Sime DEWY Series User manual

INSTALLER INSTRUCTIONS
CONTENTS
1 DESCRIPTION OF THE BOILER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . pag. 94
2 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . pag. 98
3 CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . pag. 108
4 USE AND MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . pag. 111
IMPORTANT
When carrying out commissioning of the boiler, you are highly recommended to perform the following checks:
Make sure that there are no liquids or inflammable materials in the immediate vicinity of the boiler.
Make sure that the electrical connections have been made correctly and that the earth wire is connected to a
good earthing system.
Open the gas tap and check the soundness of the connections, including that of the burner.
Make sure that the boiler is set for operation for the type of gas supplied.
Check that the flue pipe for the outlet of the products of the combustion is unobstructed and has been properly
installed.
Make sure that any shutoff valves are open.
Make sure that the system is charged with water and is thoroughly vented.
Check that the circulating pump is not locked (CAUTION: Remember to release the pump coupled with the control
panel, if necessary, to protect the electronic control card).
Purge the system, bleeding off the air present in the gas pipe by operating the pressure relief valve on the gas
valve inlet.
Check that the syphened drip is fully filled with water. If necessary, fill it via the special opening.
FONDERIE SIME S.p.A. of Via Garbo 27 - Legnago (VR) - Italy declares that its hot water boilers, which bear the CE
mark under Gas Directive 90/396/CEE and are fitted with a safety thermostat calibrated to a maximum of 110°C,
are not s bject to application of PED Directive 97/23/CEE as they meet the requirements of article 1 paragraph
3.6 of the Directive.
DEWY - ENGLISH

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1.1 INTRODUCTION
“DEWY” boilers are premix condensation
thermal appliances which use microproces-
sor technology for function control and
management. They comply with the euro-
pean directives 90/396/CEE,
89/336/CEE, 73/23/CEE, 92/42/CEE
and with the european specifications EN
483 - EN 625.
These appliances can be fired by natural
gas (methane) and propane gas (G31).
The instructions given in this manual are
provided to ensure proper installation and
perfect operation of the appliance.
1 DESCRIPTION OF THE BOILER
1.2 DIMENSIONS
1.2.1 “30/80” model
330
G
240
310
M
R
55
S2
C
U
S1
E
70
490
390
130
S3
230
230
74 5
Ø 60/100
230
65
1290
460
215
Fig. 1
CONNECTIONS
R C.H. return 3/4” (UNI-ISO 228/1)
M C.H. flow 3/4” (UNI-ISO 228/1)
G Gas connection 3/4” (UNI-ISO 228/1)
E D.H.W. inlet 3/4” (UNI-ISO 228/1)
U D.H.W. outlet 3/4” (UNI-ISO 228/1)
C Recirculation 3/4” (UNI-ISO 228/1)
S1 C.H. safety relief valve
S2 Tank unit safety relief valve
S3 Condensation outlet ø 25
600
65
1620
610
315
252
76
M2
R2
M1
R1
M
RS1
C1
S3
G
S2
117 62
U
C
E
109
349
712
946
70
110 9
1229 70
1349 140
300 300
828
846
1.2.2 “30/130” model
CONNECTIONS
R Zone 1 system return 3/4” (UNI-ISO 228/1)
R1 Zone 2 system return (optional) 3/4” (UNI-ISO 228/1)
R2 Zone 3 system return / Low
temperature return (optional) 3/4” (UNI-ISO 228/1)
M2 Zone 3 system delivery / Low
temperature delivery (optional) 3/4” (UNI-ISO 228/1)
M1 Zone 2 system delivery (optional) 3/4” (UNI-ISO 228/1)
M Zone 1 system delivery 3/4” (UNI-ISO 228/1)
G Gas connection 3/4” (UNI-ISO 228/1)
E D.H.W. inlet 3/4” (UNI-ISO 228/1)
U D.H.W. outlet 3/4” (UNI-ISO 228/1)
C Recirculation 3/4” (UNI-ISO 228/1)
C1 Recirculation pump kit (optional) 1/2” (UNI-ISO 228/1)
S1/S2 C.H. safety relief valve/tank
S3 Condensation outlet ø 25 Fig. 1/a

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1.3 TECHNICAL FEATURES
DEWY 30/80 DEWY 30/130
Heat o tp t
Nominal (80-60°C) kW (kcal/h) 29,3 (25.200) 29,3 (25.200)
Minimum (80-60°C) kW (kcal/h) 10,4 (9.000) 10,4 (9.000)
Nominal (50-30°C) kW (kcal/h) 32,0 (27.600) 32,0 (27.600)
Minimum (50-30°C) kW (kcal/h) 11,4 (9.800) 11,4 (9.800)
Nominal D.H.W. heat o tp t kW 29,3 29,3
Heat inp t
Nominal/Minimum kW 30,0 / 10,8 30,0 / 10,8
Efficiency (80-60°C)
Nominal/Minimum output % 97,7 / 96,7 97,7 / 96,7
Efficiency (50-30°C)
Nominal/Minimum output % 106,8 / 105,8 106,8 / 105,8
Water content l 9,5 10,9
Adsorbed power cons mption W175 175
Electrical protection grade IP X4D IP X4D
Maxim m water head bar 3 3
Maxim m temperat re °C 85 85
Expansion vessel
Capacity l 8 10
Preloading pressure bar 1 1
C.H. setting range °C 20 - 80 20 - 80
D.H.W. setting range °C 10 - 60 10 - 60
D.H.W. prod ction
D.H.W. flow rate (EN 625) l/min 19,9 21,0
Continuous D.H.W. flow rate ∆t 30°C l/min 14 14
Maximum D.H.W. pressure bar 7 7
D.H.W. tank capacity l 80 130
D.H.W. expansion vessel l 4 4
Recuperation time between 25 and 55°C min 9’ 9’40”
Smokes temperat re
Maximum/ Minimum (80-60°C) °C 70 / 69 70 / 69
Maximum/ Minimum (50-30°C) °C 48 / 45 48 / 45
Smokes flow kg/h 49 49
Category II2H3P II2H3P
Type B23, C13-33-43-53 B23, C13-33-43-53
Weight kg 127 191
Main b rner nozzles
Quantity n° 1 1
G20 ø mm 6,0 6,0
G25 ø mm 7,7 7,7
G31 ø mm 4,3 4,3
Gas cons mption
Nominal / Minimum (G20) m3st/h 3,17 / 1,14 3,17 / 1,14
Nominal / Minimum (G25) m3st/h 3,69 / 1,32 3,69 / 1,32
Nominal / Minimum (G31) kg/h 1,22 / 0,44 1,22 / 0,44
Gas s pply press re
G20 mbar 20 20
G25 mbar 25 25
G31 (Propan) mbar 37 37
CO2% methane (G20) min/max 9,2 / 9,3 9,2 / 9,3
CO2% methane (G25) min/max 9,5 / 9,6 9,5 / 9,6
CO2% propan (G31) min/max 10,1 / 10,3 10,1 / 10,3
CO emission ppm 27 27
NOx emission (Class 5) ppm 35 35
(1) Flow calculated with a fixed temperature on the hot-water service potentiometer of 60°C for a maximum period of 10 minutes

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1.4 FUNCTIONAL DIAGRAM
1.4.1 “30/80” model
Fig. 2
KEY
1Fan
2 Water-gas exchanger
3 Breather valve
4 Gas valve
7 C.H. sensor (SM)
8 100°C safety stat
9 Air relief valve
10 Circulation pump
11 Expansion vessel
12 Safety valve
13 Boiler discharge
14 Water pressure transducer
15 Flowmeter
16 Automatic by-pass
21 Gas cock
24 Limit stat
25 Condensation water trap
26 Gas rate adjuster
27 Motor-operated diverter valve
28 Storage tank 80 liter
29 Filling cock
30 D.H.W. discharge cock
31 Magnesium anode
32 D.H.W. expansion vessel
33 D.H.W. safety valve 7 bar
34 Aqua Guard Filter System
CONFIGURAZIONE
KIT BASSA TEMPERATURA
CONFIGURAZIONE
KIT POMPA 2/3 ZONA
1.4.2 “30/130” model
Fig. 2/a
KEY
1Fan
2 Water-gas exchanger
3 Breather valve
4 Gas valve
5 Gas rate adjuster
6 C.H. sensor (SM)
7 Flowmeter
8 Zone 1 system pump
9 Single-acting valve
10 Hot water tank pump
11 Expansion vessel
12 Boiler discharge
13 Air relief valve
14 Automatic by-pass
15 D.H.W. discharge cock
16 Tap water probe (SB)
17 Storage tank 130 liter
18 Magnesium anode
19 D.H.W. safety valve 7 bar
20 Filling cock
21 D.H.W. expansion vessel
22 Water pressure transducer
23 Safety valve
24 Condensation water trap
25 Limit stat 85°C
26 100°C safety stat
27 System delivery manifold
28 System return manifold
RECIRCULATION KIT CONFIGURATION (code 8102600)
29 Single-acting valve
30 Recirculation pump with programmer timer
31 Pressure relief valve
PUMP KIT 2/3 ZONE CONFIGURATION
(code 8100700/8100710)
32 Zone 2 and 3 system pump
33 Zone 2 and 3 single-acting valve
34 Zone 2 and 3 system bypass
LOW TEMPERATURE KIT CONFIGURATION
(code 8100760)
35 Mixer valve delivery pump
36 Unidirectional low temperature valve
37 Mixer valve
38 Low temperature delivery pump
39 Low temperature safety thermostat
40 Low temperature bypass
PUMP KIT 2/3 ZONE
CONFIGURATION
LOW TEMPERATURE KIT
CONFIGURATION

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1.5 MAIN COMPONENTS
1.5.1 “30/80” model
Fig. 3
KEY
1 Gas cock
2 Manual filling
3 Motor-operated diverter valve
4 Gas valve
5 Gas rate adjuster
6 Condensation water trap
7 Gas pressure take-off
8 Positive pressure take-off
9 Breather valve
11 Sensing electrode
12 Water-gas exchanger
13 Control panel
14 Fa n
15 Ignition transformer
16 Negative pressure take-off
17 Flowmeter
18 C.H. sensor (SM)
19 Automatic breather
20 100°C safety stat
21 Circulating pump
22 Water pressure transducer
23 Safety valve
24 Magnesium anode
25 Storage tank 80 liter
26 D.H.W. discharge cock
27 Smoke stat
28 Aqua Guard Filter System

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38
37
39
40
41
8
10
CONFIGURAZIONE
KIT BASSA TEMPERATURA
CONFIGURAZIONE
KIT POMPA 2/3 ZONA
35
36
34
33
8
10
19
20
21
22
24
23
25
26
27
28
29
30
31
18
32
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
42
1.5.2 “30/130” model
Fig. 3/a
The boiler must be installed in a fixed loca-
tion and only by specialized and qualified
firms in compliance with all instructions
contained in this manual. Furthermore, the
installation must be in accordance with cur-
rent standards and regulations.
2.1 BOILER ROOM
The “DEWY” version boilers can be instal-
led in any domestic environment without
any location restrictions or comburent air
requirements.
2.2 CONNECTING UP SYSTEM
To protect the heat system from damaging
corrosion, incrustation or deposits, after
installation it is extremely important to
clean the system using suitable products
such as, for example, Sentinel X300 or
X400. Complete instructions are provided
with the products but, for further informa-
tion, you may directly contact GE Betz.
For long-term protection agains corrosion
and deposits, the use of inhibitors such as
Sentinel X100 is recommended after clea-
ning the system. It is important to check
the concentration of the inhibitor after
each system modification and during main-
tenance following the manufacturer’s
instructions (specific tests are available at
your dealer). The safety valve drain must be
connected to a collection funnel to collect
any discharge during interventions.
WARNING: Fail re to clean the heat
system or add an adeq ate inhibitor inva-
lidates the device’s warranty.
Gas connections must be made in accor-
dance with current standards and regula-
tions. When dimensioning gas pipes from
the meter to the module, both capacity
volume (consumption) in m3/h and gas
density must be taken into account.
The sections of the piping making up the
system must be such as to guarantee a
supply of gas sufficient to cover the maxi-
mum demand, limiting pressure loss
between the gas meter and any apparatus
being used to not greater than:
1.0 mbar for family II gases (natural gas);
2.0 mbar for family III gases (butane or
propane).
A sticker inside the module includes identifi-
cation and gas type data specific to the
module.
2.2.1 Connection of condensation
water trap
The drip board and its water trap must be
2 INSTALLATION
LEGEND
1 130 litre hot water tank
2 Hot water tank drain cock
3 Hot water tank expansion tank
4 Manual filling unit
5 Hot water tank safety valve
6 Automatic bleed
7 Gas valve
8 Zone 1 heating system pump
9 Gas flow control
10 Zone 1 single-acting valve
11 Condensation drain trap
12 Manual pressure relief valve
13 Positive pressure intake
14 Negative pressure intake
15 Ignition transformer
16 Measurement electrode
17 Primary exchanger
18 Ignition electrode
19 Control panel
20 Ventilator
21 Heating probe (SM)
22 100°C safety thermometer
23 Heating system safety valve
24 Water pressure transducer
25 Single-acting valve
26 Manual recirculation kit bleed (optional)
27 Hot water tank pump
28 Flow switch
29 Tap water recirculation pump with timer
(optional)
30 Single-acting valve (optional)
31 Manual pressure relief valve
32 Boiler drain cock
33 Zone 2 heat pump (optional)
34 Zone 2 single-acting valve (optional)
35 Zone 3 single-acting valve (optional)
36 Zone 3 heat pump (optional)
37 Low temperature safety thermostat
(optional)
38 Low temperature delivery pump (optional)
39 Mixer valve (optional)
40 Low temperature single-acting valve
(optional)
41 Mixer valve delivery pump (optional)
42 Smoke stat
PUMP KIT 2/3 ZONE
CONFIGURATION
LOW TEMPERATURE KIT CONFIGURATION

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connected to a civil drain through a pipe
with a slope of at least 5 mm per metre to
ensure drainage of condensation water.
The plastic pipes normally sed for civil
drains are the only type of pipe which is
appropriate for conveying condensation
to the b ilding’s sewer pipes.
2.2.2 Filter on the gas pipe
The gas valve is supplied ex factory with an
inlet filter, which, however, is not adequate to
entrap all the impurities in the gas or in gas
main pipes.
To prevent malfunctioning of the valve, or in
certain cases even to cut out the safety devi-
ce with which the valve is equipped, install an
adequate filter on the gas pipe.
2.4 SYSTEM FILLING
Filling of the boiler and the system is done
by the charge cock (2 fig. 3 - 4 fig. 3/a).
The charge pressure, with the system
cold, must be 1 bar.
Filling must be done slowly so as to allow
any air bubbles to be bled off through the
air valves.
Once the filling has been completed, close
the filling tap.
2.5 COAXIAL DUCT ø 60/100
The air inlet-smoke outlet assembly, code
8096250, is included in the standard sup-
ply of the appliance complete with mounting
instructions.
2.5.1 Coaxial d ct
accessories
The accessories to be used for this type of
installation and some of the connecting
systems that may be adopted are illustred
in fig. 4.
With the pipe bend incl ded in the kit, the
maxim m length of the piping sho ld not
exceed 2.8 meter.
When the vertical extension code
8086950 is used, the terminal part of the
pipe must always come out horizontally.
2.5.2 Positioning the
o tlet terminals
The outlet terminals for forced-draught
appliances may be located in the external
perimeter walls of the building.
To provide some indications of possible solu-
tions, Table 1 gives the minimum distances
to be observed, with reference to the type
of building shown in fig. 5.
Fig. 5
TABLE 1
Siting of terminal Appliances from 7 to 35 kW
(distances in mm)
A - below openable window 600
B - below ventilation opening 600
C - below eaves 300
D - below balcony (1) 300
E - from adjacent window 400
F - from adjacent ventilation opening 600
G - from horizontal or vertical soil or drain pipes (2) 300
H - from corner of building 300
I - from recess in building 300
L - from ground level or other treadable surface 2500
M - between two terminals set vertically 1500
N - between two terminals set horizontally 1000
O - from a surface facing without openings or terminals 2000
P - as above but with openings and terminals 3000
1) Terminals below a practicable balcony must be located in such a way that the total path of the smoke
from its outlet point from the terminal to its outlet point from the external perimeter of the balcony, inclu-
ding the height of possible railings, is not less than 2000 mm.
2) When siting terminals, where materials that may be subject to the action of the combustion products
are present in the vicinity, e.g., eaves, gutters and downspouts painted or made of plastic material,
projecting timberwork, etc., distances of not less than 1500 mm must be adopted, unless adequate
shielding is provided to guard these materials.
IMPORTANT:
Each additional 90° c rve installed red ces
the available length by 0.90 metres.
Each additional 45° c rve installed red ces
the available length by 0.45 metres.
Fig. 4
KEY
1a-b Coaxial duct kit code 8096250
2a Extension L. 1000 code 8096150
2b Extension L. 500 code 8096151
3 Vertical extension L. 140 with take-off point code 8086950
4a 90° additional bend code 8095850
4b 45° additional bend code 8095950
NOTE
Before connecting
accessories, it is
always advisable to
l bricate the internal
part of the gaskets
with silicon prod cts.
Avoid sing oils and
greases.

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2.5.3 Coaxial d ct o tlet on the roof
The accessories to be used for this type of
installation and some of the connecting
systems that may be adopted are illustra-
ted in fig. 7.
It is possible to insert p to a maxim m of
three extensions and reach a maxim m
rectilinear distance of 3.7 meter.
Sho ld it be necessary to make two chan-
ges of direction in the pipe development,
the maxim m length of the pipe m st not
exceed 2 meter.
2.6 SEPARATE PIPES ø 80
A special kit may be used to separate the
flue gas outlet from the fresh air intake.
The intake may be installed to the right or
left of the flue gas outlet.
Both ducts may be oriented in any direction.
Refer to fig. 8 for positioning.
The maxim m overall length of the intake
and exha st d cts depends on the head
losses of the single fittings installed
(excl ding the do blers) and m st not be
greater than 15,5 mm H2O.
For head losses in the fittings, refer to
Table 2.
2.6.1 Separate pipe accessories
Kit code 8089911 is supplied for this pur-
pose (fig. 9).
The sectored diaphragm is to be used
according to the maximum head loss
allowed in both pipes, as given in fig. 10.
KEY
1 Blind flange
2 Flue gas duct flange
3 Fixing screw
4 Gasket ø 125/95
5 Intake duct collar
Fig. 9
100
Fig. 7
15 5
Ø 80
Ø 80
105
P
L
CA
K
Z
CS
KEY
CA Inlet
CS Outlet
Example of allowable installation calculation in that the sum of the head losses of the
single fittings is less than 15,5 mm H2O:
Inlet O tlet
7 m horizontal pipe ø 80 x 0,20 1,40
7 m horizontal pipe ø 80 x 0,40 2,80
n° 2 90° elbows ø 80 x 0,30 0,60
n° 2 90° elbows ø 80 x 0,50 1,00
n° 1 terminal ø 80 0,10 0,40
Total head loss 2,10 + 4,20 = 6,3 mm H2O
TABLE 2
Accessories ø 80 Total head loss (mm H2O)
DEWY
Inlet Outlet Roof outlet
90° elbow MF 0,30 0,50
45° elbow MF 0,20 0,40
Extension L. 1000 (horizontal) 0,20 0,40
Extension L. 1000 (vertical)) 0,30 0,30
Outlet terminal 0,40
Inlet terminal 0,10
Doubler fitting 0,30
Roof outlet terminal L.1381 0,60
Fig. 8
1
2
3
45 3
30/80 30/130
Kmm 215 348
L mm 130 263
P mm 245 230
Z mm 330 315
KEY
1 Vertical extension L. 140 with take-off points code 8086950
2a Extension L. 1000 code 8096150
2b Extension L. 500 code 8096151
3 Tile with articulation joint code 8091300
4 Roof outlet terminal L. 1285 code 8091205
5 Supplementary 90° elbow code 8095850
6 Supplementary 45° elbow code 8095950
NOTE
Before connecting accessories, it is
always advisable to l bricate the
internal part of the gaskets with
silicon prod cts. Avoid sing oils
and greases.

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2.6.2 Connection with existing fl es
The ø 80 flue gas pipe may be connected to
an existing flue. When the “DEWY” boiler is
running at a low temperature, a regular flue
may be used under the following conditions:
No other boiler must be using the flue.
The flue interior must be shielded
from direct contact with condensation
from the boiler.
The products of combustion must be
conveyed through a flexible or rigid pla-
stic pipe around 100 to 150 mm in dia-
meter, and condensation must be sipho-
ned off at the foot of the pipe.
The usable height of the water trap must
be at least 150 mm.
2.6.3 Separate-pipes roof o tlet
The accessories to be used for this type of
installation and some of the connecting
systems that may be adopted are illustra-
ted in fig. 12.
There is the possibility of doubling the air-
intake and smoke-outlet pipes and then brin-
ging them back together again so as to
obtain a concentric discharge by using the
doubler fitting (9 fig. 12).
In these cases, when assembling, recover
the silicone gasket used on the terminal
adapter (5 fig. 11), which is to be replaced
by the doubler, and insert it into the seat
made in the doubler.
For this type of discharge the s m of the
maxim m rectilinear development
allowed for the pipes m st not exceed
15,5 mm H2O.
When calculating the lengths of pipe, take
into account the parameters given in the
Table 2.
Fig. 10
KEY
1 Separate pipes kit code 8089911
2 90° elbow MF code 8077450 (6 pz.)
3 90° elbow MF with take-off points code 8077452
4a Extension L. 1000 code 8077351 (6 pz.)
4b Extension L. 500 code 8077350 (6 pz.)
5 Outlet terminal code 8089501
6 Int.-est. ring kit code 8091500
7 Inlet terminal code 8089500
8 45° elbow MF code 8077451 (6 pz.)
NOTE
Before connecting accessories, it is always
advisable to l bricate the internal part of the
gaskets with silicon prod cts. Avoid sing oils
and greases.

2.8 ELECTRICAL CONNECTION
The boiler is supplied with an electric cable.
Should this require replacement, it must be
purchased exclusively from SIME. The elec-
tric power supply to the boiler must be
230V - 50Hz single-phase through a fused
main switch, with at least 3 mm spacing
between contacts. Respect the L and N
polarities and the earth connection.
NOTE: Device m st be connected to an
efficient earthing system. SIME declines
all responsibility for inj ry or damage to
persons, animals or things, res lting from
the fail re to provide for proper earthing
of the appliance. Always t rn off the
power s pply before doing any work on
the electrical panel.
2.8.1 Room stat connection
(fig. 13 pos. A)
To gain access to the electronic board con-
nector (3), remove the control panel cover
and connect the room stat to the terminals
TA (5-6) after having removed the jumper.
The thermostat or timer-thermostat,
recommended for better room temperatu-
re control, must be class II as specified by
standard EN 60730.1 (clean contact).
WARNING: Applying mains voltage to the
terminals of conector (3) will irreparably
damage the control board. Make s re
that any connections to be made are not
carrying mains voltage.
2.8.2 “Logica Remote Control”
connection (fig. 13 pos. B)
The electrical plant must comply with local
standards and all cables must comply with
low safety voltage requirements of EN
60730. For lengths up to 25 m, use cables
of section 0.25 mm2, for longer lengths up
to 50 m use cables of section 0.5 mm2.
First of all, assemble and wire the socket
(2), then insert the equipment which will
start-up as soon as it receives current.
To gain access to connector (3) remove the
control panel cover and connect the climate
regulator to terminals CR (6-7).
WARNING: External voltage m st not be
connected to terminals 1-2-3-4 of the
"Logica Remote Control". A telephone remo-
te switch with a zero potential contact or a
window contact can be connected to termi-
nals 3-4. Eq ipment for the checking of civil
plants via a telephone line incl des the
model TEL 30.4 LANDIS & STAEFA.
2.8.3 External temperat re sensor
connection (fig. 13 pos. C)
The cables must comply with low safety vol-
tage requirements of EN 60730. For lengths
up to 25 m, use cables of section 0.25 mm2,
for longer lengths up to 50 m use cables of
section 0.5 mm2.
To gain access to boiler connector (3) remo-
ve the control panel cover and connect the
external temperature sensor to terminals
SE (8-9).
102
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Fig. 12
KEY
1 Separate pipes kit code 8089911
2 90° elbow MF code 8077450 (6 pz.)
3 90° elbow MF with take-off points code 8077452
4 a Extension L. 1000 code 8077351 (6 pz.)
4 b Extension L. 500 code 8077350 (6 pz.)
6 Int.-est. ring kit code 8091500
7 Inlet terminal code 8089500
9 Doubler fitting code 8091400
10 Tile with articulated joint code 8091300
11 Roof outlet terminal L. 1381 code 8091204
NOTE
Before connecting accessories, it is always
advisable to l bricate the internal part of the
gaskets with silicon prod cts. Avoid sing oils
and greases.

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103
TA
CR
CR SE
2
A
B
C
3
1
SB
SB
SB
KEY
1 Control panel
2 “Logica Remote Control” socket
3 Conector (J2)
TA Room stat
(not supplied)
CR Logica Remote Control
(optional)
SE External temperature sensor
(optional)
SB D.H.W. sensor
KEY
EV1 Gas valve coil
EV2 Gas valve coil
EA Ignition electrode
ER Sensing electrode
TS 100°C safety stat
VFan
TPA Water pressure transducer
VD Motor-operated diverter valve
PI Pump
SE External sensor (optional)
TA Room stat
SM C.H. sensor (blue)
TL Limit stat
TRA Ignition transformer
TR Transformer 230 - 24V
FL Flowmeter
SS D.H.W. sensor (red)
CR Logica Remote Control (optional)
SV Ventilator board
OP Time programmer
TF Smoke stat
Note: The room stat m st (TA) be con-
nected to the terminals 5-6
CONNECTOR SPARE PART CODES:
J2 code 6278613
J3 code 6278660
J4 code 6278659
J5 code 6278658
J7 code 6278636 Fig. 14
2.8.4 Wiring diagram “30/80” model
Fig. 13

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KEY
EV1 Gas valve coil
EV2 Gas valve coil
EA Ignition electrode
ER Sensing electrode
TS 100°C safety stat
VFan
TPA Water pressure transducer
PI Pump
SE External sensor (optional)
TA Room stat
SM C.H. sensor (blue)
TL Limit stat
TRA Ignition transformer
TR Transformer 230 - 24V
FL Flowmeter
SS D.H.W. sensor (red)
CR Logica Remote Control (optional)
SV Ventilator board
OP Time programmer
TF Smoke stat
PB Hot water tank pump
PR Recirculation pump (optional)
Note: The room stat m st (TA) be con-
nected to the terminals 5-6
CONNECTOR SPARE PART CODES:
J2 code 6278613
J3 code 6278660
J4 code 6278659
J5 code 6278658
J7 code 6278636 Fig. 14/a
2.8.5 Wiring diagram “30/130” model
Fig. 14/b
2.8.6 “30/130” wiring diagram with zone p mp kit (code 8100700) and third zone p mp kit (8100710)
LEGEND
C Zone control unit
R Relay
P1 Zone 1 system pump
P2 Zone 2 system pump
P3 Zone 3 system pump
TA1 Zone 1 room thermostat
TA2 Zone 2 room thermostat
TA3 Zone 3 room thermostat

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2.9 LOGICA REMOTE CONTROL
All the boiler's functions can be managed
by a optional digital multifunctional device
code 8092204 for the remote of the boi-
ler itself and for regulating room climatic
conditions with an operational reserve of
12 hours.
The heating circuit is controlled by the room
temperature sensor built-in the equipment
or by the atmospheric conditions, with or
without environmental inflow, if the boiler is
connected to an external sensor.
Characteristics:
Ergonomic control unit divided according
to function (control levels)).
Clear division of basic functions:
•operating regime, correction of set
value and presence button are directly
accessible;
•Different real current values are
accessible through the "info" button;
•other functions can be programmed
after the cover has been opened;
•special service level with protected
access;
Each setting or modification is displayed
and confirmed.
Tome setting (special line for changing
BST/CET).
Heating programme with max. 3 heating
periods per day, individually selectable.
Copy function for easy transfer of hea-
ting programme to the next or pre-
vious day.
Holiday programme: the programme is
interrupted for the holiday period and auto-
matically restarted on returning home.
Option to return the heating program to
default values.
Programming lock (child safety).
F nctions:
Delivery temperature control guided by
the atmospheric conditions, taking into
account the dynamics of the building.
Delivery temperature control guided by
atmospheric conditions with influence of
ambient temperature.
Ambient temperature control only.
Adjustable influence of ambient tempera-
ture shift .
Switch-on and switch-off optimisation.
Rapid lowering.
ECO functions (daily heating limiter, auto-
matic summer/winter switch-over).
Controllable maximum delivery tempera-
ture limit (specifically for floor plants).
Limitation of increase in pre-set delivery
temperature.
Anti-freeze protection for buildings.
Hourly programming of the tank unit
temperature on two levels: comfort and
reduced.
Domestic hot water control with nominal
value requirement and enable.
Connection to room sensor or switching
of operating regime through the telepho-
ne system with external contact or
through a window contact.
Anti-bacterial.
2.9.1 Installation
The unit must be installed in the main living
room. For installation, follow the assembly
instructions inserted in the package.
At this point, with the selector knob on ( ),
the installer can adjust the basic parame-
ters settings according to the individual
needs (point 2.8.2).
If there is a thermostatic radiator valve
fitted, this m st be set to maxim m.
2.9.2 Installation settings
The settings for the basic operating para-
meters for individual needs are reported in
the instruction leaflet supplied with the
"Logica Remote Control" and in the section
reserved for the user in this manual.
For further adjustments which can be car-
ried out by the installer, the "Logica Remote
Control" offers a level of service and para-
meterising which can only be accessed
through a special combination of buttons.
To activate this level of service or parame-
terising press buttons and least 5
seconds. This will activate the parameteri-
sing level. Then use the same arrow buttons
to select the individual input lines and adjust
the values with or .
Fig. 14/c
2.8.7 “30/130” wiring diagram with low temperat re kit code 8100760
LEGEND
C Zone control unit
R Relay
P1 Zone 1 system pump
P2-P3 Low temperature zone pump
TA1 Zone 1 room thermostat
TA2 Low temperature zone room thermostat
TAB Low temperature safety thermostat

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Maxim m limit of delivery
temperat re
Variation of the maxim m speed of the
delivery temperat re
Activation of adaptation
Optimisation of
switch-on time
Heating gradient
Presetting switch-off
time (00 = off)
The delivery temperature is limited to the maximum set value.
The increase per minute of the prescribed delivery temperature value sent
in °C is limited to the imposed value.
With the activation of the adaptation, the pre-set value transmitted to the
boiler regulator is adapted to the effective heat need.
The adaptation functions with both the atmospheric guide with ambient
influence and with pure ambient control.
If the "Logica Remote Control" is set as a remote control only, the adaptation
must be is deactivated.
If the switch-on time optimisation is active, the "Logica Remote Control" modi-
fies the heating gradient until it finds the optimum heating point
0 = off 1 = on
The "Logica Remote Control" selects the switch-on time such that the set
value has more or less been reached at the start of the usage time.
The more severe the night-time cooling, the earlier the heating time starts.
Example: Current ambient temperature 18.5°C
Nominal ambient temperature 20°C
Heating gradient 30 min/K
Presetting of switch-on time:
1.5 K x 30 min/K = 45 minutes
00 means that the switch-o time has not been pre-set (function disabled).
If the switch-off time optimisation is active (value > 0), the "Logica Remote
Control" modifies the pre-set time until it finds the optimum switch-off time..
55
56
57
58
59
60
Antifreeze protection
"Pre-set ambient
temperat re val e"
S mmer/Winter switch-over
temperat re
Type of control:
0 = with ambient infl ence
1 = witho t ambient infl ence
Infl ence of ambient temperat re
Heating takes place up to this pre-set value if the plant is activated in standby
(e.g. holidays).
In this way, the building antifreeze function is active, preventing an excessive
lowering of the ambient.
This parameter regulates the temperature of the automatic summer/win-
ter switch-over.
This parameter de-activates the ambient influence and as a result all the
optimisations and adaptations.
If a valid external temperature is not transmitted , the controller switches to
the pure ambient control guide variable.
If the ambient controller is used only as a remote control (placed in the refe-
rence room and without an external sensor connected), the value must be
set at 0 (zero).
If the change in ambient temperature from the pre-set value remains high
during the entire day, the influence must be increased. If the ambient tem-
perature is around the pre-set value (control oscillation), the influence must
be reduced.
Note: If the ambient temperat re infl ence constant is set at 0, the adap-
tation of the heating c rve is deactivated. In this case, parameter 57 will
have no effect at all.
54
HEATING CIRCUIT SETTINGS
52
53
51

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Final ser level 2
programming block
Inp t f nction terminal 3-4
This block (1) can be activated to display all the parameters without
modifying them. Pressing buttons or displays “OFF”.
WARNING:
The activation block can be deactivated temporarily by pressing buttons
and simultaneously; a confirmation sign appears on the display.
At this point press simultaneously the buttons and for at least 5
seconds.
To permanently remove the activation block, set parameter 63 on 0.
The freely programmable input (terminals 3-4) allows three different functions
to be activated. The parameter has the following significance:
1= If an external sensor is connected, the display will show the temperature
of the external sensor ( _ _ = no sensor connected, function disabled).
2= With an external contact, it is possible to switch-over to "reduced pre-
set value of the ambient temperature".
3= With an external contact, it is possible to switch-over to "reduced pre-
set value of the antifreeze ambient temperature" (short circuit 0 0 0 or
interruption _ _ _ ). The display shows the current status of the external
contact.
64
63
SERVICE VALUES
DOMESTIC HOT WATER SETTINGS
Red ced domestic hot
water pre-set val e
Domestic hot water load
The reduced pre-set value of the temperature of the domestic hot water allow
the required water temperature to be obtained outside the programmed
usage times (daily programme 8).
0= 24 hours/ day - Hot water is always available at the temperature set
with user parameter n°3.
1= standard - Hot water according to the daily heating programme.
In the comfort areas of heating the temperature of the boiler unit is regu-
lated to the value set with user parameter n° 3.
In the reduced areas of heating the temperature of the boiler unit is
regulated to the value set with parameter n° 61 of the service level.
2= service disconnected
3= second daily programme (8) - Every day of the week the temperature of
the hot water is set according to programme 8. In this case there is a
single programming for all the days of the week and three time zones are
available. In the time spans set the temperature of the boiler unit is regu-
lated according to that set in parameter n°3. In the remaining hours the
boiler unit is controlled to the temperature set with parameter n° 61 the
of service level.
62
61
Modo de acção do contacto externo
Infl xo das sondas
ambiente + externa
Anti-bacterial f nction
Se a entrada (bornes 3 e 4 do ropadé) está ligada a um contacto externo de
potencial zero (parâmetro 64 = 2 ou 3), pode ser determinado o modo de
acção do contacto (tele-interruptor do telefone ou contacto janela). O modo de
acção especifica o estado de contacto no qual a função desejada está activa.
Display: modo de acção fechado (curto-circuito) 0 0 0
modo de acção aberto (interrupção) _ _ _
Determina o coeficiente de mistura entre a sonda ambiente interna e exter-
na, quando o parâmetro 64 = 1.
0 % = activa só a sonda interna (0% externa - 100% interna)
50 % = valor médio da sonda externa + interna
100 % = activa só a sonda externa
Para a regulação ambiente e a visualização, é utilizada a mistura programa-
da. Se a sonda externa apresenta um curto-circuito ou uma interrupção
prossegue-se com a sonda interna.
This function allows the hot water to be brought to a high temperature once
a week in order to eliminate eventual pathogenic agents.
It is active every Monday for a maximum duration of 2.5 hours at a delivery
temperature of 65°C.
0 = not active 1 = active
65
66
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3.1 ELECTRONIC BOARD
The electronic boards are manufactured in
compliance with the EEC 73/23 low-voltage
directives.
They are supplied with 230V and, through a
built-in transformer, send a voltage of 24V
to the following components: gas valve,
safety stat, C.H. and D.H.W. sensor, external
temperature sensor (optional), modulator,
micro divertor valve, flow switch safety
valve, water pressure transducer, room
stat or “Logica Remote Control”.
An automatic and continuous modulation
system enables the boiler to adjust the heat
output to the various system requirements
or the User’s needs.
The electronic components are guaranteed
against a temperature range of 0 to
+60°C.
3.1.1 Fa lt finding
The indicator leds signalling irregular
and/or incorrect operation of the equip-
ment are indicated in fig. 16.
3.1.2 Devices
The electronic board is equipped with the
following devices:
“POT. RISC.” trimmer (10 fig. 17)
Sets the maximum heating power value.
To increase the value turn the trimmer
clockwise; to reduce the value turn the
trimmer anticlockwise.
“POT. ACC.” trimmer (6 fig. 17)
Trimmer to vary the pressure level upon
ignition (STEP), of the gas valve.
According to the type of gas for which
the boiler is equipped, the trimmer must
be regulated so as to obtain a pressure
of approx. 3 mbar at the burner for
methane gas and 7 mbar for propane
gas (G31).
To increase pressure, turn the trimmer
clockwise; to reduce pressure, turn the
trimmer counterclockwise.
The slow ignition pressure level can be
set during the first 3 seconds following
burner ignition.
After setting the press re level pon
ignition (STEP) according to the type of
gas, check that the press re for hea-
ting is still at the val e previo sly set.
“MET-GPL” connector (7 fig. 17)
With the connector switched-off, the
3 CHARACTERISTICS
2.9.3 Gradient of
the characteristic
heating c rve
The gradient of the characteristic heating
curve is imposed on the current value “15”
of Logica. Increasing the gradient as shown
in the drawing of fig. 15, the delivery tempe-
rature increases in correspondence to the
outside temperature.
2.10 EXTERNAL TEMPERATURE
SENSOR
The "Logica Remote Control" can be con-
nected to an external temperature sensor
available a an optional extra (code
8094100).
This configuration ensures and maintains
the required temperature constant in the
room.
The ambient temperature is, in fact, indic-
ted and evaluated as the calculated mean
of the value measured inside and outside
the dwelling.
For installation, follow the assembly instruc-
tions inserted in the package.
Fig. 15
Example: Choosing a gradient of 15 with an outside temperature
of 10°C we shall have a delivery temperature of 60°C.

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boiler is set-up for NATURAL GAS; with
the connector switched-on, the boiler is
ready for LPG.
“ANN. RIT.” connector (5 fig. 17)
In the heating phase, the electronic board
is programmed to include a burner tech-
nical delay interval of approx. 90 seconds,
which occurs both at system cold star-
ting and at subsequent re-ignitions. The
aim is to overcome the problem of repea-
ted ignitions and turning off with very
short time intervals between. This could
occur in particular in systems presenting
high head losses.
At each restart after the period of slow
ignition, the boiler will set itself for about
1 minute at the minimum modulation
pressure, and will then move to the hea-
ting pressure value set.
When the connecting link is inserted,
both the programmed technical pause
and the period of operation at minimum
pressure in the startup phase will be can-
celled. In this case, the times elapsing
between turning off and subsequent re-
ignition will depend on a temperature dif-
ference of 5°C detected by the SM sen-
sor (heating flow sensor).
DIP SWITCH (13 fig. 17)
Check that the cordless plugs are inser-
ted in the position indicated:
Flashing red led,
communication fault
with “Logica Remote Control”
Green led off if
power is cut-off
Flashing red led, water
pressure is too low (*)
Flashing red led, heating sensor fault (SM)
Flashing red led,
plant safety
valve tripped (*)
Red led on, ignition blocked:
rotate selector CR/OFF/EST/INV/RESET
to release position ()
to restore operation
Flashing red led, safety stat tripped.
Rotate selector CR/OFF/EST/INV/RESET
to release position ()
to restore operation
Flashing red led, fan fault.
30 minutes after the fan has switched off,
the board will attempt a restart
(*) When all 0.5 to 2.5 bar leds are off, check the
water pressure transducer connection.
Fig. 16
Flashing red led, D.H.W. sensor fault (SB)
Flashing red led, flame detection circuit fault
15 13
1
3
5
7
8
910 11
12
14 6
610
KEY
1 Ignition electrode earth faston
2 Ignition electrode faston
3 Fuse (1,6 AT)
4 Fuse(0,16 AT)
5 “ANN. RIT.” connector
6 “POT. ACC.” trimmer
7 Conector “MET-GPL”
8 D.H.W. potentiometer
9 Detector electrode faston
10 “POT. RISC.” trimmer
11 C.H. potentiometer
12 Selector CR/OFF/EST/INV/RESET
13 DIP SWITCH
14 Connector “Modureg Sel.”
15 Connector “Albatros”
NOTE: To gain access to trimmers (6) and (10), nscrew the central hea-
ting potentiometer knob
Fig. 17
Dewy 30/80 Dewy 30/130

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“Mod reg Sel.” connector (14 fig. 17)
With the bridge disconnected the boiler
is predisposed to function with the SIT
gas valve, and with the bridge connected
it is predisposed to function with the
HONEYWELL gas valve.
“Albatros” connector (15 fig. 17)
The bridge must always be disconnected.
It is connected only when multiple boilers
are installed in a sequence/cascade.
ATTENTION: It is essential that the opera-
tions described above be carried o t by
a thorized technical staff.
3.2 TEMPERATURE SENSOR
AND WATER PRESSURE
TRANSDUCER
Tables 3 - 3/a show the resistance values
(Ω) that are obtained on the sensor as the
temperature varies and the transducer
values obtained as the pressure varies.
When sensor (SM) is interr pted,
neither of the boiler's heating services
will f nction. With D.H.W. sensor (SB)
interr pted, the boiler will only work in
heating mode.
3.3 ELECTRONIC IGNITION
Ignition and flame detection is controlled by
two electrodes located on the burner.
These guarantee maximum safety with
intervention times, for accidental switching
off or gas failure, of within one second.
3.3.1 Operating cycle
Rotate the selector knob to summer or win-
ter, and verify that green led ( ) lights up to
confirm the presence of voltage.
The burner must be ignited within 10
seconds. However, it is possible for ignition
failures to occur, with consequent activa-
tion of signal indicating that the control box
has “locked out”.
Gas fail re
The control box runs through the cycle
normally sending electric power to the
ignition electrode. The electrode conti-
nues spark discharge for a maximum of
10 sec.If the burner does not light, the
lock-out indicator will light up.
This may occur upon first ignition or
after long periods of boiler lay-off when
there is air in the pipes. It may be caused
by the gas cock being closed or by one of
the valve coils having a break in the win-
ding, so that the valve cannot open.
Ignition electrode fails to spark
In the boiler, only the gas to the burner
is seen to open. After 10 sec. the war-
ning light indicating equipment “lock-
out” lights up.
This may be due to a break in the wire of
the electrode or to the wire not properly
fastened to the electric terminal of the
control box;
No detection of flame
The continuous spark discharge of the
electrode is noted starting from ignition
even though the burner is lit.
After 10 seconds have elapsed, the
sparks cease, the burner goes out, and
the warning light indicating equipment
“lock-out” lights up.
There could have a break in the wire of
the sensing electrode or the electrode
itself is touching earth: the electrode is
worn out and needs replacing. The con-
trol box is defective.
When there is a sudden voltage failure, the
burner shuts out immediately; when power
supply returns, the boiler will start up again
automatically.
3.4 FLOW SWITCH SAFETY VALVE
A flow switch safety valve (17 fig. 3) interve-
nes, blocking the operation of the burner if
the boiler is without water due to the for-
mation of an air lock in the heat exchanger
or if the circulator is not working, or, model
“30/80”, because the “Aqua Guard Filter
System” is obstructed with impurities.
NOTE: If replacing the flow switch valve,
make s re that the arrow stamped on the
valve points in the same direction as the
flow of water.
3.5 SYSTEM AVAILABLE HEAD
For boilers with the standard fittings, the
residual head for the heating system on
the basis of rate of flow is represented in
the diagram in figure 18.
TABLE 3 (Sensors)
Temperature (°C) Resistance (Ω)
20 12.090
30 8.313
40 5.828
50 4.161
60 3.021
70 2.229
80 1.669
TABLE 3/a (Transd cer)
Pressure Resistance (Ω)
(bar) min max
0 297 320
0,5 260 269
1 222 228
1,5 195 200
2167173
2,5 137 143
3108113
3,5 90 94
0
600
200 1600 140012001000800600400
PORTATA (l/h)
PREVALENZA RESIDUA (mbar)
500
400
100
200
300
vers. 30/80
vers. 30/130
Dewy
Fig. 18
1 HIGH TEMPERATURE ZONE
FLOW RATE (l/h)
RESIDUAL HEAD (mbar)

3.5.1 Head with total rate of flow
to other zones
In “30/130” versions using the second
and third zone kit, determine the head avai-
lable to the zones as shown in the following
example:
Rate of flow calculated for zone 1 = 350 l/h
Rate of flow calculated for zone 2 = 400 l/h
Rate of flow calculated for zone 3 = 400 l/h
To obtain head available to zone 1, add the
total rate of flow to the other zones (in this
case zones 2 and 3): 400 l/h + 400 l/h =
800 l/h.
As shown in the graph (fig. 18/a) at the
800 l/h curve, head at 350 l/h for zone 1
= 180 mbar.
The same procedure may be applied to
other zones to obtain:
Zone 2 = 350 l/h + 400 l/h = 750 l/h.
As shown in the graph at the 800 l/h
curve, head at 400 l/h = 160 mbar.
Zone 3 = 350 l/h + 400 l/h = 750 l/h.
As shown in the graph at the 800 l/y
curve (curve E), head at 400 l/h = 160
mbar.
3.5.2 Head available with the low
temperat re kit
In “30/130” versions using the low tempe-
rature kit, residual available head on the
basis of rate of flow is represented in the
graph in fig. 18/b.
111
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0200 1600
140012001000800600400
PORTATA (l/h)
PREVALENZA RESIDUA (mbar)
500
400
100
200
300
A
DEWY 30/130
B
C
D
E
A= 0 l/h D= 600 l/h
B= 200 l/h E= 800 l/h
C= 400 l/h
Fig. 18/a
0200 1600
140012001000800600400
PORTATA (l/h)
PREVALENZA RESIDUA (mbar)
500
400
100
200
300
DEWY 30/130
A Zona alta temperat ra
B Zona bassa temperat ra con
valvola miscelatrice a 40°C
A
B
Fig. 18/b
1 HIGH AND 1 LOW TEMPERATURE ZONE
3 HIGH TEMPERATURE ZONES
FLOW RATE (l/h)
RESIDUAL HEAD (mbar)
FLOW RATE (l/h)
RESIDUAL HEAD (mbar)
A High temperat re zone
B Low temperat re zone with
mixer valve at 40°C

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4.1 D.H.W. PRODUCTION
The preparation of hot water is guaranteed
by the glass storage tank unit with magne-
sium anode for the protection of the boiler
unit and inspection flange for its control and
cleaning.
The magnesi m anode m st be checked
ann ally and s bstit ted when it is worn.
It is advisable to place a sluice gate at the
entrance of the D.H.W. tank unit which,
apart from the total closure, allows the reg-
ulation of the supply capacity.
If the boiler does not prod ce hot water,
make s re that the air has been released
by pressing on the man al vents after hav-
ing switched off the main switch.
4.2 GAS VALVE
The boiler, is equipped standard with the
HONEYWELL VK 8115M gas valve (fig. 20).
4 USE AND MAINTENANCE
12
3
4
5
Fig. 20
KEY
1 Regulation intake
2 EV1-EV2 coils
3 Pressure inlet upstream
4 Pressure inlet downstream
5 OFF-SET
CR1
CR
TA (5)
SONDA
SANITARIO
CONNETTORE J2
COPERTURA
TA (6)
SB (11 )
SB (12)
CIRCUITO CON VALVOLE DI ZONA
NOTA: I relé vengono impiegati solo nel caso
le valvole di zona siano prive di micro.
L
N
TA TA1
VZ RVZ1 R1
CIRCUITO CON POMPE DI ZONA
L
N
TA TA
P
RP1 R1
KEY
TA-TA1 Zone room stat
VZ-VZ1 Zone gas valve
R-R1 Zone relay
CR-CR1 Zone microvalve or relay contact
P-P1 Zone pump Fig. 19
COVER
CONNECTOR J2
CIRCUIT WITH ZONE VALVE
CIRCUIT WITH ZONE PUMP
NOTE: Relays are used only if the area valves have
no microswitches.
D.H.W.
SENSOR
3.6 SMOKE STAT
To protect the polypropylene conduit from
smoke the appliance is provided with an
exhaust thermostat (27 fig. 3 - 42 fig. 3/a).
3.7 MAINS ELECTRICITY
CONNECTION
Use a separate electricity supply to connect
the room stats and relative zone valves or
pumps.
The micro or relay contact connection is
made to TA-CR-SE (J2) connector of the cir-
cuit board after having removed the jumper
(fig. 19).