Ladder Diagram - Riello Condexa PRO NA 75P Installation, Operation And Service Manual

2.16 Ladder diagram

Wire line type
_______ factory wiring
_ _ _ _ field wiring
Key
905MN15 Main board
0-10V 0-10 V signal input
RT Room/heat demand
thermostat
TB1 Low voltage terminal box
TB2 High voltage terminal
box
905 PB Display board
RP Return temperature
sensor
DHW Indirect storage tank
h
h
h
h
9
10
h
h
11
12
h
13
14 h
h
h
h
h
h
h
h
h
sensor
EP Exhaust flue
temperature sensor
SP System temperature
sensor
OS Outdoor temperature
sensor
FS Flue gas air pressure
switch
FL Flow-meter
MPS Minimum pressure
switch
ST Water high-limit
safety thermostat
FP Supply temperature
sensor
h
2-4
LWCO External Low Water Cut Off
BUS1 Bus connection
BUS2 Bus connection
MS Power switch
SCP Indirect tank pump
CHP Central heating system
pump
AL Alarm output
TMP Boiler circulator
DE Ignition/detection
electrode
FA1 Fan
GV1 Gas valve
P Pump
IE Flame sensor
HV High voltage
43
INSTALLATION
g
P
g
P
g
P
Cable colour
b brown
h blue
r red
w white
bl black
g yellow/green
y yellow
gr green
gy grey
o arancione