SARIgas EcoTop Series User manual

SARIgas  ETF / ETFL / ETFW Page 1
CE
EXAMINATION
CERTIFICATES
n°CE 51BR3234
Mod. ETF 28A
ETF 28A MA
ETFL 28A
ETFW 28A
EFFICIENCY RULES
n°CE 51BR3235DR
Mod. ETF 28A 
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
ETF 28A MA 





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

ETFL 28A 




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ETFW 28A 

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WALL-MOUNTED
COMBINATION BOILERS
HIGH EFFICIENCY
SEDBUK Certified
Energy Efficiency Band B
SERIES 
Mod. ETF 28A – ETF 28A MA – ETFL 28A – ETFW 28A
INSTRUCTIONS FOR:
USE AND MAINTENANCE.
INSTALLATION.
TO OBTAIN THE BEST PERFORMANCE FROM THE BOILER, PLEASE READ THESE INSTRUCTIONS CAREFULLY.
THIS BOOKLET MUST BE KEPT WITH THE COMBINATION BOILER SO THAT IT CAN BE CONSULTED BY THE USER AND QUALIFIED
PERSONNEL.

SARIgas  ETF / ETFL / ETFW Page 2
Rev.0
USER INSTRUCTIONS
- Control panel mod.. 

 ETF 28A / ETF 28A MA / ETFL 28A / ETFW 28A Page 3
- Control panel guide mod.  Page 4
- Boiler start up and shutt off mod.   Page 5
- Useful tips for using the appliance Page 6
- Maintenance Page 6
- Changing gas Page 6
- Ventilation in the room Page 7
- Useful safety and installation tips Page 7
-Working problems Page 8
-Fault description table Page 8
INSTALLATION INSTRUCTIONS
- Technical specifications Page 9
- Installation procedures Page 10
- Dimensions Page 11
- Layout pre-assembly template fittings Page 12
- Air intake / exhaust connection systems Page 13
- Coaxial pipe connection example Page 14
- Separate pipes connection example Page 15
- Max. permitted lengths for the coaxial pipe Page 16
- Max. permitted lengths for the separate pipes Page 16
- Ventilation of the rooms Page 17
- Piping Page 18
- Gas and electrical supply – bleeding the boiler Page 18
- Starting up – Before starting up the boiler Page 19
- Bleeding the system – antifreeze precautions Page 19
- Regulation with external control – connection diagram Page 20
- Wiring diagram mod.  ETF 28A / ETF 28A MA / ETFL 28A / ETFW 28A Page 22
- Fittings and other spare parts for intake/exhaust piping systems, condensate trap and coaxial pipe Page 23
- Fittings and other spare parts for intake/exhaust piping systems, condensate trap and separate pipes Page 23

SARIgas  ETF / ETFL / ETFW Page 3
Rev.0
USER INSTRUCTIONS
You have placed your trust in a firm specialised in heating and producing hot water for domestic use. This boiler has
been designed to meet to European requirements. It has been manufactured with utmost care, in compliance with
current safety regulations.
Each appliance has been tested when working, and the warranty certificate enclosed with the appliance documents
has been personally signed by the qualified technician who carried out the inspection.
Should any problem occur, please return the warranty card (the original or a copy) to help us look into the matter.
- The replacement of electric, hydraulic parts and of the circuit gas have been in original SARIgas.
- The replacement of defective parts must be done at qualified staff and authorised by SARIgas
- SARIgas declines each responsibility to damages occuring because of the improper use of the apparatus, errors of installation,
using the not original materials of replacement.
IMPORTANT:
- The boiler and document packaging material (foamed polystyrene, plastic bags) must be kept out of the
reach of children, as they are a potential source of danger.
- Children and disabled persons should not use the appliance without supervision.
- Yearly maintenance must be carried out on the boiler together with a two-yearly check of the heating
system, controlling the safety components.
- The sealed components must not be interfered with or removed.
- Do not store chemicals and/or inflammable substances in the room where the boiler is installed.
USE:
- Incorrect use of the boiler can cause breakdown or poor working of the appliance.
- If there is a smell of gas, do not touch the switches or any other electric appliances (telephone – intercoms
– electric fans - etc.).
Immediately open all the doors, windows and any other opening to grant rapid ventilation of the room.
Turn off the central gas outlet valve on the meter or the bottle valve. Immediately call a Authorised
Boiler Service Engineers (A.B.S.E.) to carry out the servicing.
BEFORE USING THE BOILER
- The first start up of the boiler must be carried out by an Authorised Boiler Service Engineers (A.B.S.E.) and
the warranty certificate must be filled in thoroughly.
-Please read these instructions carefully. By doing so, you will obtain the maximum boiler performance thus
saving on energy.
Control panel  ETF 28A / ETF 28A MA / ETFL 28A / ETFW 28A
Fig.1
A - On/Off Sanitary hot water selector switch
B - Summer / / Winter heating setting selector switch
C - Heating system lacking water indicator lamp
D - Ready for working indicator lamp
E – Burner lighting failure indicator lamp/reset button
F – Pressure gauge
G – Boiler thermometer
H – Programming clock (optional)

SARIgas  ETF / ETFL / ETFW Page 4
Rev.0
CONTROL PANEL GUIDE
0/ Iselector switch OFF/ON

Fault reset (turn knob “A” to “0” position) wait at least 5 seconds then turn
knob ”A” to position “Reset”
Adjusting hot water temperature from 35°C to 55°C
Note: It is recommended to adjust hot water temperature from 38°C to 45°C .
Higher temperatures demand higher gas consumption and are responsible for lime scale deposits
on main exchanger. Continuous mixing of hot water at high temperature with cold water causes
distribution temperature instability.
  Summer programme position: domestic hot water only

Position : during the summer period, when there is no call for hot water for long
periods of time. This function, if active, reducing waiting time when hot water is needed.
The function remains active for an hour from the last hot water call; subsequently
the "cfp" function is de-activated automatically up to the new following hot water call.
Select heating circuit water temperature value, from 1 to 9 according to:
with traditional panel heating systems water temperature in heating circuit may be set
between 30°C min. (position 1) and 80°C max. (position 9).
with low temperature systems set water temperature in heating circuit between 30°C min.
(position 1) and 45°C max. (position 9).
with low temperature systems on which an (optional) external probe has been fitted turn
knob to a position between 1 and 9 (so that internal temperature is set in function of external
temperature).

“LOW PRESSURE IN BOILER” indicator “C”
If lit consult pg. 5.
Note: in some cases dim illumination is possible due to a negligible electrically
induced effect.

Ready for working indicator lamp “D” permanently lit; this indicator has other tasks,
such as signalling permanent faults or temporary appliance signals by flashing a
number of times which corresponds to type of fault. See fault description table pg.8

“BURNER LIGHTING FAILURE” indicator/reset button “E”
When button is lit it means the burner has failed to light when expected to due to provisional
causes (gas shortage) or permanent ones ( ignition sequence failure or flame sense circuit
faulty).
Important: if indicator “E” illuminates, turn knob “A” on position “0”, press button “E” and wait at
least 1 minute before turning knob “A” to position > “I”. Wait at least 10 minutes before carrying
out another reset sequence, following the instructions above stated.

SARIgas  ETF / ETFL / ETFW Page 5
Rev.0
STARTING UP THE BOILER
IGNITION OF THE MAIN BURNER (Fig. 1)
- Check that the water pressure to the system is 1 bar (pressure gauge F, Fig. 1). If the pressure is below 0.7 bar, fill the boiler
again through the filling valve Fig.23/B.
- If the gas tap is installed, check it is open.
- Turn off the electric bipolar supply switch to the boiler, which is fitted on the outside of the appliance.
- Turn knob Ato position I.
- The boiler is now ready to work normally. Main burner ignition is controlled by the boiler thermostat and/or the room thermostat in
the WINTER programme, or by the drawing off hot water.
WORKING
Maximum water supply temperature is strictly connected to
demanded water load and water temperature at intake.
Fig.2 represents maximum water supply temperature given a
water intake temperature of 15°C.
Fig.2
Summer position DOMESTIC HOT WATER ONLY PROGRAMME
- Turn knob “B” to SUMMER programme
- Turn on any hot water taps.
- When hot water demand exceed 2.8 l./min., the boiler automatically gets ready to produce hot water.
- Turn the temperature setting knob Ato the desired temperature.
- Mixing hot water with cold is not recommended, it is preferable to adjust desired supply temperature directly on appliance.
“Comfort Programme” Position THIS PROGRAMME IS DESIGNED TO MAINTAIN BOILER DOMESTIC HOT WATER CIRCUIT
UP TO TEMPERATURE.
-Turn knob “B” to programme; verify that the indicator "D" Fig.1 is flashing with intermittence for about 40
seconds; automatically also in absence of drawing of water, the boiler with short cycles of turning the power on
and off will maintain the sanitary water temperature contained in boiler; the function of maintenance of the internal
temperature at the boiler will remain active for the following 60 minutes after the last drawing. To each new
following drawing the function will be restored automatically.
Winter position HEATING PROGRAMME
- Turn knob “B” to WINTER position, if room thermostat is not fitted turn knop “B” to desired temperature
- If the system has a room thermostat fitted, it must be adjusted to the maximum temperature setting.
The burner fires automatically and the heating cycle starts up.
Set the room thermostat to the desired temperature.
- If external probe (optional) is fitted, turn knob “B” to a value between 1 and 9. Once maximum room temperature has
been reached, turn knob “B” until desired temperature has been reached. From this moment on the heating system
temperature will vary according to external temperature. A room thermostat is nevertheless recommended in order to
reduce gas consumption and improve comfort.
SHUTTING OFF
For short winter periods (12 – 24 hours) Turn the selector switch “A”to the position “O”.
For long winter periods
Boilers  

 ETF / ETFL / ETFWare equipped with a “automatic 2 level alarm antifreeze protection system” both on the
heating circuit and on the internal domestic hot water circuit, the one on the heating circuit turns on at temperatures below 5°C
and the one on the D.H.W. circuit turns on at below 3°C.
These functions are activated at the low temperature recorded on the water internal circuits of the boiler, the circulation pump
alone
or the circulation pump together with the gas burner, provided the boiler is electrically powered and knob “A” Fig.1 is turned to ”1”
position. Once 7°C and 35°C temperatures have been reached in the heating circuit, antifreeze system shuts off automatically. It
is good practice, however, to protect the heating circuit with a suitable, specific chemical additive (antifreeze).
If the system is not protected with antifreeze, and the gas valves must be turned off upstream and the electrical supply
to the boiler turned off, empty the heating and the domestic hot water circuits to avoid damage to the various
components, the heating system (pipes, radiators, etc.) and the hot and cold water supply pipes.

SARIgas  ETF / ETFL / ETFW Page 6
Rev.0
USEFUL SUGGESTIONS FOR USING THE BOILER
Water pressure in the system (see “F” Fig.1)
- Pressure, when cold, must not go below 0,5 bar.
- Pressure, when hot, must not exceed 2,5 bar.
- Too frequent fillings, can be caused by boiler leaks. In this case, call out the installing firm.
N.B. If the system is subject to frequent emptying and, therefore, frequent filling, the water must be duly treated and the
"hardness" of the water, cause of lime scaling that damages the boiler, must be reduced to a minimum.
Central heating
If a room thermostat has not been installed
- Set the boiler temperature on the basis of the room temperature.
If a room thermostat has been installed
- Set the boiler temperature (knob B, Fig. 1) between ref. 6 – 9.
- Turn the room thermostat to the desired temperature
Producing domestic hot water (see “A” Fig.1)
-If the main temperatures are kept at satisfactory levels, gas is saved and the life span of the specific
exchanger is extended, as the formation of lime is considerably reduced.
-Set the outlet hot water temperature directly on the boiler it isn’t advisable to reduce the water taking to low levels
(2,5 L/min.) because the burner could switch off or the temperature couldn’t keep the fixed valve.
-If the system has a "single command" type valve, the valve must be completely turned to the "hot" position, this
way the temperature of the outlet water is stabilised.
If the boiler locks-out repeatedly: (indicator/reset button “E” is lit Fig.1)
-After having turned knob “A” (Fig.1 pg.3) to position “0” press indicator/reset button “E”, wait about 1 minute then
turn knob “A” to previous position (from 35 °C to 55°C).
-If after a few attempts at unblocking the ignition device E Fig.1, the burner does not fire, it could be due to a fault or
due to a failure in the gas supply, call out the installing firm.
WARNING Do not insist in attempts at unblocking, unless at least 10 minutes have passed between one attempt
and another. The continuous outlet of gas during ignition can cause an elevated build up of gas in the combustion
chamber and therefore, when it lights up, an explosion .
MAINTENANCE
Bleeding the system
Fill with the water the circuit of heating when the boiler is turned off and open the breathes presenting in the warmed bodies up
to the coming out first water. To each following cleaning of the system, to restore the water pressure as indicated Pag. 5.
External cleaning
-To clean the outside of the boiler, we advise using non-abrasive detergents.
-Do not use solvents or inflammable products.
-Use protective gloves for cleaning, against sharp or cutting edges.
- We advise cleaning only once the boiler has been turned off for at least 30 minutes, to avoid exposure to
overheated parts.
Boiler maintenance
-The minimum compulsory maintenance involves a yearly visit by a Authorised Boiler Service Engineers (A.B.S.E.)
who ascertains the correct working of all the safety devices, and cleans the internal working parts, checks and sets
if necessary.
-Yearly maintenance of the boiler is advised. The maintenance gives guarantee of the correct functioning of the apparatus
and guarantees the perfect working of the appliance and constant high performance.
Fumes exhaust pipe/ condenses exhaust pipe
- The fumes exhaust pipe must be controlled (by a Authorised Boiler Service Engineers technician) who checks the
efficiency of the pipe both for air-tightness and draft. The condenses exhaust pipe must not be modified or obstructed;
the maintenance and the cleaning must be carried out yearly .
GAS CHANGE
If the supply gas to the boiler is changed, specific changes must be made to internal parts of the boiler, after which gas
settings must be carried out again. Only Authorised Boiler Service Engineers (A.B.S.E.) can carry out these
changes.

SARIgas  ETF / ETFL / ETFW Page 7
Rev.0
VENTILATION OF THE ROOMS
VENTILATION OF THE ROOM IS COMPULSORY AND INDISPENSABLE FOR THE FOR SERIES “  ” ETF
28A / ETF 28A MA / ETFL 28A / ETFW 28A in configuration B 22 B 32 (pag.15,16.).
These boilers must be installed in suitable surroundings, which guarantee the correct level of air intake for
combustion; they must be connected to a flue gas evacuation circuit (flue pipe).
Adhere to local legislation regarding the ventilation required for the room.
Air vents on the outside walls of the where the boiler is installed:
-Must have a free net air passage that conforms to current legislation in size;
-Must be made in such a way that the inside and outside vents cannot be covered or blocked.
-Must be protected with grids or wire net, etc., but the protection must not reduce the size of the passage as
indicated above.
-Correct aeration can be obtained from several vents, as long as the total net air passage corresponds to current
legislation.
-If the vents cannot be made near to the floor, the section of the vent opening must be increased, as indicated in
the specific standards.
-If there are other elements in the boiler room that draw in air to work, the section of the vent opening must be
adequately increased.
-If the boiler is installed in a room that contains a cooking hob without safety device, as it does not use an open
flame, the ventilation vents must be increased.
-The suction hood is always to be considered as an electric fan.
-An open fireplace must have its own air draft, otherwise gas appliances of the B 22 or B 32 type cannot be installed
in the room.
If an external opening cannot be made, air flow from an adjacent room is allowed as long as the room is not in
negative pressure due to the presence of another draft (fireplace or stove) or another suction appliance, and it is not
used as a bedroom.
IMPORTANT:
It’s necessary to not obstruct even partially the court of ventilation to guarantee the hygiene and security of the
environment; if the room where the boiler EcoTop (in configuration B22 B32) installed it is not aired well there can be
verified by frequency the arrest of the principal burner by the activation of the system of certainty of the apparatus.
The boilers model EcoTop (ETF 28A / ETF 28A MA / ETFL 28A / ETFW 28A) in configuration type "B22" and "B32"
needs the comburent air intake directly from the room where they are installed. So, for the correct functioning , it’s
necessary that the grill of air intake rif.4-5 fig. 11 pag. 13 is ever obstructed and the section of passage of the air is
adequate.
- Don’t insert the boiler in hanging not aired sufficiently and don’t use it like plan of support for other objects.

SARIgas  ETF / ETFL / ETFW Page 8
Rev.0
WORKING PROBLEMS
(For tests to be carried out inside the boiler contact the Authorised Boiler Service Engineers “A.B.S.E.”).
THE BOILER DOES NOT WORK AND THE INDICATOR LAMP "D" FIG. 2, IS TURNED OFF
-No electrical supply.
-Safety fuse belonging to internal electronic circuit is likely to have blown; contact A.B.S.E.
INDICATOR “D” ON P.C.B. FLASHES (REPETITIVE SEQUENCES)
-The appliance is equipped with an electronic circuit which automatically checks that specific internal components are working
properly as well as signalling by means of indicator “D” high and low temperature alarms within the heating and domestic hot
water circuits. Each sequence of flashes coming from indicator “D” will terminate with a 4 second pause, after which the
sequence will start again and go on until the alarm is over (if temporary). Alarm memory may be reset by turning knob “A” to
position “0” for at least 3 seconds. If after reset procedure the alarm condition is still present, indicator “D” will restart flash
sequence.In the event that the boiler operates correctly but the indicator keeps flashing, contact A.B.S.E. for assistance
APPLIANCE DOES NOT PRODUCE HEAT ON BOTH PROGRAMMES
- Knobs A and B Fig. 1, of the boiler are set too low.
- The room thermostat (if fitted) is set too low.
- The safety limit thermostat has triggered (indicator lamp E comes on, Fig. 1).
- Water capacity too low (less than 2.5 l./min.).
- Gas supply blocked, for all models (indicator lamp E comes on, Fig. 1).
- Accensione della spia luminosa “C” (mancanza di pressione idrica in caldaia)
- Indicator lamp C comes on (low water pressure in boiler)
- The ignition and flame control device is faulty (contact the A.B.S.E.).
THE MAIN BURNER DOES NOT REMAIN ALIGHT
- Poor gas supply in the pipes to the meter/boiler or low gas pressure to the burner.
- The electric PHASE /NEUTRAL line is not correctly connected to the boiler (inverted) or the earth connection is missing.
- Flue is not properly connected or lenght is not correct (see the tables pg.16).
THE BOILER IS NOISY WHEN THE MAIN BURNER IS ALIGHT (indicator lamp D flashing Fig.1)
- Ball valves are closed (no water circulation to the heating system).
- Water circulation to the heating system is too low (contact the A.B.S.E.).
- Presence of air in the heating system (Bleeding the system).
- Heat exchanger is scaled with lime or with other deposits within the heating system (contact the A.B.S.E.).
- Boiler valves (if fitted) are closed (verify the opening)
- Electricity supply could be less than 195 V (contact the A.B.S.E.).
SMELL OF GAS
- Turn off the main gas valve. Open the doors and windows to aerate the room.
- Do not turn on any switches or any other electrical appliance (telephone – intercom – electric fans – etc.).
- Immediately call the Authorised Boiler Service Engineers to carry out the necessary checks to the system.
Number of
flashes
INDICATES ETF 28A
ETF 28A MA
ETFL 28A
ETFW 28A
1
HIGH TEMPERATURE IN DOMESTIC HOT WATER CIRCUIT 
2
HIGH TEMPERATURE IN HEATING CIRCUIT 
3
ANTIFREEZE IN D.H.W./HEATING CIRCUIT WARNING THRESHOLD 
4
ANTIFREEZE IN D.H.W./HEATING CIRCUIT ALARM THRESHOLD 
5
D.H.W. CIRCUIT TEMP. PROBE FAULTY - SHORT CIRCUIT 
6
D.H.W. CIRCUIT TEMP. PROBE FAULTY - INTERRUPTION 
7
HEATING CIRCUIT TEMP. PROBE FAULTY - SHORT CIRCUIT 
8
HEATING CIRCUIT TEMP. PROBE FAULTY - INTERRUPTION 
9
•WHEN STARTING MIN. PRESSURE SWITCH IS “ON” (close) 
10
•WHEN STARTING MAX. PRESSURE SWITCH IS “ON” (close) 
11
•WHEN RUNNING MIN. PRESSURE SWITCH IS “OFF” (open) 
12
•WHEN RUNNING MAX. PRESSURE SWITCH IS “OFF” (open) 
13
•WHEN RUNNING MIN. PRESSURE SWITH GOES FROM “ON” TO “OFF” 
14
•WHEN RUNNING MAX. PRESSURE SWITH GOES FROM “ON” TO “OFF”

15
FAN SPEED PROBE FAULTY 
16
BURNER DOES NOT IGNITE AFTER 5 ATTEMPS 
17
BOILER PUMP ANTI-BLOCKING SYSTEM AUTOMATICALLY ACTIVATED 
18
EXTERNAL PROBE FAULTY (IF INSTALLED) 
•Referred to the contact C-NO

SARIgas  ETF / ETFL / ETFW Page 9
Rev.0
INSTALLATION INSTRUCTION
IMPORTANT: The packing elements (foamed polystyrene, plastic bags) must be kept out of the reach of children, as they are a potential source of danger.
This boiler has been designed to meet European standards. It has been manufactured with greatest care, in compliance with safety regulations. Each appliance has been
tested when working, and the inspector who carried out the tests has signed the warranty certificate enclosed with the appliance documents.
Check that the boiler supplied corresponds perfectly with its intended use.
Indications of the type of boiler and gas to be used are given on the plate fitted behind the control panel, outside the boiler and on the boiler packaging.
The products described in this manual have been correctly manufactured in conformity with current legislation.
The boilers are manufactured in accordance with EN specific safety Standards for fuel gas, as per Directive 90/396/CEE regarding gas appliances and Directive
92/42/CEE regarding performance levels of new hot water boilers, that are driven by liquid or gas fuels.
This appliance must be installed in accordance with the following Statutory Regulations and British Standards Codes of Practice:
Building Regulations (England and Wales). The Buildings Standards (Scotland) Regulations. Gas Safety (Installation and Use) Regulations 1984. Current I.E.E. Wiring
Regulations and Local Water Authority By-Laws.
Codes of practice: BS.6891 –Installation of low pressure gas pipework;
BS.6798 –Installation of gas fired hot water boilers of a rated input not exceeding 60 kW.
BS.5449:1 –Forced circulation hot water system (domestic central heating system smallbore and microbore).
BS.5546 –Installation of gas hot water supplies for domestic purposes (2
nd
family gases).
BS.5440:1 –Flues (for gas appliances of rated input not exceeding 60 kW).
BS.5440:2 –Air supply (for gas appliances of rated input not exceeding 60kW).
TECHNICAL DATA
Mod.


ETF 28A – ETF 28A MA - ETFL 28A - ETFW 28A
Configuration
C
12
C
32
C
42
B
22
B
32
Category



Input max
Btu / h - kW
95,540 - 28
28
Input min.
Btu / h - kW
51,190 - 15
Output max. adjustable (60-80°C)
Btu / h - kW
91,790 – 26.9
Output max. adjustable (30-50°C)
Btu / h - kW
96,910 – 28.4
Output min. adjustable (60-80°C)
Btu / h - kW
49,140 – 14.4
Output min. adjustable (30-50°C)
Btu / h - kW
52,210 – 15.3
Max. net efficiency (60-80°C) % 96.2
Max. net efficiency (30-50°C) % 101.4
Energy efficiency Directive CE 92/42









Min.net efficiency at 30% part-load (47°C) % 96.1
Min.net efficiency at 30% part-load (30°C) % 101.2
Loss of heat from casing (∆t 50°C)
% 0.4
Loss of heat through the chimney with the burner alight % 3.2
Loss of heat through the chimney with the burner turned off % 0.2
Max. working pressure of the heating circuit P.S.I. - bar
42.67 – 3
Adjustable temperature in heating mode
°F - °C
86 / 176 – 30 / 80
Adjustable temperature in heating at low temp. mode
°F - °C
86 / 113 – 30 / 45
Max. water temperature °F - °C
194 – 90
Expansion vessel capacity gals - litres 1.76 / 1.53 - 8 / 7
Input Max. in D.H.W. mode Btu / h - kW
95,540 - 28
28
Input Min. in D.H.W. mode. Btu / h - kW
44,360 - 13
13
Max. output in D.H.W. mode. Btu / h - kW
91,790 – 26.9
Min. output (working) in D.H.W. mode. Btu / h - kW
42,660 – 12.5
Adjustable temperature in D.H.W. mode °F - °C 95 / 131 – 35 / 55
Max. flow rate raised (∆t 25°C)
gals - litres / min
3.39 / 15.4
Specific flow rate (EN 625)
gals - litres / min
2.81 / 12.8
Min. flow rate gals - litres / min
0.55 / 2.5
Min. / Max. D.H.W. sanitary water pressure P.S.I. - bar 1.42 / 99.57 – 0.1 / 7
Electric connections
V/ Hz 230 / 50
Rated absorption
A 0.58
Electric appliance protection
IP X5 D
Max. electricity consumption
W 130
NOx (0% O
2
methane) in accordance with EN 483 Classe 5°
CO
2
content (methane) “C” type boilers % Max. – Min
7.8 – 6.2
CO
2
content (LPG G30) “C” type boilers % Max. – Min
8.7 – 7.3
Flue flow rate in weight (methane: G20) g/s Max. – Min.
14.5 – 9.5
Flue flow rate in weight (LPG: G30) g/s Max. – Min.
37.3 – 23.3
Fume temperature (methane: G20) coaxial 0,5m
°C Max. – Min.
78 – 68
Fume temperature (LPG: G30) coaxial 0,5m
°C Max. – Min.
71 – 65
SAP Seasonal Efficiency 86.8
Energy Efficiency Band B

SARIgas  ETF / ETFL / ETFW Page 10
Rev.0
INSTALLATION REGULATIONS
installation must by carried out by a Authorised Boiler Service Engineers in accordance with current legislation, local standards
and with the greatest care.
The boiler must not be installed in rooms used for storing inflammable substances (paper, rags, solvents, polystyrene, plastic,
etc.).
Do not install the boiler in spaces where it is exposed to direct contact with cooking steam, in damp spaces, in rooms subject to
chemical vapours, such as laundries, hairdressers, etc.
POSITIONING THE BOILER
This depends on the position of the fume exhaust duct fitting (fig. 4, 5 and 7) and it must be installed in a covered and
protected area, in accordance with local legislation .
FUME EXHAUST
- The flue pipe must be sized conforming to current legislation, and made of suitable materials.
- The flue pipe must be connected (where necessities) with a picker of condensate and this joined with the water-supply of
downflow.
- The connector pipe, from the boiler attachment to the flue pipe stack, must be of an adequate section, equal to that of the boiler
connector. It must be adequately waterproofed
- Installation must allow free expansion and dismantling of the materials.
- The slope between the connector pipe and the flue pipe must be towards the boiler.
FUME EXHAUST FOR BOILERS WITH OPEN CHAMBER FORCED EXPULSION, TYPE "B
22
" "B
32
"
" B
22
" and " B
32
" boilers work by drawing the air to be burnt directly from the room where the boiler is installed, and connected in
accordance with the specifications on page 13, fig. 11.
FUME EXHAUST FOR BOILERS WITH SEALED CHAMBER FORCED EXPULSION, TYPE "C"
The "C" type boiler works by drawing the air to be burnt directly from the outside.
Wall boilers with forced draft can be fitted with either the modular outlet system "COAXIAL FLUE" or with "SEPARATE
FLUES", see figs. 9-10 on page 13, and in accordance with the distances given in the tables on page 16.
IMPORTANT:
It is ESSENTIAL to make sure that the products of combustion coming from the flue pipe cannot return into the building or in any
other room nearby, through the ventilators, windows, doors, natural air infiltration or through forced ventilation air conditioning
systems. In both cases, the flue gases can be expelled and the air drawn in either horizontally or vertically from the wall or the roof,
or through a double chamber flue pipe (only for versions with separate flues, configuration “C
42
”).
POSITIONING THE FUME EXHAUST TERMINALS
FORCED FLOW SEALED CHAMBER APPLIANCES WITH CONFIGURATION TYPE C12 B22 B32
Terminal position
A Below a window 600 mm
B Below an air vent 600 mm
C Below the gutter 300 mm
D Below a balcony (1) 300 mm
E From an adjacent window 400 mm
F From an adjacent air vent 600 mm
G From vertical or horizontal pipes or outlets (2) 300 mm
H From a corner of a building 300 mm
I From a recess in the building 300 mm
L From the ground or another walkway 2500 mm
M Between two terminals arranged vertically 1500 mm
N Between two terminals arranged horizontally 1000 mm
O From a front surface facing outwards without apertures or
terminals within a radius of 3 metres from the fume outlet
2000 mm
Fig.4
P From a front surface facing outwards with apertures or
terminals within a radius of 3 metres from the fume outlet
3000 mm
NOTE
1) Terminals below a balcony must be positioned so that the total path of the fumes, from the point at switch they are emitted to the outlet on the
external perimeter of the balcony, is no less than 2000 mm.
2) The terminal must be positioned no less than 500 mm from materials sensitive to the action of the combustion products (for example, plastic
gutters or downspouts, wooden jetties etc.) unless these material are adequately screened.

SARIgas  ETF / ETFL / ETFW Page 11
Rev.1
DIMENSIONS
Mod. 
ETF 28A
ETF 28A MA
ETFL 28A ETFW 28A
AWidth in - mm 17.71 - 450 20.66 - 525 22.72 - 577
BHeight fittings centre distance in - mm 26.22 - 666 26.96 - 685 44.49 - 1110
CDepth in - mm 13.38 - 340 10.43 - 265 10.43 - 265
DStack Ø in - mm 3.93 - 100 3.93 - 100 3.93 - 100
EDistance between stack axis-wall in - mm 8.66 - 220 5.70 - 145 4.68 - 119
FConnection centre distance in - mm 15.74 - 400 12.04 - 306 12.04 - 306
GDistance between gas/water fittings
wall centre line in - mm 5.98 - 152 3.03 - 77 7.36 - 187
FORCED DRAUGHT BOILERS ( Mod.  ETF 28A - ETFL 28A – ETF 28A MA)
Boilers for C 12 – C 32 – C 42 type configuration taking the air directly from the outside.
For C
42
configuration, refer to EN 483 standards, Chapter 8.2.1.4. paragraph "I".
ATTENTION: The ventilation of the boiler room is not asked
Boiler with coaxial flue pipe Boiler with separate flue pipe
ETF 28A
Wall
ETF 28A
ETF 28A MA ETF 28A MA
ETFL 28A
Wall
ETFL 28A

SARIgas  ETF / ETFL / ETFW Page 12
Rev.0
FORCED DRAUGHT BOILERS wall mounted (Mod.  ETFW 28A)
Examples of separate air intake/flue exhaust connection with
pipes Ø 80mm
Fig.7/1
Fig.7/2
Fig.7/3
Fig.7
Examples of coaxial connection with
pipes Ø 60/100mm
Fig.7/4
PREASSEMBLY TEMPLATE FITTINGS LAYOUT (optional)
KEY
HD
- Heating delivery Ø ¾”
SWO
- Sanitary hot water outlet Ø ½”
HR
- Heating return Ø ¾”
SW
I
- Sanitary cold water inlet Ø ½”
GAS
- GAS Inlet Ø ¾”
CT
- Condensing Trap
Fig. 6
SV
- Safety valve 3 bars (42.67 P.C.I.)

SARIgas  ETF / ETFL / ETFW Page 13
Rev.0
AIR INTAKE / FLUE EXHAUST CONNECTION SYSTEM
IMPORTANT:
High output performance of Eco Top boilers requires great carefulness in choosing flue and condense-gathering systems. The
exhaust pipe of the condensate must not have drawn horizontal but a least slope of 5 % towards the water-supply of downflow. The
setting in work of the " flue pipe " it asks for the least slope of 3 % in the direction of the boiler or towards the point of " harvesting
condenses " of the water-supply (if foreseen).
INTAKE / EXHAUST WITH COAXIAL SYSTEM
With this kind of configuration, combustion air and exhaust gases are channelled through a concentric pipe system.
If horizontal coaxial pipes are chosen, the boiler must be fitted with a curved coaxial connector (1) Fig. 9, with vertical coaxial
pipes, straight coaxial connector (2). Fig.9 must be fitted.
INTAKE /EXHAUST WITH SEPARATE FLUE SYSTEMS configuration C
12
C
32
C
42
With this kind of configuration, combustion air and exhaust gases are channelled through two separate pipes. In this case
appropriate suction/exhaust connectors must be fitted (3).
For this version too, a vertical or horizontal wall/roof terminal can be fitted by using appropriate connectors, Fig.10 – Fig.11/A.
SYSTEM WITH EXHAUST PIPE ONLY configuration B
22 -
B
32.
With this system, combustion air is drawn directly from the room in which the boiler has been installed, while flue system may be
chosen according to Fig. 17 pg.15.
The suction connector (3) must be fitted with a protection (4) net as given in Fig. 11/A (B
22
).
Warning: the intake / exhaust connection systems must not exceed the maximum lengths allowed and
specified in the instructions (tables A.B.C. page 16).
Fig.9 Fig.10
Fig.11/A Fig.11/B
Coaxial pipe Separate pipes
Fumes exhaust pipe only
1) Elbow coaxial connector ∅60/100
(Art.01654).
2) Straight coaxial connector ∅60/100
(Art.01686).
A. Drawing off point for combustion
products and combustible air.
3) Intake/exhaust manifold kit ∅80 mm
for separate pipes, complete with
gaskets (Art.01658)
Or:
Intake/exhaust adapter kit ∅80/100
mm for separate pipes, complete
with gaskets (Art.01184).
A. Drawing off point for combustion
products and combustible air.
3) Intake/exhaust manifold kit ∅80 mm.
for separate pipes complete with
gaskets (Art.01658) B
22.
4) Protection grille (Art.00239).
5) Vertical coaxial adapter from ∅60/100
to ∅80 (Art.01685) B
32.
6) Drawing off point for combustion
products and combustible air.

SARIgas  ETF / ETFL / ETFW Page 14
Rev.0
EXAMPLE OF COAXIAL PIPES CONNECTION BOILERS (∅60/100mm)
This solution allows a max. length of the flue pipes of 3 metres for the horizontal pipe and 4 metres for the vertical pipe. Each
extra 90°connector that is fitted reduces by 1 metre the max. extension of the piping.
Fig.12 C 12
Horizontal outlet with intake/exhaust manifold bend and extension pipe
Fig.13 C 12
Horizontal outlet with straight manifold and extension pipe
Fig.14 C 32
Vertical outlet with extension pipes
Fig.15 C 32
Vertical outlet with bends and extension pipes

SARIgas  ETF / ETFL / ETFW Page 15
Rev.0
EXAMPLES OF SEPARATE PIPES CONNECTION BOILERS (∅80 mm)
This solution allows a max. length of the flue exhaust pipes plus air suction of 20 metres.
- The maximum length of the pipe is given by the sum of the flue exhaust pipe more the length of the air suction pipe.
- Each change of direction reduces the disposable length of the pipes to the next proportion:
For curves to 45°the reduction will belong 0,3 metres per unity (for pipe ∅80 mm and ∅100 mm ).
For curves to 90°the reduction will belong 0,8 metres per unity (for pipe ∅80 mm) and 0,5 metres per unity (for pipe ∅100
mm)
Fig.16 C 32
Vertical outlet with elbow manifold and extension pipes
Fig.17
If the B
22
configuration boiler is installed, part Art.00239
must be fitted to the air suction pipe (Art.01156).
B32 B22
Fig.19 C 42
Horizontal/Vertical flue outlet with bends and extension pipes
For the C
42
configuration refer to EN 483 Standard, Chapter 8.2.1.4
paragraph "I".

SARIgas  ETF / ETFL / ETFW Page 16
Rev.0
MAXIMUM LENGTHS ALLOWED FOR "COAXIAL" AIR INTAKE/EXHAUST PIPE SYSTEMS
The maximum length of the piping for the straight coaxial pipe is (see table A) for the horizontal pipe and 4 metres for the vertical version.
TABLE “A” Coaxial exhaust flue pipes configuration type C
12
C
32
fan speed
Coaxial horizontal from 0,5 to 2m with terminal Cod.01657
With exit: front / back / right / left Max.
Coaxial horizontal from 0,5 to 3m with terminal Cod.01657
With exit: front / back / right
Max.
Vertical pipe from 0.5 to 4m with terminal Cod.00230
Max.
.
MAXIMUM LENGHTS ALLOWED FOR SEPARATE AIR INTAKE/EXHAUST PIPE SYSTEMS ø80 / ø100
TABLE “B” Separate exhaust flue pipes in configuration C
12
C
32
C
42
fan speed
Separate ∅80 max 4m+4m with terminal Cod.00240
Separate ∅100 max 10m+10m without terminal
Min.
Separate ∅80 max 8m+8m with terminal Cod.00240
Separate ∅100 max 12m+12m without terminal
Medium
Separate ∅80 max 12m+12m with terminal Cod.00240
Separate ∅100 max 20m+20m without terminal
Max.
TABLE “C” Exhaust flue pipe ∅
∅∅
∅80 mm in configuration B
22
B
32
fan speed
Lenght max. exhaust flue pipe 6m with terminal Cod.00240
Min.
Lenght exhaust flue pipe from 6 to 16m with terminal Cod.00240
Medium
Lenght max. exhaust flue pipe from 16 to 23m with terminal Cod.00240
Max.
TABLE “D” Exhaust flue pipe ∅
∅∅
∅60 mm (air inlet pipe max 1 m) (C
12
C
32
C
42
)
fan speed
Lenght max. exhaust flue pipe 4m with terminal Cod.01536
Max.
Notes: - The maximum lengths for the flue pipes refer to material supplied by us.
- SARIgas shall not be held responsible for poor functioning of the boiler, damage to people or things caused by the use of
material not supplied by us.
IMPORTANT: if necessary, insulate the flue outlet pipe to avoid temperature drop of the fumes along the pipes. Max. drop allowed per metre
of pipe must be less than 34°F.

SARIgas  ETF / ETFL / ETFW Page 17
Rev.0
ROOM VENTILATION
THE VENTILATION OF THE PREMISES IS OBLIGATORY AND INDISPENSABLE FOR THE BOILERS MOD.
“  ” ETF 28A / ETF 28A MA / ETFL 28A / ETFW 28A in configurazione B 22 B 32 (vedi pag.15,16.).
These boilers must be installed in suitable environments, which guarantee the right level of combustible air
intake; they must be connected to an exhaust flue outlet pipe. For ventilation, refer to local legislation.
Air vents on the outside walls of the boiler room:
-Must have a free net air passage that conforms to current legislation in size;
-Must be made in such a way that the inside and outside vents cannot be covered or blocked.
-Must be protected with grids or wire net, etc., but the protection must not reduce the size of the passage as indicated
above.
-Correct aeration can be obtained from several vents, as long as the total net air passage corresponds to current
legislation.
-If the vents cannot be made near to the floor, the section of the vent opening must be increased, as indicated in the
specific standards.
-If there are other elements in the boiler room that draw in air to work, the section of the vent opening must be
adequately increased.
-If the boiler is installed in a room that contains a cooking hob without safety device, as it does not use an open flame,
the ventilation vents must be increased.
-The suction hood is always to be considered as an electric fan.
-An open fireplace must have its own air draft, otherwise gas appliances of the B 11BS type cannot be installed in the
room.
If an external opening cannot be made, air flow from an adjacent room is allowed as long as the room is not in
negative pressure due to the presence of another draft (fireplace or stove) or another suction appliance, and it is not
used as a bedroom.
IMPORTANT:
It’s necessary to not obstruct even partially the court of ventilation to guarantee the hygiene and security of the environment; if the
room where the boiler EcoTop (in configuration B22 B32) installed it is not aired well there can be verified by frequency the arrest
of the principal burner by the activation of the system of certainty of the apparatus.
The boilers model EcoTop (ETF 28A / ETF 28A / ETFL 28A / ETFW 28A) in configuration type "B22" and "B32" needs the
comburent air intake directly from the room where they are installed. So, for the correct functioning , it’s necessary that the grill of
air intake rif.4-5 fig. 11 page 13 is ever obstructed and the section of passage of the air is adequate.
- Don’t insert the boiler in hanging not aired sufficiently and don’t use it like plan of support for other objects.

SARIgas  ETF / ETFL / ETFW Page 18
Rev.0
PIPING
-The section of the piping depends on the methods currently used, using the curve given in the diagram (Figs. 21-22).
- We recommend using a capacity that keeps the temperature difference between delivery and return from the heating
system between 5° and 10°C.
Available head and capacities for heating systems at
the boiler fittings
Diagram of pressure drops of the sanitary water
circuit to the boiler fittings
Fig.21
Fig.22
HEATING ELEMENTS
- Radiators, convectors or fancoil heaters may all be used.
- As boiler temperature is variable, exchange areas may be calculated for a temperature range of 30°C min. and
80°C max.
-However we recommend calculating the exchange area by taking a lower temperature as reference value, thus
allowing to improve comfort and reduce energy consumption.
- The radiators must be fitted with adjustable input connectors, which allow balancing the system, and manual
bleeders on the top points.
BLEEDING THE BOILER
Before filling the boiler and the system with water, weaken the outlets presenting in the system to allow the blowing off the
contained air in the same time.
To carry out the water refilling of the heating circuit with the switch off boiler and open the outlets presenting in the warming
bodies up to the first outlet of the water. To each following cleaning of the system, restore the asked water pressure as indicated
Pag. 5.
CONNECTING THE GAS PIPES
The section of the pipes, between the metre and the boiler, must be of a size to reach the supply pressure given on
the label. It must be possible to close the piping if the boiler is dismantled, by fixing an interception valve between the
boiler and the gas pipe. For installation and the materials to be used, refer to local legislation. Ensure that the boiler is
compatible with the gas supplied.
ELECTRICITY SUPPLY
Boiler is supplied for 230 V 50 Hz Single phase “L”, neutral “N”. The method of connection to the mains electricity
supply must facilitate complete electrical isolation of the boiler preferably by the use of a fused double pole switch
having a 3mm (1/8 in.) contact separation in both poles.
Consult wiring diagram on page 20, Fig. 24.
- The earth wire must be connected to the earth terminal marked by the symbol .
A multiple PVC wire type H05 VV-F or H05 VVH2-F, must be used for the electricity supply wire, with a section of 3 x
0,75 mm
2
, and the earth wire to the boiler must be longer than the supply wires.
N.B. If the correct polarity is not respected, the boiler will halt and the block alarm will come on (lighted button E, Fig.1).
If there is minimum electric voltage (5 -10 V), between Neutral and Earth the boiler will not work correctly.

SARIgas  ETF / ETFL / ETFW Page 19
Rev.0
START UP
Important:
-Before filling the system, check that the pump is not blocked.
-If the pump is blocked, remove the protective cap and use a screwdriver to rotate the pump rotor pin to the right and
left (Fig. 23/A).
Fig. 23/A Fig. 23/B
-With the gas valve closed, check that the metre does not record the passage of gas for at least 10 minutes.
-Check that all the bleed valves on the system are open.
-Open the filling valve (Fig. 23/B) until the pressure given on the pressure gauge F, Fig. 1, indicates at least 1 bar
(14.22 P.S.I .).
-Close all the bleed valves in the system as soon as water starts to come out.
-At the end, close the filling valve when the pressure given on the pressure gauge is above 1.2 bar (max.1.5 bar)
17 P.S.I . (max..21.33 P.S.I. ): knob AFig. 1, must be in position "O" to carry out this operation.
Any future bleeding should be done with knob Ain position "O".
BEFORE STARTING UP THE BOILER
1) Carry out the wiring connections to the boiler to 230  Volt - 50 Hz, according to the wiring diagrams on page 20,
Fig. 24. Wiring schould be in 3 core PVC cable not less than 0,75 mmto BS 6500 table 16, wiring external to the
boiler must be in accordance with the current I.E.E. wiring regulations and any local regulations which apply. In the
areas where the electrical power is 230V “phase / phase” it is necessary to install an auto-transformer. (Cod.00847).
2) Before opening the gas valve tap, the pump must be turned for a few minutes, by turning knob A to "I" and
knob B to WINTER , after about ten minutes return knob B to SUMMER , open and close the cold water tap few
times with the interval of one minute. Then open the gas valve tap, press button EFig. 1and wait one minute before
using the boiler.
BLEEDING THE SYSTEM
If the air has not been completely bled from the system, the boiler will be noisy and will not work correctly.
Take out of the special points of bleeding possible " bags of air " accumulate during the first period of functioning.
The operation is carried out with switch off boiler; restore the system with initial water pressure.
PRECAUTIONS AGAINST FREEZING
Absence of functioning for short periods (12 – 24 hours)
– Turn the selector switch Ato 'O'
Absence of functioning for long winter periods
Boilers  

 ETF / ETFL / ETFWare equipped with a “automatic 2 level alarm antifreeze protection system” both on the
heating circuit and on the internal domestic hot water circuit, the one on the heating circuit turns on at temperatures below 5°C
and the one on the D.H.W. circuit turns on at below 3°C.
These functions are activated by the low temperature recorded on the water internal circuits of the boiler, the pump of circulation or
the pump and the gas burner , as long as the boiler is electrically powered and knob A, Fig, 1, is turned to "I".. When a
temperature of around 35°C is reached in the heating circuit, the "antifreeze system" is automatically deactivated It is good
practice, however, to protect the heating circuit , in the very cold places with a suitable, specific chemical additive (antifreeze).
If the system is not protected with antifreeze, and the gas valves must be turned off upstream and the electrical supply to the boiler
turned off, empty the heating and the hot water circuits to avoid breaking on components of the boiler, on the thermic system
(water-supplies, radiators and so on).

SARIgas  ETF / ETFL / ETFW Page 20
Rev.0
REGULATION WITH EXTERNAL CONTROL (optional)
The combination boiler can be controlled by an external regulation consisting of:
-Remote Control; (code – set remote control 20588)
The remote control permits the control and the regulation of the combination boiler and the faults signalling (led).
The maximum distance between the combination boiler and the remote control must be 300 metres (Fig.26).
The remote control must be linked to the combination boiler using an independent electric pipe without cables under
voltage.
The remote control is easy to install and to use and it gives the user the possibility to check the operating faults
through the luminous leds.
There are also other leds that permits to check the consumption of the boiler in real time. It’s also possible to link a
room thermostat to the remote control (see instructions below Fig.27 and 28).
-Ambient thermostat; It’s advisable to choose an high quality thermostat (with low differential). This ambient
thermostat must be linked to the connectors Cand Don the P.C.B. (Fig.25). The electrical connection must be cut
off using a cable composed by two wires (in accordance with local regulations).
-Time clock; (00301) The time clock can be installed directly in the combination boiler using the set of components
supplied by SARIgas in order to make the installation easier. The time clock must be linked to the wires C and D
after having removed the existing electrical connection (Fig.29).
-External temperature probe (E.T.P.); kit Cod.20589; installation of this kit is compatible with all fittings Fig.24 to
Fig.29.
WARNING: Before making any connections power supply must be disconnected!!!
WIRING DIAGRAM TO THE POWER SUPPLY WIRING DIAGRAM TO THE ROOM THERMOSTAT
Fig.24 ATTENTION : Fig.25
Fig.24/A
Wiring diagram to Miniaccumulate Termistore “M.T.P.”
Rif. Fig.25 In this king of connection, the existing
connection wire must be cut off from the connector
C-D of the circuit “  ”.
Supply cable is included and connected to appliance.
The connecting wire to the C-D terminal must not be
powered, and must be connected to a "clean" On-Off
contact.
Faulty connection of the C-D terminal: if the electric
wire is powered at 230 volt the adjustment card will burn
out and consequently cancel the guarantee terms.The
replacement of the power supply Fig. 24 must respect the
prescription to pag. 18.