Glow-worm SwiftFlow 120 Servicing Instructions page 21

AIR
PRESSURE
SWITCH
NO
gry r
230V-50Hz
PERMANENT MAINS
SUPPLY FUSED AT 3A
1 2 N L
p p g/y b br
g/y
y+or 26Volts ac
gry+p 3 Volts dc
CN7
or y p gry
USER CONTROL
BOARD
Supplied By www.heating spares.co Tel. 0161 620 6677
4 R e p l a c e m e n t o f P a r t s
DC
FAN
C
NC
v
PUMP
THERMISTOR
CH
CENTRAL HEATING
DHW
SELECTOR
FLOW
SWITCH
SWITCH
L TRANSFORMER
N
b br
CN3
N L
p
MAINS
p
FUSE 2AT
r
r
br
CN4
br
or
or
p
p
gry
p
CN5
y
w
or
w
screened
r
w
gry
b
y
g
THERMISTOR
p
DHW
WATER
PRESSURE
SWITCH
r
bk
b br
br b
N L
230V~
TXR
CN7
KEY:
FUSE
w - WHITE
3.15AT
b - BLUE
bk - BLACK
br - BROWN
g/y - GREEN/YELLOW
CN1
gry - GREY
or - ORANGE
v - VIOLET
r - RED
y - YELLOW
p - PURPLE
MAIN CONTROL BOARD
w
21
screened
r
w
FAN
gry
DRIVER
BOARD
b
y
g
gry p
p
MULTI-FUNCTIONAL
CONTROL
C
NO
NC
r
DHW
HIGH LIMIT
CONTROL
gry
v r
CN6
C NCNO
gry
p
y
or
p
p
bk
y
bk
r
CHASSIS
EARTH
Diagram 4.11
or y
g/y
g/y
221045A