Installation, use and maintenance guide
COMPACT SLIM S25 EVO
Page
17
ENG
5.5 EXAMPLE OF HYDRAULIC DRAWING WITH BOILER COILS AND HEATING
Legenda
Key
Sonda PT100
Sensor PT100
Alimentazione dalla scheda alla VDEV3V
Power supply from the board to the VDEV3V
Alla morsettiera CN5 (Morsetti 5 - 6)
To the terminal block CN5 (Terminals 5 - 6)
Alla morsettiera CN3 (Morsetti 5 -7-8)
To the terminal block CN3 (Terminals 5 - 7 - 8)
A: andata impianto riscaldamento
A: heating system delivery
R: ritorno impianto riscaldamento
R: heating system return
S: saracinesca
S: gate valve
VNR: valvola di non ritorno
VNR: nonreturn valve
VEC: vaso di espansione chiuso per protezione
impianto
VEC: closed expansion tank for system protection
VM3VT: valvola miscelatrice term. fisso 55°C
VM3VT: thermostatic mixing valve, fixed point 55°C
VSP: valvola saracinesca (da parzializzare in funzione
delle perdite di carico dell'impianto)
VSP: gate valve (throttle according to pressure drop in
the system)
VDEV3V: valvola deviatrice 3 vie
VDEV3V: three-way diverting valve
APPARECCHIO
APPLIANCE
In order to guarantee correct absorption of the heat produced by the generator it is advisable to use a boiler tube with volume and
heat exchange capacity suitable for the power of the generator. The boiler tube must have a minimum capacity of 300l. In any case
the boiler tube must be capable of absorbing all the power that the generator is capable of delivering. If this rule is not observed, the
generator could raise the water temperature to such a point as to activate the safety limit thermostat which stops the fuel from
dropping into the burner and therefore forces the appliance to shut off.
The installer must install a three-
way motorized valve towards the system, powered by the appliance’s power unit. The power unit
trips if the domestic hot water sensor (SACS) drops below the minimum preset temperature, by supplying power to pin 8 of the
terminal block CN3, whereas when the SAVS sensor reaches the maximum preset temperature it supplies power to pin 7.
Consequently, the system must be designed in such a way that the hot water produced by the generator can reach the various
rooms by acting on the zone valves.
ATTENTION: it is mandatory to earth the generator. If this instruction is not observed serious damage, which
is not covered by warranty, will result to the body of the appliance. Have a skilled electrician check the
earthing. There must be no electric potential (Volt) between the generator earth and the system’s real earth
(earth plate). To prevent electrochemical corrosion of the appliance body do not use galvanised pipes and
fittings. Other materials must be earthed with special earthing cables in order to obtain a unipotential
earthing system.
S
R
S
VNR
S
S
A
VEC
VM3VT
VSP
A : andata impianto riscaldamento
R : ritorno impianto riscaldamento
S : saracinesca
VNR : valvola di non ritorno
VEC : vaso di espansione chiuso per protezione impianto
VSP : valvola saracinesca ( da parzializzare in funzione delle
perdite di carico dell' impianto).
VM3VT : valvola miscelatrice term. fisso 55°c.
VDEV3V : valvola deviatrice 3 vie
Alla morsettiera CN3
(Morsetti 5 - 7 - 8)
Alla morsettiera CN5
(Morsetti 5 - 6 )
Alimentazione dalla scheda alla VDEV3V
Sonda PT100
schema idraulico - bollitore a serpentino.dft 03/05/2016
APPA
R
E
C
C
H
IO
R
A
V
DE
V
3
V
Summary of Contents for COMPACT SLIM S25 EVO
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