ECONCEPT 51 A
Accessing the electrical terminal block
The electrical terminal block is located inside a sealed box at the bottom left of the cab-
inet. Make the electrical connections as shown in the wiring diagram on fig. 37 and run
the cables through the special cable glands.
2
1
4
5
6
7
8
9
10 11 12
A
B
C
(
( (
(
301
300
302
95
13 14 15 16 17 18 19 20 21 22 23 24
299
fig. 22 - Electrical terminal block
42
DHW temperature sensor (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)
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)
306
25 26 27 28 29 30
31 32
130/307
256
72
138
298
72B
42
139
cod. 3540S560 - 03/2009 (Rev. 00)
For connection in cascade
1.
Connect the modules as shown in fig. 23
A
B
25 26 27 28 29 30
31 32
25 26 27 28 29 30
fig. 23 - Connection in cascade
A
1st Module
B
2nd Module
C
3rd Module
D
4th Module
2.
Carry out all the electrical connections (terminals 4 to 24) 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. 23.
Settings
All adjustments must be made on module no. 1.
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.
3.5 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, ventilation openings, etc.
B
This C-type unit must be installed using the inlet and fume outlet ducts supplied
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.
A
For fume exhaust pipes longer than 1 metre, during installation take in account
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.
2 ÷ 4 mm
fig. 24 - Expansion
C
D
31 32
25 26 27 28 29 30
31 32
25 26 27 28 29 30
EN
31 32
43