Cadel RIVER IDROTECH 18 User guide

INSTALLER MANUAL
PELLET THERMOSTOVE
EN Original Instructions | ©2022 CADEL srl | All rights reserved - Tutti i diritti riservati
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RIVER IDROTECH 18 - RIVER IDROTECH 24
RIVER IDROTECH 24H2O

RIVER IDROTECH 18 - 24 - 24H2O
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SUMMARY
1 MANUAL SIMBOLOGY....................................2
2 PACKAGING AND HANDLING..........................2
2.1 PACKAGING .............................................................2
2.2 PREPARATION AND UNPACKING .............................2
2.3 STOVE HANDLING....................................................4
3 CHIMNEY FLUE .............................................4
3.1 PREPARING THE SMOKE EXPULSION SYSTEM.........4
3.2 CHIMNEY COMPONENTS.........................................4
3.3 SMOKE DUCT SMOKE FITTING..............................5
3.4 FLUE CHIMNEY OR PIPED DUCT ...........................5
3.5 CHIMNEY POT..........................................................6
3.6 MAINTENANCE........................................................7
4 COMBUSTION AIR.........................................7
4.1 AIR INLET ................................................................7
4.2 COMBUSTIBLE AIR INLET FOR SEALEDCHAMBER
INSTALLATION ...................................................................8
5 EXAMPLES OF INSTALLATION DIAMETERS AND
LENGTHS TO BE SIZED ........................................9
6 INSTALLATION............................................10
6.1 INTRODUCTION.....................................................10
6.2 MINIMUM DISTANCES...........................................11
6.3 OVERALL DIMENSIONS .........................................12
6.4 STOVE DOOR REMOVAL/INSTALLATION................12
6.5 FITTING THE METAL FRAME OF RIVER IDROTECH 18 
24  24 H2O.......................................................................13
6.6 ASSEMBLING THE TOP CLADDING AND BOTTOM
DOOR ..............................................................................13
6.7 FITTING THE MAIOLICA FRAME OF RIVER IDROTECH
18  24  24 H2O................................................................14
6.8 ELECTRIC CONNECTION.........................................14
6.9 STOVE CALIBRATION AND DEPRESSION
MEASUREMENT ...............................................................15
7 PLUMBING CONNECTION.............................16
7.1 PLUMBING SYSTEM CONNECTION.........................16
7.2 CONNECTION DIAGRAM RIVER  IDROTECH 18  24
SENZA DHW..................................................................16
7.3 CONNECTION DIAGRAM RIVER  IDROTECH 24 H2O
DHW ..............................................................................17
7.4 3 BAR DISCHARGE VALVE ......................................17
7.5 WASHING THE SYSTEM .........................................18
7.6 FILLING THE SYSTEM.............................................18
7.7 WATER CHARACTERISTICS ....................................19
7.8 SYSTEM CONFIGURATION .....................................19
7.9 CONFIGURATION 1.................................................19
7.9.1 SYSTEM WITH: DIRECT PELLET STOVE AND ROOM
PROBE OR EXTERNAL THERMOSTAT** OPTIONAL...........19
7.10 CONFIGURATION 2.................................................21
7.11 CONFIGURATION 3.................................................23
7.12 CONFIGURATION 4.................................................25
7.13 CONFIGURATION 5.................................................26
7.14 CONFIGURATION WITH STORAGE TANK AND
AUXILIARY WALLMOUNTED BOILER EXAMPLE...........27
7.15 OPERATING MODE.................................................28
7.16 ELECTRICAL CONNECTIONS...................................29
8 SPECIAL MAINTENANCE ..............................30
8.1 INTRODUCTION.....................................................30
8.2 DIRTY GLASS.........................................................30
8.3 FUME CONDUIT CLEANING....................................31
8.4 SMOKE EXTRACTOR COMPARTMENT CLEANING...31
8.5 CLEANING THE SMOKE EXTRACTION SYSTEM AND
GENERAL CHECKS ............................................................31
8.6 DOOR CLOSING FUNCTIONALITY PERIODIC CHECK32
8.7 FUME PASSAGES CLEANING..................................32
8.8 CLEANER BLOCKED................................................33
8.9 REPLACING THE OVERPRESSURE RELIEF VALVE FOR
THE COMBUSTION CHAMBER ..........................................33
8.10 FUME PIPES ANNUAL CLEANING ..........................34
8.11 GASKET REPLACEMENT.........................................34
9 IN CASE OF ANOMALY..................................34
9.1 PROBLEM SOLVING ...............................................34
9.2 PROBLEM SOLVING THERMOSTOVE...................38
10 TECHNICAL DATAS ......................................40
10.1 ELECTRONIC BOARD WITHOUT DHW ...................40
10.2 ELECTRONIC BOARD WITH DHW ..........................41
10.3 REPAIR INFORMATION ..........................................44
11 FEATURES ..................................................45

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1 MANUAL SIMBOLOGY
USER
AUTHORISED TECHNICIAN
(ONLY to interpret or the Stove-manufacturer or the Authorized Technician of
Technical Assistance Service approved by the Stove-manufacturer)
SPECIALIZED STOVE-REPAIRER
CAUTION:
READ CAREFULLY THE NOTE
CAUTION:
DANGER OR IRREVERSIBLE DAMAGE POSSIBILITY
• The icons with the stylized figures indicates whom the subject dealt in the paragraph is addressed to (between the User and/
or the AuthorizedTechnician and/or the Specialized Stove-repairer).
• WARNING symbols indicates an important note.
2 PACKAGING AND HANDLING
2.1 PACKAGING
• The packaging is made up of recyclable cardboard boxes according to RESY standards, recyclable expanded polystyrene inserts
and wooden pallets.
• All packaging materials can be re-used for a similar use or eventually discharged as waste assimilable to the municipal solid
ones, in accordance with current regulations.
• After having removed the packaging please assure you about the integrity of the product.
2.2 PREPARATION AND UNPACKING
The product is packaged in a recyclable cardboard box according to RESY standards, on a wood pallet. All the packaging materials can
be reused for similar purposes or, in the event, disposed of as waste assimilable to urban solid waste, following the standards in force.
After having removed the packaging, make sure the product is intact.
Handle the product with appropriate means, respecting the safety standards in force. Do not overturn the
packaging and use caution for the ceramic details.
The stoves are delivered in a single package with ceramic panels or steel sides packaged along with the structure and positioned
either on top or to the side. Open the packaging, remove the cardboard and any supporting polystyrene and place the stove in the
selected location, making sure it complies with the requirements.
The stove body or single unit must always be handled upright exclusively using hand trucks. Be especially careful to protect the
door and its glass from mechanical impacts that would compromise their integrity.
If possible, unpack the stove near the area in which it will be installed.
The packaging materials are neither toxic nor harmful.
To take the stove off the pallet, remove the two“U”screws and slide the“S”plate out from the stove foot.There are four“S”brackets
(see below).

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Fig. 1 - Remove the fastening brackets
Fig. 2 - Remove the fastening brackets Fig. 3 - Remove the fastening brackets
Position the stove and connect it to the smoke duct. Adjust the 4 feet (J) to find the right level so that the smoke duct and pipe are
coaxial. If the stove needs to be connected to an exhaust pipe that goes through the back wall (to go into the flue), be extremely
careful not to force it.
Forcing the stove smoke exhaust or using it improperly to lift or position the stove will irreversibly compromise
its function.
Turning the feet clockwise lowers the stove.Turning the feet anticlockwise raises the stove (see below).
Fig. 4 - Foot adjustment

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2.3 STOVE HANDLING
Both whether the stove is packed or not it is necessary to observe the following instructions for handling and transporting the
stove from its sale point to its installation point and for any future movements:
• The stove must be handled with idoneous means paying attention to the existing safety regulations;
• do not turn the stove upside down and/or upset it on one side, but keep it in vertical position or as accorded with the construc-
tor instructions;
• if the stove is made up of ceramic, stone, glass or any particularly fragile material components, all must be moved with the
utmost care.
3 CHIMNEY FLUE
3.1 PREPARING THE SMOKE EXPULSION SYSTEM
The combustion product expulsion system is a particularly important element for the proper operation of the appliance and must
be correctly sized according to EN 13384-1.
Its creation/adaptation/verification must always be carried out by a legally qualified operator and must comply with the regula-
tions in force in the country where the appliance is installed.
The Manufacturer declines all liability for malfunctions caused by a badly sized and non-compliant smoke expulsion system.
3.2 CHIMNEY COMPONENTS
Fig. 5 - Chimney components
LEGEND Fig. 5
1Chimney pot
2Fume outlet
3Chimney flue
4Termal insulation
5External wall
6Chimney union
7Fume pipe
8Heat generator
9Inspection door
10 T-union with inspection plug

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3.3 SMOKE DUCT SMOKE FITTING
The smoke duct is the pipe that connects the appliance to the flue.
This smoke fitting must comply in particular with the following requirements:
• comply with product standard EN 1856-2;
• its cross-section must be of constant diameter and no less than that of the appliance outlet, from the firebox outlet up to the
connection in the flue;
• the horizontal section must be as short as possible and extend no more than 4 metres;
• the horizontal sections must have a minimum upward slope of 3%;
• changes of direction must have an angle no greater than 90° and be easy to inspect
• the number of changes of direction, including that for entry into the flue, and exclusion of the T in the event of a side or rear
outlet, must not exceed 3;
• it must be insulated if it passes outside the installation room
• it must not in any case cross rooms in which it is forbidden to install combustion appliances.
• the use of flexible metal and fibre cement or aluminium hoses is forbidden;
In any case, smoke ducts must be sealed against combustion products and any condensation. For this reason, it is recommended
to use pipes with silicone gaskets or similar sealing devices that withstand the operating temperatures of the appliance (e.g. T200
P1) and that by removing the gaskets, are still T400 N1 G certified.
SYSTEM TYPE Ø80 mm PIPE Ø100 mm PIPE
Minimum vertical length 1,5 mt 2 mt
Maximum length (with 1 union) 6,5 mt 10 mt
Maximum length (with 3 unions) 4,5 mt 8 mt
Maximum number of unions 3 3
Level section (minimum inclination 3%) 4 mt 4 mt
Installation at a height above 1200 m a.s.l. NO Obligatory
3.4 FLUE CHIMNEY OR PIPED DUCT
When creating the flue, in particular comply with the following requirements:
• comply with the applicable product standard (EN 1856, EN 1857 EN 1457, EN 1806, EN 13063..);
• be made with suitable materials to ensure resistance to normal mechanical, chemical, thermal stresses and have adequate
thermal insulation in order to limit the formation of condensate;
• have a predominantly vertical configuration and be free of choke points along its entire length;
• be correctly spaced by air gaps and isolated from combustible materials;
• the flue inside the house must still be insulated and can be inserted in an air shaft provided it complies with the regulations
for piping;
• the smoke duct must be connected to the flue by means of aTee fitting with an inspectable collection chamber for the collec-
tion of soot and any condensate.
• where the sizing provides for wet operation, a suitable condensate collection and siphon discharge system must be set up.
We recommend checking the data plates of the flue for the safety distances that must be observed in
the presence of combustible materials and, if necessary, the type of insulating material to be used.
It is forbidden to connect the stove to a collective or shared flue with other combustion appliances or
with hood outlets.
It is forbidden to use the direct drain on the wall or towards indoor spaces and any other form of drain
not provided for by the regulation in force in the country of installation.

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Fig. 6 - Chimney Flues
LEGEND Fig. 6
1Chimney flue with insulated stainless-steel pipes
2Chimney flue on the existing chimney
3Inspection plug
4Inspection door
• The chimney flue must be provided CE in accordance with EN 1443 regulation. Please find attached an example of label:
Fig. 7 - Example of label
3.5 CHIMNEY POT
The chimneypot, meaning the end part of the flue, must meet the following characteristics:
• the smoke outlet section must be at least double the internal section of the chimney;
• prevent the penetration of rain or snow;
• ensure the outlet of smoke even in the event of wind (windproof chimneypot);
• the height of outflow must be beyond the reflux area (**) (refer to national regulations to identify the reflux area);
• always be built at a distance from antennas or dishes, and never be used as a support.
(**) unless there are specific national derogations (clearly specified in the corresponding instruction manual in English) which under
appropriate conditions allow it; in this case, strictly follow the product/installation requirements of the relative regulations/technical
specifications/legislation in force in that country.

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Fig. 8 - Anti-wind chimney pots
Fig. 9 - Reux area
3.6 MAINTENANCE
• The fumes extraction pipes (fumes conduit + chimney flue + chimney pot) must always be cleaned, scrubbed and checked
by an expert stove-repairer, in compliance with current regulations, with the instructions of the stove-manufacturer and the
directives of your insurance company.
• In case of doubts, please follow the most restrictive regulations.
• Have your chimney flue and chimney pot checked and cleaned by an expert chimney sweep at least once a week.The chimney
sweep has to release a written declaration about the security of the system.
• Not cleaning compromise safety.
4 COMBUSTION AIR
4.1 AIR INLET
It is mandatory to provide an adequate external air inlet that supplies the combustion air required for the product to work properly.
The flow of air between the outside and the installation room can take place with a free air inlet or by channelling the air directly
to the outside (***).
The free air inlet must be:
• be made at floor level and in any case not higher than the height of the appliance;
• always be protected with an outer grille and in such a way that it cannot be obstructed by any object;
• have a minimum total free area of 80 cm2(net of the grille);
The presence of other suction devices (e.g.: vmc, electric fan for stale air extraction, kitchen hood, other stoves, etc.), in the same
room,or in communicating rooms of the same housing unit, could cause negative pressure in the room. In this case, with the
exception of sealed installations, one must verify that, with all the equipment on, no more than 4 Pa of negative pressure is created
inside the installation room with respect to the outside. If necessary, increase the air inlet section.
It is possible to duct the air required for combustion to the outside by connecting the external air inlet directly with the combustion
air inlet which is usually found on the back of the appliance.

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The external ducted air vents must be:
• made close to the floor and anyway not higher than the appliance
• protected by a grille that guarantees a clear surface equal to the cross-section of the duct and made so that it cannot be ob-
structed by any object
• The air vent can be made directly on a wall of the installation room communicating with the outside, or indirectly in adjacent
rooms that permanently communicate with the installation room, according to that set forth by standards in force.
The duct must comply with the following dimensions (each 90° bend is equivalent to one linear metre):
(***) In the event the combustion air is ducted on unsealed products, still verify that no more than 4 Pa of negative pressure is created
inside the installation room with respect to the outside, otherwise provide for an additional air intake in the room.
Below 15 kW:
Air duct diameter Maximum length (smooth duct) Maximum length (corrugated duct)
50 mm 2 m 1 m
60 mm 3 m 2 m
80 mm 7 m 4 m
100 mm 12 m 9 m
Above 15 kW:
Air duct diameter Maximum length (smooth duct) Maximum length (corrugated duct)
50 mm - -
60 mm 1 m -
80 mm 3 m 1 m
100 mm 7 m 4 m
Fig. 10 - Direct air inow Fig. 11 - Air inlet for sealed-chamber installation
LEGEND Fig. 10|Fig. 11
1Room to ventilate
2External air inlet
4Shield grid
5Curve inlet to turn downwards
4.2 COMBUSTIBLE AIR INLET FOR SEALEDCHAMBER INSTALLATION
How to connect to the stove in the sealed chamber with concentric system:

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Fig. 12 - Phase1
• Connect the air intake pipe to the combustion air pipe of the stove and tighten everything with a clamp (see [Fig. 12).
5 EXAMPLES OF INSTALLATION DIAMETERS AND LENGTHS TO BE SIZED
Fig. 13 - Chimney ue

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1. Flue installation with hole for the passage of the pipe increased by:
minimum 100mm around the pipe if next to non-flammable parts such as cement, brick, etc.; or minimum 300mm around the
pipe (or as required by plate data) if next to flammable parts such as wood etc.
In both cases, install suitable insulation between the flue and the ceiling.
Always check and comply with the plate data of the flue, specifically the minimum safety distances from combustible materials.
The previous rules also apply for holes made in walls.
2. Old flue, pipe with the inclusion of an external access door for chimney cleaning.
3. External flue made of insulated stainless-steel pipes, i.e. with double walls: all securely mounted on the wall. With windproof
chimneypot.
4. Ducting system usingTee fittings that allow easy access for cleaning without having to remove the pipes.
LEGEND Fig. 13
UInsulation
VPossible diameter increase
IInspection cap
SInspection access panel
PAir inlet
TTee fitting with inspection cap
ADistance from flammable material (smoke duct plate)
BMaximum 4 m
CMinimum 3° slope
DDistance from flammable material (appliance plate)
EReflux area
FAir ducting
The instructions in this chapter refer explicitly to the Italian installation regulation UNI 10683. In any case,
always observe the regulations in force in the country of installation.
6 INSTALLATION
6.1 INTRODUCTION
The heating system (generator + combustion air supply + combustion product expulsion system + any hydraulic/
aeraulic system) must be installed in compliance with the laws and regulations in force (*), and carried out by a
qualified technician, who must issue a declaration of conformity of the system to the system manager and shall
undertake full responsibility for final installation and consequent good operation of the product.
The manufacturer declines all responsibility in the event of installations that do not comply with the laws and regulations in force
and inappropriate use of the appliance.
In particular one must ensure that:
• the environment is suitable for installing the appliance (floor load-bearing capacity, presence or possibility of creating an ade-
quate electrical/hydrauic/aeraulic system when required, volume compatible with the appliance characteristics, etc.);
• the appliance is connected to a smoke expulsion system correctly sized according to EN 13384-1, which is resistant to soot fire
and which complies with the distances prescribed by the combustible materials indicated on the plate data;
• there is a suitable combustion air flow to the appliance;
• other combustion appliances or extraction devices installed do not cause a negative pressure of more than 4 Pa in the room
where the product is installed compared to the outside (only sealed appliances are allowed a maximum of 15 Pa of negative
pressure in the room).
(*) The national reference standard for the installation of domestic appliances is UNI 10683 (IT) - DTU NF 24.1 (FR) - DIN 18896 (DE) -
NBN B 61-002 (BE) - Real Decreto 1027/2007 (ES) - Paesi Bassi (NL) Bouwbesluit - Danmark (DK) BEK n° 541 del 27/04/2020.
In particular, it is recommended to strictly observe the safety distances from combustible materials to avoid se-
rious harm to people and to the integrity of the home.

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Installation of the appliance must ensure easy access to service the appliance itself, the smoke channels and the flue.
Always maintain adequate distance and protection in order to prevent the product from coming into contact with water.
It is forbidden to install the stove in rooms with a fire hazard.
With the exception of sealed installations, it is also forbidden for liquid fuel appliances with continuous or inter-
mittent operation that draw the combustion air from the room they are installed in or B-type gas heating applian-
ces, with or without the production of domestic hot water, to coexist in the same room or in interconnecting rooms.
Sealed installation means that the product is certified as sealed and its installation (ducting
of the combustion air and connection to the chimney) is airtight with respect to the installa-
tion environment.
A sealed installation does not consume the room’s oxygen because it draws all the air from the outer environment (if suitably
ducted) and makes it possible to install the product in all houses that require a high degree of insulation such as“passive”or“high
energy efficiency”houses. Thanks to this technology there is no risk of smoke emissions in the room and no air inlets - hence not
even the relevant ventilation grilles - are required in the installation premises.
Consequently, there will be more draughts of cold air in the room, thus making it more comfortable and increasing the overall
efficiency of the system.The sealed stove in a sealed installation is compatible with the presence of forced ventilation or premises
that might have negative pressure with respect to the outside.
6.2 MINIMUM DISTANCES
Observe the distances from flammable objects (sofas, furniture, wood panelling, etc..) as specified in the following diagram.
If objects considered to be particularly sensitive to heat are present, such as furniture, curtains or sofas, as a precaution, increase
the stove clearances substantially to avoid possible deterioration due to the effect of heat.
Fig. 14 - Safety distances from combustible material.
.LEGENDA Fig. 14
dR (rear distance) 200 mm
dS (side distance) 300 mm
dB (lower distance) 0 mm
dC (upper distance) 750 mm
dP (front radiation) 1000 mm
dF (floor radiation) 1000 mm
dL (side radiation) 1000 mm
1FLOOR
2FRONT FLAMMABLE MATERIAL
3AREA SUBJECT TO RADIATION

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.LEGENDA Fig. 14
4FLOOR GUARD
5RADIATED SURFACE TO BE PROTECTED
6REAR/SIDE/UPPER FLAMMABLE SURFACE
If the floor is made of combustible material, use a protection made of non-combustible material (steel, glass...) that also protects
the front from any falling combusted material during cleaning operations.
Always fit a floor guard if the floor is made of flammable material.
Install the stove also detached from any non-combustible walls/surfaces, observing a minimum clearance of 200mm (back) and
300mm (side) to allow effective aeration of the appliance and a good distribution of heat in the room.
In any case, ensure adequate distance to facilitate access during cleaning and extraordinary maintenance. If this is not possible, it
must still be possible to distance the product from adjacent walls/elements.
This operation (1*) must be performed by a technician qualified to disconnect the combustion product expulsion ducts and their
subsequent restoration.
For generators connected to the hydraulic system, a connection must be provided between the system itself and the product so
that, during extraordinary maintenance, carried out by a qualified technician, it is possible to move the generator 1 by at least 50
cm from adjacent walls without emptying the system (e.g. by using a double shut-off gate or suitable flexible connection).
(1*) The national reference standard for the installation of domestic appliances is UNI 10683 (IT) - DTU NF 24.1 (FR) - DIN 18896
(DE) - NBN B 61-002 (BE) - Real Decreto 1027/2007 (ES) Paesi Bassi (NL) Bouwbesluit - Danmark (DK) BEK n° 541 del 27/04/2020.
6.3 OVERALL DIMENSIONS
Fig. 15 - RIVER IDROTECH 18 - 24 - 24 H2O
LEGEND Fig. 15
AExhaust fumes d.8 cm
BHole combustion air inlet d.5 cm
6.4 STOVE DOOR REMOVAL/INSTALLATION
For some operations (e.g.: side panel assembly and cleaning) you must remove the stove door.
To remove the door:
• Open the door.
• Undo the screws from the upper hinge (see Fig. 16).
• Remove the hinge, keeping the door in position (see Fig. 17).
• Lift the door and release it from the lower hinge.
• To assemble, proceed in reverse order.

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Fig. 16 - Removing the screws Fig. 17 - Remove the hinge
6.5 FITTING THE METAL FRAME OF RIVER IDROTECH 18  24  24 H2O
To assemble the frame, proceed as follows:
• Remove the top panel Fig. 18.
Fig. 18 - Remove the panel Fig. 19 - Attach the frame to the stove in the slots Fig. 20 - 1st slot
Fig. 21 - 2st slot Fig. 22 - Secure the frame
6.6 ASSEMBLING THE TOP CLADDING AND BOTTOM DOOR
To assemble the cladding, proceed as follows:
Place the top panel on the stove (if maiolica).
Attach the top in the specific slots (if in metal).

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Fig. 23 - Placing the top panel Fig. 24 - Hook the panel Fig. 25 - Hook the panel.
6.7 FITTING THE MAIOLICA FRAME OF RIVER IDROTECH 18  24  24 H2O
To assemble the frame, proceed as follows:
Fig. 26 - Fitting the maiolica panels Fig. 27 - Bottom slot
Fig. 28 - Attach the panel Fig. 29 - Securing the panel
6.8 ELECTRIC CONNECTION
Warning: the appliance must be installed by an authorized technician!
• The electric connection occurs through a cable with plug put in an electric socket which is able to support charge and tension
specific of every model, as described in the technical datas table (see FEATURES a pag. 44).
• The plug must be easily accessible when the appliance is installed.
• Please further assure you that your network is endowed with an efficient earth connection: if it does not exist or if it is not
efficient, please endow you with one in compliance with the law.
• Connect the supply cable first on the back of the stove (see Fig. 30 and Fig. 31) and then at a wall electric socket.

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Fig. 30 - Electric socket with master switch Fig. 31 - Plug connected
• Do not use extension cables.
• If the feeder cable is damaged, it must be replaced by an authorized technician.
• When the stove is not going to be used for a long period of time, it advisable to remove the plug from the socket on the wall.
• An electrical connection to a UPS/ACCUMULATOR/ STABILISER must guarantee a voltage of at least 210 V without power
surges. Considering the variety of UPS on the market regarding size and construction qualities, we cannot guarantee operation
once the stove is connected to these devices.
6.9 STOVE CALIBRATION AND DEPRESSION MEASUREMENT
This stove has a pickup point positioned on the tank in order to measure the depression of the combustion chamber and verify its
proper operation.
To do this, proceed as follows:
• Connect a digital pressure switch with a tube to detect the negative pressure (see Fig. 32 Fig. 33).
• Load the feed screw via appropriate function.
• Start the stove and set "Set flame" to power 1 (the start-up time of this stove lasts between 8 and 10 minutes to ensure mini-
mum draught).
• Compare the read values with those on the table.
• Change power every 10 minutes and wait for it to stabilise.
• Access the user menu and, if necessary, change the parameters.
Fig. 32 - Cap removal Fig. 33 - Digital pressure switch connection
DATA P1 P2 P3 P4 P5
Stove depression - temperature IDRO
18 kW 20 Pa - 125 °C 30 Pa - 150 °C 42 Pa - 178 °C 54 Pa - 200 °C 65 Pa - 230 °C
Stove depression - temperature IDRO
24 kW 20 Pa - 125 °C 35 Pa - 160 °C 45 Pa - 190 °C 60 Pa - 220 °C 75 Pa - 250 °C
Stove depression - temperature IDRO
24H2O kW 20 Pa - 125 °C 35 Pa - 160 °C 45 Pa - 190 °C 60 Pa - 220 °C 75 Pa - 250 °C
NB: for good combustion, the depression values must be between ± 5 Pa and the temperature values between ± 10°C.

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7 PLUMBING CONNECTION
7.1 PLUMBING SYSTEM CONNECTION
IMPORTANT!
If installation of the product involves interaction with another, pre-existing system complete with heating
equipment (gas boiler, methane boiler, diesel boiler, etc.), contact qualified personnel, who subsequently will
be responsible for conformity of the system in compliance with the applicable law in force.
The Company declines all responsibility for damage to persons or things in the event of failed or incorrect
operation, if the aforementioned warnings are not complied with.
IMPORTANT!
WE STRONGLY RECOMMEND WASHING THE ENTIRE SYSTEM BEFORE CONNECTING THE STOVE IN ORDER TO RE-
MOVE RESIDUE AND BUILD-UPS.
Always install gate valves upstream of the stove to isolate it from the hydraulic system should it be necessary
to move it for routine and/or special maintenance. Connect the stove using flexible hoses so as not to excessi-
vely bind the stove to the system and to allow it to be moved slightly.
The pressure discharge valve must always be connected to a water discharge pipe. The pipe must be suitable
to withstand the high water temperature and pressure.
7.2 CONNECTION DIAGRAM RIVER  IDROTECH 18  24 SENZA DHW
Fig. 34 - Connection diagram (senza DHW)
LEGEND Fig. 34
A1 3/4”M heating water delivery
A2 3/4”M heating water return
A3 System filling
A4 System draining
B=150-C=260 RIVER-IDROTECH

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7.3 CONNECTION DIAGRAM RIVER  IDROTECH 24 H2O DHW
Fig. 35 - Connection diagram DHW
LEGEND Fig. 35
A1 3/4”M heating water delivery
A2 3/4”M heating water return
A3 System filling / sanitary water inlet
A4 System draining
A5 Domestic hot water outlet
7.4 3 BAR DISCHARGE VALVE
There is a safety valve that can be inspected on the back of the stove under the pump. IT IS MANDATORY to connect a rubber hose
that is resistant to temperatures up to 110°C (not supplied) to the safety exhaust and run it to the outside in case water is dischar-
ged.
The manufacturer of the appliance is not liable for any flooding caused by the safety valves tripping if they
are not properly coupled to the outside of the product or to an appropriate collection and extraction system.
Fig. 36 - Discharge valve
LEGEND Fig. 36
A3 bar CE PN10, TMAX 110°C safety valve
BATTENTION: 110°C !!

RIVER IDROTECH 18 - 24 - 24H2O
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7.5 WASHING THE SYSTEM
The connections must be easy to disconnect via pipe unions with swivel fittings.
Install suitable gate valves on the heating system pipes. A safety valve must be installed on the system.
To protect the heating system from harmful corrosion, build-ups or deposits, it is extremely important before installing the ap-
pliance to wash the system in compliance with the UNI 8065 standard (water treatment in heating systems for domestic use),
using appropriate products.
The use of FERNOX PROTECTOR F1 (available at our authorised centres) product is recommended, this provides long-term protec-
tion of heating systems against corrosion and calcium build-up. It prevents the corrosion of the metal parts of the appliance, i.e.
the ferrous metals, copper and copper and aluminium alloys. It also reduces the noise produced by the boiler. Refer to the instruc-
tions on the product. Cleaning should be performed by a qualified technician.
We also recommend the use of FERNOX CLEANER F3 and LEAK SEALER F4, always available from our authorised distribution centres.
FERNOX F3 is a neutral product for rapid and efficient cleaning of heating appliances. It has been designed to eliminate residues,
oily deposits and incrustations from existing appliances of all ages. It can help restore the heating efficiency of the boiler and
reduce the noise it generates.
FERNOX F4 is intended to be used with all heating appliances to seal micro fractures that cause small and inaccessible leaks.
7.6 FILLING THE SYSTEM
To fill the system, the stove may be equipped with a terminal (optional) with a non-return valve (D) to manually fill the heating
system (if there is no terminal, use the filling valve on the main boiler). During this operation, the automatic bleed valve under the
top ensures that any air in the system is expelled.
To allow the valve to bleed, we recommend loosening the grey cap by a turn and leaving the red cap tight (see figure).The filling
pressure when the system is COLD must be 1 bar. During operation, should system pressure drop (due to the gas dissolved in the
water evaporating) below the above indicated minimum value, the user must bring it back to the initial value, using the filling
valve.
For proper stove operation when it is HOT, pressure in the boiler must be 1.5 bar.
To monitor system pressure, the terminal (optional) is equipped with a pressure gauge (M).
When filling is complete, always shut off the valve.
Fit the system with a 2 bar safety valve connected to an accessible outlet.
It is normal for there to be noises and gurgling until all the air in the system has been expelled.
Fig. 37 - Terminal with lling valve (D) and pressure gauge (M) Fig. 38 - Manual bleed valve (located under the top) (Idro Prince316-23-23
H2O, Aquos316-23-23 H2O, Idron 16-22 Airtight, Hidrore 22.8)
SETTING VALUES
HWater temperature probe
IFlue gas temperature probe
GAir venting valve

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7.7 WATER CHARACTERISTICS
The characteristics of the water used to fill the system are very important to prevent the build-up of mineral salts and the forma-
tion of incrustations along the pipes, in the boiler and in the heat exchangers.
Therefore, please ASKYOUR PLUMBER FOR HIS ADVICE CONCERNING:
Hardness of water circulating in the system, to prevent problems of incrustation and limescale, especially in
the domestic water heat exchanger. (> 25° French).
Installation of a water softener (if water hardness exceeds 25° French).
Filling the system with treated water (demineralised).
Possibly providing an anti-condensation circuit.
Installation of hydraulic shock absorbers to prevent water hammering along the fittings and pipes.
If you have very extensive systems (with a large amount of water) or which require frequent refilling, the installation of water
softening systems.
Itshould be remembered thatincrustations drasticallyreduce performancedue totheir extremelylowthermal
conductivity.
7.8 SYSTEM CONFIGURATION
Upon installation, the product must be set according to the type of system, selecting the appropriate parameter in the“SETTINGS”
menu.
The possible configurations are 5, as described below:
CONFIGU-
RATION DESCRIPTION
1 Room temperature management via probe on the stove or by enabling an external room thermostat.
2
2.1 Room temperature management via probe on the stove or by enabling an external room thermostat: instantaneous
DHW production with INTEGRATED plate exchanger.
2.2 Room temperature management via probe on the stove or by enabling an external room thermostat; DHW production
for boiler or storage tank with EXTERNAL thermostat CONNECTED TO THE ELECTRONIC BOARD (optional).
DISCONNECT ANY 3-WAY VALVES AND INTERNAL FLOW SWITCHES
3
Room temperature management via probe on the stove or by enabling an external room thermostat; DHW production for
boiler OR STORAGE TANK with ntc probe CONNECTEDTO THE ELECTRONIC BOARD (10 k ß3435).
DISCONNECT ANY 3-WAY VALVES AND INTERNAL FLOW SWITCHES
4 External Puffer management controlled by thermostat CONNECTED TOTHE ELECTRONIC BOARD.
5 External Puffer management controlled by ntc probe CONNECTED TOTHE ELECTRONIC BOARD (10 k ß3435).
1-2-3-4-5 Example of connection with AUXILIARY GAS wall-mounted boiler
Following the explanations of the previous chapter, here are the various system configurations to make it easier to recognise the
system the boiler is installed on and avoid an incorrect selection.We have indicated which parameters are automatically activated,
disabled or blocked for each configuration.
7.9 CONFIGURATION 1
7.9.1 System with: direct pellet stove and room probe or external thermostat** (optional)
All activities relating to electrical connections in the electronic board must be carried out by
authorised personnel.
** If the external thermostat is used, activate the “EXT THERMOSTAT” function on the control panel and con-
nect it directly to the electronic board (see electrical system below).