Immergas EOLO Extra 24 kW Manual de usuario
EOLO Extra kW
Instant wall-hung boilers
airtight chamber
for outdoors
EOLO Extra kW
1
STEEkW ed 01/06 EOLO Extra kW
Technical Documentation Technical Documentation
EOLO Extra kW
Wall-hung room sealed fan assisted boiler for
outdoors.
EOLO Extra 24 kW
EOLO Extra 28 kW
EOLO Extra 32 kW
EOLO Extra kW is a wall-hung room-sealed fan-assisted
boiler (type C) for central heating and producing domestic
hot water.
e boilers of the EOLO Extra kW series are type-approved
for installing outside the building in the open, using a top
cover kit (optional).
e boiler is available with an output power of 24 kW (20,640
kcal/h), 28 kW (24,080 kcal/h) and 32 kW (27,520 kcal/h).
One of the standard features on the boiler is an antifreeze
system that protects against temperatures as low as -15°C (but
the connecting pipes have to be lagged).
e boiler is easily controlled remotely controlled by a
Remote Control (see the CAR technical data sheet) which works
together with a microprocessor controlled p.c.b. with continuo-
us 2-sensor flame modulation (d.h.w. and central heating).
e knobs on the control panel are for setting boiler ope-
rating parameters. is panel visually displays status and the
functioning mode with the LEDs on it. Malfunctions can also
be seen on the Remote Control display.
e hydraulic circuit is equipped with a water-gas exchan-
ger in copper that uses a new 3-way electric valve group
and a new pump group made in a composite material on
which the circulator and the devices to control the hydraulic
circuit are housed (the system’s absolute pressure switch, a 3-bar
safety valve, an automatic system by-pass, etc.).
General features.
e supply of combustion air to inside the sealed chamber and
the expulsion of fumes are ensured by a fan whose correct ope-
ration is controlled by a differential fumes pressure switch.
2
STEEkW ed 01/06 EOLO Extra kW
Technical DocumentationTechnical Documentation
EOLO Extra 24 kW main dimensions and connections.
Legend:
G - Gas supply
AC - D.h.w. outlet
AF - D.h.w. (cold) inlet
R - System return
M - System delivery
V - Electrical connection
Height (mm) Width (mm) Depth (mm)
775 440 240
CONNECTIONS
GAS DOMESTIC
WATER SYSTEM
G AC AF R M
1/2” 1/2” 1/2” 3/4” 3/4”
EOLO Extra 28-32 kW main dimensions and connections.
Legend:
G - Gas supply
AC - D.h.w. outlet
AF - D.h.w. (cold) inlet
R - System return
M - System delivery
V - Electrical connection
Height (mm) Width (mm) Depth (mm)
775 520 250
CONNECTIONS
GAS DOMESTIC
WATER SYSTEM
G AC AF R M
1/2” 1/2” 1/2” 3/4” 3/4”
3
STEEkW ed 01/06 EOLO Extra kW
Technical Documentation Technical Documentation
Legend:
1 - Stand by LED
2 - Burner on LED
3 - D.h.w. on LED
4 - Central heating on LED
5 - Temperature LED – Ignition stop malfunction
6 - Temperature LED – Flue pressure switch malfunction
7 - Temperature LED – System pressure insufficient malfunction
8 - Temperature LED – Circulation insufficient malfunction
9 - Temperature LED – Delivery probe faulty
10 - Temperature LED – Domestic hot water probe faulty (optional)
11 - Temperature LED – Overheating lock
12 - Stand-by / On / Programming / Reset main switch
13 - Parameters selection knob
14 - Parameters modification knob
15 - Boiler manometer
EOLO Extra kW Control panel.
4
STEEkW ed 01/06 EOLO Extra kW
Technical DocumentationTechnical Documentation
EOLO Extra 24 kW main components.
Legend:
1 - Boiler pressure gauge
2 - Domestic water probe
3 - D.h.w. flow switch
4 - Gas valve
5 - System pressure switch
6 - Burner
7 - Combustion chamber
8 - Airtight chamber
9 - Fan
10 - Testing hole (air A) - (fumes F)
11 - Pressure point with positive signal
12 - Pressure point with negative signal
13 - Flue pressure switch
14 - Delivery probe
15 - Safety thermostat
16 - Draught diverter
17 - Primary exchanger
18 - Ignition and detection electrodes
19 - System expansion vessel
20 - Automatic air vent
21 - Boiler circulator
22 - D.h.w. exchanger
23 - 3-bar valve (motorised)
24 - Automatic by-pass
25 - 3-way safety valve
26 - System draining cock
27 - Domestic water draining fitting
28 - System filling valve
5
STEEkW ed 01/06 EOLO Extra kW
Technical Documentation Technical Documentation
EOLO Extra 28-32 kW main components.
Legenda:
1 - Domestic water draining fitting
2 - Domestic water probe
3 - D.h.w. flow switch
4 - Gas valve
5 - System pressure switch
6 - Burner
7 - Combustion chamber
8 - Airtight chamber
9 - Fan
10 - Testing hole (air A) - (fumes F)
11 - Pressure point with positive signal
12 - Pressure point with negative signal
13 - Flue pressure switch
14 - Delivery probe
15 - Safety thermostat
16 - Draught diverter
17 - Primary exchanger
18 - Ignition and detection electrodes
19 - System expansion vessel
20 - Automatic air vent
21 - Boiler circulator
22 - D.h.w. exchanger
23 - 3-way valve (motorised)
24 - Automatic by-pass
25 - 3-bar safety valve
26 - System draining cock
27 - Boiler pressure gauge
28 - System filling valve
6
STEEkW ed 01/06 EOLO Extra kW
Technical DocumentationTechnical Documentation
EOLO Extra kW hydraulic diagram.
Legend:
1 - D.h.w. flow switch
2 - Flow limiter
3 - System filling valve
4 - Domestic water probe
5 - Gas valve
6 - Burner
7 - Primary exchanger
8 - Draught diverter
9 - Fan
10 - Airtight chamber
11 - Flue pressure switch
12 - Delivery probe
13 - Safety thermostat
14 - System expansion vessel
15 - Automatic air vent
16 - Boiler circulator
17 - System pressure switch
18 - D.h.w. exchanger
19 - 3-way valve
20 - Automatic by-pass
21 - System draining cock
22 - 3-bar safety valve
G - Gas supply
AC - D.h.w. outlet
AF - D.h.w. (cold) inlet
R - System return
M - System delivery
Hot water for central heating and domestic use is produced
by a primary and secondary (d.h.w.) circuit that are engaged
according to requirements.
7
STEEkW ed 01/06 EOLO Extra kW
Technical Documentation Technical Documentation
Primary circuit (boiler circuit).
e primary circuit with relevant control and safety devices
is triggered each time there is a request for central heating
or domestic hot water.
Operation.
e heat contained in the flue produced by combustion is ab-
sorbed by the copper blades of the primary water-gas exchanger
(7) which, in turn, transfers it to the water circulating inside
it by means of the boiler pump (16).
e water is transferred directly into the system or else can
be diverted inside the stainless steel instantaneous plate ex-
changer (18).
is depends on the position of the motorised 3-way valve
(19) which, when idle, lets the water flow through the d.h.w.
exchanger (18); on the other hand, when responding to a heat-
ing request, the flow is diverted to the system delivery (M) and
return (R) pipes.
Flow-head graph.
e trend of the curve that represents the system’s flow-head
ratio depends on how fast the pump is working and on how
the system by-pass is adjusted. Depending on the position, it
provides the system with a higher or a smaller head. e cha-
racteristic curves are shown in the following graphs.
D
Flow-rate l/h
A
Head (m H2O)
EOLO Extra 24 kW
Head (kPa)
Flow-rate l/h
Head (m H2O)
EOLO Extra 28 kW
B
C
A
B
C
D
Head (kPa)
A = Head available to the system on maximum speed with the by-pass off.
B = Head available to the system on maximum speed with the by-pass on.
C = Head available to the system at second speed with the by-pass off.
D = Head available to the system at second speed with the by-pass on.
8
STEEkW ed 01/06 EOLO Extra kW
Technical DocumentationTechnical Documentation
Boiler circulator (1).
It works on the primary circuit return, located immediately
after the 3-way diverter valve to which it is connected.
It is part of the integrated multi-function unit made in a
compound material.
A space on the body houses the automatic air vent (2).
Primary exchanger (1).
It is a water-gas lamellar exchanger with copper pipes and
fins (N° 75 fins 24 kW version) (N° 98 fins 28 and 32 kW
version). e central heating delivery NTC probe (2) and the
overheating safety thermostat (3) are located on the exchanger’s
outlet (delivery).
e four pipes it is made of are connected in series (4).
It is connected to the pump delivery and primary circuit deli-
very by means of pipes with threaded fittings.
1
34
2
Delivery
Return
1
2
EOLO Extra 32 kW
Flow-rate l/h
A
B
C
D
A = Head available to the system on maximum speed with the by-pass off.
B = Head available to the system on maximum speed with the by-pass on.
C = Head available to the system at second speed with the by-pass off.
D = Head available to the system at second speed with the by-pass on.
Head (m H2O)
Head (kPa)
Este manual sirve para los siguientes modelos
2
Otros manuales de Caldera de Immergas
Immergas
Immergas ZENITAIR MONO Manual de usuario
Immergas
Immergas EOLO Maior Manual de usuario
Immergas
Immergas UB INOX SOLAR 200 V2 Instrucciones de funcionamiento
Immergas
Immergas Maior Eolo 24 4E Manual del producto
Immergas
Immergas ZEUS 24 Superior Manual de usuario
Immergas
Immergas NIKE Mini Export Manual de usuario
Immergas
Immergas ZEUS Maior Manual de usuario
Immergas
Immergas VICTRIX PRO 35 2ErP Manual del producto
Immergas
Immergas ARES PRO 150 Instrucciones de funcionamiento
Immergas
Immergas NIKE MYTHOS 24 2 E Manual del producto
Immergas
Immergas Mini Eolo 24 3 E Manual del producto
Immergas
Immergas ARES 150 TEC ERP Manual de usuario
Immergas
Immergas EOLO STAR 24 3 E Manual del producto
Immergas
Immergas VICTRIX 50 Manual de usuario
Immergas
Immergas MINI NIKE X 24 3 E Manual de usuario
Immergas
Immergas NIKE Mini 24 Export Manual de usuario
Immergas
Immergas VICTRIX 24 TT 1E Manual del producto
Immergas
Immergas VICTRIX ZEUS 20 Manual de usuario
Immergas
Immergas MINI EOLO 24 3E Manual del producto
Immergas
Immergas VICTRIX Superior 32 kW X Manual de usuario
