KOB PYROT KRT 150 Troubleshooting guide

KRT 150 to KPT 1250
Wood Fired Boiler
Heating output: 150 to 540 kW / 512 to 1843 MBH
Min operation output: 45 to 140 kW / 154 to 478 MBH
Operation and Maintenance Instructions
KÖB IS A ART OF THE VIESSMANN GROU .
yrot oi/ mi 11/2008
Do not store or use gasoline or other lammable
uids in the vicinity o this or any other appliance.
WHAT TO DO IF YOU SMELL FLUE GAS


 Deactivate heating equipment


 Open windows and doors.


 In orm your heating contractor
Installation and service must be per ormed by a
installer or service agency
I the in ormation in this manual is not ollowed
exactly, a ire o r explosion may result causing
property damage, personal injury or loss o li e.
WARNING
Improper installation, adjustment, and/or
operation
could cau se carbon monoxide poisoning
resulting
in injury or loss o li e.
This product must be installed and serviced by
am
pro essional s ervice technician who i s
experienc
ed
IMPORTANT
Read and save these instructions
For uture re erence.
WARNING
PYROT

2
Sa ety, Installation and Warranty Requirements
lease ensure that these instructions are read and understood before commencing installation. Failure to comply
with the instructions listed be low and detail sprinted in t hi s manual can cause product / property / damage,
severe personal injury’, and / or loss of life. Ensure all requirements be low are understood and fulfilled (including
detailed information found in manual subsections).
 Licensed’ pro essional’ heating
contractor
The installation, adjustment,
service,
and maintenance of this equipment
must be performed by a licensed
professional heating contractor.
" Please see section
entitled “Important
Regulatory and
Installation
Requirements”.
 Product documentation
Read all applicable documentation
before commencing installation.
Store
documentation near boiler in a
readily
accessible location for reference in
the future by service personnel.
" For a listing of
applicable literature,
please see section
entitled “Important
Regulatory and Safety
Requirements”.
 Advice to owner
Once the installation work is
complete, the heating contractor
must
familiarize the system
operator/ultimate owner with all
equipment, as well as safety
precautions/requirements, shut-
down
procedure, and the need for
professional service annually before
the heating season begins.
 Contaminated air
Air contaminated by chemicals can
cause by-products in the
combustion
process which are poisonous to
inhabitants and destructive to
Viessmann equipment.
" For a listing of
chemicals which cannot
be stored in or near the
boiler room, please see
subsection entitled
“ ombustion air supply”.
 Carbon monoxide
Improper installation, adjustment,
service and/or maintenance can
cause
flue products to flow into living
space.
Flue products contain poisonous
carbon monoxide gas.
" For information
pertaining to the proper
installation, adjustment,
service and maintenance
of this equipment to
avoid formation of carbon
monoxide,
please see instructions supplied with
burner.
 Fresh air
This equipment requires fresh air for
safe operation and must be installed
ensuring provisions for adequate
combustion and ventilation air exist.
" For information
pertaining to the fresh
air requirements of this
product, please see
subsection entitled
“ ombustion air supply”.
 Equipment venting
Never operate boiler without an
installed venting system. An
improper
venting system can cause carbon
monoxide poisoning.
" For information
pertaining to venting
and chimney
requirements, please
see section entitled “Venting
onnection”. All products of
combustion must be safely vented
to
the outdoors.
 Warranty
Information contained in
this and related product
documentation must be
read and followed. Failure
to do so renders warranty
null and void.

3
Sa ety, Installation and Warranty Requirement
 Fiberglass wool and ceramic iber
Materials
The state of California has listed the
airborne fibers of these materials as
a
possible cancer hazard through
inhalation. When handling these
materials, special care must be
applied.
Suppliers of ceramic fiber products
recommend the following first aid
measures:
- Respiratory tract (nose and throat)
irritation
If respiratory tract irritation
develops,
move the person to a dust free
location.
- Eye irritation
If eyes become irritated, flush
immediately with large amounts of
lukewarm water for at least 15
minutes. Eyelids should be held
away
from the eyeball to ensure thorough
insing. Do not rub eyes.
- Skin irritation
If skin becomes irritated, remove
soiled clothing. Do not rub or
scratch
exposed skin. Wash area of contact
thoroughly with soap and water.
Using a skin cream or lotion after
washing may be helpful.
- Gastrointestinal irritation
If gastrointestinal tract irritation
develops, move the person to a dust
free environment.
Suppliers of fiberglass wool
products
recommend the following
precautions
be taken when handling these
materials:
Precautionary measures
- Avoid breathing fiberglass dust
and
contact with skin and eyes.
- Use NIOSH approved dust/mist
respirator.
- Wear long-sleeved, loose fitting
clothing, gloves and eye protection.
- Wash work clothes separately
from
other clothing. Rinse washer
thoroughly.
- Operations such as sawing,
blowing,
tearout and spraying may generate
airborne fiber concentration
requiring
additional protection.
First aid measures
- If eye contact occurs, flush eyes
with
water to remove dust. If symptoms
persist, seek medical attention.
- If skin contact occurs, wash
affected
areas gently with soap and warm
water after handling
 Hazardous materials

4
Sa ety, Installation and Warranty Requirement


Take note of all symbols and notations intended to draw attention to potential hazards or important
product information. These include ”WARNING”, ”CAUTION”, and ”IMPORTANT”. See below im
portant product information.
 Warnings draw your
attention to the
presence of potential
hazards or
information.
 Cautions draw your
attention to the
presence of potential
hazards or
important product
information.
 Helpful hints for Installation,
operation or maintenance
which pertain to the product.
 This symbol indicates that addi-
tional, pertinent Information is
to be found in the adjacent
column
 This symbol indicates that
other instructions must be refer-
enced.


5
Contents
1 General In ormation________________________________________________________7
1. Sa tey Requirements ____________________________________________________________________7
1.1 Foreword_____________________________________________________________________________ 11
1.2 Technical standing _____________________________________________________________________ 11
1.3 Intended use __________________________________________________________________________ 11
1.4 Technical data_________________________________________________________________________ 11
1.5 In ormation documented________________________________________________________________ 11
1.6 CSA and ASME certification _________________________________________________________ 11
2Important Information _____________________________________________________________12
2.1 Sa ety instructions_____________________________________________________________________ 12
2.2 Excess temperature/power ailure _______________________________________________________ 12
2.3 Low water/excess water pressure _______________________________________________________ 12
2.4 A ire hazard __________________________________________________________________________ 13
2.5 Wood uels, minimum requirements _____________________________________________________ 13
2.6 Filling the uel storage unit______________________________________________________________ 13
2.6.1 By dumping ___________________________________________________________________________ 13
2.6.2 By blowing in__________________________________________________________________________ 13
2.7 Correcting mal unctions in the eed systems _____________________________________________ 13
3 How the Boiler Plant is Strucured _________________________________________ 14
4 Commissioning/Operation ________________________________________________ 15
4.1 The initial start-up _____________________________________________________________________ 15
4.2 Operation _____________________________________________________________________________ 15
4.2.1 Heating up ____________________________________________________________________________ 15
4.2.2 Operation _____________________________________________________________________________ 15
4.2.3 Switching off _____________________________________________________________________15
5 The ECOTRONIC control system__________________________________________ 16
5.1 General in ormation ____________________________________________________________________ 16
5.1.1 Replacing the battery __________________________________________________________________ 16
5.2 The unctions o the keys ______________________________________________________________ 16
5.3 Boiler and loader system (F3/F4) ________________________________________________________ 17
5.3.1 The F3 KEY: " YROT arameters" ______________________________________________________ 17
5.3.2 The F4 KEY: " YROT Loader System" ___________________________________________________ 18
5.4 Extended control systems F5 – F8 (optional) _____________________________________________ 19
5.4.1 Room heating system __________________________________________________________________ 19
5.4.2 Utility water heater ____________________________________________________________________ 21
5.4.3 Air heater _____________________________________________________________________________ 22
5.4.4 Annex buildings _______________________________________________________________________ 23
5.4.5 ipelining _____________________________________________________________________________ 24
5.4.6 Additional heat generator_______________________________________________________________ 25
5.4.7 Solar__________________________________________________________________________________ 26

6
6 Cleaning/Maintenance ___________________________________________________ 27
6.1 Boiler _________________________________________________________________________________ 27
6.2 Installing the displacement rods into the heat exchanger __________________________________ 29
6.3 Feed systems__________________________________________________________________________ 30
7 Shutdown ______________________________________________________________ 30
8 Carrying out disposals ___________________________________________________ 30

7
1 General In ormation
1.1 Important Regulatory and Sa ety Requirements


 Operation
Before operating the boiler, make sure you fully un-
derstand its method of operation. Your heating con-
tractor should always perform the initial start-up and
explain the system. Any warranty is null and void if
these instructions are not followed.


 Working on the equipment
All personnel working on the equipment or the heat-
ing system must have the proper quali ications and
hold all necessary licenses.
Ensure main power to equipment, heating system,
and all external controls has been deactivated. Close
main oil or gas shut-o valve. Take precautions in
all instances to avoid accidental activation of power
during
service work.


 Dangerous conditions
– Deactivate main power immediately.
– Close main gas or oil shut-off valve.


 Flue gas smell
– Deactivate heating equipment.
– Open windows and doors.
– Inform your heating contractor.

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 Combustion air and ventilation air openings
Ensure that combustion air openings and ventilation
air openings in the mechanical room are open.
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 Technical in ormation
Literature applicable to the YROT:
– Installation Instructions
– Operating Instructions
Keep all literature in a sa e place at the installation
site. Contact Viessmann or additional copies.
Incomplete combustion and
)
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
 Regular maintenance and service
The entire heating system must be cleaned and ser-
viced on a regular basis by a qualified heating
contractor or service agency to ensure reliable,
energy-efficient, and environmentally
friendly operation.
The build-up of soot on the heat exchanger raises
the flue gas temperature and reduces efficiency.
Indirect-fired domestic hot waterstorage tanks (if in-
stalled) must be serviced within two years (at most)
of the installation date, and regularly thereafter (see
Service Schedule starting).
For an overview of scheduled service procedures,
please see section entitled “Service Schedule”.

8
Keep boiler and boiler room clear and ree rom
combustible materials, gasoline and other lammable
vapors and liquids. Do not obstruct the low o
combustion and ventilation air. A quali ied heating
contractor must per orm all inspection, maintenance
and service.


 Important to know
Do not use this boiler if any part has been under, or
exposed to, water. Immediately call a qualified heat-
ing contractor to inspect the boiler and to replace
any part of the control
system and any gas control which has been under,
or exposed to water.


 Carbon monoxide
The U.S. Consumer roduct Safety
Commission strongly recommends the installation of
carbon monoxide detectors in buildings in which
gas-burning equipment is installed.
Carbon monoxide (CO) is a colorless, odorless gas,
which may be produced during incomplete combus-
tion of fuel and/or when the flame does not receive
an adequate supply of combustion air.
Carbon monoxide can cause severe personal injury
or loss of life.
Therefore, carbon monoxide detectors that are in
compliance with a nationally recognized standard
(e.g. ANSI/UL 2034-2002, CSA 6.19-01) should be
installed and maintained in buildings that contain
gas-burning equipment.
Note:
Viessmann does not test any detectors and makes
no representation regarding any brand or type of de-
tector.


 For sa e operation
We recommend that you frequently:
- Check for debris which could obstruct the flow of
flue gases. The vent or chimney must not be
blocked. Ablocked or partially blocked vent or chim-
ney can cause flue gases to leak
into the structure. Flue gases leaking into the house
can cause injury or death. Blocked or partially
blocked chimneys must have the blockage removed
by a qualified heating contractor.
- Check pressure gage for correct system (water)
pressure. Check for water on the floor from the dis-
charge pipe of the pressure relief valve or any other
pipe, pipe joint, valve or air
vent.
- Check for moisture, water, or appearance of rust
on the flue gas pipes, their joints as well as vent
dampers, or side wall vent terminals
(if so equipped).
- Ensure that nothing is obstructing the flow of
combustion and ventilation air and no chemicals,
garbage, gasoline, combustible materials, flammable
vapors and liquids are stored (not even temporarily)
in the vicinity of the boiler.
- Do not allow unsupervised children near the boiler.
Service/inspection of the boiler and the system is
recommended once a year. Maintenance, service
and cleaning are specified in the Installation Instruc-
tions.

9
a ety (continued)
Frozen water pipe hazard
Your heating boiler is designed to provide
a warm and comfortable living environment. It is
NOT designed to ensure against freezing of water
pipes. The boiler is equipped with several safety de-
vices that are designed to shut down the boiler and
to prevent it from
restarting in the event of various unsafe
conditions.
If your boiler remains off for an extended period of
time during cold weather, water pipes may freeze
and burst, resulting in extensive water damage and
conditions in which mold could grow. Certain molds
are known to cause respiratory problems, as well as
to pose other serious health risks. In case of water
damage, immediate measures should be taken to dry
out affected areas as quickly as possible to prevent
mold from developing.
If your home will be unattended for anextended pe-
riod of time during cold weather, you should...


 Shut off the water supply to the building, drain
the water pipes and add antifreeze for potable water
to drain traps and toilet tanks. Open faucets where
appropriate.
Or…


 Have someone check the building frequently dur-
ing cold weather and call a qualified service agency
if required.
Or...


 Install a reliable remote temperature sensor that
will notify somebody offreezing conditions within
the home.
Failure to protect against rozen pipesa ety
I you notice ire coming rom the appliance, call the
ire department immediately! Do not attempt to ex-
tinguish the ire unless quali ied to do so.


 Installation area conditions


 Ensure ambient temperatures are higher than
50°F / 10°C and lower than 104°F / 40°C.


 revent the air from becoming contaminated by
homogenate hydrocarbons (e.g. as contained in
paints solvents or cleaning fluids) and excessive
dust (e.g. through grinding or polishing work).
Combustion air for the heating process, and ventila-
tion of the boiler room must be free of corrosive
contaminants. To that end, any boiler must be in-
stalled in an area that has no chemical exposure.
The list to the right indicates the main, currently
known sources.


 Avoid continuously high levels of humidity (e.g.
through frequent drying of laundry).


 Never close existing ventilationopenings.
Replacement components, spare and wear parts.

10
Components, which are not tested with the heating
system may damage the heating system, or a ect
its unctions. A quali ied heating contractor may
only carry out installation or replacement.
Sources o combustion and ventilation air
contaminants


 Areas likely to contain contaminants:
 New building construction
 Swimming pools
 Remodeling areas, hobby rooms
 Garages with workshops
 furniture refinishing areas
 Dry cleaning/laundry areas and establishments
 Auto body shops
 Refrigeration repair shops
 Metal fabrication plants
 lastic manufacturing plants
 hoto processing plants
 Beauty salons


Products containing contaminants:
 Chlorine-type bleaches, detergents and
cleaning solvents found in household laundry rooms
 aint and varnish removers
 Hydrochloric acid, muriatic acid
 Chlorine-based swimming pool
chemicals
 Spray cans containing chlorofluorocarbons
 Chlorinated waxes and cleaners
 Cements and glues
 Refrigerant leaks
 Calcium chloride used for thawing
 Sodium chloride used for water softening salt
 ermanent wave solutions
 Adhesives used to fasten building products and
other similar items
 Antistatic fabric softeners used in clothes dryers


 Product in ormation
High e iciency with reduced emissions
Viessmann solid-fuel boiler may only be set up and
commissioned by specialists. This will rule out any
incorrect assembly or commissioning. These instruc-
tions have thus been reduced to important technical
data, references to regulations, technical rules and
other regulations.
Steel - wood fired hot water heating boiler.
For operation with modulating boiler water tempera-
tures in closed and open loop forced circulation hot
water heating systems.
The yrot KRT boilers are certified the CAN/CSA
B366.1-M91 and UL 391.
The boiler model selected should be based on an
accurate heat loss calculation of the building. The
boiler selected must be complete with the con-
nected radiation.
Maximum working pressure 30 or 60 psig
Maximum boiler temperature 250 °F
(closed loop)
Maximal boiler temperature 290 °F
(open loop)
This boiler does not require a flow switch.


 For optimum operation
To ensure optimum operation of your heating sys-
tem do the following:


 Keep the boiler and the boiler room clean and
free of dust and dirt.
Ensure proper and adequate system pressure by oc-
casionally checking the pressure gage.


 Have a qualified heating contractor service and
maintain your heating system on a regular basis.
See Service Schedule.
The boiler must not be located in

11
1.1 Foreword
Dear System Owner, you have made a good selection in
the YROT. It will provide you with all the advantages of
a modern, economically efficient heating system. Fully
developed technology in combination with a sturdy design
guarantees a high degree of operational reliability and a
long service life.
These Operating and Maintenance Instructions contain im-
portant information for the intended use, correct operation
and proper maintenance of the YROT.
Non-compliance with the Operating and Maintenance In-
structions will result in loss o the guarantee.
If you still need any further information after studying the
Operating and Maintenance Instructions:
The Assembly and Installation Instructions contain impor-
tant information about:
- Standards and regulations
- Structural surroundings of the boiler plant
- Transport and assembly
- Water installation and electrical installation
- Fire protection
- Commissioning
as well as an appendix with diagrams of connections and
dimensions and the complete technical specifications.
Our sales and services offices will be glad to provide you
with any further information. Their addresses can be
found on the reverse side of these Operating and Mainte-
nance Instructions.
1.2 Technical standing
The Operating and Maintenance Instructions are in keeping
with the YROT at the time it is delivered. In the interest
of our customers, we reserve the right to make, without
any notification requirement, subsequent changes result-
ing from further technology developments.
1.3 Intended use
The intended use of the YROT is for incinerating wood
fuels.
The intended use of the YROT is stipulated:
- in the regulations of the Assembly and Installation In-
structions
- by the limits of the technical specifications
- in Spec Sheet 1010 "Minimum Requirements for Wood
Fuels/Instructions"
- by the safety regulations in these Operating and
Maintenance Instructions.
Any other use of the YROT or use of it going beyond this
will be considered as unintended use unless written ap-
proval by the manufacturer has been obtained.
- Operation of the YROT by unqualified personnel,
without any training or knowledge of the Operating
and Maintenance Instructions.
- Disabling the safety or monitoring devices on the Y-
ROT.
- Removal of any protective covers or cladding on the
YROT by unauthorised individuals.
- Making any conversions or alterations to the YROT
without approval by the manufacturer.
- Using spare parts or accessories from other
manufacturers without approval by the manufacturer.
The operating organisation will be liable or any damage or
accidents in case o any unintended use.
1.4 Technical data
The following important limit values apply to the YROT
heating boiler:
Maximum working pressure 30 or 60 psig
Maximum boiler temperature 250 °F
(closed loop)
The complete technical specifications are listed in the ap-
pendix of the Assembly and Installation Instructions.
1.5 In ormation documented
The installation instructions contain the information re-
quired according to the subject boilers have been tested
and examined in accordance with:
CSA B366.1-M91
Solid Fuel Fired Central Heating Appliances
CSA C.22.2#3-M88(R2004)
Electrical Features of Fuel Burning Equipment
UL391 (4thEd)
Solid Fuel and Combination-Fuel Central and Supplemen-
tary Furnaces
CSA B365-01
Installation Code for Solid Fuel Burning Appliances and
Equipment
1.6 CSA and ASME certi ication
The YROT is delivered with a CSA and ASME on its Rat-
ing plate.

12
2 Important In ormation
2.1 Sa ety instructions
When carrying out work on the heating system, such as
cleaning and maintenance, wear appropriate protective
equipping when required.
There is a danger o getting injured through: burning,
knocking against corners and edges, crushing in moving
parts and noise.
Mains supply: 120V or 240V/1/ and 208V/3/ 60Hz
In a risky situation, the YROT can be disconnected from
the electrical mains at all the leads by the master switch
on the control cabinet
Doors
For safety keep firing and ashpit doors tightly closed.
CAUTION
FIRE HAZARD:
The boiler must never be operated with the doors open!
Any burning bits that escape could start ire.
RISK OF INJURY:
I the doors are open during operation, sparks or lames
could leap out.
Equipment or dissipating excess heat
A competent specialist should examine the operational re-
liability of the thermal run-off safety valve annually. The
safety heat exchanger must not by any means be used as
an operational heat exchanger.
Seals
For the functioning and controllability of the burner, it is
important that no unwanted air can leak in, entering un-
checked through leaky spots.
The doors and lids have to shut tight −
−−
− any damaged seals
must be replaced immediately. Tighten the retaining
screws and handles snugly.
Operation, cleaning & maintenance
Bear in mind that only if operated and maintained properly
can even the best of products fulfil their functions well,
doing so for a long time and free of malfunctions.
Compliance with the "Cleaning" section is mandatory!
2.2 Excess temperature/power ailure
CAUTION
DANGER OF THIS SUDDENLY GOING UP IN FLAMES:
Do not open the doors or lids on the boiler plant!
- Switch on additional heat loads.
- The flue gas fan goes out of operation.
- The temperature-limiting safety switch triggers.
- The valve for the thermal run-off safety valve opens at
approx. (95°C) 203° F. The excess heat is conducted
off into the channel.
I the temperature-limiting sa ety switch (FHL) has trig-
gered, then it has to be manually unlocked. The FHL is
situated at the top o the boiler.
To reset, unscrew the black cap and press the button.
NOTE: Only as of a temperature of approx. (70°C) 158°F
resetting is possible.
ossible causes for excess temperature:
- Incorrect setting on the control module.
- Defective component of the system (pump or valve).
- Sudden drop in output to zero. The feed auger still has
to be emptied. The heat yet produced by this can re-
sult in surplus temperature. Activate "DISSI ATE
SUR LUS HEAT" function!
2.3 Low water/excess water pressure
ossible causes:
1. Low water: Leakage in the heating system.
2. Excess water pressure: The expansion tank not
functioning.
In either case, should the boiler examined by a competent
heating constructor.
Unlock this mal unction with either the reset button or
the water level control system or or the overpressure
monitor, and by pressing the OK key on the control panel.

13
2.4 A ire hazard
With insertion-type firing systems, the conveying route
creates a connection between the silo and the burning ma-
terial in the boiler plant.
With the YROT insertion-type heating boiler, the feed au-
ger is also the metering auger, and is thus always filled up
with material during operation There are various safety
devices provided to prevent burn-back.
Temperature sensors:
By means of temperature sensors on the feed auger, in
case of excess temperature the loading to the feed auger
is interrupted, and the feed auger's material is inserted
into the combustion chamber.
Slide valve (optional):
This closes in case of a standstill, danger of burn-back or
power failure (spring return motor).
valve (optional):
Instead of a slide valve, in silos with pressurisation.
Drop-off route:
A vertical drop-off section interrupts the connected line of
burning material.
Fire-extinguishing system (option):
This system, which functions independently of the electri-
cal power, brings about a flooding of the material to be
burned that is located in the feed auger. The activation
temperature is approx. (95°C) 200°F.
2.5 Wood uels, minimum requirements
The YROT is only suitable for incinerating the fuels listed
in Spec Sheet 1010 "Minimum Requirements for Wood
Fuels" (see supplement).
I di erent uels are used, Viessmann will not assume any
liability or the unctioning or service li e o the boiler
plant. Re er to the "Warranty" section in the General
Terms and Conditions o Delivery.
- Born wood only
- Do not use chemicals or fluids to start fire.
- Do not burn garbage, gasoline, naphtha, engine oil, or
other inappropriate materials.
2.6 Filling the uel storage unit
When storage facilities for wood are required, the wood
should be kept at least (1.5m) 5ft from the heating appli-
ance.
2.6.1 By dumping
Rotary sweep extraction and spring-operated extraction
Heating system in operation:
- If the articulated arms or spring-mounted plates are still
covered by fuel, refilling can be carried out immedi-
ately.
- If the articulated arms or spring-mounted plates are no
longer covered by fuel, fill the silo evenly to approx.
(30 cm) 1ft above the articulated arm or over the
spring-mounted plates. As soon as the articulated
arms or spring-mounted plates have retracted through
a request for material, the refilling can be continued.
Heating out of operation:
- If the articulated arms or spring-mounted plates are still
covered by fuel, refilling can be carried out immedi-
ately.
- If the articulated arms or spring-mounted plates are no
longer covered by fuel, fill the silo evenly to approx.
(30 cm) 1ft above the articulated arm or over the
spring-mounted plates. Then activate the "SILO FILL-
ING" function. To do so, press the LOADER SYSTEM
key (F4) and then the left arrow key (<). Then select
"YES" and confirm with "OK". Wait until the articu-
lated arms or the spring-mounted blades go under the
cup washer, and then finish evenly filling the silo. The
"SILO FILLING" function brings about the filling of the
fire box.
NOTE: The "SILO FILLING" unction cannot be activated
until the heating system has been out o operation or one
hour.
Moving loor conveyor
- Fuel can be refilled automatically.
Funnel extraction system
- It is mandatory that the heating system be in opera-
tion!
2.6.2 By blowing in
The heating system has to be out o operation (danger o
excess pressure or negative pressure caused by the action
o blowing-in). Filling procedure as described in section
2.6.1.
2.7 Correcting mal unctions in the eed systems
The cause of motor malfunctions in feed systems is usu-
ally clogging by large pieces of wood or foreign matter.
CAUTION
DANGER OF INJURY:
Always turn o the master switch be ore carrying out any
repair o a mal unction on eed systems and every time
be ore a maintenance lid is opened or a protective device
is removed!
The automatic operation of the system makes it impossi-
ble to foresee the time point when the conveying equip-
ment will switch on.

14
3 How the Boiler Plant is Strucured
(Illustration: YROT 300)
(1) Feed auger with isolating layer
(2) Drive for moving grate
(3) Automatic ignition device
(4) Controlled combustion air supply system
(5) Moving grate
(6) Drive for automatic de-ashing system (optional)
(7) Rotation fan (Viessmann-patented)
(8) Rotation combustion chamber (Viessmann-pat ented)
(9) Boiler heat exchanger
(10) Boiler door
(11) Heat exchanger for thermal run-off safety valve
(12) Speed-controlled exhaust fan
(13) Recirculated flue gas pipe (optional)
(14) Automatic cleaning system (optional)
12
11
1
2
3
4
5
6
7
8
9
10
13
4
14

15
4 Commissioning/Operation
4.1 The initial start-up
Only Viessmann or another trained specialist may put a
newly installed facility into operation for the first time.
Be absolutely sure to ollow the instructions in the As-
sembly and Installation Instructions. No warrenties may be
claimed or damages in cases o initial start-ups carried
out improperly at one's own initiative.
First check:
- Is there enough water in the heating system?
- Has the heating system been bled of air?
- Are the slide valves open for the heating-system's
forward and reverse flow?
- Can enough fresh air get into the heating room?
- Empty ash bin.
- Are the doors and lids on the burner all closed leak-
tight?
- For safety keep firing and ashipt doors tightly closed.
4.2 Operation
4.2.1 Heating up
- ress the F1 key " YROT Wood". The loader modules
will be switched on in the appropriate order. When
there is enough fuel in the combustion chamber, the
entire loader system switches off.
- The automatic ignition then takes place. The ignition
process stops as soon as the fire is started.
4.2.2 Operation
- The material is supplied depending on the light barriers
in the metering container and in the combustion cham-
ber, allowing for the residual oxygen.
- The primary and secondary air vents change their posi-
tions depending on the exhaust gas temperature and
residual oxygen.
- Using the setting "Storage Management, Temperature,
Storage, Average", it is possible to keep the facility in
continuous high-performance operation for as long as
possible – with fewer ignitions, better efficiency and
lower emissions.
(Only possible with accumulator option)
- When the boiler temperature set is reached, the facility
switches to "Run Auger Empty". When the feed auger
has been run empty, and the exhaust gas temperature
is less than (90°C) 194°F, the exhaust gas fan
switches off and the air vents close.
- When the "System Temperature Setting" is fallen short
of, the boiler is automatically started back up.
4.2.3 Switching o
- ress the F1 key " YROT Wood". As feedback to this,
"Run Auger Empty" will appear on the control panel.
CAUTION: Do NOT use the master button to switch o
(DANGER OF BACK BURN) !!!

16
5 The ECOTRONIC control system
5.1 General in ormation
The ECOTRONIC facility control system is a decentralised
microprocessor system (CAN-BUS) developed by KÖB
with various modules that are connected by a data trans-
mission line.
Its unction
The ECOTRONIC records all the data relevant to operation
and controls the supply of and demand for heat.
Thus the boiler plant is continuously monitored during all
the operating phases and kept within an optimum range in
terms of emissions.
Factory settings (pre-settings)
All the parameters in the ECOTRONIC, such as set point
values and switching times, are pre-set and can be called
back up at any time. The figures for the factory settings
are given in brackets for the various parameters.
5.1.1 Replacing the battery
There is a battery built in beneath the removable lid on the
control module (type: anasonic Lithium BR2330). It is
for buffering the time, date and settings.
- The battery needs replacing every ive years!
- Do not disconnect the mains voltage while changing
the battery (do not turn o master switch)!
5.2 The unctions o the keys
F1 (PYROT Wood)
Switch WOOD operation on and off
F2 (PYROT Oil)
Switch OIL O ERATION on and off
F3 (PYROT Parameters)
Setting parameters, set point values, the date and time
F4 (PYROT Loader System)
Setting of cycle switchover switching, advance-flow and
post-flow times
F5 (Group 1)
Setting parameters and set point values
(heat distribution, Group 1)
F6 (Group 2)
Setting parameters and set point values
(heat distribution, Group 2)
F7 (Group 3)
Setting parameters and set point values
(heat distribution, Group 3)
F8 (Group 4)
Setting parameters and set point values
(heat distribution, Group 4)
<
<<
< Go one page to the left in menu masks
>
>>
> Go one page to the right in menu masks
∧
∧∧
∧ Go one line up
(Only possible when the scroll up symbol  is dis-
played.)
∨
∨∨
∨ Go one line down
(Only possible when the scroll down symbol  is
displayed.)
+ Change numeric values and set point values
- Change numeric values and set point values
OK Adopt (acknowledge) settings and/or changes
The ollowing applies to the F3, F4, F5, F6, F7 & F8 but-
tons:
- ressing once will take you to the respective menu. As
feedback, the relevant LED will blink.
- If a set point value is changed and not confirmed with
"OK", then it will not be adopted.
- ressing the function button again will bring back the
standard display.
- When no button is pressed for a period of sixty sec-
onds, the standard display automatically reappears.
BE SURE TO NOTE:
Depending on the design and setting, some menus and
texts do not appear.

17
5.3 Boiler and loader system (F3/F4)
5.3.1 The F3 KEY: "PYROT Parameters"
(screen number) parameter ( actory setting)
(01) Storage unit temperatures ( - ):
Indication of all the storage unit temperatures
(Indication only for storage unit option)
(02) Return low, boiler (70°C):
Set point value for boiler backflow circuit valve
(03) Forward low, boiler (80°C):
Set point value for boiler temperature
(04) Exhaust gas, boiler (200°C):
Limit of maximum exhaust gas temperature
(05) Exhaust gas, residual O2 (7%):
Set point value for residual oxygen for air vent control
(06) O2-control (ON):
If the lambda sensor is defective, the O2-control system
can be switched off (emergency operation).
(07) Air vents without O2-control system (100%):
osition of the air vents with O2-control switched off
(only with O2-control system switched off)
(08) Carry away excess heat at (95°C):
Limit temperature for carrying away excess heat
(10) Load storage unit with oil/gas operation to (storage
unit at bottom):
To which heat storage sensor should the storage unit be
loaded with oil/gas operation?
(Indication only with option of storage unit and oil/gas
burner on YROT ECO)
(11) Load storage unit with oil/gas operation to (70°C):
To what temperature should the storage unit be heated up
with oil/gas operation?
(Indication only with option of storage unit and oil/gas
burner on YROT ECO)
(12) System Temperature Set Point Minimum (50°C):
Minimum forward flow temperature for heat distribution
provided by customer (only if System Temperature Set
oint Minimum YES  Service Menu)
(14) Load storage unit to (STORAGE UNIT AT BOTTOM):
To which heat storage sensor should the storage unit be
loaded with wood operation?
(Indication only for storage unit option)
(15) Load storage unit to (80°C):
To what storage unit temperature should the storage unit
be heated up with wood operation?
(Indication only for storage unit option)
(16) Storage Unit Management, Temperature, Storage Unit
Average (80°C):
Set point value, average temperature, storage unit
 boiler output is reduced according to loading of storage
unit. (Indication only for storage unit option)
(17) Start boiler when the system temperature is allen
short o . Set point (accumulator sensor at bottom):
When the accumulator sensor falls short of the system set
point, the boiler will be heated up.
(Indication only for storage unit option)
(20) External release or boiler (NO):
Is the boiler to be switched on and off by an external
floating contact?
(Indication only with the option "Automatic Start, External
rompt".)
(21) Material take-back larger with air vent positioning
(50%):
Material take-back by means of adjustable air vent posi-
tioning.
(23) Feed auger cycle heat-up (5%):
Insertion of material after ignition
(24) Feed auger, maximum (100%):
Maximum insertion of material
(25) Pneumatic boiler tube cleaning system (500 s):
Cleaning cycle for the pneumatic cleaning system
(28) Wood operation, load ( 0 ):
Operating hours/minutes, full load, YROT
(30) Oil/Gas operation ( 0 ):
Operating hours/minutes, oil/gas operation, YROT ECO
(31) Date/Year (current):
Set year
(32) Date/Month (current):
Set month
(33) Date/Day (current):
Set day
(34) Date/Day o week (current):
Set day of week
(35) Date/Hours (current):
Set hours
(36) Date/Minutes (current):
Set minutes

18
(40) Enter permanent code (-):
(41) Measurement operation (NO):
This activates measurement operation for chimney sweep
measurements.
IM ORTANT: The control of output is then not function-
ing: provide for sufficient thermal acceptance.
5.3.2 The F4 KEY: "PYROT Loader System"
(screen number) parameter ( actory setting)
(01) Cleaning (NO):
This activates the cleaning function. Exhaust fan at start-
ing speed, and moving grate on.
(05) Moving grate, pause (60 s):
Cycle switching for the moving grate (adjustable pause
time, impulse fixed, 2 seconds).
(07) Metering container,empty running time (5s):
Running time for feed auger with the light barrier for the
feed auger clear  prompt for material
(08) Conveyor Device 1/Delay (3 s):
Delay before connecting Conveyor System 1
(e.g. rotary valve, conveyor auger, etc.)
(09) Conveyor System 1, a ter-running (0 s):
After-running of Conveyor System 1
(e.g. pneumatic conveyor, etc.)
(10-37) Conveyor Systems 2-15:
Delay before connecting or after-running of Conveyor Sys-
tems 2 to 15
(38) Extraction System 1/Delay (3 s):
Delay before connecting Conveyor System 1
(e.g. spring-operated extraction system, inclined extraction
system, etc.)
(39) Extraction System 1/Impulse (5 s):
Impulse for the cycle switching for Extraction System 1
(e.g. spring-operated extraction system, inclined extraction
system, etc.)
(40) Extraction System 1, Pause (0 s):
ause in the cycle switching for Extraction System 1 (e.g.
spring-operated extraction system, inclined extraction sys-
tem, etc.)
(41) Extraction System 2/Delay (3 s):
Delay before connecting Conveyor System 2
(e.g. spring-operated extraction system, inclined extraction
system, etc.)
(42) Extraction System 2/Impulse (5 s):
Impulse for the cycle switching for Extraction System 2
(e.g. spring-operated extraction system, inclined extraction
system, etc.)
(43) Extraction System 2, Pause (0 s):
ause in the cycle switching for Extraction System 2
(e.g. spring-operated extraction system, inclined extraction
system, etc.)
(44)Extraction System 1/Hydraulics/Delay
(5 s):Delay before connecting hydraulic drive for Extrac-
tion System 1
(45) Extraction System 2/Hydraulics/Delay
(5 s): Delay before connecting hydraulic drive for Extrac-
tion System 2
(50) Silo illing: Start silo filling (only possible when the
facility is not in operation and has cooled off).

19
5.4 Extended control systems F5 – F8 (optional)
The F5 to F8 keys are assigned customer-specific ex-
tended control systems as desired. Each extended control
system is assigned a separate key.
5.4.1 Room heating system
Function (ECO-H):
Weather-controlled regulation of heating with digital timer
for lowerable operation according to a daily or weekly pro-
gramme, with pump control, frost protection function,
ECOcircuit and limited supply temperature.
Operating modes
- O :
The room heating system is switched off.
- Day/Night:
Heating operation according to clocked programme.
Normal temperature during the day and reduced tem-
perature at night.
- Day/O :
Heating operation according to clocked programme.
Normal temperature during the day and switched off at
night.
- Day:
Normal temperature continuously.
- Night:
Reduced temperature continuously.
- Manual:
ump on; the valve is not controlled (emergency opera-
tion).
(screen number) parameter ( actory setting)
(01) Operating mode (Day/Night)
Select operating mode
(02) Number o heating periods (1)
The weekly programme has to be entered in the form of
heating periods. Each weekly programme consists of the
heating day, start and end. A maximum of seven heating
periods is available.
(03) Heating Period 1/Heating days (MON to SUN)
Day or days on which the switching times apply. Select
the heating days with KEYS F1 (for Mon-day) to F7 (for
Sunday). ressing the button once  selects the day,
pressing the button again  drops the day.
(04) Heating Period 1/Start (6:00)
Time to switch from lowered temperature (or off) to nor-
mal temperature.
(05) Heating Period 1/End (22:00)
Time to switch from normal temperature (or off) to low-
ered temperature.
(06-23) Heating Periods 2-7
These depend on the number of heating periods (see Mask
2), consisting of heating days, start and end.
(24) Temperature o low/at +5°C (43°C)
Desired flow temperature at atmospheric temperature of
+5°C (see heating curve).
(25) Temperature o low/at -15°C (64°C)
Desired flow temperature at atmospheric temperature of -
15°C (see heating curve).
(26) Temperature Room Day (20°C)
Setting for temperature of room during daytime operation.
(27) Temperature Room Night (15°C)
Setting for temperature of room during nighttime opera-
tion.
(28) Night-time lowering o low temperature
by (-6°C)
This temperature set is subtracted from the flow tempera-
ture calculated for night-time lowering.
(29) Flow temperature; maximum (70°C)
The maximum limit for the flow temperature.
(30) ECOcircuit (YES)
The ECO automatic savings system makes the heating
switch on and off as required.
(31) Switch o below system temperature (NO)
Should the room heating unit group be switched off when
a minimum system temperature is fallen short of?
(32) Frost protection unction (YES)
With the frost protection function switched on, the room
heating unit is turned on when there is a danger of frost.
(33) Carry o excess heat (NO)
If the PYROT is at risk of overheating, there is the
option of the excess heat being carried off. The room
unit adjusts to "Flow tem
perature/Maximum".