Metal-Fach ecoMAX 860P, User'S Manual And Installation

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Connecting emission sensor: 1 – exhaust temp.
sensor type CT2S, 2 – sensor lead, 3 – flue.
Caution: Opening the boiler door
can
cause the emission
temperature to exceed the
sensor‘s thermal resistance,
which can burn the sensor out.
12.9 Checking temperature sensors
Temperature sensors CT4/CT6-P/CT2S can be
checked by measuring their resistance at the
given temperature. In the case of finding
significant differences between the value of
measured
resistance and the values
presented in the table below, the sensor must
be changed.
CT4 (KTY81)
Temp.
°C
Min.
Ω
Nom.
Ω
Max.
Ω
0 802 815 828
10 874 886 898
20 950 961 972
25 990 1000 1010
30 1029 1040 1051
40 1108 1122 1136
50 1192 1209 1225
60 1278 1299 1319
70 1369 1392 1416
80 1462 1490 1518
90 1559 1591 1623
100 1659 1696 1733
CT6-P (PT1000) – weather
Temp.
°C
Min.
Ω
Nom.
Ω
Max.
Ω
-25 901,6 901,9 1000,2
-20 921,3 921,6 921,9
-10 960,6 960,9 961,2
0 999,7 1000,0 1000,3
25 1096,9 1097,3 1097,7
50 1193,4 1194,0 1194,6
100 1384,2 1385,0 1385,8
125 1478,5 1479,4 1480,3
150 1572,0 1573,1 1574,2
CT2S (PT1000) - exhaust
Temp.
°C
Min.
Ω
Nom.
Ω
Max.
Ω
0 999,7 1000,0 1000,3
25 1096,9 1097,3 1097,7
50 1193,4 1194,0 1194,6
100 1384,2 1385,0 1385,8
125 1478,5 1479,4 1480,3
150 1572,0 1573,1 1574,2
12.10 Connection of boiler room
thermostat
Note: the boiler room thermostat
should be switched off if the whole
central heating system of the
building is supplied through a mixing
valve equipped with electric servo.
The regulator may work with mechanical or
electronic room thermostat, which opens the
contacts once the preset temperature has
been achieved.
Set-up the operation of room thermostat in:
Boiler settings
 Room thermostat 
Thermostat selection  Universal
Once the preset room temperature
has been reached, thermostat opens
its contacts and the display shows:
.
Once the temperature in the room, in which
the room thermostat is installed, has reached
the preset value, regulator reduces the preset
boiler temperature by the value set in Inc. p.
b. temp. thermostat and the display shows
. This will cause longer breaks in boiler
operation (the boiler will remain in
SUPERVISION mode) and the same,
temperature in heated rooms will drop.
Moreover, the boiler pump (CH pump) may be
interlocked for a certain time by opening the