Unical DUA plus - Positioning of Jumpers; Resistance Values for Sensors

22
Installation info
2.3.2 - POSITIONING OF THE JUMPERS (their purpose is to implement some functions necessary for the operation
fig. 23
JUMPERS ON THE DISPLAY PCB
JP4 : GAS TYPE SELECTION
Naturl gas: Jumper on NAT (standard supply position)
Liquefied Petroleum Gas: move jumper to LPG position
The standard supply position correspond to the gas type shown on all
the labels within the boiler
JP3 : EXTRNAL TEMPERATURE COMPENSATION FOR OUTER SENSOR
Boiler with outer temperature sensor: jumper on
J
Boiler without outer temperature sensor: jumper on OFF
JP2 : SELECTION OF PUMP OPERATION MODE
If pump has to work continuously: jumper on 1
If pump has to stop after an overrun of 5 min since the stop of the heating
demande: jumper on pos. 2 (standard supply position)
JP1 : CHRONOSTAT FUNCTION (do not change posion of the jumper)
This function is not yet available.
Jumper on (Standard supply position: for a good working keep the jumper in
this position).
T°C0123456789
0 32755 31137 29607 28161 26795 25502 24278 23121 22025 20987
10 20003 19072 18189 17351 16557 15803 15088 14410 13765 13153
20 12571 12019 11493 10994 10519 10067 9636 9227 8837 8466
30 8112 7775 7454 7147 6855 6577 6311 6057 5815 5584
40 5363 5152 4951 4758 4574 4398 4230 4069 3915 3768
50 3627 3491 3362 3238 3119 3006 2897 2792 2692 2596
60 2504 2415 2330 2249 2171 2096 2023 1954 1888 1824
70 1762 1703 1646 1592 1539 1488 1440 1393 1348 1304
80 1263 1222 1183 1146 1110 1075 1042 1010 979 949
90 920 892 865 839 814 790 766 744 722 701
Relation between the temperature (°C) and the resistance (Ohm) of the heatin temp. sensor SR and the D.H.W. temp. sensor
SR. Example: At 25 °C the nominal resistance is 10067 Ohm - At 90 °C the resistance is 920 Ohm.
TABLE OF THE RESISTANCE VALUES ACCORDING TO THE TEMPERATURE OF THE HEATING SENSOR (SR) AND
D.H.W. TEMPERATURE SENSOR (SS)
NAT
GPL
OFF
JP4
JP3
J
JP2
JP1
1
2
1
2
POSITIONING OF THE JUMPER