Windhager FireWIN User manual

Assembly instructions
FireWIN
windhager.com
Fully automatic pellet central heating boiler
for the living room and entire apartment
Performance range: 4,7 to 12 kW
Pellets
07/2012 092125/05

2
Table of contents:
Table of contents:
1. Important initial information for the Technician. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1 Safety precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
1.2 Application options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.3 Flue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
1.4 Fuel storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
1.4.1 Automated pellet supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.4.2 Manual pellet supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2. For the Installer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1 Delivery, packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
2.1.1 FireWIN Klassik . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1.2 FireWIN Premium and Exklusiv. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1.3 Optional accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2 System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
2.2.1 Area of use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2.2 Heating fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2.3 Heating circuits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.2.4 Domestic water (hot water tank) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.2.5 Return temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.2.6 Accumulator tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.2.7 Heating water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2.8 Water-side resistance (pressure loss) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.3 Combustion air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
2.3.1 Operating with room air:
(Combustion air supply from the installation room or adjacent room). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.3.2 Operating independently of the room air:
(Combustion air supply from ventilation draught in the chimney). . . . . . . . . . . . . . . . . . . . . . . . . . .11
2.4 Taking in . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
2.5 Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
2.5.1 Installation room. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.5.2 Heat radiation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.6 Minimum service clearances for fire protection, cleaning and maintenance . . . . . . . . . . . . . . . . . . . . . . . 15
2.6.1 Masonry feed-throughs for the exhaust pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.6.2 Minimum service clearances with flue gas tube connection straight back . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.6.3 Minimum service clearances with flue gas tube connection to the left or right side . . . . . . . . . . . . . . . . . . . . 17
2.7 Dimensional sketches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
2.7.1 FireWIN flue gas and air supply connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2.7.2 FireWIN without heating fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2.7.3 FireWIN – UAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2.7.4 FireWIN – UAML . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2.7.5 Suction turbine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
2.7.6 Mounting base – FIRE 022 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

3
Table of contents:
2.8 Routing variants of delivery and return air hose. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
2.8.1 Routing / connection options for boiler. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
2.8.2 Storage room and feed system in living area or basement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
2.8.3 Storage room and feed system in unheated non-living areas (e.g. attic) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
2.9 Installation sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
2.10 Installation of hydraulic equipment / fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
2.10.1 Installation of fittings for FireWIN UAM / UAML . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
2.10.2 Installation of flow and return pipes for FireWIN without fittings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
2.11 Installing the feed unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
2.12 Installing the cladding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
2.13 Mounting plate for non-flammable steel tubes within the area of the exhaust pipe . . . . . . . . . . . . . . .29
2.14 Installing the exhaust pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
2.15 Installing cover plates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
2.16 Initial start-up and operating instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
3. For the Electrician. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
3.1 Electrical connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
3.1.1 Electrical connection of the FireWIN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
3.1.2 Electrical connections of the suction turbine, changeover unit, regulation. . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
4. For the Service Technician. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
4.1 Start-up and operating instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
4.2 Service and repair work. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
4.3 Technical data for calculating the flue gas system acc. to EN 13384-1 . . . . . . . . . . . . . . . . . . . . . . . . . .36
4.4 Technical data – General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
4.5 Service level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
4.5.1 Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
4.5.2 Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
4.5.3 Actuator test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
4.5.4 Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
4.5.5 Installation of MESplus modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
4.6 InfoWINplus basic settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
4.7 FireWIN basic circuitry. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
4.8 FireWIN pellet feed connecting diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
4.9 FireWIN pellet feed connecting diagram with mixer for buried tank . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
4.10 Connection diagram for FireWIN pellet feed with solo probe. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
4.11 Connecting diagram for air intake/exhaust flap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
Guarantee and warranty limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

4
1. Important initial information for the Technician
1. ImportantinitialinformationfortheTechnician
1.1 Safety precautions
The boiler and related accessories are state of the art and meet all applicable safety regulations. Your boiler and
all accessories operate using 230 V AC electric current. Improper installation or repair can pose the danger of
life-threatening electric shock. Installation may be performed only by appropriately qualified technicians.
Caution symbols
Please take careful note of the following symbols in these Installation instructions.
Attention!
Ignoring the warnings identified can lead to personal injury.
Information!
Ignoring the warnings identified can lead to malfunction of, or damage to the boiler or heating
system.
Note!
The blocks of text highlighted provide information and tips for operation.
1.2 Application options
FireWIN is designed for installation in the living area and is configured as a fully featured central heating system.
This means no second heat generator is required. If desired, however, FireWIN can be combined with alternative
heat generators (e.g. solar or solid fuel boiler). Refer to the hydraulic systems for details about this.
The necessary hydraulic components for a heating circuit as well as hot water preparation are integrated in
FireWIN (see hydraulic equipment). This means there is no longer any need for a boiler room or equipment room
and that FireWIN is ideally suited for use as a central heating system in houses without a basement or when
central heating is being installed in a building for the first time as part of a renovation project.
Attention!
The configuration of the entire system must comply with the requirements of regional legislation,
applicable regulations, standards and guidelines.

5
1. Important initial information for the Technician
1.3 Flue
A properly dimensioned flue is required for optimal functioning of the combustion system. Measurement of the
dimensions must follow EN 13384-1. See the Technical data section for values required for this calculation.
Please note that in the lower performance range, flue gases may be below 90 °C. Therefore, thermally-insulated
flues meeting thermal transmittance coefficient Group I requirements according to DIN 18160 T1 or other appro-
priate, officially approved moisture-resistant exhaust systems may be connected to the hearths.
The flue gas system must display at least the following classification:
Temperature class: T400 = nominal operating temperature 400 °C
Soot fire resistance class: G = flue gas system with soot fire resistance
Corrosion resistance class: 2 = suitable for unprocessed wood fuels
Information!
Frequently, overhaul of existing systems involves oversized flue cross-sections or flues not desig-
ned for lowtemperature operation. We suggest an evaluation by the local building inspector before
installing the boiler system. In this way appropriate modifications can be made to the flue before
system installation (see technical data for flue calculation values).
Attention!
Energy-saving intake regulators or explosion flaps are not allowed to be installed in the living area.
Comply with the statutory regulations and directives.
1.4 Fuel storage
1.4.1 Automated pellet supply
The pellets can be stored in bulk in a storage room, sheet steel tank, fabric tank or a buried tank. See the separate
“Pellet storage room” planning documents for planning information about this pellet storage.
The requirements for pellet storage are defined in ÖNORM M7137 for Austria or the Firing Ordinance FeuV for
Germany.
The pellets must be stored in a dry place in order to achieve trouble-free operation with optimum combustion
and at maximum efficiency.
Information!
The pellets must be transported carefully into and out of the storage room so as to maintain good
pellet quality.
The FireWIN can be operated with 1 probe (sheet steel tank solo probe), 2–3 probes or with up to 8 probes.
The maximum transport length or height for a pellet feed system is 25 m horizontally with a 6 m vertical dif-
ference between the highest and lowest levels of the hose. These maximum values require a stable electricity
supply (min. 220 VAC under load).
1.4.2 Manual pellet supply
Pellets in bags must be stored in a dry place.
Please observe the local regulations on storing fuel.

6
2. For the Installer
2. For the Installer
2.1 Delivery, packaging
Hydraulic equipment FireWIN type/order no.
without heating fittings FW_ 090 FW_ 120
with energy-saving circulation pump, expansion tank 12 l,
motorised mixing valve, safety valve and pressure gauge FW_ 090 UAM FW_ 120 UAM
with energy-saving circulation pump, hot water tank feed
pump with gravity brake, expansion tank 12 l, motorised mi-
xing valve, safety valve, pressure gauge and supplied gravity
brake for heating circuit
FW_ 090 UAML FW_ 120 UAML
2.1.1 FireWIN Klassik
The boiler is supplied on a wooden pallet covered with a plastic sack. The cladding parts are in a separate card-
board box. Cleaning tools are packed in the combustion chamber and the ash pan.
2.1.2 FireWIN Premium and Exklusiv
The boiler is supplied on a wooden pallet covered with a plastic sack. The cladding parts are in a separate
cardboard box. Cleaning tools are packed in the combustion chamber and the ash pan. In addition, the suction
turbine (fully automated pellet feed) is packed in a cardboard box.
2.1.3 Optional accessories
According to price list, fitted on or in boiler or enclosed as per order.

7
2. For the Installer
2.2 System
2.2.1 Area of use
For heating buildings acc. to EN 12831.
The boilers are designed and approved as heat generators for hot water heating systems with a permissible flow
temperatures of up to 90°C. They may be installed only in sealed systems. The maximum flow temperature is
factory-set at 75°C.
2.2.2 Heating fittings
Safety valve 2.5 bar (upplied as standard with FireWIN versions UAM and UAML):
The safety valve is type-tested (code letter “H”). Only safety valves of this kind are allowed to be used. The client
must provide a safety valve in FireWIN versions without heating fittings. The drainage line from the safety valve
must be provided by the client. The line can be routed backwards on the left side between the pellet reservoir
container and the left side panel – Fig. 2. Break out the cut-out on the rear wall.
Please note:
– Have the function checked by an expert on start-up and at least once a year.
Fig. 2 Drain line from safety valve
Break out the cut-out in the rear wall
Drain line from safety valve
Expansion tank (upplied as standard with FireWIN versions UAM and UAML):
of the expansion tank depends of the parameters of the heating system and must be calculated on a case-by-
case basis. The flat pressure expansion tank installed in FireWIN versions is designed for a feed pressure of
1.0 bar and a content of 12 l. An additional expansion tank must be provided by the client if this volume is not
sufficient.
Pressure gauge (in FireWIN versions UAM and UAML installed at the front behind the cladding door as standard):
The system pressure should be at least 1 bar. Check the system pressure, more frequently at first and then
twice a year later on.
Bleeder valve
Installed as standard in all boilers under the front cover. In addition, the variants UAM and UAML also have a
manual ventilation function behind the left side panel at the feed above the circulation pump. In boilers without
fittings, ventilation is to be provided on the feed if the feed is routed downwards.
A low-water cut-off:
A low-water cut-off is not required for systems providing up to 300 kW nominal thermal output, if it can be as-
sured that excess heating will not result from a lack of water in the system.
The boilers are equipped with an electronic temperature regulator and a type-tested safety temperature limiter.
If the boiler is above the radiators, then a low-water cut-off must be installed.

8
2. For the Installer
Circulation pump (upplied as standard with FireWIN versions UAM and UAML):
The circulation pump shaft is lubricated by water, therefore the pump is never allowed to run without water.
Heating circuit pump:
High-efficiency circulation pump
Type: HEP 15–4.0 E
Installation dimension:130 mm
1
0,4
2
3
4
5
2,0
6
2,4
H
(m)
2,8 3,2 3,6 4,0
0
0
Q (m
HEP...-4.0-E
0,8 1,2 1,6
1m
2m
3m
4m
min
Diagramm 1 Pump characteristic curve HEP 15–4.0 E
1
1
2
3
4
5
5 6
H
(m)
0
0
HUP...-4.0 U
2 3 4
6
7
Q (m 3/ h)
3
2
1
Diagramm 2 Pump characteristic curve HUP 15–4.0 U
Hot water loading pump:
Type: HUP 15–4.0 U
Installation dimension: 130 mm
2.2.3 Heating circuits
A motorised mixing valve is always required for the FireWIN in order to protect the boiler and one must be fitted
in each heating circuit. A feed contact thermostat (FK-001) must be installed for underfloor circuits. If required,
the hydraulic fittings can be integrated in the boiler for 1 mixed heating circuit (UAM or UAML version).
2.2.4 Domestic water (hot water tank)
If FireWIN is used for loading a hot water tank, a gravity brake must be installed in the heating return. This is
provided as standard with FireWIN UAML.
2.2.5 Return temperature
The return flow temperature increase installed as standard means that FireWIN can be operated with a return
temperature down to min. 20 °C. No external return flow temperature increase is required.
2.2.6 Accumulator tank
In principle a pellet boiler system does not need a buffer tank. A guaranteed minimum heat consumption is
required, e.g. fit a consumer circuit that cannot be blocked off or do not fit thermostat valves on all radiators.
Exceptions:
If the total heating requirements of the building according to the ÖNORM M 7500 or EN 12831 calculation are
less than 50 % of the boiler’s nominal output, we would recommend integrating a buffer tank in the system. This
means that the FireWIN loads the buffer tank with a return hold-up group. (Hydraulic system SYS 402, please
contact Windhager for planning advice)
Boiler installation criteria:
– controlled residential area ventilation is an advantage if the boiler is being installed in a small space or if buil-
ding heat loads are low
– heat shield (accessory: FIRE 023) needed
– the room temperature in the installation room is too high
– FireWIN operating times are set by the system control

9
2. For the Installer
Diagramm 3 water-side resistance - FireWIN
FireWIN 90, FireWIN 120
Pressure loss (mbar)
Flow rate (m3/h)
2.2.7 Heating water
a) The chemical composition of the heating water must meet the specifications of ÖNORM H 5195 Part 1 or
VDI 2035 P1. According to ÖNORM M 5195 Part 1 (2010 edition), the condition of the heating water must be
checked every 2 years by a heating technician in order to avoid corrosion and sediment accumulation in the
heating system.
b) The pipe lines and heating appliances should be thoroughly rinsed before the boiler is connected.
c) To protect the boiler from contamination from the heating system, installation of a dirt trap is required in old
or existing systems (mesh size 0.5 mm) with maintenance cocks installed in the return line.
d) If oxygen diffusion or sludge build-up cannot be prevented, the system must be segregated by means of a
heat exchanger.
e) If antifreeze is used, a minimum volume of 20 % antifreeze is required, otherwise corrosion prevention is not
guaranteed.
2.2.8 Water-side resistance (pressure loss)

10
2. For the Installer
2.3.1 Operating with room air:
(Combustion air supply from the installation room or adjacent room)
Always ensure there is a sufficient combustion air supply (no windows and doors that provide a complete air seal).
Combustion air supply from a well ventilated adjacent room via an air intake pipe:
The combustion air is carried along an air intake pipe from a well ventilated adjacent room (e.g. stairwell) to the
FireWIN. This avoids the induction noise in the installation room during operation. The accessory FIRE 024 is also
required for this variant. The air supply is carried in commercially available plastic pipes Ø 75 mm. The maximum
induction length is 9 m, each 90° bend reduces the length by 1 m.
Combustion air supply directly from the installation room:
The combustion air is drawn directly by the device from the installation room, therefore the installation room
has to be adequately ventilated.
2.3 Combustion air
An adequate supply of combustion air is absolutely essential. The combustion air must be free from pollutants
(gases, vapours and dusts), otherwise malfunctions and increased wear (e.g. corrosion) may occur.The following
combustion air flow is required for operation at max. heat output:
FireWIN 90 (9 kW): approx. 20 m3/h
FireWIN 120 (12 kW): approx. 26 m3/h
Information!
Malfunctions or complaints occasioned by inadequate combustion air will not be covered by the
guarantee!
There are various possible ways of supplying the combustion air:
– Operating with room air
(Combustion air supply from the installation room or adjacent room)
– Operating independently of the room air
(Combustion air supply from ventilation draught in the chimney)
Negative pressures in the installation/induction room with point 2.3.1 Operating with room air are not permitted.
The function and safety of FireWIN is affected when combining with room ventilation systems and combustion air
supply from the installation room or adjacent room. Room ventilation systems must switch off automatically when
the negative pressure in the device is more than 4 Pa below the external pressure. Special ventilation systems are
available for controlled living area ventilation in combination with solid fuel systems – refer to information provided
by the manufacturers of ventilation systems.
If ventilation systems (e.g. extractor hoods or pneumatic pumping systems, etc.), we recommend routing the combu-
stion air according to point 2.3.2 Operating independently of the room air. This means it is possible to decouple the
combustion air from the air conditions in the installation room to a large extent.
In addition, the device is equipped as standard with a pressure monitoring device in the fire box in order to guaran-
tee safe operation of the device.
Note!
There may be an induction noise from the air supply induction point (air opening in the device),
depending on the modulation. The noise can be transferred outside or into an adjacent room by
relocating the air supply induction point.

11
2. For the Installer
2.3.2 Operating independently of the room air:
(Combustion air supply from ventilation draught in the chimney)
This variant is to be preferred over operating with room air, because it ensures that there will always be sufficient
combustion air and that the induction noise during operation will be transferred to the outside. The accessory
FIRE 024 is required for this operation.
The combustion air is drawn in through an unobstructed ventilation draught in the chimney – Figs. 3, 4. The ope-
nings for the intake air and the flue gas are only allowed to be located with a square with a 500 mm side length.
This ensures that the same air pressure always prevails in the openings (even in very windy conditions).
Only flue gas systems that have been tested and approved for solid fuel applications may be used.
The lengths stated are only a guideline and should not take the place of an actual flue calculation.
pellet boiler FireWIN 90/120
Max. induction length
(Air intake) 9 m, each 90° bend reduces the length by 1 m
Air intake
cross-section
min Ø 75 mm
(or technically equivalent cross-section)
Combustion air line
(Air intake)
DN 80
Seal integrity: min. 0.1 m3/h at 0.1 mbar ; temperature resistance: 95 °C
(standard plastic discharge lines with correctly fitted seal)
Connecting piece
(Flue gases)
Max. length 3 m,
only use lines with minimum classification according to EN 1851-1:
T200 H1 D V2 L(xxxx) G(xx)
Shaft head Tested wind protection fixture or design in accordance with DIN V 18160-1 – Fig. 3.
Air/flue gas system
(sketch Fig. 5)
Configuration as equal-pressure system
(induction opening for air intake and opening for flue gas discharge are
within a square with a max. edge length of 0.5 m)
Required accreditations: for solid fuels; moisture-resistant
Swinging draught flap,
explosion flap
Energy-saving intake regulators or explosion flaps are not allowed to be installed
in the living area. Comply with the statutory regulations and directives.
The connection for the connecting piece on the chimney should be designed such that the condensate is preven-
ted from flowing from the chimney back into the connecting piece.
Please note for Germany!
Only chimneys with general technical approval, classified as W3G according to DIN V 18160 Part 1
may be used.

12
2. For the Installer
55
66
Hearth with flue gas blower to DIN 18897-1 (type FX42X) for connection to a pressure-equal air/flue
gas system
Examples of models:
Air/flue system with parallel sup-
ply air/flue layout
Air/flue system with concentric supply air/
flue layout
1...........Pellet boiler
2...........Combustion air line (Air intake)
3...........Connecting piece (Flue gases)
4...........Air/flue gas system
Detail X, Y
Opening (shaft head in ac-
cordance with DIN V 18160-1)
Dh........ flue gas diameter
HÜ .......spacing of opening
hA ........spacing of dispersion plate
e...........protrusion of dispersion plate
5...........Flue gases
6...........Combustion air (Air intake)
Fig. 3 Sketch of ventilation draught in flue
Requirements:
HÜ≥ 2 x Dh
hA= min. 10 cm
e= 0 cm to 8 cm
Requirements:
HÜ≥ Dh
hA= min. 10 cm
e= 0 cm to 8 cm

13
2. For the Installer
2.4 Taking in
FireWIN is delivered without cladding (door, cover, side panels) on a pallet, without wood partitions. The cladding
parts are in a separate cardboard box. The taking-in weight is less than 200 kg, the taking-in width is 55 cm.
2.5 Installation
2.5.1 Installation room
Basically, any room with normal air humidity and living space temperature in the living area is suitable for instal-
lation, providing it has a flue connection with an adequate draught (see technical data for flue requirements) and
satisfies the statutory regulations and directives.
The installation room should not be too small otherwise the room could be overheated by the heat radiation. The
recommended rule of thumb is: The installation room should account for at least 15% of the area to be heated.
Note!
Due to the operating and flame noises, we do not recommend installing the device in bedrooms or
quiet rooms.
– The minimum service clearances from flammable materials and for connections, cleaning and maintenance
must be complied with – see point 2.6 Minimum service clearances.
– FireWIN must be placed directly on a non-flammable base plate (e.g. floor plate accessory).
– Sufficient ventilation of the set-up area must be assured see section 2.3 Verbrennungsluft combustion air.
– The boiler may only be installed in a dry location.
– The boiler may not be installed in rooms that are very dusty or humid.
Permissible limit values: Air humidity: 85 % at 25°C room temperature (noncondensing)
Room temperature +2 to 40°C

14
2. For the Installer
2.5.2 Heat radiation
The viewing panel of the FireWIN means it is inevitable that heat will be radiated into the installation room.
The distribution of heat between air and water heating is approx. 15 : 85 % without the heat shield and approx.
9:91% with the heat shield (accessory FIRE 023).
The following should be noted:
– Heating domestic water in summer:
Heat radiation always heats up the installation room when domestic water is being heated. Although the
amount of radiated heat can be significantly reduced by using the patented heat shield (accessory FIRE 023),
it can never be totally prevented.
This means it may not be possible to rule out overheating the installation room on hot days and, above all,
during the summer months.
To remedy this, we recommend heating domestic water using an alternative system such as solar.
– Heating surfaces/radiators in the installation room:
The heat radiation from FireWIN has been reduced to the minimum necessary, therefore a corresponding
heating surface or radiator should also be installed in the installation room. Heating surfaces in the instal-
lation room are essential when the system is combined with alternative heat generators (solar, accumulator
tank or solid fuel boiler) – Fig. 4.
We recommend using thermostat heads in the installation room.
– Minimum room size:
FireWIN very rapidly provides the necessary amount of heat at very low building heat demands or in autumn/
spring. Despite the fact that the boiler quickly reduces its output to the minimum level or actually switches
itself off entirely, there will nevertheless be a corresponding amount of heat radiation into the installation
room.
This means it may not be possible to rule out overheating the installation room on hot days and, above all,
during the autumn/spring.
As a remedy, we recommend having an installation room with a minimum size of approx. 15 % of the entire
area to be heated) – Fig. 4.
Fig. 4 FireWIN in an installation room (more than approx. 15 % of the entire area to be heated)

15
2. For the Installer
2.6 Minimum service clearances for fire protection, cleaning
and maintenance
The following minimum service clearances from flammable materials and for connections, cleaning and main-
tenance must be complied with.
Fig. 5 Tested masonry feed-throughs for exhaust pipe
Attention!
The configuration of the entire system must comply with technical fire protection requirements in
accordance with the applicable regulations, standards and guidelines.
Multi-layer flammable wall Multi-layer flammable wall Non-flammable wall
Multi-layer flammable wall
There must be a gap of 200 mm from flammable
components all round the exhaust pipe.
B
C
A C A C A C A C
B
A
Fig. 6 Tested masonry feed-throughs for exhaust pipe
All dimensions in mm:
1...........Concrete fill
2...........Lining pipe
3...........Cavity fill with non-flammable material
(e.g. rock wool)
4...........Non-flammable cover
5...........Exhaust pipe insulation 20 mm
techn. data of insulation:
– Mineral wool insulation
– Melting point: > 1000 °C
– Thermal conductivity: < 0.04 W/mK
– Minimum thickness: 20 mm
6...........Multi-layer flammable wall
7...........Flue
2.6.1 Masonry feed-throughs for the exhaust pipe
Examples of masonry feed-throughs tested by the IBS – Institut für Brandschutztechnik und Sicherheitsfor-
schung (Institute for Fire Protection Technology and Safety Research)

16
2. For the Installer
2.6.2 Minimum service clearances with flue gas tube connection
straight back
Dimension Clearance Description
a 800 mm Minimum clearance in radiation area (front window) from flammable materials
b 600 mm Minimum lateral clearance from non-movable objects (e.g. wall)
c 50 mm Minimum lateral clearance from movable objects (e.g. furniture)
f
400 mm Minimum clearance from flammable walls with non-insulated exhaust pipe
200 mm
Minimum clearance from flammable walls with insulated exhaust pipe (20 mm)2
Minimum clearance from flammable walls with tested double-walled insulated
exhaust pipe, acc. to accreditation of connecting piece3
Note!
The intake air line must be non-flammable (e.g. flexible aluminium tube) if the exhaust pipe is unin-
sulated.If the walls are non-flammable, there are no fire protection reasons for a minimum service
clearance from the exhaust pipe and no need to insulate the exhaust pipe.
1)
Fig. 7 FireWIN – view from above
AB........Cover plates (accessories:
FIRE 025 or FIRE 026)
1 When the fully automated feed unit FIRE 040 is installed subsequently, the pellet flue-connected boiler must be closed again by a heating expert. Subsequent
installation is highly complicated and can only be done by our customer service, with charging based on the actual work done.
2 Technical data for exhaust pipe insulation: Mineral wall insulation; melting point: >1000 °C; thermal conductivity: < 0.04 W/mK
3 The minimum service clearance is determined by the design specifications (Ø of the double pipe) of the flue gas system used or the minimum service clea-
rances demanded in the accreditation.

17
2. For the Installer
2.6.3 Minimum service clearances with flue gas tube connection to the
left or right side
Dimensi-
on
Clearance Description
a 800 mm Minimum clearance in radiation area (front window) from flammable materials
b 600 mm Minimum lateral clearance from non-movable objects (e.g. wall)
c 50 mm Minimum lateral clearance from movable objects (e.g. furniture)
d1
>500 mm Minimum clearance from flammable walls with non-insulated exhaust pipe
>305 mm Minimum clearance from flammable walls with insulated exhaust pipe (20 mm)2
>210 mm3
>250 mm3
Minimum service clearance from flammable walls, flue connection to left or right
and tested double-walled insulated exhaust pipe 3
>140 mm Minimum service clearance from non-flammable walls, flue connection to left or right
f
400 mm Minimum clearance from flammable walls with non-insulated exhaust pipe
200 mm Minimum clearance from flammable walls with insulated exhaust pipe (20 mm)2
>50–70 mm3Minimum clearance from flammable walls with tested double-walled insulated
exhaust pipe, acc. to accreditation of connecting piece3
Note!
The intake air line must be non-flammable (e.g. flexible aluminium tube) if the exhaust pipe is
uninsulated. If the walls are non-flammable, there are no fire protection reasons for a minimum
service clearance from the exhaust pipe and no need to insulate the exhaust pipe.
1)
Fig. 8 FireWIN – view from above
1 When the fully automated feed unit FIRE 040 is installed subsequently, the pellet flue-connected boiler must be closed again by a heating expert. Subsequent
installation is highly complicated and can only be done by our customer service, with charging based on the actual work done.
2 Technical data for exhaust pipe insulation: Mineral wall insulation; melting point: >1000 °C; thermal conductivity: < 0.04 W/mK
3 The minimum service clearance is determined by the design specifications (Ø of the double pipe) of the flue gas system used or the minimum service clea-
rances demanded in the accreditation.

18
2. For the Installer
2.7 Dimensional sketches
2.7.1 FireWIN flue gas and air supply connection
Fig. 9 FireWIN flue gas and air supply connection
All dimensions in mm:
A..........Flue gases
Z..........Air intake
Front view
Side view
Fig. 10 FireWIN flue gas connection – standard Fig. 11 FireWIN flue gas connection – accessories:
AZB 057, AZB 055
Standard: Accessories – AZB 057, AZB 055 for exhaust pipe
connection in the middle:
1...........Double exhaust pipe
bend rigid – AZB 057
2...........Pipe clamp – AZB 055

19
2. For the Installer
2.7.2 FireWIN without heating fittings
Note!
When using the FIRE 025 and 026 covering screens, all connections must be positioned under the
exhaust pipe because the covering screens are fully closed above the exhaust pipe.
Fig. 12 FireWIN without heating fittings
All dimensions in mm:
HV.......Heating feed (3/4” pipe)
HR.......Heating return (3/4” pipe)
Front view Side view
2.7.3 FireWIN – UAM
with energy-saving circulation pump, expansion tank 12 l, motorised mixing valve, safety valve and pressure
gauge
Note!
When using the FIRE 025 and 026 covering screens, all connections must be positioned under the
exhaust pipe because the covering screens are fully closed above the exhaust pipe.
Fig. 13 FireWIN UAM
All dimensions in mm:
HV.......Heating feed (3/4” sleeve)
HR.......Heating return (3/4” pipe)
Front view Side view

20
2. For the Installer
2.7.4 FireWIN – UAML
with energy-saving circulation pump, hot water tank feed pump with gravity brake, expansion tank 12 l, moto-
rised mixing valve, safety valve, pressure gauge and non-return valve for heating circuit
Note!
When using the FIRE 025 and 026 covering screens, all connections must be positioned under the
exhaust pipe because the covering screens are fully closed above the exhaust pipe.
Fig. 14 FireWIN UAML
All dimensions in mm:
HV........ Heating feed (3/4” sleeve)
HR .......Heating return (3/4” pipe)
BV........ Boiler feed (3/4” pipe)
BR........Boiler return (3/4” pipe)
Front view Side view