Monitoring Temperatures And System Units - Line B - Danfoss C37 User Manual

18
Monitoring temperatures
and system units - line B
B
Flow temp.
(S3)
Push and hold the shift button to see:
- the calculated flow temperature
- the desired return temperature limitations.
This display can also show the actual and desired flow and return
temperatures during DHW charging.
The activity of the motorized control valve is shown as arrows
below the valve symbol. When the circulation pump is
operating, it is indicated as ON below the pump symbol.
If a sensor is not mounted or is disconnected, the display will
indicate it as "- -".
If the sensor is short-circuited, the display will indicate
it as "- - -".
If you are in doubt, remove the controller and check the
ohmic value between the relevant terminals.
Relationship between temperature and ohmic value
Ω
°C
-50 805
845
-40
883
-30
-20 922
-10 961
1000
0
1039
10
20 1078
30 1117
1155
40
50 1194
60 1232
70 1271
1309
80
90 1347
100 1385
1423
110
1462
120
130 1501
140 1539
1578
150
Choose circuit II to see the actual temperatures of
the upper and lower tank sensors.
B
The grey
side of the
ECL Card
Controlled units
1 1 2
ON ON
60
Ω
1600
1500
1400
1300
1200
1100
1000
900
800
-50 -25
1 1 2
ON ON
52
3
ON
3 0 Return temp.
(S4)
0 25 50 75
3
ON
Actual upper tank sensor
temp. (S6)
Actual lower tank sensor
35
temp. (S5)
°C
100 125 150