Spartherm Stovo S User manual

Installation and Operating Instructions for
Stoves Selection

PREAMBLE – QUALITY PHILOSOPHY
You have chosen to purchase a SPARTHERM stove – thank you for the trust
you have placed in us. In a world characterised by an abundance of choice
and mass production, our company name is associated with the principles:
“High technical quality combined with contemporary design and service for
the satisfaction of our customers and to achieve their recommendation.” In
combination with our specialist trade partners, we offer you first-class prod-
ucts that touch people on an emotional level, creating feelings of security and
comfort. To ensure this is achieved, we recommend that you carefully read
these operating instructions so that you can become quickly and comprehen-
sively acquainted with your stove. Besides information on using the stove,
these instructions also include important care and operating information for
your safety and to maintain the value of your stove, as well as providing you
with valuable tips and assistance.
In addition, we will demonstrate how you can operate your stove in an environ-
mentally friendly way. If you have any further questions, please contact your
specialist dealer.
Hoping you enjoy a beautiful fire at all times!
Your SPARTHERM Team
G.M. Rokossa

GB 3
OVERVIEW OF THE INSTALLATION AND OPERATING INSTRUCTIONS // STOVES SELECTION
1. General information 4
1.1 Tested quality 4
1.1.1 Scope of supply 4
1.1.2 Damage in transit 5
2. Installation Instructions 5
2.1 General Requirements for Installation 5
2.1.1 Installation Location 6
2.1.2 Multiple Usage 6
2.2. Assembly / Installation 6
2.2.1
Changing the Direction of the Flue Gas Connection 6
2.2.2 Combustion Air Supply 8
2.2.2.1 Room Air Dependent 8
2.2.2.2 Separate Combustion Air Supply 9
2.2.2.3 Room Air Sealed 9
2.2.3 Fire Precautions 10
2.2.4 Shut-off Device 14
2.2.5 Connecting Piece 14
2.2.6 Swivel Connector 14
2.2.7 Fitting the Storage Stones – Passo M 14
2.2.8 Installing the water-bearing components of
the SENSO M H2O / PIKO H2O 15
2.2.8.1 SENSO M H2O / PIKO H2O Connections 15
2.2.8.2 General Requirements for Installation 16
2.2.8.3 Thermal Discharge Safety Device 17
2.2.8.4 Thermal Pump Control 17
2.2.8.5 Electrical Connection 17
2.2.8.6 Connection to a Heating System 18
2.2.8.7 Load Unit 20
3. Operating Instructions 20
3.1. General Operating Information 20
3.2 Fire Precautions 21
3.3 Functioning of Swivel Connector 21
3.4 Rating Plate 22
3.5 Operating the SENSO M H2O / PIKO H2O Water
Heat Exchanger 22
4. Combustion 23
4.1 Lighting the Stove for the First Time 23
4.1.1 Combustion Air Control 24
4.2 Lighting Up / Burning 24
4.2.1 Adding More Wood 26
4.2.2 Hourly Wood Consumption 26
4.3 Controlling the Heat Output 26
4.4 Room Heating Capacity 26
4.5 Heating in the transitional period / unfavourable
weather conditions 27
5. Fuel 27
5.1 CO 2Neutrality 28
5.1.1 Storing Wood 28
5.2 Your Contribution to Environmental Protection 28
6. Cleaning and Maintenance 29
6.1 Cleaning the Fire Chamber / Cover Parts 29
6.2 Fire Chamber Lining 30
6.3 Chimney Fire 33
6.4 Maintenance 33
6.4.1 Maintenance of the SENSO M H2O / PIKO H2O
Water Heat Exchanger 33
6.4.2 Venting the SENSO M H2O / PIKO H2O Water
Heat Exchanger 33
6.5 Cleaning the SENSO M H2O / PIKO H2O Water
Heat Exchanger 34
6.6 SENSO S RLU Door Mechanism 35
7. Troubleshooting 36
7.1 Glass experiencing heavy, quick and irregular
sooting 36
7.2 Fire is difficult to light 36
7.3 Smoke leakage when adding wood to the fire 36
7.4
Fire burns too quickly / wood consumption is too high 36
7.5
Water heat exchanger in the SENSO M H2O / PIKO H2O 37
8. General warranty terms and conditions 38
8.1 Scope of application 38
8.2 General information 38
8.3 Warranty period 38
8.4 Requirement of Effectiveness for the Warranty 38
8.5 Warranty exclusions 38
8.6 Defect remediation / Repairs 39
8.7 Extension of Warranty 39
8.8 Spare of warranty 39
8.9 Liability 39
8.10 Note 39
9. Technical data 40
10. Commissioning Record 44

GB 4
1.1 TESTED QUALITY
OUR STOVES ARE TESTED TO DIN EN 13240. THE DECLARATION
OF PERFORMANCE MAY BE VIEWED AND IS OBTAINABLE FROM
WWW.SPARTHERM.COM
These stoves have a self-closing firebox door, and so the door is only ever
opened for operating purposes (e.g. cleaning the firebox or putting on more
wood). For safety reasons, tampering with the closing mechanism is not
permissible and will void the warranty and the operating permit. The war-
ranty and the operating permit will also be rendered void if the customer
makes any technical modifications to other parts of the stove.
1.1.1 SCOPE OF SUPPLY
• Vermiculite / fireclay firebox
• Primary and secondary air supply
• Pull-out ash box / ash pan and grate (not all models)
• Self-closing firebox door with high temperature-resistant ceramic glass
viewing pane
• Protective glove*
• Rating plate („3.4 Rating Plate“ on page 22)
• Delivered pre-assembled in disposable cardboard packaging
• for ease of transport
• Storage stones (only CUBO M, PIKO M, SENSO L (optional), PASSO M,
STOVO M)
• Pump thermostat, thermal discharge safety device ¾", vent valve (only
SENSO M H2O, PIKO H2O)
• Integral cleaning system with operating lever (only PIKO H2O)
1. GENERAL INFORMATION
Before your stove is assembled and installed you should meet with the mas-
ter chimney sweep responsible for such matters in your area. He will advise
you on the building regulations and suitability of your chimney and will carry
out the acceptance test on your stove. Calculation of the dimensions of the
chimney is based on DIN EN 13384 using the set of measured values given
in this manual („9. Technical data“ on page 40).
Important for young children, the elderly or the frail: As with all other heating
appliances, a guard should be fitted to protect the above persons because
both the glass door and the stove cover panels can become very hot in use.
Risk of burns!
Never leave a stove unsupervised when it is lit or when the fire has just
gone out. As a basic rule, the stove should not be left unattended for long
periods of time when lit.
The protective glove supplied is designed only for protection
from heat when operating the control handle and the cold
hand. The glove is not fireproof.
When installing and operating your stove and when connecting it to the
chimney you must ensure that you comply with national and European
standards, the relevant country-specific and local guidelines and regula-
tions and, in Germany, the relevant Heating Regulation (FeuVO) of the state
where you live.
The stove should always be operated with the door closed. Modify-
ing the closing system is not permissible.
*Caution: The protective glove supplied is designed only for protection from
heat. It is not fireproof.

GB
GB 5
1.1.2 DAMAGE IN TRANSIT
Please inspect the goods immediately upon delivery (visual inspection).
Any damage should be noted on your delivery note. You should then inform
your stove fitter. Protect the visible parts of the stove from dirt and dam-
age during installation. Only approved and sufficiently strong handling aids
should be used to transport your stove.
The following points must be noted to ensure safe transport without any
problems:
• The stove should always be transported in the upright position or tilted
slightly backwards.
• Hand trucks used as handling aids must load the stove from the rear
only.
2. INSTALLATION INSTRUCTIONS
The assembly and installation of your stove should be carried out
by a specialist. Before your stove is assembled and installed you
should meet with the master chimney sweep responsible for such
matters in your area to discuss the suitability of your chimney and
the installation location and to clarify any other matters.
2.1 GENERAL REQUIREMENTS FOR INSTALLATION
All relevant national and European standards and local regulations
(DIN, DIN EN, state building regulations, heating system regula-
tions, etc.) must be noted and observed when installing, connecting
up and operating the stove. Selected relevant regulations are listed
below. This list does not claim to be complete.
FeuVo: Heating Regulation of the particular Federal State
LBO: State building regulations or fire protection regulations of
VKF: VKF (Switzerland)
LRV: (Switzerland)
1. BlmschV: First Implementing Ordinance to the German Federal Immission
Control Act
TROL: Technical Rules of the Stove and
Hot Air Heating System Trade (ZVSHK)
DIN 1298 / EN 1856: Connecting Pieces for Fireplaces
DIN EN 13240: Stoves/Solid Fuel Room Heaters
DIN 18896: Solid Fuel Fireplaces. Technical Rules for Installation and
Operation
DIN EN 13384: Flue System Calculating Methods
DIN 18160-1/2: Flue Systems/Domestic Chimneys
DIN 4751 / DIN EN 12828: Heating Systems in Buildings –
Planning Water Heating Systems
VDI 2035: Water Preparation for Heating Systems
Art. 15a: B-VG (Austria)
Fireplaces should only be installed in rooms and at locations where the
position, structural conditions and type of use will not create any hazards.
The floor area of the room where the fireplace is installed must be of such
a type and size that it can be correctly operated in accordance with the
instructions.

GB 6
2.2. ASSEMBLY / INSTALLATION
The floor on which your stove is installed must have sufficient load-bearing
capacity. Please note the overall weight (refer to section „9. Technical data“
on page 40). If necessary, load-bearing capacity must be ensured by
placing the stove on top of a slab of sufficient thickness for weight distribu-
tion purposes.
When selecting the installation location please also note the necessary fire
precautions with regard to the floor. („2.2.3 Fire Precautions“ on page 10).
Stability
Tall stoves with storage stones on top are top-heavy and must be secured
against accidental toppling.
Appropriate measures may therefore need to be taken to ensure the stability
of the CUBO/PIKO M models. SPARTHERM can supply an optional stability
aid which enables the stove to be securely fastened to the floor on which
it is installed. This is available for the PIKO/CUBO ranges under part no.
1018625 (rotatable) / 1018626 (non-rotatable).
Stand the stove on the floor and level it horizontally, observing the safety
distances (refer to section „2.2.3 Fire Precautions“ on page 10). The legs
are height-adjustable.
2.2.1 CHANGING THE DIRECTION OF THE FLUE GAS
CONNECTION
The stove is supplied ready for use with a top flue gas connection. Alterna-
tively, a rear, side or corner flue connection is possible, depending on the
model. To change the flue connection position, the following steps should
be carried out:
2.1.1 INSTALLATION LOCATION
Your stove must not be installed:
1. In stairwells and landings, except in residential buildings with no more
than two flats.
2. In corridors accessible to the public
3. In garages.
4. In rooms or flats that are vented by ventilating systems or hot air sys-
tems using blowers, unless the safe operation of the stove is ensured.
5. In rooms where highly flammable or explosive substances or mixtures
are processed, stored or manufactured in such quantities that ignition or
explosion would be hazardous.
Room air sealed stoves may be installed in rooms, flats or units of com-
parable size from which air is extracted with the aid of blowers, such as
ventilation systems or hot air heating systems, provided that the negative
pressure generated by this equipment does not exceed 8 Pa.
2.1.2 MULTIPLE USAGE
Multiple usage of the chimney in accordance with DIN 18160 is possible
as the stove has a self-closing firebox door (A1). Note that all fireplaces
connected to the same chimney must also be approved for multiple usage.
In the case of room air sealed stoves:
Multiple usage of the chimney is not permissible.

GB
GB 7
Changing the flue gas connection direction from top to rear, taking
the Senso S as an example
Changing installation from top to rear
Carefully remove the top plate (A) (Fig. 1) from the stove and set it aside in a
safe place. When removing the top plate take care that the blanking plate on
top (B) (Fig. 1) does not fall off and get damaged. Depending on the model,
the stove plate can either be raised and lifted off, or it may first have to be
released by sliding it forward, keeping it level (Stovo model range).
In the case of units with storage stones on top (e.g. CUBO/PIKO M (Fig. 2)
or a convection air controller (Fig. 3) these components should be removed.
(„2.2.7 Fitting the Storage Stones – Passo M“ on page 14).
Once the top plate has been removed, the flue gas pipe connection (C)
screwed on to the stove body (Fig. 4) is visible. Undo the hexagon head bolts
on the inside to remove it (13 mm spanner). Now remove the blanking plate
(D) (Fig. 5) on the rear cover panel to allow the flue pipe to pass through.
To do this, either break out the perforations or undo two fastening screws,
depending on the model.
The blanking plate which is now visible (E) (Fig. 6) must be removed by
undoing the bolts on the inside (13 mm spanner) and replaced by the flue
gas connection (C) removed previously (Fig. 4). Fit the blanking plate which
you removed (E) to the top flue gas outlet to seal it off. (Fig. 7) (bolts, 13
mm spanner)
Make sure that the seals are correctly positioned underneath the blanking
plate and the flue gas connection and that they make a tight seal. After fit-
ting the blanking plate, install the optional storage elements and convection
air regulator in reverse order and place the cover panels in position. (Fig. 8)
Note: The assembly sequence may vary according to the stove model.
Special note re the PIKO H20 model
As well as a side and top flue gas outlet, the PIKO H20 model also offers the
option of a corner flue gas connection. If the installation position of the PIKO
H2O stove is already known at the planning stage, the stove can be ordered
with the flue gas connection fitted accordingly from the factory. In order to
alter the position of the flue gas connection on site, proceed as follows:
Changing installation from top to rear or side
The flue gas pipe can be connected at the rear in three different positions.
A
B
C
D
EC
E
13
13
A
BC
D
E
C
E
13
13
A
BC
D
EC
E
13
13
A
BC
D
EC
E
13
13
A
BC
D
EC
E
13
13
A
BC
D
EC
E
13
13
A
B
C
D
EC
E
13
13
A
BC
D
EC
E
13
13
Fig. 1
Fig. 5
Fig. 2
Fig. 6
Fig. 3
Fig. 7
Fig. 4
Fig. 8
Side exit at left
A
BC13
DE
Central exit
A
BC13
DE
Side exit at right
A
BC13
DE

GB 8
Carefully remove the top plate (A) (Fig. 9) from the stove and set it aside in
a safe place. When removing the top plate take care that the blanking plate
on top (B) (Fig. 10) does not fall off and get damaged.
Once the top plate has been removed, the flue gas pipe connection (C)
screwed on to the stove body (Fig. 10) is visible. Undo the hexagon head
bolts on the inside to remove it (13 mm spanner). Now remove the rear cover
plate (D) (Fig. 10) by undoing the screws. After removing the cover plate,
a blind connection for the flue gas outlet can be seen at the rear/side. (E)
(Fig. 11) Undo it.
Now fit the flue gas pipe connection in the desired position, either at the
right/left side or in the rear centre. A separate pipe connection is packed
with the stove for use if making a right/left side connection (Fig. 13). The
top pipe connection is used if making a rear connection. Make sure that the
cord seal underneath is correctly positioned and that it makes a tight seal.
The blanking plate which was previously removed (E) should be screwed on
as shown in Fig. 12 to seal off the top flue gas outlet.
Finally, close the open sections of cover panel at the rear of the stove using
the cover plates supplied, and place the top plate in position (Fig. 14).
2.2.2 COMBUSTION AIR SUPPLY
The combustion air supply can be provided in one of two ways, either ‘room
air dependent’ as described in section „2.2.2.1 Room Air Dependent“ on
page 8 or ‘room air sealed’ as described in section „2.2.2.3 Room Air
Sealed“ on page 9.
2.2.2.1 ROOM AIR DEPENDENT
Your stove takes the air it needs for combustion from the room where it is
installed (room air dependent operation). An adequate supply of fresh air
must be ensured in the room where the stove is installed (for further details
refer to the heating systems regulations for the country concerned, DIN
18896, the technical rules, etc.) The installer and the operator of the stove
should check the fresh air supply. An adequate air supply for combustion
must be ensured when several fireplaces are operated in one room or in
adjoining rooms. If the windows and doors are sealed (for example, for
A
B
C13
DE
Fig. 9
A
BC13
DE
Fig. 12
A
B
C13
D
E
Fig.10
A
BC13
DE
Fig. 13
A
BC13
D
E
Fig. 11
A
BC13
DE
Fig. 14

GB
GB 9
energy-saving reasons) it may be the case that an adequate fresh air supply
cannot be guaranteed. The stove draught may be adversely affected. This
can be detrimental to your health and also, in some cases, to your safety. If
necessary, an additional air supply should be provided by fitting an air inlet
near the stove or by fitting a combustion air intake pipe which connects
with the external air (see „2.2.2.2 Separate Combustion Air Supply“ on
page 9) or with a well ventilated room (not the room where the stove
is installed). In particular, it must always be ensured that the necessary
combustion air intakes remain operational when the fireplace is in use.
Operating a ventilating system at the same time, e.g. an extractor hood or
bathroom fan, in the same room or in an adjoining room can adversely affect
the operation of the stove (even causing smoke or flue gas to leak out into
the room, despite the firebox door being closed). Ventilating devices must
therefore not be operated at the same time as the stove unless suitable
measures are taken to maintain the air supply to the stove. („2.2.2.3 Room
Air Sealed“ on page 9).
2.2.2.2 SEPARATE COMBUSTION AIR SUPPLY
It is possible to provide the stove with a separate combustion air supply.
The separate combustion air connection can be connected to the rear of the
unit or to the bottom of the unit. The connecting piece is pre-assembled and
the cover panels should be opened up as necessary. If a pipe connection is
attached to the combustion air coupling, the combustion air can be drawn
into the stove from outside or from other rooms such as the basement. When
connecting the stove to a combustion air pipe, the requirements of TROL
(technical rules), DIN 18896, etc. should be observed and applied.
In particular, care should be taken that the dimensions of the pipes
are adequate. If using a swivel connector, a permanently flexible
connection must be made. The rotating action must not be restricted.
Combustion air intakes and pipes must not be obstructed or closed unless special
safety devices are fitted to ensure that the stove can only be operated when the
closing system is open. The cross-section must not be reduced by means of an
obstructor or grille. This measure is not necessary with balanced flue systems.
If the combustion air pipe has to be routed out of the building, a shut-off device
must be fitted. The position of the shut-off device must be obvious from the out-
side of the connecting pipe. In this design version the pipe should be insulated,
as condensate may form. Also, when fitting the pipe it should be ensured that
no water or other substances can enter the stove and that any condensate can
drain away. According to the relevant provisions, combustion air ducts that bridge
firewalls in buildings with more than two full storeys must be constructed such
that fire and smoke cannot spread to other storeys or fire lobbies. The national
and local fire precautions for the place of installation must be observed.
2.2.2.3 ROOM AIR SEALED
Room air sealed stoves have been developed for use in conjunction with home
ventilation systems for a negative pressure range of up to 8 Pa in the room where
the stove is installed and can be operated without any additional safety precau-
tions. In room air sealed operation, the air supply for combustion must be led into
the unit from an external source via airtight pipes, or via a balanced flue system.
The combustion air duct must be permanently sealed tightly to the combustion air
connecting piece (rear / side or bottom connection) on the stove.
When connecting a room air sealed stove to the combustion air pipe, the require-
ments of TROL (technical rules), DIN 18896, etc. should be observed and applied.
In particular, ensure the dimensions are adequate.
The national and local fire precautions for the place of installation must be
observed. Please ensure that the pipework is permanently leaktight.

GB 10
2.2.3 FIRE PRECAUTIONS
General Information about Fire Precautions
Stoves generate heat and are subject to regulations and essential fire pre-
cautions. The fire precautions and minimum distances should be borne in
mind when selecting the installation location for the stove. A minimum
distance of 5 cm from the rear wall must always be maintained.
Greater distances should be allowed for reasons of safety and fire
prevention in the case of walls that need to be protected or combus-
tible building components.
The table that follows (see page 12) shows the distances that must be
maintained according to the type of stove and the nature of the walls on
site. Use the drawings (Figs. 17-21) to help you determine your particular
installation situation and note the distances that must be maintained.
Note the fire precautions when installing the stove. Ask your local
chimney sweep for advice.
• Their structure and materials enable mounting walls that are not com-
bustible and not in need of protection to be permanently exposed to
temperatures above 85°C.
• Mounting walls that are combustible or need to be protected (e.g.
stud partition construction) must be protected from temperatures above
85°C.
The mounting walls should be assessed before installing the stove. If the
nature of the mounting wall cannot be identified with certainty, a specialist
(such as the chimney sweep) should be consulted.
• According to DIN 4102-1, wallpaper used as a wall covering is not
considered a combustible building component and does not require
any special fire precautions. Please bear in mind that the structure
underneath the wallpaper (e.g. stud partition construction) may very
possibly be combustible or in need of protection, and appropriate pre-
cautions should be taken.
• Please note that the minimum distances indicated from rear wall and
side walls need to be adapted for rotating stoves.
• It is important to observe the minimum distance from the chimney
connecting piece to combustible building components (refer to section
„2.2.5 Connecting Piece“ on page 14).
• There must be no combustible objects within a radius of 50 cm above
the fireplace.
Floor coverings near the stove
Floors made from combustible materials in front of the firebox door must be
protected by a covering of non-combustible materials. The covering should
extend at least 50 cm in front of the stove and at least 30 cm at each side
(Figs. 17-21 C+D) (measured from the firebox door or viewing pane).
There must be no combustible building components, furniture, curtains or
decorations within the radiant area of the firebox door or viewing pane. That
distance can be reduced to 400 mm if a fire screen ventilated on both sides
is placed between the fireplace and any combustible objects.
Minimum distances from nearby building components
The distances indicated in the table (see page 12) must be observed,
according to your stove’s window arrangement (see sketches below) and the
nature of the mounting walls.
Here,
• Distance A is the minimum distance from the side wall of the stove to
the mounting wall
• Distance B is the minimum distance from the rear wall of the stove to
the mounting wall
• Distance C is the radiant area in front of the stove window(s).

GB
GB 11
Special note regarding the minimum distance at the side
The minimum side distance (Fig. 15 (A) ) describes the minimum distance
from the stove to the side mounting wall. It applies from the rear mounting
wall to the edge of the radiant area (E) of the front window.
In the case of stoves with a curved front window or wide radiant area,
the minimum distance from the wall (A) must be adjusted by the extended
radiant area.
Determining the radiant area
To establish the radiant area of the stove, place a measuring aid (folding
rule or tape measure) against the front window and, continuing past the
side door pillar, gauge the centre of the stove (Fig. 16). Within the resulting
angle and side distance A1 there must be no combustible building compo-
nents or objects not needing protection from heat.
Before your stove is lit for the first time it must undergo acceptance by the
local chimney sweep. He can also advise you on the installation conditions
before your stove is fitted and give you instructions on the correct installa-
tion of your stove.
brennbar
(z.B.Sessel)
E
A
Strahlungsbereich
Bodenbelag D
Fig 15
brennbar
(z.B.Sessel)
A1
CMeterstab
Bodenbelag D
Strahlungsbereich
Fig. 16
Flooring
Combustible
(e.g. armchair) Combustible
(e.g. armchair)
Radiant area
Folding rule
Radiant area
Flooring

GB 12
Stove Distance from side wall Distance from rear wall Distance within radiant area of window(s) Dimensions of fireproof flooring
A (cm) B (cm) C (cm) D (cm)
Combustible
Protection not needed Combustible Protection not needed Combustible Protection not needed Length × width Radius (of round floor covering)
Stovo
Stovo S 31 20 16 5100 80 50 x 30 50
Stovo M 31 20 16 5100 80 50 x 30 50
Stovo L 56 25 13 5100 80 50 x 30 50
Sino
Sino L 10 10 8 5 80 80 50 x 30 50
Senso
Senso S / Senso S RLU 47 20 10* 590 80 50 x 30 50
Senso M H2O10 10 10 580 80 50 x 30 50
Senso L 47 20 10 5110 80 50 x 30 50
Passo
Passo XS 15 15 5 5 80 80 50 x 30 50
Passo S 10 10 10 580 80 50 x 30 50
Passo M 25 20 10 580 80 50 x 30 50
Passo L 10 10 10 580 80 50 x 30 50
Trias
Trias L 10 10 13 580 80 50 x 30 50
Piko
Piko S / Piko S RLU 10 10 10 580 80 50 x 30 50
Piko M / Piko M RLU 10 10 10 580 80 50 x 30 50
Piko L / Piko L RLU 10 10 10 580 80 50 x 30 50
Piko H2O10 10 10 580 80 50 x 30 50
Cubo
Cubo S / Cubo S RLU 10 10 10 580 80 50 x 30 50
Cubo M / Cubo M RLU 10 10 10 580 80 50 x 30 50
Cubo L / Cubo L RLU 10 10 10 580 80 50 x 30 50
Piu
Piu L 15 15 15 580 80 50 x 30 50
* The distance applies only in conjunction with a fire screen on the top plate, mounted behind the vertical flue gas pipe.

GB
GB 13
Bodenbelag
brennbar
(z.B.Sessel)
Strahlungsbereich
C
B
A
A1
D
Strahlungsbereich
A
B
C
Bodenbelag D
brennbar
(z.B.Sessel)
Bodenbelag
Strahlungsbereich
Strahlungs-
bereich
A
B
C
D
brennbar
(z.B.Sessel)
C
Strahlungsbereich
ABodenbelag
C
D
brennbar
(z.B.Sessel)
Bodenbelag
C
Strahlungsbereich
A
D
B
brennbar
(z.B.Sessel)
Fig. 17Wide radiant area Fig. 18Corner window Fig. 19Front and side windows
Fig. 21Front window, straightFig. 20Front window, rotating
Flooring
Flooring
Flooring
Flooring
Flooring
Combustible
(e.g.
armchair)
Combustible
(e.g.
armchair)
Combustible
(e.g.
armchair)
Combustible
(e.g.
armchair)
Combustible
(e.g.
armchair)
Radiant area
Radiant area Radiant area
Radiant area
Radiant area
Radiant
area

GB 14
2.2.4 SHUT-OFF DEVICE
Flue systems should be constructed in accordance with the Technical Rules
of the Stove and Hot Air Heating System Trade (TROL). It is permissible for
stoves to have a shut-off device in the flue system. This device must not
interfere with inspection and cleaning of connecting pieces and it must not
be of self-closing design. The status of the shut-off device must be obvious
from the outside, e.g. from the position of the control handle. Such devices
may only be fitted in the flue gas manifold, flue gas stack or connecting piece.
2.2.5 CONNECTING PIECE
Your stove is connected to the chimney by 150 mm / 160 mm diameter
connecting pieces made from steel sheet at least 2 mm thick. These must
comply with DIN 1298 or DIN EN 1856-2 and they must be connected to
the chimney in accordance with DIN 18160 or the regulations that apply in
the country concerned. It is important to ensure that the flue gas pipe takes
the shortest possible route upwards towards the chimney. The number of
bends in the flue gas pipe should be kept to a minimum. The stability of the
flue gas pipe must be ensured. If necessary, it should be fastened in place
with clips. If the flue gas pipe passes through a combustible wall or if there
are combustible building components nearby, the pipe should be insulated
in accordance with the regulations. The connecting piping must always be
installed in such a way that it can be cleaned at any time. This should be
ensured by providing an appropriate number of cleaning apertures. If the
stove is designed to rotate, the connecting piping should be installed in
such a way that the fastening is not compromised. The flue gas pipe must
not turn when the stove turns. Depending on the information provided by the
manufacturer, the minimum distance from the chimney connecting piece to
combustible building components may increase the distance between the
stove and combustible building components. The minimum distances from
combustible components stated in this Manual refer to the stove itself, and
should be adapted if necessary (refer to section „2.2.3 Fire Precautions“
on page 10).
2.2.6 SWIVEL CONNECTOR
A swivel connector can only be fitted in the case of a top flue gas con-
nection, and must be specified at the time of ordering. The stove can thus
be rotated 120°/180°, i.e. 60°/90° to the left and the same to the right
(section „3.3 Functioning of Swivel Connector“ on page 21).
2.2.7 FITTING THE STORAGE STONES – PASSO M
For weight reasons, the storage stones are assembled on site. To fit the
storage stones, first remove the cover and the heat output control panel.
Then place the storage stones in position as shown.
A=Remove
B=Put in place
C=Fit

GB
GB 15
FITTING THE STORAGE STONES (CUBO M / PIKO M
WITH WOOD STORAGE COMPARTMENT)
2.2.8 INSTALLING THE WATER-BEARING
COMPONENTS OF THE SENSO M H2O / PIKO H2O
Installation of the water-bearing parts of the system, including fitting the
necessary safety devices, temperature sensors and similar components,
should always be carried out by a specialist contractor. The SENSO M H2O
/ PIKO H2O should be installed so that all water-bearing components are
always accessible and can be inspected at any time.
The stove and all associated thermowells, connections, structural parts
and piping must be hydraulic pressure tested and checked for leaks before
commissioning.
2.2.8.1 SENSO M H2O / PIKO H2O CONNECTIONS
The connections are located on the rear/inside (SENSO M H2O) and on the
underside (PIKO H2O) (see Figs. A and B).
The connections are fitted with protective caps for transport. These should
be removed during installation. The connections are clearly labelled and
should not be used other than as indicated. In particular, the integral safety
device (safety heat exchanger) should not be used to heat water.
To facilitate installation of piping, etc., when making a connection through
the floor, an installation template can be downloaded from the dealer
login section of our home page at www.spartherm.com. The installation
template is only valid in conjunction with the Flex connection kit.
Alternatively, we can supply a 1:1 scale installation template on request.
The Flex connection kit can be ordered from us for straightforward, speedy
connection of the pipework through the floor and the internal connections.
A=Remove
B=Put front stones in place
C=Put inside stones in place
D= Put cover stone in place
(with handle)

GB 16
2.2.8.2 GENERAL REQUIREMENTS FOR
INSTALLATION
The SENSO M H2O / PIKO H2O should only be installed in systems with a
thermostatic safety device to DIN 4751 or DIN EN 12828. The connec-
tions to the heating system should always be made such that they can be
detached (e.g. screwed connection).
A type-tested safety valve (coded H) with a threshold pressure of max. 3.0
bar should be fitted in the flow pipe immediately next to the SENSO M H2O
/ PIKO H2O. No shut-off devices may be integrated into the system between
the safety valve and the SENSO M H2O / PIKO H2O as that could disable the
safety valve. Also, all necessary safety devices should be integrated into the
overall system in such a way that safe operation is ensured. A dedicated
safety valve must be fitted even if another safety valve is present elsewhere
in the overall system (note TRD 721).
The installation and operating instructions for the heating components /
additional components included in the system must be read and observed
when installing the stove.
137
232
292
135
218
232
292
500
500
383
218
A=Safety heat exchanger ‘drain’ ½" IG
B=Safety heat exchanger ‘inlet’ ½" IG
C=Return ¾" IG
D=Flow ¾" IG
E= Vent valve 3/8"
Fig. B – Connection PIKO H2O / Bottom view
104
138
170
234
273
295
334
A=Return ¾"
B = Thermal discharge device
inlet ½"
C=Flow ¾"
D = Thermal discharge
device drain ½"
Fig. A – Connection SENSO M H2O

GB
GB 17
2.2.8.3 THERMAL DISCHARGE SAFETY DEVICE
As the SENSO M H2O / PIKO H2O heating system cannot be quickly switched off
automatically, the appliances must be fitted with a thermal discharge safety
device according to DIN 4751 Part 2 or DIN EN 12828. A safety device (safety
heat exchanger) to prevent overheating is integrated into the SENSO M H2O /
PIKO H2O for this purpose. This safety device must not be used to heat water.
The thermal discharge safety device is not pre-assembled on the unit. It
has been packed inside the fire chamber to protect it during transport and
installation. It should be fitted to the labelled connection during installation.
After that, the capillary and adapter should be screwed onto the thermal
discharge safety device. This has been tested and approved for a minimum
water throughput of 900 kg/h.
The following points should be noted during installation to ensure that the
safety device will operate correctly.
• A flow pressure of min. 2 bar must be available at the cold water inlet.
That pressure must be guaranteed at all times. It is not permissible to
operate the device on a domestic water supply which is dependent on
the mains pressure.
• A minimum water flow of approx. 900 kg/h must be ensured. It must not
be possible to shut off this supply.
All safety-related components must be integrated into the system in such a
way that their function and leaktightness can be checked at any time. The
thermal discharge safety device water drain should be designed in such a
way that it can be inspected at any time (e.g., via a drain with siphon trap).
The cold water pipe should be flushed through before first using the system.
This will flush out any dirt that could interfere with the closing of the thermal
discharge safety device. The instructions and information provided by the
manufacturer of the thermal discharge safety device must be observed.
2.2.8.4 THERMAL PUMP CONTROL
A thermostat is located in the bottom compartment for optimum control of
the circulating pump. This ensures that the circulating pump will start up
only when the water reaches a suitable temperature (> 60°C). It is possible
for the pump to be controlled via the boiler control system or similar devices
if it can be ensured that the the pump will switch on at a temperature of
between 60°C and 68°C. The maximum contact rating of the thermal pump
control is 250V~/10(2.5) A with an AC system.
The thermostat is factory-set to a temperature of approx. 62°C. That deter-
mines the temperature at which the load unit circulating pump switches on
and off when the temperature in the water heat exchanger of the SENSO M
H2O / PIKO H2O reaches or falls below the necessary level, respectively. As
an option, the temperature can be adjusted by the installation contractor if
circumstances demand. This is done either by adjusting the circular disc or
by removing the lower, round cover (SENSO M H2O – D=10 mm) or the top
cover (PIKO H2O), depending on the thermostat version. The temperature
range can be altered after removing the cover.
Please note: At water temperatures below 60°C there is a greater risk of
falling below the dew point. This can cause tarry soot to form. Also, more
frequent cleaning becomes necessary. We therefore recommend that the
switch-on temperatures should be set no lower than 60°C and no higher
than 68°C.
2.2.8.5 ELECTRICAL CONNECTION
The entire electrical installation of the individual components of the heating
system must be carried out by an authorised specialist contractor. All work
must be carried out in accordance with VDE regulations (e.g., VDE 0105,
VDE 0116, VDE 0100, etc.) and the local electricity supplier’s technical
connection conditions.

GB 18
The only work to be done on the SENSO M H2O / PIKO H2O is the electrical
installation of the thermostat to the pump of the load unit („2.2.8.7 Load
Unit“ on page 20) and to the mains (see illustration). The temperature-
resistant connecting lead is approx. 3.0 m long and is already connected up
inside the thermostat.
The functioning of the thermostatic switch should be checked using hot
water (e.g. from a kettle) and a thermometer. The covering will need to be
removed to do this.
2.2.8.6 CONNECTION TO A HEATING SYSTEM
Please note: The entire heating system should be planned in detail in
accordance with the relevant rules of the art and the safety standards
before installing the SENSO M H2O / PIKO H2O as part of a heating sys-
tem. The planning consultant or installation contractor is responsible for
the correct design of the pumps, fittings, piping and buffer tank used and
the safety components. We recommend minimum nominal dimensions for
heating pipes of:
Copper pipe, 22 x1.0 mm or steel pipe, 3/4".
For cold water pipes a nominal pipe size (copper pipe) of 15 × 1.0 and a
flow pressure of 2.0 bar are sufficient for safe operation.
However, the pipe dimensions should be determined by the specialist firm,
taking local conditions into account.
The SENSO M H2O/ PIKO H2O can be connected into a heating system as
shown in the diagram on page 19.
A buffer tank must be included. The buffer tank volume should be calculated
according to BImSchV 1. This specifies that 55 litres of buffer tank volume
must be provided as a minimum per kW water output.
SENSO M H2O
In the case of the Senso M H2O that is: 5.0 kW x 55 litres/kW = 275 litres.
PIKO H2O
In the case of the Piko H2O that is: 4.6 kW x 55 litres/kW = 253 litres.
As these are not standard sizes available on the market, the next biggest
buffer tank with a capacity of 300/500 litres should be selected.
°C
C21
L' NPE
PE
N
L
E
E
F
F
A
B
D
C
°C
C21
L' NPE
PE
N
L
E
E
F
F
A
B
D
C
A = The green-and-yellow wire is wired to the
protective conductor (earth) (PE) of the
mains cable.
B = Thermostat for pump control, with approx.
3.0 m connecting lead 2 x 0.75 mm2
C=Load unit (circulating pump)
D = Terminal 1 not needed
E=Phase (L) brown lead
F=Switched phase (L’) blue lead
Blue
Green-and
-yellow
Brown

GB
GB 19
The following sample calculation may be helpful for dimensioning the buffer
tank.
The following assumptions have been made:
Senso M H2OPiko H2O
• Buffer tank size: 750 litres
(approx. 750 kg water)
• Initial water temperature in
buffer tank: 30°C
• Final water temperature in buffer
tank: 60°C
• Temperature differential 30°C
(corresponds to 30 K)
• No heat is drawn from the tank
while it is being heated by the
SENSO M H2O
• Buffer tank size: 500 litres (500
kg water)
• Initial water temperature in
buffer tank: 40 °C
• Final water temperature in buffer
tank: 70 °C
• Temperature differential 30°C
(corresponds to 30 K)
• No heat is drawn from the tank
while it is being heated by the
PIKO H2O
Q = cp×m×∆t
Q = 4,187 kJ × 750kg×30K
kg×K
Q = 94207 kJ
Q = cp×m×∆t
Q = 4,187 kJ × 500kg×30K
kg×K
Q = 62805 kJ
ϑ
E
F
G
H
KLMN
P
O
QR
S
I
J
B
T
C
D
A
A = Temperature sensor for thermal discharge safety device
B = Temperature sensor for thermostatic switch ½'' IG
C = Return ¾'' IG
D = Flow ¾'' IG
E = Safety valve 3 bar
F = Bleed valve
G = Pump thermostatic switch
H = Load unit
I = Connection to heating system
J = Buffer tank
K = Load unit
L = Circulating pump
M = Filling and emptying fitting
N = Expansion tank
O = Thermal discharge safety device
P = Open drain, e.g. into wastewater system
Q = Safety heat exchanger ‘drain’ ½'' IG
R = Safety heat exchanger ‘inlet’ ½'' IG
S = Bleed valve 3/8¨
T= Thermal discharge safety device

GB 20
So: to heat 750 litres of water in a
tank from an assumed 30°C to 60°C
requires a theoretical heat quan-
tity of 94207 kJ (disregarding any
losses or heat drawn within the sys-
tem). That heat quantity corresponds
to approx. 26.2 kWh.
Assuming that the SENSO M H2O has
an average output of approx. 5.0 kW
it will take about 5¼ hours to heat
up the tankful of 750 litres of water.
This calculation is based on heating
up the entire volume in the tank
uniformly.
So: to heat 500 litres of water in a
tank from an assumed 40°C to 70°C
requires a theoretical heat quan-
tity of 62805 kJ (disregarding any
losses or heat drawn within the sys-
tem). That heat quantity corresponds
to approx. 17.5 kWh.
Assuming that the PIKO H2O has an
average output of approx. 4.6 kW it
will take about 3.8 hours to heat up
the tankful of 500 litres of water.
This calculation is based on heat-
ing up the entire volume in the tank
uniformly.
In an efficiently designed heating system the hot water is stored in layers
in the buffer tank, e.g. in a stratified storage system. That way, hot water is
available after heating up for only a short time and heat is available for use
shortly after circulation starts in the SENSO M H2O / PIKO H2O. Only surplus
energy not needed for heating is then stored in the buffer tank.
On very cold winter days the SENSO M H2O / PIKO H2O may be in operation
for about 12 hours. The quantity of heat thus produced in the water system
then corresponds theoretically to 60 kWh / 55 kWh. That quantity of heat
would be sufficient to heat approx. 1,700 litres (from 30°C to 60°C) / 1,575
litres (from 40°C to 70°C). As a rule, though, heat is always drawn off in
such a situation and so overheating of the buffer tank (> 90°C) is not likely
to occur, even at lower volumes.
2.2.8.7 LOAD UNIT
The SENSO M H2O / PIKO H2O must be operated with a load unit. When in
operation, the flow temperature should be higher than 65°C and the return
temperature should be at least 60°C. To ensure that these temperatures
are reached, a circulating pump should be installed so that it only starts
up when a temperature of 62°C has been reached. A controlled load unit
should always be fitted to reduce the risk of dropping below the dew point.
We will not be held liable and we offer no warranty in respect of any operat-
ing problems (sooting, deposits, etc.) or corrosion damage to the water
heat exchanger or the chimney, etc., due to the lack of or the incorrect
functioning of a load unit.
3. OPERATING INSTRUCTIONS
Read these Installation and Operating Instructions through carefully before
installing or operating your stove. Make sure all objects are removed from
the fire chamber (except for the fire chamber lining). Ask your specialist
dealer to explain to you how the stove works and show you how to operate
it. National and European standards and local regulations must be observed
when operating this fireplace.
3.1. GENERAL OPERATING INFORMATION
• Young children, the elderly or the frail: as with all heating appliances,
a guard should be fitted to protect the above persons because both the
glass door and the stove cover panels can become very hot in use. Risk
of burns! Never leave such individuals unsupervised near a stove when
it is lit or when the fire has just gone out. Please make them aware of
this hazard.
• Never place flammable objects on the exposed surfaces or covering