TERMET ECOCONDENS SILVER PLUS-20, Инструкция по эксплуатации

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ECOCONDENS SILVER PLUS
ISU-646:2016/GR-H str.24
6.1.4. Maintenance of the flue water-water heat exchanger, item.21
The heat exchanger design provides turbulent water flow over the entire heat exchanger surface minimizing contamination of internal
surfaces of the exchanger. But when there are favorable conditions for the formation of solid impurities they must be removed. To do
this select one of the methods recommended by the manufacturers of heat exchangers such as Alfa Laval or SWEP.
6.1.5. Checking the temperature sensors
(
Table 6.1.5.1.)
- NTC sensor of C.H. water, D.H.W. and central heating return
•
Remove the sleeves from the NTC sensors,
•
Measure the sensor resistance
- outside temperature sensor
•
Disconnect the sensor cable from the terminals under
the flap of control panel
•
Measure the sensor resistance
- tank temoperature sensor
•
Disconnect the sensor cable from the terminals under
the flap of control panel
•
Measure the sensor resistance
Temperature
[
°
C]
NTC (DHW) and NTC (CH) sensor
resistance, NTC tank sensor and
temperature sensor resistance
Sensor: ß=3977
-10 55218 [
Ω
] ±0.75%
0
32624 [
Ω
] ±0.75%
10
19897 [
Ω
] ±0.75%
20
12.480 [
Ω
] ±0.75%
30
8.060 [
Ω
] ±0.75%
60
2.490 [
Ω
] ±0.75%
80
1.210 [
Ω
] ±0.75%
Table 6.1.5.1 Resistance of NTC sensor, outside temperature
sensor and tank NTC sensor, depending on the temperature
6.1.6. Checking the water pump operation
Fig. 6.1.6.1 Pump characteristic
The check should be done at the first start the boiler and when the following events occur:
- the pump is not working after turning on (does not raise the pressure in the C.H. system)
-
start the pump impeller by hand (not applicable to PWM pumps).
6.1.7. Ionisation current measurement
Fig. 6.1.7.1 Wiring diagram for the ionisation current measurement
To measure ionisation current, perform the following actions:
- put boiler in STAND-BY mode
- disconnect the cable from the electrode
- connect an ammeter (µA range) according to the above diagram
- turn on the boiler in C.H. mode
- read the value of ionisation current
Note: The value of ionisation current should be equal or higher than 2µA.