Bosch WORCESTER 35CDi User Manual

11
Fig 14 - Functional Wiring Diagram
Regulator Valve
Main Valve
Main Valve
Pump Control
Board
Flow Switch
CH Sensor
DWH Sensor
Air Pressure
Switch
Flame Sense
Over-Heat
Cut Off
24V Programmer
Water Pressure
Switch
DHW Control Knob
CH Control Knob
CH pressure adjust pot
Gas Valve Mode
Reset Button
Outputs
Inputs
Electronics/
microprocessor
(Safety Low Voltage)
MAIN CONTROL
BOARD
Convert AC to low
voltage electrics
Electronics
Electronics
Electronics
Relay
CH
Pump
Fan
(2 speed)
DWH
Pump
Electronics
Optional Link
Spark
Settings
Mains
Indicator
Transformer
Green
Indicators
Fuse F1
(2A Slow)
LIVE
IN
ST 12 Pin L
ST 12 Pin N
On/Off
Switch
Fuse F2
(1.25A Slow)
Spark
Electrodes
CH
Demand
Indicator
DHW
Demand
Indicator
Flame
Detect
Indicator
ST8
(Ns)
ST8
(Lr)
Room
Thermostat
ST8
(Ls)
REL 4
REL 3
REL 1
ST 15
Pin L
Brown
Brown
ST 23
X2
Pin 1
X1
Pin 1
From Main
Control Board
Grey
X3
Pin 1
PUMP
CONTROL
BOARD
ST1
Centre
Pin
LOW
HIGH
Red
ST 1
Pin L
Red
RedRed
N
N
Brown
White

Bosch WORCESTER 35CDi Specifications

General

Model	WORCESTER 35CDi
Type	Combi Boiler
Output	35 kW
Flow Rate	14.3 l/min
Fuel Type	Natural Gas
Mounting	Wall Mounted
Domestic Hot Water Output	35 kW
ErP Heating Efficiency	A
ErP Water Heating Efficiency	A
Warranty	5 years
Dimensions	760mm x 440mm x 360mm
Hot Water Flow Rate	14.3 l/min