Glow-worm Ultracom 18sxi Installation And Servicing page 46
High efficiency
condensing system
boilers
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- Installation and servicing manual (64 pages) ,
- Instructions for use installation and servicing (48 pages) ,
- Installation and servicing (60 pages)
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HEATING
RETURN
THERMISTOR
HEATING
FLOW
THERMISTOR
r
r
b
bk
KEY
br
BROWN
b
BLUE
g/y
GREEN/YELLOW
gy
GREY
bk
BLACK
y
YELLOW
r
RED
w
WHITE
or
ORANGE
p
PURPLE
46
14 Fault Finding
FAN
b
y
bk
b
bk
WATER
PRESSURE
SENSOR
br
b
g/y
bk
w
b
r
bk
MAIN CONTROL
BOARD
w
r
gy
w
w
or
p
g/y
bk
GAS
CONTROL
VALVE
IGNITION
ELECTRODE
g/y
CHASSIS
EARTH
br
b
g/y
b
g/y
br
APPLIANCE
INTERFACE
BOARD
IGNITER
UNIT
PUMP
r
Diagram 14.4
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