18
Sigma
Fig. 39
101
X4
X5
121
86
63
1
4
1
5
X8
G C P
JP
X3
Key
63.
CH temperature setting
86.
Reset switch
101.
Main P.C.B.
121.
Boiler shut-down warning (Led)
X3-X4-X5-X8.
Connectors
JP.
Link
Temp.
sensor
NTC 34
kOhm
1000 kOhm
185 kOhm
80 kOhm
Temp.
25
°
C
60
°
C
82
°
C
2.07.03 Terminal Position
Fig. 38
2.08 Electrical connection
The boiler must be connected to a single phase 230V 50Hz electricity supply with a 3 A max. fuse and a bipolar switch
with contact opening of at least 3 mm fitted between the boiler and the electricity supply. The boiler must always be
connected to an efficient earth installation. In the electrical box, there is a 3 pole terminal block for connecting the
boiler to the mains (230V 50Hz) and a 3 pole block for connecting a
circulating pump (not supplied). See Wiring diagram (fig. 41a) for the
connection of external control.
When the boiler is connected to an electricity main, it is essential TO
ENSURE CORRECT POLARITY (LIVE: brown cable, NEUTRAL: blue
cable, EARTH: yellow-green cable)
.
All wiring must conform to current I.E.E. regulations.
Note
: If the power supply cable has to be replaced, use “0.75mm
(24/0.20) cable only to BS6500 with a maximum external diameter of
8 mm.
P
D, E
Q
Q
l
B
C
A
G
F
L
J
H
H
K
N
N
M
M
Q
Directly below an opening, air brick, (0-7 kW)
opening windows, etc.
(>7-14 kW)
(>14-32 kW)
(>32-70 kW)
Above an opening, air brick, (0-7 kW)
opening windows, etc.
(>7-14 kW)
(>14-32 kW)
(>32-70 kW)
Horizontally to an opening, air brick, (0-7 kW)
opening windows, etc.
(>7-14 kW)
(>14-32 kW)
(>32-70 kW)
Below gutters, soil pipes or drain pipes
Below eaves
Below balconies or car port roof
From a vertical drain pipe or soil pipe
From an internal or external corner
Above ground roof or balcony level
From a surface facing the terminal
(also see 6.1.2)
From a terminal facing the terminal
From an opening in the car port ( e.g. door,
window) into the dwelling
Vertically from a terminal on the same wall
Horizontally from a terminal on the same wall
From the wall on which the terminal is mounted
From a vertical structure on the roof
Above intersection with roof
Dimensions
Terminal position
(kW input expressed in net)
Balanced flues room
sealed
Open flues
Natural
draught
Natural
draught
Fanned
draught
Fanned
draught
Aa
300 mm
600 mm
1500 mm
2000 mm
300 mm
Not allowed
300 mm
Ba
300 mm
300 mm
300 mm
600 mm
300 mm
Not allowed
300 mm
Ca
300 mm
400 mm
600 mm
600 mm
300 mm
Not allowed
300 mm
D
300 mm
75 mm
Not allowed
75 mm
E
300 mm
200 mm
Not allowed
200 mm
F
600 mm
200 mm
Not allowed
200 mm
G
300 mm
150 mmb
Not allowed
150 mm
H
600 mm
300 mm
Not allowed
200 mm
I
300 mm
300 mm
Not allowed
300 mm
J
600 mm
600 mm
N/A
600 mm
K
600 mm
1200 mm
N/A
1200 mm
L
1200 mm
1200 mm
N/A
1200 mm
M
1500 mm
1500 mm
N/A
1500 mm
N
300 mm
300 mm
N/A
300 mm
O
N/A
N/A
N/A
50 mm
P
N/A
N/A
See Table 2
and Fig. 6b
N/A
Q
N/A
N/A
See Table 2
and Fig. 4
150 mm
NOTE N/A = Not applicable
a
I
n addition, the terminal should not be nearer than 150 mm (fanned draucht) or 300 mm (natural draught) to an opening in the building fabric formed for the purpose of accommodating
a built-in element such as a window frame, (see Figure C2). Separation distances are linked to the rated heat inputs as shown.
b
This dimension may be reduced to 75 mm for appliances of up to 5 kW heat input.
A approved terminal guard (part. No. C2) should be screwed
to the wall centrally over the terminal, when the distance
is less than 2 m from the outside floor.
Содержание SIGMA
Страница 17: ...17 Sigma Pipe and fittings reduction table shown in Metres ...
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