Supplied By www.heating spares.co Tel. 0161 620 6677
14
221481C
Diagram 8.1
BOILER COMPONENTS
A. BOILER THERMOSTAT
H. GAS RATE ADJUSTMENT SCREW
B. GAS CONTROL KNOB
H. (UNDER COVER SCREW)
C. IGNITION BUTTON
J. GAS SERVICE COCK
G. VIEWING WINDOW
K. PRESSURE TEST POINT
L. PILOT BURNER ADJUSTMENT SCREW
J (SHOWN OFF)
B
H
G
L
MODEL AND
SERIAL NUMBER
A
C
K
2416
7 Electrical Wiring
Diagram 7.2
WIRING DIAGRAM FOR CONTROL BOX
2419
BROWN
BLUE
GRN / YELLOW
BROWN
BLUE
240~50Hz
PERMANENT
MAINS SUPPLY
FUSED AT 3A
L
N
L
N
CIRCULATION
PUMP
CHASSIS
EARTH
POST
GRN/YEL
GAS VALVE
BROWN
BLUE
PURPLE
RED
RED
BROWN
7
3
9
8
6
COMBINED THERMOSTAT
AND PUMP OVERUN
BROWN
BLUE
GRN / YELLOW
Remove Red Link
between 9 and SL
when fitting a time
control etc.
(If link is not
removed the
circulation pump
will run constantly.)
SWITCHED
CONTROL
TIME SWITCH
PROGRAMMER ETC.
(if fitted)
N L SL 9
8
7
N L
9
8
7
SL
8 Commissioning