Supplied By www.heating spares.co Tel. 0161 620 6677
23
Tempra 12 / 18
fi g. 16a
Adjustments on the electronic board
Follow the indications shown in the figure to access the electronic board.
Potentiometer position and functions
P1
= Central heating temperature adjustment
P2
= Domestic hot water temperature control
P3
= Heating output adjustment
P4
= Gas pressure adjustment for ignition
P5
= Minimum gas pressure adjustment
X6
X1
X2
X3
X4
1
2
1
2
1
3
1
2
3
4
5
6
7
8
9
10
1
2
3
4
5
6
7
8
9
10
11
12
13
2
1
X5
L1
L2
L3
L4
L5
+
-
+
-
Transformer
P2
DHW
X12
1
2
+
-
P3
+
-
P5
+
-
P4
JP02
JP01
JP03
1
2
3
4
5
6
7
8
9
X10
Nat/LPG
P1
CH
X11
RY100
RY101
PC
PNO
L
N
HL
HL
MV1 MV2 MV3 MV4
FAN
L
N
X8
X7
RY1
RY2
PMF03F
JP01 inserted
= Diverting valve System
JP01 not inserted
= Not able
JP02:
Jumper inserted for
natural gas operation
Jumper inserted for LPG operation
Jumper adjustment
fi g. 16b
fi g. 17
