SAS NWT Operator's manual

1
BOILER
Z A K Ł A D M E T A L O W O
-
K O T L A R S K I
28-100 Busko-Zdrój, Owczary, ul. Przemysłowa 3
Phone: [phone], Fax: [phone]
TECHNICAL
-
START
-
UP DOCU ENTATION
of water boiler’s for heating installations
SAS NWT type
adopted for black coal combustion of nut coal
SAS NWT

2
INDEX
page
Conformity declaration
3-4
1.
Introduction
5
2.
Use of boiler
5
3.
Boiler construction description
5
4.
Technical data
6
5.
Fuel
6
5.1 Fuel 6
5.2 Alterntive fuel 7
6.
Boiler’s
assembly guidelines
7
6.1 Requiremends for boiler-room 7
6.2 Boiler’s arragement 8
6.3 Connecting boiler to a chimney 8
6.4 Connecting boiler to a heating installation 8
6.5 Connecting boilers to electrical installation 9
7.
Operation and inst
allation guidelines
9
7.1 Filing with water 9
7.2 Boiler’s firing up 10
Table
(technical
–
exploitation parameters)
11-13
Boiler’s construction scheme
14
7.3 Burning 15
7.4 Cleaning the boiler 15
7.5 End of heating season 15
8.
Terms of safe
exploitation
16
9.
States of important boiler’s function
ing
16
10.
Protection means
17
11
.
Terms of delivery
18
12
.
Recycling
18
13
.
Terms of warranty
18
Service repair
s
21
Warranty card
22

3

4

5
Dear buyer and user of boiler of SAS NWT type. This technical start-up documentation
contains all necessary information required for energy-saving, safe and longstanding
exploitation of your boiler.
We kindly ask you to get familiar with documentation content prior to assembling and
starting the exploitation of a boiler. Hereby documentation shall be kept for future use.
Upon familiarization with this manual, the user will be able to utilize this device in the
optimum way. Careful reading of the manual will help in effective and safe exploitation
of the boiler.
Boilers of SAS NWT type are designated for water installations of the central heating
systems, open type with gravitational or forced water circulation, protected according to
presently being in force, both domestic or the union detailed regulations (e.g. PN-91/B-
02413 – Boilers of SAS NWT type installed in accordance to hereby documentation
recommendations are not subject to the commissioning led by the Branch Office of
Technical Inspection). Boilers are specifically recommended for the flats heating in
single-family homes, pavilions, etc., where calculated feeding water temperature does not
exceed 85°C, and working pressure does not exceed 1,5 bar. Required gases draught
pressure after a boiler is 0,30 - 0,55 mbar (depending on boiler’s power). These boilers
may also work in hot water installations utilizing a heat exchanger.
Boiler’s selection for building heating should be based on heat balance, according to
regulations in force, both domestic and the union (e.g. PN-B-02025:2001).
Coal heating boiler SAS NWT type is provided with controller and blow-in fan. It is
modern design with lower combustion of solid fuels and three-duct combustion chamber
system. The boiler is made of steel plates welded type
∗
. The front chamber (pos. 4)
makes up a furnace with a water grate. Basic boiler’s elements are shown on the
drawing (p. 13). The water jacket (pos. 3) it is a cuboids shape structure with double walls,
separated by water partitions. At the upper part, the furnace is also closed with water jacket
what gives maximum use of gases heat. The water grate (pos. 9) makes up uniform unit
together with a heat exchanger, so it is not replaceable. Between water grate there are
cast iron movable grates (pos. 10
*
∗
). Under a heat exchanger, on its entire section,
there is an ash pan chamber. In the back part of it, there is an opening for
combustion chamber cleaning (pos. 17). At the upper part of boiler, under the cover
∗
Internal baffles ( elements having contact with fire) are made of boiler iron, 6mm thick. uter body of the
water jacket is made of steel plane, 4 mm thick.
** Does not apply to boilers of power above 36kW
1.
INTRODUCTION
2. USE THE BOILER
3. BOILER CONSTRUCTION DESCRIPTION

6
(pos. 16), there is a flap of combustion chamber (pos. 15), which during boiler’s work,
transfers gases into a channel placed between water partitions to the smoke conduit (pos.
12). It also enables easy access to combustion chamber, when cleaning operations
take place. To the upper part of a heat exchanger the hot water connector is welded
(pos. 19), and to the lower part, on the back wall, the return water connector is welded
(pos. 20). Blowdown connection (pos. 18) is placed on the lateral wall In the upper part of
boiler there is also special connector G 1” (pos. 25), enabling a thermometer to be
mounted.
Traditionally, fuel charge door (pos. 5), furnace door (pos. 6), and ash box door (pos. 7), are
placed on the front wall of the boiler. Use of these door enables easy access when
combustion and ash pan chambers cleaning is considered.
Fumes are carried out to a chimney through the smoke conduit (pos. 13) placed at the
back side of a boiler. The smoke conduit is equipped with mounted smoke throttle
(pos. 14), rendering draught regulation. On the smoke conduit backside, there is a smoke
conduit cleaning hole (pos. 13).
The entire heat exchanger’s construction is wrapped with insulation material (pos. 2), a
mineral wool, which fill the space between the heat exchanger and boilers casing (pos. 1).
Coal heating boilers of SAS NWT type, are equipped with a controller and blow-in fan.
Boilers work based on the process of forced air delivery. The process is then possible
because of fan (pos. 22), which is operated with electronic controller (pos. 23) connected
to the mains.
Distinctive function of the whole set: boiler, controller (temperature regulator) and
blow-in fan, is that boiler’s temperature is exactly kept on the level set by user on
the controller. The controller measures water temperature in boiler in the constant
mode, and based on the reading adjusts the operation of fan. This way, it also controls
the air volume required for fuel combustion process. At the same time, the controller
operates the circulation pump (provide the heating installation is equipped in such a pump).
Detailed design description, and the controller’s operation and exploitation may be found
in the content of the controller’s manual attached to hereby documentation.
Basic energetic parameters are structured in the table (p. 11-12) and on the drawing (p. 13-
14).
5.1. FUEL
The basic fuel for heating boilers of SAS NWT type is a black coal for energetic
applications of the nut grade (acc. PN-91/G-04510 type 32.1 class 24/12). That type of
fuel guarantees that the declared power may be achieved.
4. TECHNICAL DATA
5. FUEL

7
5.2. ALTERNATIVE FUEL
The alternative fuel for coal heating boilers of SAS NWT type is a mixture of the black coal
grades as follows: 70% of coal the nut grade ( class 24/12 acc. to above mentioned norm)
and 30% of coal the fine coal grade (class 21/15 acc. to above mentioned norm). These
boilers are also fit fir combusting long flame fuels, such as: brown coal and wood in different
forms, e.g. chips, silver, shavings, etc.
The wood has to be seasoned at least one year! Wet wood combustion lowers the
efficiency and the lifetime of a boiler. It also obstructs the declared power for slow
combustion sustainment. For this type of boiler it is not recommended to relay only on the
fine coal.
Boiler’s assembling should be performed by qualified and authorized personnel
(qualified person upon adequate training and authorized for performing maintenance and
repair works).
The fitter’s obligation is to get familiar with the product, its functioning and
protection systems functionality.
Prior to boiler’s assembling it is strictly necessary to get familiarized with the
content of hereby Technical-Start-Up Documentation.
6.1. REQUIREMENTS FOR BOILER-ROOM
The boiler room, where the heating boiler for central heating installation shall be
installed, must conform the requirements of detailed regulations being in force, at the
country of destination (e.g. PN-87/B-02411).
In particular, the following requirements shall be fulfilled:
the boiler rooms should be located as centrally as possible to rooms which are
covered with heating system, and the boiler itself should be placed as close as
possible to chimney (chimneys),
boiler room entrance door should be opened on the outside, and be made of
inflammable materials,
the boiler room should have air blow-in ventilation, a channel with section no
less than 50% of the chimney section, but not less than 21 x 21 cm, with
the exit at the back part boiler’s room , (lack of such ventilation or obstruction may
cause: smoking, inability to get higher temperature),
the boiler room should have air blow-out ventilation under room’s ceiling with
section no less than 25% of the chimney section, but not less than 14 x 14 cm
(the purpose of this system is to carry out harmful gases).
NOTE: Employing of mechanical blow-out ventilation is unacceptable.
The boiler room should be provided with day and artificial lighting.
6. BOILER’S ASSE BLY GUIDELINES

8
6.2. BOILER’S ARRANGEMENT
Special foundation for boiler is not required, however it is recommended to put it on concrete
platform 2 cm high, but it may be also practiced to put it directly on the fire-proof
floor. Boiler’s layout should ensure easy and safe operation of such elements, as
furnace, ash box and fuel loading, and do not obstruct cleaning operations.
The front of boiler should be distant from the opposite wall no less than 2 m, and
similarly, boiler’s sidewalls no less than 0.5 m
6.3. CONNECTING BOILER TO TE CHIMNEY
Chimney channel and connection should be performed according to the requirements
of detailed regulations being currently in force in the country of destination (e.g. Ministry
of Infrastructure Decree, as of 1 April 2002 Journal of acts no. 75).
A boiler should be connected to a chimney with smoke conduit, which is slightly
rising towards the chimney. Smoke conduit length should not exceed 0.5 m. Area of
chimney – smoke conduit connection should be precisely sealed.
The chimney’s height and section, as well as accurateness of its construction shall ensure
obtaining required chimney draught of min. 0.30 – 0.55 mbar.
Selection of the chimney’s height and section comparing to boiler power should be
based on detailed regulations being in force in the country of destination.
Assuming that it is not possible to achieve such parameters for chimney, and
chimney draught problems are experienced, resulting in improper boiler performance,
the gases blow-out fan, or chimney base together with built-in fan may be applied, for
supporting and stabilizing the draught. It is important for the chimney to has its beginning
at the level of boiler room floor, for the reason that gases leaving the boiler are able to
be repelled. It is also important, that in the bottom part of chimney there is washout
whole with tight closing.
In order to avoid the air back draught possibly appearing in the chimney, its height should
be above a crest of roof not less than 1.5 m. Chimney’s utility (permeability) should
be checked and confirmed by authorized chimney-sweeper at least once a year.
PRIOR TO BOILER COMMISSIONING THE CHIMNEY SHOULD BE BASKED!
NOTE: It is recommended that the flue is made of stainless steel material.
Low temperatures in the boiler cause wet gases emission. This may be found as the reason of
wetting and corroding of brick chimneys.
6.4. CONNECTING BOILER TO THE HEATING INSTALATION
The boiler should be connected to heat in installation with screw connectors. Protecting
measures for water heating installations of opened type should be according to detailed
regulations being in force in the country of destination (e.g.PN-91/B-02413).

9
Volume of pressure vessel should be equal at least 4% volume o water in the entire heating
installation.
NOTE: Ascending and descending safety pipe as well as circulation pipe must not be
equipped with any valves. In addition, those pipes and the pressure vessel should be
protected against freezing.
In the front upper part of insulation there is G 1” connector for thermometer. If
thermometer will not be mounted on it, this connector should be plugged. Boilers of SAS
NWT type may work with gravitational or forced water circulation. If installation is provided
with circulation pump, than on feeding/return pipe the differential valve should be installed.
When blackout or pump malfunction occurs, this valve will open and the system start work
running by gravitation.
NOTE: It is recommended to connect the boiler to heating system provided with three-
or four-pass valve. The main advantage of such connection is boiler protection function
against low temperature corrosion, preventing it from premature wear.
If not satisfactory to comply with manufacturer’s recommendations in reference to
maintaining given heating water temperature ranges occurs (table TECHNICAL –
EXPLOATATION PARAMETERS p. 11-12, point 12, 13 it concerns in particular long-
lasting return water temperature below 55°C), then the boiler should be connected to the
heating installation equipped with three- or four-pass valve protecting it against low
temperature corrosion.
6.5. CONNECTING BOILER TO ELECTRICAL INSTALLATION
Boiler room should be equipped with electrical installation 230V/50Hz should be
according to detailed regulations being in force in the country of destination.
Electric socked should be earthed. Grounding functionality should be checked. Cable
extensions are forbidden. Faulty installation may cause the controller to be destroyed or be
unsafe for the user. Controller and other cooperating devices are powered with 230 V,
therefore all connections shell be made by qualified personnel (certified electrician).
NOTE: Electrical cables of powered devices should be placed away from boiler’s
parts, which tend to be hot during exploitation of boiler ( cover of the upper
washout hole, smoke conduit, door).
7.1. FILING WITH WATER
Boiler and the entire installation water filling is to be performed using blowdown connection.
This activity should be performed slowly allowing the air residing in the
installation to be removed. It is accomplished when water is going out of overflow pipe.
When filling the heating system installation with water it is recommended to loose
screw connection at the place of boiler – installation assembly (on the hot water
connector). Once water is flowing out, tight the connection.
7. OPERATION AND EXPLOITATION GUIDELINES

10
NOTE: Filling installation with water when boiler is in use, especially if it is very
hot is strictly forbidden, as boiler’s damage or fracture may be caused.
Once heating season is over do not get rid of water from heating installation and boiler.
When required, water may be let of through blowdown connection to a drain once it is cooled
down.
7.2. FIRING UP A BOILER
Firing up a fuel in boiler should be started when checked if heating installation is filled with
water, and water is not frozen. It should also be checked, if water is not leaking through
thread fittings on boiler. Do not forget to heat the chimney prior to the firs startup.
Before the fire up, smoke throttle in the smoke conduit should be fully opened, as
well as ash box and furnace door, likewise the fuel charge.
The operation should be performed slowly, using crimpled pieces of paper and wood. Then
thin layer of coal is applied. Once a coal is glowing, the ash box and furnace door must be
closed. Open fuel charge door and fill the combustion chamber with fuel reaching the level of
the upper door, close the fuel charge door and switch on controller. Set the required
temperature on the controller.
BOILER SAS NWT IS THE LOWER COMBUSTION TYPE
AND SHOULD NOT BE FIRED UP FROM THE TOP!
During fire up process the boiler should be monitored until it gets feeding water
temperature of 45°C. It is important, as varying fuel quality may cause the boiler to
go out.
In case of fire in boiler went out during fire up operation a furnace must be cleaned,
boiler’s should be ventilated and fire up should start again.
During the process a smoking or sweating of boiler may occur. Once boiler and chimney duct
get hot, those adverse phenomena should go away.
NOTE: Person operating the boiler should know that some of boiler’s areas are
hot, therefore protective gloves should be worn! The same applies to protective goggles.

11
* when working at average load (50% of rated power)/ rated load ** if manufacturer recommendations regarding heating water temperature ranges are
not observed, boiler must be
obligatory connected to central heating system e uipped with three- or four – ways valve, protecting against so called
„ low temperatures corrosion”
No.
Parameter
Unit
SAS NW
T
1.
Boiler power
kW
12,5
14
17
23
29
36
42
48
2.
Boiler heated surface
m
2
1.0
1.2
1.5
2.0
2.5
3.0
3.5
4.0
3.
Boiler efficiency
%
79,4 ÷ 85,0
4.
Fuel consumption
kg/h
1,1
1,2
1,4
1,5
1,7
2,0
2,3
2,5
5. Load chamber capacity
dm
3
kg
25
~20
30
~25
35
~30
50
~40
75
~60
85
~70
95
~80
110
~95
6.
Exhaust temperature
°C
90 ÷ 210
7.
Boiler water capacity
l
51
57
63
74
97
108
114
122
8.
Boiler weight (without water)
kg
245
260
290
320
375
440
520
580
9.
Re uired chimney draught
mbar
0,30
0,45
10.
Maximal allowable
operating
pressure bar 1.5
11.
Maximal allowable working temp.
°C
85
12.
Recommended
heating water
working temp. °C 60 ÷ 80
13.
Minimal return water temp.
°C
55
14.
Power supply
V/Hz
15.
Power consumption
16.
Dimensions
A
mm
1080
1080
1080
1145
1190
1290
1440
1465
A1
7
90
790
790
810
840
1000
1050
1100
B
550
550
580
580
670
670
700
750
B1
450
450
520
520
590
590
680
730
H
940
990
990
1060
1110
1150
1190
1190
H1
900
960
960
1040
1090
1130
1170
1170
H2
320
320
320
320
320
320
320
320
H3
690
74
0
740
780
825
875
900
880
C
360
360
360
400
460
460
550
570
C1
190
190
190
230
290
290
380
410
D
490
550
550
620
660
720
740
740
17.
Smoke conduit diameter
mm
∅
160
∅
160
∅
180
∅
180
∅
200
∅
200
∅
220
∅
220
18.
Connector pipe diameter
(supply/return) " G 1½ G 2
19.
Load door opening
mm x mm
280x170
280x170
340x170
340x170
340x170
340x170
340x210
340x210
20.
Minimal chimney height
m
7
8
9
10
21.
Re uired chimney dimensions
/diameter
cm x cm
mm
16x16
∅180
17x17
∅200
18x18
∅210
20x20
∅220
21x21
∅240
22x22
∅250
25x25
∅280
25x25
∅280
TECHNICAL AND OPERATION PARA ETERS OF SAS NWT BOILER

12
No.
Parameter
Unit
SAS NWT
1.
Boiler power
kW
52
58
62
68
72
78
90
100
110
132
150
175
200
2.
Boiler heated surface
m
2
4.5
5.0
5.5
6.0
6.5
7.0
8.0
9.0
10.0
12.0
14.0
16.0
18.0
3.
Boiler efficiency
%
7
9,4 ÷ 85,0
4.
Fuel consumpcion
kg/h
2,9
3,6
4,5
5,0
6,1
7,2
8,3
9,2
10,1
12,3
13,6
15,1
17,2
5. Load chamber capacity
dm
3
kg
120
~90
170
~130
180
~140
200
~150
210
~160
2
4
0
~180
270
~200
330
~250
350
~260
430
~320
500
~380
550
~410
630
~470
6.
Exhaust t
emperature
°C
90 ÷ 270
7.
Boiler water capacity
l
130
160
180
210
245
265
295
345
405
465
510
580
660
8.
Boiler weight (without water)
kg
630
650
670
800
840
1050
1270
1450
1550
1770
2120
2370
2470
9.
Re uired chimney draught
mbar
0,45
0,55
10.
Maximal
allowable opperating
pressure bar 1.5
11.
Max
.
allowable working temp.
°C
85
12.
Reccomended heating water
working temp. °C 60 ÷ 80
13.
Minimal return water temp.
°C
55
14.
Power supply
V/Hz
~230
/50
15.
Power consumption
W
to 375
to 525
16.
Dimensions
A
mm
1420
1470
1485
1500
1500
1630
1680
1740
1930
2020
2140
2360
2360
A1
1020
1070
1070
1070
1070
1175
1225
1275
1465
1535
1585
1775
1775
B
725
725
755
795
795
845
895
945
945
995
1045
1045
1095
B1
665
655
695
735
735
785
835
885
885
935
9
85
985
1035
H
1500
1560
1560
1560
1610
1635
1685
1735
1735
1780
1830
1830
1870
H1
1470
1530
1530
1530
1580
1605+C*
1655+C*
1705+C*
1705+C*
1750+C*
1800+C*
1800+C*
1840+C*
H2
350
300
300
300
300
300
300
300
300
300
300
300
300
H3
1190
1210
1
210
1210
1240
1240
1280
1310
1310
1330
1360
1360
1400
C
410
460
460
460
460
510
560
600
650
690
740
790
840
D
560
610
610
610
670
670
670
720
720
760
780
780
860
1
7
.
Smoke conduit dimensions
mm x mm
240x235
255x245
265x255
285x255
285x265
295x290
305x305
305x315
315x320
335x340
365x360
385x380
405x400
18.
Connector pipe diameter
(supply/return) " G 2½ or G 3 Flange joint
19
.
Load door opening
mm x mm
340x200
340x200
340x200
340x200
340x200
340x200
380x240
380x240
380x240
380x240
430x260
430x260
430x260
20
.
Minimal chimney height
m
10
11
13
15
21
.
Re uired chimney dimensions
cm x cm
25x25
26x26
26x26
28x28
28x28
28x28
30x30
30x30
30x30
30x30
32x32
32x32
32x32
* when working at average load (50% of rated power)/ rated load
** if manufacturer recommendations regarding heating water temperature ranges are not observed, boiler must be obligatory connected to central heating system e uipped with three- or four – ways
valve, protecting against so called „ low temperatures corrosion” C* handle use to transport a boiler ( dimension 150 mm)
TECHNICAL AND OPERATION PARA ETERS OF SAS NWT BOILER

13
SAS ECO BO SAS EC
OF SAS E
O BOIL
1. boiler cover (body) 6. furnace door 11. mobile-grates lever * 16. combustion chamber cover 21. temperature sensor well
2. insulation 7. ash box door 12. smoke conduit 17. combustion chamber cleaning 22. blowing fan
3. water jacket 8. glow prevention grid 13. smoke conduit cleaning hole 18. blowdown connection 23. temperature regulator (controller)
4. furnace chamber 9. water grates 14. smoke throttle 19. hot water connector pipe 24. safety valve installation connector pipe
5. fuel charge door 10. cast iron grates (movable)* 15. combustion chamber flap 20. return water connector pipe 25. thermometer installation connector pipe
BOILER CONSTRUCTION SCHE E OF SAS NWT TYPE (12,5 – 48 kW)

14
ER
1. boiler cover (body) 6. furnace door 11. cleaning door 16. combustion chamber flap 21. temperature regulator (controller)
2. insulation 7. glow prevention grid 12. blowing fan 17. smoke conduit 22. safety valve installation connector pipe
3. water jacket 8. water grate 13. temperature sensor well 18. smoke conduit cleaning hole 23. blowdown connection
4. return water connector pipe 9. furnace chamber 14. hot water connector pipe 19. smoke throttle 24. combustion chamber cleaning
5. ash box door 10. fuel charge door 15. combustion chamber cover 20. thermometer installation
connector pipe
BOILER CONSTRUCTION SCHE E OF SAS NWT TYPE (52 – 200 kW)

15
7.3. BURNING
During normal exploitation of boiler burning process is based on periodic refueling and
raking a grate by moving the arm of mobile grate mechanism (pos. 11* ). Single load of
basic fuel is sufficient for 6 hours of boiler operation at rated power. With lower
capacity the period of slow burning (time gap between refueling) may be elongated to
several hours.
When refueling the controller should be switched off, then slowly open the fuel charge
door, introduce another load of fuel, close the door and switch on the controller again. In
emergency situations (blackout), open ash box door, switch the controller off the mains, in
order to prevent ventilator from working once electric power is resumed. Otherwise
fumes may be blown out into boiler room. In the central heating installation heating
requirement is changing along with outdoor conditions, e.g. daytime and temperature.
Temperature of water leaving out the boiler depends also on thermal characteristic of
building, e.g. construction materials, in particular the insulation one. With boilers of SAS
NWT type, regulation of combustion intensity and heat capacity, depending on weather
conditions, is done by microprocessor controller. The controller ensures optimal combustion
process, by regulating fan and circulation pump work. Fan’s rotational speed depends on
measured temperature and parameters setting. Once fire up process is finished, and boiler
riches required temperature, the controller keeps it constant. If boiler’s temperature is
lower than set, rotation speed of fan is increased, if it is higher, scavenges of the
boiler are only performed.
7.4.CLEANING THE BOILER
In order to use fuel in the safe manner, and to get declared boiler’s power and heat efficiency,
keeping adequate cleanliness of combustion chamber and convection channels is
indispensable.
As far as furnace chamber of the boiler is considered, special attention should be paid when
removing ash and slag from between grate orifices and chamber’s walls. Such a cleaning
should be exercised prior each boiler’s fire up process, but not less than after 150÷260
of boiler’s continuous work. Cleaning of convection channels, with volatile ashes
residues, should be performed every 3÷7 days, depending on quality of burned fuel. The
cleaning operation is done through washout holes indicated on the drawing (p. 13, pos.
15, 17). Once cleaning is finished, those wholes should be sealed tightly.
Cleaning the chimney duct is not less important. In case of low temperatures in boiler in
the longer time, it is necessary to “heat” the boiler periodically (at least once a week)
(burning-out in temperature 70÷80°C). This is important for extending the durability of
boiler.
7.5. END THE HEATINHG SEASON
Once heating season is finished, or in other cases of scheduled stops, wait the fuel to
be completely burned out. Once boiler is out and cooled down, remove from the furnace all
remains of burned fuel and apply cleaning and conservation of the entire boiler. Pay
special attention to lubricate inner partitions and movable elements with oil.
*Does not apply to boilers of power above 36kW

16
For the period of brake time, water should not be drained out of boiler and
installation. If boiler’s stopping took place in emergency conditions, glowing fuel shell be
removed into metal box and taken out of boiler room, or alternatively the gloving fuel may be
covered with sand.
NOTE: it is not allowed to put out the fire with water when in the boiler’s room!
In order to maintain safe operation of boiler following rules need to be exercised:
keep the boiler in good technical condition and its installation, in particular
take care of the installation tightness, as well as keep sealed door and washout
openings,
keep boiler room tidy, do not stack any objects not related to boiler’s operation,
in the winter time do not apply brakes in heating process, preserving water in
installation against freezing. Especially, if the safety pipe is frozen (overflow
pipe) it may be very dangerous because of potential damage of boiler,
it is forbidden to fire up a boiler by use of petrol, kerosene, solvents,
explosion may occur causing he operator to be burned
in case of installation malfunction and lacking water in a boiler do not fill it in, if
boiler is hot, as it may cause its damage
all defects of boiler should be immediately removed.
NOTE: The boiler should be regularly cleansed from soot and tarry residues – any
residue on the convection channels walls disrupts proper heat transfer from the
exchanger, lowering this way efficiency of device and increases fuel consumption
PROBLEM CAUSE/ SYMPTOM REMEDY
Low heat capacity
of device
gases channels obstructed clean the channels through
washout holes
lack of fresh air delivered
to boiler room check blow-in ventilation, improve its permeability
burning inadequate fuel apply proper quality fuel (see
chapter "Fuel" p. 6)
boiler power not up to
heating area
improper design and
erection of heating
installation
Improper functioning of
controller, fan adjust controller’s settings up to weather conditions or quality of
fuel, if controller does not work
properly consult manual
8. TER S OF SAFE EXPLOITATION
9. STATAS OF I PROPE BOILER’ S FUNCTIONING

17
Smoking
chimney draught not sufficient check chimney’s permeability and its parameters (see tab.
height and section to boiler’s
power p. 11-12 ), check if
chimney end is not lower than
roof ridge
gases channels dirty clean up boiler through washout
holes
sealing rope indoor and
washout openings worn replace a rope (to be replaced regularly)
improper assembly of
boiler and
chimney connection
check accurateness
very low atmospheric
pressure
improper position of
smoke throttle to current
chimney draught
adjust sprocket position if it is
closed to much
Sudden temperature
and pressure rise installation valves closed
open the valves
pressure vessel frozen heat the pressure vessel
Water licking out of
boiler so called. "boiler’s sweating", this is natural
process caused by
temperature difference in
boiler
during boiler’s start-up and after
each standby "heat the boiler"
e.g. burn it up to 70°C and keep
that temperature for several
hours
"Hitting, shooting"
in boiler air in the heating installation and boiler
due to improperly
performed filling in
process
"heat the boiler" e.g. burn it up to
70°C and keep that temperature
for a longer time, till the whole
air
is removed from boiler remove
the air from installation
by opening the valves on
radiators.
In order to ensure the failure-free and safe operation (to maximum extent) the
controller of boiler is provided with many protection functions. If faulty status is
discovered, the alarm is launched (acoustic signal), and a message is shown on display
(depending on controller version).
TERMAL PROTECTION
The controller is equipped with safety temperature limiter, preserving the boiler against
overheating (boiling water in installation), if the controller is damaged. Temperature limiter
makes up mechanical protection measure, which bimetallic sensor (placed at the boiler water
10
.
PROTECTION E
A
NS

18
temperature sensor) is cutting off power supply to blow-in fan, if temperature is higher than
90°C (pump still working).
TEMPERATURE PROTECTION
The controller is equipped with additional temperature protection (electronic one), for the
case of bimetallic sensor is faulty. If temperature of 95°C is exceeded, cutting off power
supply to blow-in fan is executed.
SAFETY VALVE
The boiler is equipped with connector for adapting a safety valve, being an additional
protection against pressure raise due to water freezing in part of installation, especially in the
pressure vessel. The safety valve is not supplied with the boiler.
Commercially delivered boilers are assembled and supplied with complete set of tools
for maintenance together with the technical-start-up documentation.
Before connecting a boiler to a heating installation, make check if all boiler’s components
are in good working condition, and that the boiler is fully equipped.
NOTE: Boilers need to be transported in the vertical position!
In order to recycle the boiler worn device deliver to specialized recycling unit, according to
detailed regulations being in force in the country of destination.
1. Manufacturer grants warranty for proper functioning of the heating boiler SAS NWT,
what is confirmed with the stamp of factory.
2. Manufacturer grants warranty for efficient the boiler installed and operated according to
all terms and recommendations included to Technical -Start-Up Documentation (TSD).
3. A buyer gets together with terms of warranty hereby Technical-Start-Up-Documentation
(TSD), which is laid down rules for the proper operation and safe exploitation of the
heating boiler. Hereby documentation (TSD) must be reading careful and it is obligatory.
1
1
.
TER S OF DELIVERY
1
2
.
BOILER’S RECYCLING
13. TER S OF WARRANTY

19
4. Warranty terms are binding from the date of the purchase for the period of:
a. 4 years * for efficient functioning of the boiler,
b. 2 years on the heat protective grate,
c. 2 years on electronics and automation components mounted on the boiler and produced
by other manufacturers:
•controller
•blowing fan
5. Warranty does not cover consumable items:
•sealant (rope)
•sensors
6. Manufacturer is obligated to carry out the charge free repair under warranty in time period
of 14 days starting from the date of application (done by user).
7. Boiler’s repair, the construction or insulation alterations made by user or other third parties
– will cause the warranty to be invalid.
8. Application of reclamation should be addressed at manufacturer.
9. Boiler replacement realized by manufacturer is only possible based o expert opinion, that
repair is not workable.
10. If the advertiser does not allow double-warranty repairs, despite the willingness of the
guarantor to comply with it, is deemed to have resigned from the advertiser claims
contained in the application of reclamations.
11. In case of unfounded service summon, the customer shell pay travelling and work
costs. Before you call service, please familiarize yourself with the chapter "States of
improper boiler’s functioning".
We always offer help by telephone.
12. Warranty card makes up the only ground for charge free repair
NOTE: Manufacturer reserves the right to introduce changes in the construction of
the product for modernization purpose. Such changes may not be reflected in
hereby documentation, however basic, described properties of the product shall be
maintained
_________________________
* boilers of power 48 kW and higher are cover with 24-months warranty

20
Any remarks and questions on boiler’s SAS type exploitation shall be addressed:
ZAKŁAD METALOWO-KOTLARSKI
Owczary, ul. Przemysłowa 3
28-100 Busko - Zdrój
Tel.: [phone] Fax: [phone]
http: www.sas.busko.pl
e-mail :[email protected].pl
[email protected]
Technical-Start-Up Documentation valid from 03.01.2011.