Description Of The Product; General Description - DeDietrich 24 Installation And Service Manual

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4 Description of the product

Tab.94 Electrical connections
X1 – Terminal board M1
X2
X3
X4 – Terminal board M1
X6
X7
X8
X9
X10
X17 - Terminal board M2 (7-8)
X17 - Terminal board M2 (5-6)
X17 - Terminal board M2 (3-4)
X15
X16
SC
F1
F2
Spark
Tab.95 Cable colour key
BK
BN
BU
GNYE
GY
RD
WH
YE
GN
4 Description of the product
4.1

General description

The purpose of this gas-fuelled condensing boiler is to heat water to a temperature that is lower than boiling point at
atmospheric pressure. It must be connected to a heating installation and to a domestic hot water distribution system that is
compatible with its power and performance ratings. Features of this boiler:
Low pollutant emissions,
High-efficiency heating,
Combustion products discharged through a coaxial or split connector,
Front control panel with display,
Lightweight and compact.
156 INIDENS
Power supply:
L: Phase 230 V - 50 Hz
N: Neutral
: Earthing connector
Fan supply (FAN)
Gas valve (GV)
Pump (P) power supply
Earth connection
Sensors:
Limit thermostat (ST)
Return temperature (RT)
Flow temperature (FT)
Flue gas temperature (FS)
Sensors:
Domestic Hot Water (DHW) flowmeter (HS) – Only for Heating + DHW combi model
Water pressure sensor (WPS)
Pump PWM signal (PWM PUMP)
L-bus connection
Service interface
Room unit: Open Therm (OT), R-bus / 24 V room thermostat (RT)
Outdoor temperature sensor (OS)
External tank sensor (TS) / DHW inlet
BL: boiler block (with open contact)
External contact for enabling heating request RL(CH ENABLE)
Safety contact (boiler temporary stoppage with error display H.02.10)
Fuse: 2 A, 5x20 mm, 250 Vac, F
Fuse: 1.6 A, 5x20 mm, 250 Vac, T
Detection/ignition electrode
Black
Brown
Blue (and light blue)
Green/Yellow
Grey
Red
White
Yellow
Green
7804841 - 02 - 20012022