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Danfoss District Energy
VI.GP.B1.02
DKDHR
Instructions
Kompakt H 28/35/42
7.11 Mounting of immersion sensor
Please note: Only for ECL 300 variants
The immersion sensor for accurate temperature measurement and
control in the cylinder is supplied separately and must be mount-
ed and connected to the controller on site.
Temperature range immersion sensor: 0 to 100 °C
Temperature range immersion pocket: 0 to 180 °C
2-wire cable (2 x 0.34 mm²) spliced is preassembled in the control-
ler.
1) Mount sensor pocket (separately delivered) in top or bottom of
cylinder.
2) Lay immersion sensor and cable from substation to cylinder and
mount immersion sensor in immersion pocket.
In case the length of the sensor cable is not long enough for your
property, it is recommendable to change the whole cable. The
minimum area for the cable is 0,4 mm² and max. length is 125 m.
For electrical connections please refer to enclosed schedule.
8.0 Filling, Start-up
Electrical connections
Application Sensor 1 (Cylinder top) Sensor 2 (Cylinder bottom)
P17
S1
Clamp 17
16
S2
Clamp
18
16
C37/47
S6
Clamp 22
16
S5
Clamp
21
16
C67
S6
Clamp 22
16
S5
Clamp
21
16
Sensor 2 (Return temp. sensor)
P16
S3
Clamp 19
16
S4
Clamp
20
16
C66
S5
Clamp 21
16
S6
Clamp
22
16
Check and tighten all connections before adding water to the
system, as vibrations during transport may have caused leaks.
After having added water to the system, tighten all the connec-
tions before performing leak test.
Then heat up the system and tighten the connections once again.
Before adding water to the system and first start-up, check if:
- pipes are connected according to the circuit diagram,
- expansion vessel, if any, is connected,
- heat meter is mounted,
- shut-off valves are closed,
- threaded and flanged connections are tightened.
Adding water to the system:
1. Pump must be switched off when water is added to the system.
2. Fill heat exchanger and system with water until the manometer
shows a working pressure, which corresponds to the system
5 m (approx. 1,5 - 2,0 bar)
3. Deaerate the system completely.
4. Start the pump.
