Rinnai aiM 115, User And Installation Manual

Page: 33 / 66

29
Requirements and conditions
Electronic connections on the back of the control panel
The back of the boiler control panel is equipped with two sets of terminal blocks on which can be made connections with
external components, according to the image below.
On the right terminal block there are 3 terminals, identified with the initials QX1, QX2 and QX3, suitable for the connection of
pumps and high voltage components.
ATTENTION: in order to safeguard the electronic board it is necessary to make this connection by relay.
Terminal QX1 must not be used or modified, as it governs the operation of the boiler pump. Depending on the type of system,
the other two relays (QX2 and QX3) can be configured through parameters
5891
and
5892
(see the “Commissioning Menu”
paragraph).
On the left terminal board there are the connectors for the probes, identified with the initials BX1, BX2 and B3.
The DHW tank probe must be inserted in the sensor input B3, while the other two sensors can be connected to any probe
placed on the system. The configuration of these sensors can be done through parameters 5930 , 5931 and 5932 (see the
“Commissioning Menu” paragraph).
LIN
E
T
E
R
M
IN
A
L
1
2
3
4
5
6
7
8
9
1
0
11
1
2
1
2
3
4
5
6
7
8
9
1
0
11
1
2
HEATING CIRCUIT PUMP
DHW PUMP
HIGH EFFICIENCY BOILER PUMP
MODULATING BOILER PUMP
U
QX2
QX3
QX1
AUX2
S
IG
N
AL
13
1
4
15
1
6
17
1
8
19
2
0
21
2
2
23
2
4
25
2
6
27
2
8
13
1
4
15
1
6
17
1
8
19
2
0
21
2
2
23
2
4
25
2
6
27
2
8
BX1
B3/B38
B9
H5
BSB BUS
BX2
P1 PWM
COLLECTOR SENSOR
B3 / B38 DHW SENSOR
EXTERNAL PROBE
DIGITAL INPUT (Room thermostat)
SENSOR ANALOG
NOT ASSIGNED
ROOM UNIT
MODULATING BOILER PUMP
POWER SUPPLY
230V
POWER SUPPLY 230V
NOT ASSIGNED