ECONCEPT TECH 35 A
13
EN
cod. 3540I341 - 04/2008 (Rev. 00)
Connection to a storage tank for domestic hot water production
The unit's electronic board is arranged for managing an external storage tank for domestic hot water production. Make
the plumbing connections according to the diagram of fig. 17. Make the electrical connections as shown on the wiring
diagram in sec. 4.6. It is necessary to use the kit code 1KWMA11W. At the next lighting, the boiler's control system rec-
ognises the presence of the hot water tank probe and automatically configures the DHW function, activating the display
and relevant controls.
fig. 17 - Diagram of connection to external hot water tank
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Sanitary hot water outlet
9
Tap water inlet
10
System delivery
11
System return
209
Boiler delivery
210
Boiler return
2.4 Gas connection
B
Before making the connection, ensure that the unit is arranged for operation with the type of fuel available and
carefully clean all the pipes of the gas system to remove any residues that could affect good functioning of the
boiler.
The gas must be connected to the relative connector (see fig. 31) in conformity with current standards, with rigid metal
pipes or with continuous flexible s/steel wall tubing, placing a gas cock between the system and the boiler. Make sure
that all the gas connections are tight. The capacity of the gas meter must be sufficient for the simultaneous use of all
equipment connected to it. The diameter of the gas pipe leaving the boiler does not determine the diameter of the pipe
between the unit and the meter; it must be chosen according to its length and loss of head, in conformity with current
standards.
B
Do not use the gas pipes to earth electrical appliances.
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9
11
10
210
209
