3
B 242 - XTE 602 Eng. C1
22.11.10 AM
REV. 02
We reserve the right to make changes witout notice
COSTER
7. SCHEMATIC & WIRING DIAGRAMS
8. SITING OF CONTROLLER, VALVES & DETECTORS
8.
1
Controller
The controller must be sited in a dry ambience which meets the permitted ambiental limits shown under 4.TECH-
NICAL DATA. If positioned in an ambience classified as “Dangerous” it must be enclosed in a cabinet for electrical
apparatus constructed according to the regulations in force for the class of danger involved.
It can be installed on a DIN rail or in a DIN modular enclosure.
8.
2
Plant flow temperature detectors B1 and B5
With plant pump on flow they must be installed downstream of this; with pump on return they must be installed at
least 1.5 meters downsteam of regulating valve.
8.
3
Outside temperature detector B2
This must be installed outside the building, on the north or north-west side, at least three meters from the ground
and protected from direct sunlight, and as far as possible from windows, doors, chimneys or other possible direct
thermal disturbances.
8.
4
Ambient temperature detectors B3 and B6
These must be installed at a point which represents the average temperature of a representative room (eg : living
room) at a height of 1.5 ... 1.6 metres from the floor, on an internal wall as far as possible from windows, doors and
sources of heat ; corners, shelving and curtains must be avoided.
8.
5
Anticondensing detector B4
Can be used only if the boiler is provided with an anticondensing pump and must be installed on the return pipe to
the boiler between the anticondensing pump connection and the boiler itself.
9. WIRING
Proceed as follows :
• Separate base and cover
• Mount base on DIN rail and check that securing elements (5.
4
) hold it firmly in place.
• Carry out wiring according to the diagram and in observance of the relevant regulations in force, and using cables of :
– 1.5 mm
2
for power and relay control outputs
– 1 mm
2
for sensors and remote control
– 1 mm
2
for C-Bus and C-Ring. For wire length limits please see technical data sheets T 021 and T 022
• Reposition the cover on the base / terminal block and fasten with the 4 screws supplied (5.
3
).
• Check that voltage is correct and supplied by the dedicated auxiliary line, measuring it upstream of the protec-
tion (circuit breaker, fuse....).
• Power up the device.
You are advised not to insert more than two cables in a single terminal of the controller and if necessary to use external junction
boxes.
B1 – Zone1 flow temp. detector
B2 – Outside temp. detector
B3 – Ambient temp. detector 1
B4 – Anticondensing temp. detector
B5 – Zone 2 flow temp. detector
B6 – Ambient temp. detector 2
c1 – Zone 1 Remote Extension SPST switch
c2 – Zone 2 Remote Extension SPST switch
k1...3 – On-Off alarm contacts
L – Line 230 V AC (or 240 V AC for UK market)
N – Neutral
M1 – Heating pump 1
M2 – Heating pump 2
R – Remote control for modifying programmes Zone 1 and / or 2
Y1 – Heating valve 1
Y2 – Heating valve 2
C-Bus – Transmission telemanagement data (Plug-in ACB 468 C1)
C-Ring – Exchange data between controllers
T
T
T
10
B7
0C C
8 9
L N N
L
T
k1 k2 k3
E2 E3
E1
Co Cl
Op
4
1 2 3
5 6 7
Co Cl
Op
D U
E
B6
M
B5
B4
M
B3
B2
M
B1
T
T
M1
M2
B2
B1
B4
B3
B6
B5
R
N
230 Volt AC
(or 240 V AC
for UK market)
L
Y1
Y2
0
11 12
13 14
XTE 602
C BUS
C RING
c1
c2
