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Accessing the electrical terminal block
The electrical terminal block can be accessed after removing the front panel. Make the
electrical connections as shown in the wiring diagram in fig. 41 .
1
4
5
6
7
8
9 1 0 1 1 1 2 1 3
(
( )
)
A B
300
301
32
302
1 6 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7
72
299
138
298
139
fig. 23 - Electrical terminal block
32
Circulating pump (not supplied)
72
Room thermostat (not supplied)
72b
Room thermostat (not supplied)
95
Diverter valve (not supplied)
A = Heating phase
B = DHW phase
C = Neutral
NOTE: For valves with 2 wires and spring return, use the connections B and C
130
DHW circulating pump (not supplied)
138
External probe (not supplied)
139
Remote timer control (not supplied)
155
Hot water tank temperature probe (not supplied)
256
Modulating heating circulating pump signal
298
Cascade temperature sensor (not supplied)
299
Input 0-10 Vdc
300
Burner lit contact (voltage-free contact)
301
Fault contact (voltage-free contact)
302
Remote reset input (230 Volt)
306
Heating system circulating pump (not supplied)
307
Heating system second circulating pump (not supplied)
For the connection in cascade
Note: The boiler's electronics can manage up to 6 modules.
1.
Connect the modules as shown in fig. 24 (example with 4 modules)
A
B
28 29 30 31 32 33 34 35
28 29 30 31 32 33 34 35
fig. 24 - Connection in cascade
A
1st Module
B
2nd Module
48
EN
ENERGY TOP W 70 - W 80 - W 125
All manuals and user guides at all-guides.com
306
1 4 1 5
130/307
C
95
2 8 2 9 3 0 3 1 3 2 3 3 3 4 3 5
72B
155
C
D
28 29 30 31 32 33 34 35
28 29 30 31 32 33 34 35
cod. 3540S806 - Rev. 00 - 09/2013
C
3rd Module
D
4th Module
2.
Carry out all the electrical connections (terminals 4 to 27) on module no. 1
3.
On the remaining modules, only connect the power supply and possible contacts
for: burner lit (300), fault contact (301) and remote reset input (302).
4.
Switch on the power to the entire cascade
5.
After the "FH" procedure, check correct operation of the cascade:
•
Module 1: arrow symbol at top left of the display
•
Module 2: arrow symbol at bottom right of the display
•
Module 3: arrow symbol at bottom right of the display
•
Module 4: arrow symbol at top right of the display
If this does not occur, disconnect the power and check the wiring in fig. 24.
Settings
All adjustments must be made on all the modules.
Possible faults
If the electrical connection of a module is disconnected for any reason, module 1 will ac-
tivate fault F70.
If the electrical connection of a module is disconnected for any reason, the next module
will activate fault F71.
3.6 Fume ducts
The unit is a "C type" with sealed chamber and forced draught, the air inlet and fume out-
let must be connected to one of the following extraction/suction systems. The unit is ap-
proved to operate with all the Cxy and Bxy flue configurations given on the dataplate
(some configurations are given by way of example in this section). Some configurations
may be expressly limited or not permitted by law, standards or local regulations. Before
proceeding with installation, check and carefully observe the above-mentioned prescrip-
tions. Also, comply with the provisions on the positioning of wall and/or roof terminals and
the minimum distances from windows, walls, vents, etc.
B
This C-type unit must be installed using the inlet and fume exhaust ducts sup-
plied by the manufacturer in accordance with UNI-CIG 7129/92. Failure to use
them automatically invalidates every warranty and relieves the manufacturer of
any liability.
For fume exhaust pipes longer than 1 metre, during installation take into ac-
A
count the natural expansion of the materials when the boiler is operating.
To prevent deformations, leave an expansion space of approx. 2 ÷ 4 mm for every metre
of pipe.
Connection with coaxial pipes
OUT
GND
256
fig. 25 - Examples of connection with coaxial pipes (
For coaxial connection, fit the unit with one of the following starting accessories. For the
wall hole dimensions, refer to sec. 5.1. Any horizontal sections of the fume exhaust must
be kept sloping slightly towards the boiler, to prevent condensate from flowing back to-
wards the outside and causing dripping.
fig. 26 - Starting accessories for coaxial ducts 041007X0
= Air /
= Fumes)
125
81
80
80
120
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