SOLZAIMA SZM A PLUS 16 kW User manual

Pellet Boilers
Instruction Manual
English
Models
SZM A PLUS 16 kW
SZM A PLUS 24 kW
SZM A PLUS 32 kW
Read these instructions carefully before installing, using and servicing the unit. The
product is supplied with this instruction manual.
Mod.946-

Thank you for purchasing a SOLZ IM unit.
Please read this manual carefully and retain it for future reference.
* ll products here detailed meet the requirements of the EU Construction Products
Regulation (Reg. No. 305/2011) and meet EC; conformity approval;
* The pellet-run boilers are manufactured in compliance with European standard EN
303-5:2012;
* SOLZ IM is not responsible for any damage to units installed by non-qualified
personnel;
* SOLZ IM is not responsible for any damage to units not installed and used in
compliance to the instructions included in this manual;
* ll local regulations, including but not limited to national and European standards,
must be observed when installing, operating and servicing the unit;
* For assistance, please contact the unit’s supplier or installer. Remember to provide
the serial number of your boiler, which is detailed on the identification plate located on
the back panel of the unit, as well as on the sticker found on the plastic cover of this
manual.
*The technical service must be performed by the unit Installer or Supplier, except on
situations where the assessment performed by the installer or service engineer
determines that SOLZ IM should be contacted, if required.
Contact technical assistance:
www.solzaima.pt
apoio.clien[email protected]
ddress: Rua dos Outarelos; nº 111;
3750-362 Belazaima do Chão
Águeda – Portugal

Contents
1. Solzaima ................................................................................................ 1
2. Package content...................................................................................... 2
3. Safety precautions ........................................................................... 4
3.1. dvice in the event of a chimney fire ........................................................ 6
4. Technical specifications ............................................................................ 7
4.1. General vies .......................................................................................... 8
4.2. Connections views .................................................................................. 9
5. Installation of the pellet-run boiler ........................................................... 10
5.1. Before installation ................................................................................. 10
5.2. Minimum distances ................................................................................ 11
5.3. Installation of room thermostat or chrono-thermostat ................................ 12
5.4. Installation kit silo enlargement 225L (optional) ........................................ 13
6. Installation of pipes and fume exhaust systems ......................................... 18
6.1. Installation without a chimney ................................................................ 18
6.2. Installation with chimney ....................................................................... 24
6.3. Hydraulic installation ............................................................................. 25
6.4. Electrical installation .............................................................................. 28
7. Fuel ...................................................................................................... 30
8. Use of the pellet-run boiler ...................................................................... 31
9. Display ................................................................................................. 32
9.1. Home screen ........................................................................................ 32
9.2. Viewing and eliminating errors ................................................................ 34
9.3. Settings menu ...................................................................................... 35
9.4. Display menu ........................................................................................ 37
9.5. Info menu ............................................................................................ 38
9.6. Chrono menu ........................................................................................ 38
10. Processes .............................................................................................. 40
10.1. Start-up ............................................................................................. 40
10.2. Stop .................................................................................................. 41
10.3. Turn off the unit .................................................................................. 41
11. Filling the pellet reservoir ........................................................................ 42
12. Maintenance ................................................................................... 43
12.1. Removing the ash drawer from the burner .............................................. 43

12.2. Removing the bottom ash drawer .......................................................... 46
12.3. Forcing the burner plate clean ............................................................... 47
12.4. nnual cleaning ................................................................................... 49
12.5. Cleaning the glass ............................................................................... 54
13. larms / failures / recommendation list ............................................. 55
14. Maintenance plan and log ........................................................................ 57
15. Maintenance guide label .......................................................................... 61
16. Installation diagrams .............................................................................. 62
16.1. Simple connection only the central heating radiators ................................ 62
16.2. Connection to central heating radiators and sanitary water combined with
solar panel .................................................................................................. 63
16.3. Connection to central heating radiators, with inertia tank and installation
pump ......................................................................................................... 64
16.4. Combined heating connection, hot water with inertia tank and domestic hot
water ......................................................................................................... 65
17. Electrical connection diagram .................................................................. 66
18. Circulator pump operation ....................................................................... 67
19. nnexes ................................................................................................ 70
19.1. Function flow diagrams ........................................................................ 70
20. Life cycle of a pellet boiler ....................................................................... 72
21. Sustainability ......................................................................................... 72
22. Glossary ............................................................................................... 73
23. Warranty ............................................................................................... 75
23.1. Model-specific conditions ...................................................................... 75
23.2. Warranty general conditions .................................................................. 75

1
1. Solzaima
Solzaima's vision has always been to provide the cleanest, renewable and more cost-
effective energy. This is why we have been dedicated to manufacturing biomass
heating equipment and solutions for the past 45 years.
Due to its persistence and the unconditional support of its network of partners,
Solzaima is currently leader in the production of biomass heating systems, best
illustrated by its water heat recovery central heating units and its range of pellet stove
fires and boilers.
We deliver biomass heating units to approximately 20,000 homes every year. This
effectively demonstrates consumers' interest in more ecological and economic
solutions.
Solzaima was awarded the international Quality Certificate ISO 9001 and the
Environmental Certificate ISO 14001.

2
2. Package content
Solzaima ships the unit with the following components:
- Boiler model SZM PLUS;
- Leaflet for accessing the online instruction manual;
- Power cable.
The boiler is a bulky and heavy object, make sure it is as close as possible to the
installation site before unpacking. Plan where the boiler will be installed and how it
will be transported before you start. We recommend the use of a manual pallet truck
for transport.
To unpack the boiler, start by removing the screws that connect the wooden frame to
each other and to the pallet. Disassemble the frame into as many pieces as necessary
to remove it safely. Place the boards in a safe place, as nails and staples can be
dangerous. Carefully cut the plastic bag that surrounds the boiler and the polystyrene
boards, leaving the machine uncovered.
Figure 1 - Unpacking the boiler

3
The boiler is attached to the pallet with screwed parts that secure the feet at each
corner of the boiler. Remove the bolts to remove the boiler from the pallet.
Carefully lower the body of the pallet, making sure to do so on a protected floor area.
lthough the boiler has rubber levelling feet, there are protruding metal parts which
can easily damage the floor.
Figure 2 - Unpacking the boiler

4
3. Safety precautions
Solzaima will not assume any responsibility if the precautions, warnings and operating
standards of the equipment are not respected.
The equipment manufactured by Solzaima is simple to operate and special attention
has been given to its components in order to protect the user and the installer against
possible accidents.
Installation must only be carried out by authorised persons, who must provide the
purchaser with a declaration of conformity of the installation, and who will be fully
responsible for the definitive installation, and consequently, for the proper functioning
of the product.
This equipment must be intended for the use for which it was expressly
manufactured. The manufacturer's contractual or extra-contractual liability is excluded
if it causes injury to persons, animals or things, due to errors of installation,
maintenance or inappropriate use.
fter removing the packaging, verify the contents to check its integrity and
completeness. If the package contents do not correspond to the parts list specified on
item 2, please contact the entity from whom you purchased the unit.
ll the unit's components guarantee its operation and energy efficiency and should
only be replaced with original parts provided by an authorised technical assistance
centre.
The equipment must be serviced at least once a year, for this you should contact your
specialist installer.
This instruction manual is an integral part of the product. Make sure you are always
near the appliance.
For your safety, we recommend that:
• You fully read and understand the information detailed in this manual before
handling the pellet-run boiler, which is a biomass heating unit;
• You make sure the hydraulic circuit was correctly assembled and connected to the
water supply before turning on the pellet-run boiler;
• The boiler is not intended for use by children or persons with limited physical,
sensory or mental capabilities, nor by those lacking experience and knowledge, unless
under direct supervision or instruction;
• Do not touch the boiler when barefoot, nor when any part of your body is wet or
humid;

5
 Do not tamper with safety or adjustment features without the manufacturer's
authorization;
 Do not cover or reduce the size of the vents at the installation area;
 The pellet-run boiler requires good air supply to guarantee correct combustion; as
such, if the unit is kept in an air tight environment or is exposed to other existing
sources of air extraction, its correct functioning may be impeded;
 The existence of vents is a requisite for proper combustion;
 Do not leave the packing materials near children;
 When the unit is operating normally, the boiler door cannot be opened;
 void direct contact with parts of the unit that tend to become hot during
operation;
 Check the existence of any obstructions on the fume duct before turning on the
unit after a long period of inactivity;
 This pellet-run boiler is intended for residential use, within a protected
environment. Safety systems may intervene to shut down the boiler. If this occurs,
contact technical assistance. In any circumstances should you attempt to interfere
with the safety systems;
 The pellet-run boiler is a biomass heating unit equipped with an electric fume
extractor. The occurrence of any power failure during its use may prevent fume
extraction and the room will be filled with smoke. For this reason, you should have a
natural fume extraction system, like a chimney, available;
 If you intend to use your boiler when leaving it unattended or while you are away
from home, it is advised that you utilise the safety system specified above to
guarantee its safe functioning in the eventuality of a power failure;
 While in operation, NEVER disconnect the electric plug of your pellet-run boiler.
Seeing as the boiler's fume extractor is power-operated, disconnecting the plug would
prevent the extraction of combustion fumes;
 Your unit must be disconnected from the mains for servicing. Before doing this,
the unit must be totally cooled down (if operating before);
 Never touch the interior of the boiler without first disconnecting it from the power
mains;
 The maximum water temperature (set-point temperature) that the user can set for
the boiler is 80°C. In the event of the boiler reaching a temperature of 90ºC, it will
automatically switch off and activate a corresponding alarm 18 (excess water
temperature);

6
 The surface on which the boiler is installed must be made of non-flammable
material and be well levelled;
 The machine is not a condensing boiler, it must work in the conditions for which it
was designed;
 It is recommended to regularly check that the boiler is in good condition.
3.1. Advice in the event of a chimney fire
In case of fire, either in the equipment or in the smoke ducts, follow the instructions
below in the order given.
 Put the fire out without putting your life in danger;
 If you cannot put the fire out in one minute, call the fire brigade;
 Close the doors and windows or the room where the fire occurred;
 Turn off the electricity and the gas before leaving home;
- Once outside your home, provide information that will help put out the fire, such as:
location of the fire and materials that are burning.

7
. Technical specifications
Features
SZM A
PLUS
16
kW
SZM A
PLUS 24kW
SZM A
PLUS 32kW Units
Weight 413 413 425 kg
Height 1360 1360 1530 mm
Width 1123 1123 1123 mm
Depth 700 700 785 mm
Diameter of the fume discharge pipe 100 100 100 mm
Reservoir capacity 124 124 180 kg
Dimensions of the pellet tank inlet 235x350 235x350 235x430 mm
Maximum heating capacity 391 545 730 m³
Maximum thermal power 17,2 24,0 32,1 kW
Minimum thermal power 4,5 7,2 9 kW
Minimum fuel consumption 1,0 1,6 2,0 kg/h
Maximum fuel consumption 3,84 5,3 7,11 kg/h
Maximum autonomy (variable) 124 77,5 90 h
Minimum autonomy (variable) 32,3 23,4 25,3 h
Rated electric power 50 50 80 W
Reduced electric power 25 25 35 W
Electric power in start-up (<10 min) 410 410 410 W
Stand-by electric power 5,3 5,3 4,2 W
Rated voltage 230 230 230 V
Nominal frequency 50 50 50 Hz
Thermal yield at rated thermal power 91,0 91,3 91,7 %
Thermal yield at reduced thermal power 92,1 91,6 91,3 %
Max. gas temperature 104,1 112,9 123,4 ºC
Min. gas temperature 63,2 65,7 67,3 ºC
CO emissions at rated thermal power
(10%O
2
) 0,014 0,013 0,011 %
CO emissions at reduced thermal power
(10%O
2
) 0,035 0,036 0,036 %
Draught in the chimney 0,12 - 12 0,12 - 12 0,10 - 10 mbar-Pa
Unit water volume 50 50 78 l
Fume extractor sound level (EN 15036-1) 54 54 54 dB( )
Table 1 - Technical specifications
Tests performed using wood pellets with a heating capacity of 4,9 kWh/kg.
The above information was obtained during product homologation tests performed at independent
laboratories accredited for pellet unit tests.

8
.1. General vies
SZM PLUS 16 kW
Front Side Rear Top
Figure 3 A - Dimensions of the SZM A LUS 16 kW boiler
SZM PLUS 24 kW
Front Side Rear Top
Figure 3 B - Dimensions of the SZM A LUS 24 kW boiler
SZM PLUS 32 kW
Front Side Rear Top
Figure 3 C - Dimensions of the SZM A LUS 32 kW boiler

9
.2. Connections views
Figure 4 – ellet boilers connections SZM A LUS 16, 24 and 32 kW

10
5. Installation of the pellet-run boiler
5.1. Before installation
Before starting the installation, carry out the following actions:
 Check immediately on receipt that the delivered product is complete and in good
condition. ny defects should be reported before installing the appliance.
 Remove the user manual and hand it to the customer.
 Place the boiler in its final operating position and adjust the 6 feet by turning
them so that they all bear the same load and the machine is level.
Figure 5 - Unpacking the boiler
 Connect a duct of suitable diameter between the flue gas outlet and a flue for
exhausting fumes to the outside of the building (e.g., chimney) - see diagrams in
sections 6.1 and 6.2.
 Carrying out the hydraulic installation, see 6.3.
 Connect the 230V C supply cable to an earthed mains socket.
 The machine is fitted with a chrono-thermostat on the control panel. s an
option a conventional external programmer (not supplied) can be used to
automatically set the operating times of the appliance, see section 5.3.

11
5.2. Minimum distances
The following figure shows the minimum distances between the pellet boiler and
particularly inflammable surfaces.
On top of the boiler, it is necessary to maintain a minimum distance of 1 m from the
ceiling of the room especially if these contain inflammable material in their
composition.
We must respect this distance in order to have room to remove the
turbulators during maintenance.
The base on which the boiler rests cannot be made of combustible material (carpet,
wood, etc.) so there must always be adequate protection, as the boiler can exceed
60°C plus ambient temperature during operation.
Figure 6 - Minimum surface distances

12
Figure 7 - Minimum surface distances
Warning! Keep combustible and flammable materials at a safe distance.
5.3. Installation of room thermostat or chrono-thermostat
The boilers come prepared with a connector for connecting an ambient thermostat or
a chronothermostat on the back. The contact is voltage-free and will instruct the
boiler to switch on (contact closed) or off (contact open).
The thermostat must be placed on a wall more than 0,5 m from a window, must not
receive direct sunlight at any time of day and must not be in draughty areas.

13
5. . Installation kit silo enlargement 225L (optional)
For the 16 kW and 24 kW boilers a silo extension kit can be purchased which
increases the silo capacity according to Table 2.
Silo capacity*
Original With Kit
Capacity in kg 125 150
Capacity in litres 193 230
Table 2 - Silo capacity with extension
* Type of fuel = Pellet (EN 14961-2 1) diameter 6 mm/ L 10-30 mm. Data may vary depending on the type of
pellet used
This silo extension kit, article C 01010065, consists of a side cover (A), a silo side
(B), a front (C) and 16 Din 912 8.8 M4x12 Z/B screws (D).
Figure 8 - Components of the silo extension kit
For its installation you must first open the top cover and remove the two screws that
fix the side.
(A)
(C)
(
D
)
(
B
)

14
Figure 9 - Removal of the screws that fix the side of the boiler
Then open the boiler door to gain access to the screws that secure the front of the
unit and remove it, you must also loosen the screws on the display.
Figure 10 - Removal of the screws that fix the side of the boiler

15
fter removing the side and front of the equipment, remove all the screws that fix the
side, Din 7981 screws 4,2x9,5, and the front of the silo, Din 912 screws 8.8 M4x12.
Figure 11 - Removal of the screws from the side and front of the silo
You must then apply the silo lateral that is contemplated in the extension kit using the
screws that are sent along with the kit.
Figure 12 - Application of the new silo side

16
Put the front of the silo back on and then you should apply the side and front that
come with the kit.
Figure 13 - Silo front application
Figure 14 - Application of the side and front of the equipment