of defrost defrost defrost defrost
with with with with electrical electrical electrical electrical
heaters
heaters
heaters heaters
7.1.9 7.1.9 7.1.9 7.1.9 Hot Hot Hot Hot gas gas gas gas defrost defrost defrost defrost
Hot gas defrost
is configured by setting parameter 1028:
1028: 1028:
1028: dtY
dtY dtY
dtY = xxx
The compressor stays on for the entire duration of the defrost cycle and the relay configured as defrost regulator output
and that the solenoid valve is connected to activates. See Hot gas solenoid valve section.
On completion of the
defrost cycle, the solenoid valve relay is de-energised and the dripping set in parameter 1044:
1044:
1044: 1044: dt
dt
dt dt is
disabled if not equal to zero. The compressor relay is once again controlled by the compressor regulator.
Defrost ends:
End End End End of of of of reversing reversing reversing reversing
valve valve valve valve defrost defrost defrost defrost
IMGINFO
IMPORTANT
IMPORTANT IMPORTANT
IMPORTANT
: parameters 1011: 1011: 1011: 1011: dOn dOn dOn dOn
////
1012: 1012: 1012: 1012: dOF dOF dOF dOF
////
1013: 1013: 1013: 1013: dbi dbi dbi dbi (see Compressor safety timing) have priority.
7.1.10 7.1.10 7.1.10 7.1.10
Defrost Defrost Defrost Defrost in in in in FREE FREE FREE FREE mode mode mode mode
The defrost cycle with the compressor stopped is configured by setting parameter 1028: 1028: 1028: 1028: dtY dtY dtY dtY = Free Free Free Free .
The compressor remains under the control of the compressor regulator for the duration of the defrost cycle and the relay
configured as defrost and that the defrost heaters are connected to activates. See Electrical Heaters for defrost section.
The heaters are switched off on completion of the defrost cycle. During dripping , the compressor continues to thermo
regulate.
Defrost ends in the same way as the previous case.
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