Page 1
Micro
processor
Compact wall
hung boiler
Brass
Hydraulic set
Page 2
A compact boiler
of “quality”
Natural Draught Forced draught
The Range
Pocket 24 N
Natural draught
Open chamber
Combined
Instantaneous
Available power 24,7 kW
Electronic ignition
Nat gas Art n°: ECOPK001P2
LPG Art n°: ECOPK051P2
Pocket 24 F
Forced draught
Sealed chamber
Combined
Instantaneous
Available power 25,3 Kw
Electronic ignition
Nat gas Art n°: ECOPK101P2
LPG Art n°:: ECOPK151P2
Pocket 28 F
Forced draught
Sealed chamber
Combined
Instantaneous
Av.power25,3 kw
Electronic ignition
Nat gas Art n° : ECOPK201P2
LPG Art n°: ECOPK251P2
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Pocket boiler is the new compact instantaneous wall-hung boiler for internals. It has been designed and developed in order
to meet the market expectations for a smaller boiler where available space is limited.
Pocket with its 29,3 KW available (version 28 F over 25.000 Kcal/h) is one of the smallest and most energy efcient boilers
in its market sector. The high technological performances are strengthen by the compactness and the reduced dimensions
720 x 400 x 300 mm.
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A compact and
a complete hydraulic set
The hydraulics The combustion
The hydraulic set is made with brass mono-fusions
integrated with reduced ow loading tap and
standard by-pass.
The water – water exchanger with 12 plates allows a
production of great quantity of sanitary water under
a controlled temperature and a high resistance to
the deposits of limestone.
A sole electrode of ignition – detecting placed on the
13 ramps burner and 10 seconds of post ignition (on
the foreced draught version) ensure the maximum
efciency of starting mode.
The combustion performance is over 92% CE
Certication.
Efciency marking (92/42/CE)
A sole electrode of ignition – detecting placed on the
13 ramps burner and 10 seconds of post ignition (on
the foreced draught version) ensure the maximum
efciency of starting mode.
The combustion performance is over 92% CE
Certication.
Efciency marking (92/42/CE)
Page 5
The electronics with microprocessor
and self – diagnosis
A sole electronic board adjusts and controls all the
boiler functions.
The continuous modulation of the ame both on
heating and sanitary mode, helped by an electronic
starting for all models, ensures a great comfort of
utilisation and reduced consumptions to the end
users. The absence of pilot ame enables a save of
about 1 m3 of gas per a day. The function of self
– diagnosis, by means of the ashing of luminous
signals, detects with immediacy and accuracy
possible technical faults.
The plastics
Control panel in Ip 44, approved by CE normative.
The use of high density composite material (Magis G
101) in self – extinguish prevents the phenomenon of
yellowing (a typical degeneration of ABS material).
The electric panel is put among the sheeted walls
and that allows a strong resistance to the accidental
crashes (inclusive transports).
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Hydraulic connections:
discharges
and dimensions
720
10
53,5 8665,5 8057,5 57,5
400
190 190
GM CF R
10
25
717
Forzata Naturale
148 152
300
182 118
300
G gas inlet ¾”
C warm water outlet ½”
F cold water inlet ½”
M heating ow ¾”
R Heating return ¾ “
200 200
148 152
182 118
200 200
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A brave choice: the product made in Italy
The aware
choice
STEP has an objective:design and build reliable products with an
high energetic efficiency for a real reduction of consumptions and
of the ambient impact.
STEP is the only producer with productive plants located only
in Italy, regularly visited by its installers / customers for training
and updating sessions.
STEP has chosen to do not invest in advertising to employ all
the resources in the quality of its boilers, distinguishing itself by
an industrial context where the quality degeneration of the semidurable products (washing machines, dishwashers, refrigerators,
boilers, air-conditioners etc) is a generalized phenomena.
Thanks to such technical choices STEP can state to be the sole
European producer to have ever proposed to the market only:
• boilers with electronic ignition, without pilot flame that
implies an useless consumption of about 1 mc of gas per day;
• traditional boilers with double exchanger, one for heating
made of copper and one for sanitary made of stainless steel,
instead of a sole exchanger with bithermic function that as it is
well known imply a quick deposit of limestone;
• boilers with hydraulic set of brass instead of hydraulic set
made of plastic
A philosophy against the stream: high-quality components
Nowadays we can state that the products of STEP have reached
remarkable technological primates with boilers with digital
control, refined design and with high reliability thanks to the
valuable materials like copper, brass, stainless steel and aluminium,
avoiding the use of plastics for the functional parts of
the product or the use of first price components made in
countries where the is low labour cost.
STEP keeps the long term relationship with the customer
using first quality level components.
A part of the components, like the brass hydraulic set, is produced
internally, while for the universal components like pump,
exchanger, gas valve, are used standard versions of high quality
which can be found on the market easily, this in favour of the end
users.
Customer protection: technical options and transparency
STEP, leader Italian producer of wall hung gas boilers and complex
systems with more energy sources, considers the transparency
toward its customers basic principle of its philosophy.
the choice to use standard components is aimed to adopt only
parts of mass production, largely tested on the market and as a
consequence very reliable: the maxium quality at the best price.
This choice protects the customer who looks for the spare
parts at the best possible prices, without binding him to
expensive and not standard spare parts that cannot be
find on the market; this practice is widely adopted by a lot of
competitors especially by German producers. STEP following the
policy of the transparency has published the prices of the spare
parts on its web-site.
STEP designer and producer of boilers.
STEP recommends to its customers to be very careful in the
choice of the product: the philosophy of the most known foreign
corporations is boasting “German technology” launching on
the market products of poor quality, designed and produced in
countries with low labour costs with the only goal to get the
maximum profit in the short term.
STEP has never produced boilers of first price in the low
quality segment of the market but has always adopted the
best technologies of combustion available on the market
producing in their own factories.
Page 8
Technical Details
Model
Normal thermal power
Normal thermal power
Nominal power
Nominal power
Useful efficiency
Minimum thermal power
Minimum power
Efficiency to reduced load
Gas capacity at P methane G20 (2E+)
Methane G25 (2ELL)
GPL G30 (3+)
GPL G31 (3P)
GAS CAPACITY of methane network G20(2E+)
Methane G25 (2ELL)
GPL G30 (3+)
GPL G31 (3P)
Smoke temperature
CO2 (G20)
Warmth loss with burner working
Warmth loss with burner out
Heat loss to the shell (∆T = 50°C)
Steam capacity
HEATING
Minimum heating set point
Maximum heating set point
Water quantity in the boiler
Water quantity in the expansion tank
Pressure of the expansion tank
Minimum pressure in the primary circuit
Max. pressure in the primary circuit
Max. water quantity in the installation
SANITARY
Minimum sanitary set point
Maximum sanitary set point
Continuous hot water production
∆T = 25°C
Continuous hot water production
∆T = 35°C
Water volume ∆T = 30°C during 10”
Minimum sanitary load
Maximum sanitary pressure
Minimum sanitary pressure
Water volume in the expansion tank
Feed tension
Electric power
CONNECTIONS
Heating connection
Sanitary connection
Gas connection
Height
Depth
Width
WASTE PIPE LENGTH
Co – axial Ø 60 x 100 mm
Twin flue Ø 80 mm
Twin flue Ø 60 mm
Weight
Protection level
CE homologation
ARCA srl declina ogni responsabilità per le possibili inesattezze contenute, se dovute ad errori di trascrizione o di
stampa. Si riserva altresì il diritto di apportare ai propri prodotti quelle modiche che si riterranno necessarie o utili,
senza pregiudicarne le caratteristiche essenziali.
Unità
KW 27 27 31,5
Kcal/h 23.220 23.220 27.090
KW 24,7 25,3 29,3
Kcal/h 21.200 21.734 25.194
% 91,3 93,6 93
KW 10,5 10,5 12,4
KW 9,4 9,6 11,3
% 89,5 91,8 91,2
m
m
Kg/h 2,128 2,128 2,482
Kg/h 2,096 2,096 2,445
mbar 20 20 20
mbar 20 20 20
mbar 29 29 29
mbar 37 37 37
°C 115,3 126,7 131,4
% 6 7,7 7,6
% 6,8 6,1 6,5
% 0,2 0,2 0,1
% 1,9 0,3 0,5
Nm
°C 35 35 35
°C 90 90 90
l 1,2 1,2 1,2
l 7 7 7
bar 0,7 0,7 0,7
bar 0,4 0,4 0,4
bar 3 3 3
l 150 150 150
mbar 230 230 330
°C 30 30 30
°C 60 60 60
l/min 14,1 14,5 16,8
l/min 10,1 10,3 12,0
l 117,8 120,7 140
l/min 2,5 2,5 2,5
bar 8 8 8
bar 0,5 0,5 0,5
l - - -
V/Hz 230/50 230/50 230/50
W 90 120 120
Inch 3/4” 3/4” 3/4”
Inch 1/2” 1/2” 1/2”
Inch 3/4” 3/4” 3/4”
mm 720 720 720
mm 300 300 300
mm 400 400 400
m min. 0,5 mt. - -
m - 3 4
m - 16 30
m - - -
Kg 35 39 43
IP 44 44 44
Pocket 24 N
B11Bs
3
/h 2,855 2,855 3,331
3
/h 3,320 3,320 3,874
3
/h 58,7 47 55,5
0068
Pocket 24 F
C12 - C32 - C42 - C52
0068 0068
Pocket 28 F
C12 - C32 - C42 - C52
ARCA srl
Via 1° Maggio, 16 - 46030
S. Giorgio (MN)
Tel. 0376/273511 r.a.
Fax 0376/374646
P. IVA 0158867 020 6
e-mail: [email protected]
www.arcacaldaie.com
Cat. Pocket EN Rev. 0 Settembre 2012
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