29
INSTALLATION
excel HE -
Installation and Servicing
37 FUNCTIONAL FLOW WIRING DIAGRAM
WARNING.
Whilst effecting the required gas soundness test and purging air from the gas installation,
open all windows and doors, extinguish naked lights and
DO NOT SMOKE.
A. Electrical Installation
1.
Checks to ensure electrical safety should be carried out by a competent person.
2.
ALWAYS carry out the preliminary electrical system checks, i.e. earth continuity, polarity, resistance to earth and short circuit,
using a suitable test meter.
B. Gas Installation
1.
The whole of the gas installation, including the meter, should be inspected and tested for soundness and purged in
accordance with the recommendations of BS. 6891.
In IE refer to IS.813:2002.
2.
Purge air from the gas installation by the approved methods only.
C. Flue Sealing
1.
Check the integrity of the flue outlet and air inlet system to the boiler ensuring no leaks are evident from piping joints or flue/air
sampling points.
38 COMMISSIONING AND TESTING
LEGEND
b
-
blue
bk -
black
br -
brown
gr -
grey
or -
orange
pk -
pink
r
-
red
v
-
violet
w -
white
y
-
yellow
g/y -
green/yellow
DV Live 1
DV Live 2
DV Neutral
Pump Live
Pump Neutral
Pump Earth
M
od+
M
od-
GV + IGN Live
IGN Neutral
GV Neutral
GV Neutral
GV Earth
A
PS
A
PS
Fan Neutral
Fan Live
0V
A
nalog input
24V
5V
3
2
1
Control
0
OH
OH
Flow
Flow
DHW Temperature
DHW Temperature
PPS
PPS
DHW Flow
DHW Flow
Ionisation
Burner PE
Chassis PE
Supply Earth
R2 - SWL
R1/F1 - Live feed
F2 - Frost SWL
Supply Neutral
Supply Live
Fan Earth
BIC 580
Fan live in
A
nalogue out
24V
5V
0V
Fan live 1
Fan live 2
Fume 1
Fume 2
Expansion Board
1
2
3
4
5
6
7
8
Terminal
Strip
1
2
3
Earth
Fan2
A
C Fan, Single speed
1
C
2
NC
3
NO
A
ir
Pressure
Swirch
1
3
2
Divertor Valve
1
Detection
Electrode
1
1
Ignition
Electrode
Ignition
Electrode
1
2
In line spade
1
2
3
4
6 7 8
Ignitor/Gas Valve I/F
1
2 3
4 5
6
1
2
Overheat
Stat
1
2
3
A
C Pump
6
7
1
3 4 5
8
SIT Sigma 845 Gas Valve
1
2
Switch, SPST
1
2
DHW Thermistor
1
2
Flow Thermistor
1
2
Pump Proving Switch
1
2
DHW Flow Switch
Controls
Earth
Chassis
Earth
Burner
Earth
1
2
Condensate Bloc
k
age
Thermistor
ex7463
Interference
suppressor
r r
b b
or
or
v v
y y
g/y
br
g/y
b
br
w
r
b
k
g/y
g/y
b
b
y
y
v
v
r
r
or
or
b
k
b
k
b
k
b
k
w
w
w
w
w
w
w
w
br
br
r
r
br
b
g/y
g/y
b
gr
gr
gr
gr
g/y
b
k
r
br
b
b
k
N
A
C
lead
p
k
p
k
b
k
g/y
b
br
b
k
br
b
g/y
br
b
br
b
k
b
I
N
ST
A
L
L
A
T
I
O
N
Содержание HE C24
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