Plum ZAB-14, Service And Assembly Manual

Page: 37 / 60

37
The regulator cooperates only with an
exhaust temperature sensor type CT2S.
In order to inspect the sensor, it is
necessary to use a very precise
multimeter – otherwise, the sensor can
only be checked roughly.
CT4
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
CT4-P
Temp.
°C
Min.
Ω
Nom.
Ω
Max.
Ω
-30 609 624 638
-20 669 684 698
-10 733 747 761
0 802 815 828
10 874 886 898
20 950 961 972
CT2S
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
13.7 Connecting room thermostat
for mixer circuits
Room thermostats connected to
executive module B as per influences
mixer 1 and mixer 2 circuits. If the entire
building heating system is fed by the
mixer circuit, all room thermostat
settings for boiler should be disabled.
After opening of the contacts, the room
thermostat decreases the preset mixer
circuit temperature by the value of
preset mixer temperature decrease from
thermostat. This parameter can be found
in:
Mixer 1 settings > Mixer room
therm.
The value of this parameter should be
chosen in such a way, that after
activation of room thermostat (opening
of contacts), the temperature in the
room decreased.
13.8 Connecting reserve boiler
The regulator can control operation of a
reserve (gas or oil) boiler. In such case it
is not necessary to activate and
deactivate the boiler manually. Reserve
boiler
will be activated when
temperature of the biomass boiler drops
and
deactivated if appropriate
temperature of the biomass boiler is
reached. Only a qualified installer is
allowed to connect a reserve (e.g. gas)
boiler. Such operation should be
executed in accordance with technical
documentation of this boiler.
Connecting a reserve boiler eliminates a
possibility of connecting alarm signalling.
Reserve boiler should be connected to
87-88 terminals through a relay in
accordance with the figure below.