GB
20
B - WATER TEMPERATURE PROBES
(heating option)
• CTN type 3 k
Ω
at 25°C.
• Probe defect
:
If the temperature value measured is outside of the
measurement range (-20°C to +84°C), the indicator
light of the selected mode begins to flash and the
R1
and
R2
heating control outputs are disabled.
C - HEATING MODE
• With the remote mode inversion contact being closed
("Heating" indicator of the controller on), the closure of
the remote On/Off contact:
- activates the water circulation pump.
- activates the unit in heating mode, provided that
the water temperature is greater than the
corresponding adjustable cut-in threshold
AJ3
.
- the unit "on" indicator
GR
thus comes on. (If the
unit is solicited and the temperature is lower than
the threshold, this indicator flashes).
- authorizes the auxiliary heating outputs to function
in accordance with the diagram opposite.
•
NOTE:
- The cut-in of each of the auxiliary stages is signaled by the indicator light (
R1
and
R2
).
- The cut-in of the 2
nd
stage is timed at 5 min. (during this time period, the corresponding indicator light flashes).
• The opening of the remote On/Off contact causes the time delayed shutdown of the water circulation pump (5 min.) and
the immediate shutdown of the unit and auxiliary stages. The corresponding indicator lights are thus off.
D - COOLING MODE
• With the remote mode inversion contact being open (the controller’s “Cooling” indicator on), the closure of the remote
On/Off contact:
- activates the water circulation pump.
- Activates the unit in cooling mode, provided that the water temperature is less than the cut-in threshold:
- Unit operation is restricted if the water temperature is greater than 35°C.
- Operation is authorized for
only 30 minutes
if the temperature is greater than the adjustable threshold
AJ4
. This
time delay is reinitialized if the stop signal is present or if the temperature is greater than 35°C.
- The unit "on" indictor light
GR
glows steadily if the unit is activated. (If the unit is solicited and the temperature is
greater than the threshold, this indicator flashes).
• The opening of the remote On/Off contact causes the time delayed shutdown of the water circulation pump (5 minutes)
and the immediate shutdown of the unit. The unit "on" indicator
GR
is thus off.
• In this mode, the heating outputs are disabled.
Temperature (°C)
-10
16,600
0
9,796
10
5,971
20
3,748
25
3,000
30
2,417
40
1,598
50
1,081
60
747
Ohmic value (Ohm)
1 K
1 K
Water
temperature
AJ1 auxiliary heating set point
Shift
AJ 2
2
nd
stage
1
st
stage
