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Technical Data Manual
for use by engineers and heating contractors
Pyrot
r
Wood-fired Boiler
KRT 150 to KRT 540 Series
Product may not be exactly as shown
Pyrot with its patented rotating combustion chamber
design, features the industry's most advanced combustion
technology. A feed auger continuously moves the wood
fuel onto a moving grate where gasification takes place.
The combustible gases blend with precisely controlled
secondary air, resulting in a complete combustion with
ultra low emissions.
Max. output: 150 to 540 kW (512 to 1843 MBH)
Min. output: 45 to 140 kW (154 to 478 MBH)
5443 109 v1.9 05/2013
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Table of Contents
Related Manuals for Viessmann KOB Pyrot KRT Series
Summary of Contents for Viessmann KOB Pyrot KRT Series
- Page 1 Technical Data Manual for use by engineers and heating contractors Pyrot Wood-fired Boiler KRT 150 to KRT 540 Series Product may not be exactly as shown Pyrot with its patented rotating combustion chamber design, features the industry’s most advanced combustion technology.
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Page 2: Product Information
Solid Fuel Fired Central Heating Appliances Under certain conditions, open loop systems may also be CSA C.22.2#3-M88 (R2004) considered. Contact Viessmann for details. Electrical Features of Fuel Burning Equipment Specifications UL2523 Fully-automatic rotating combustion wood-fired boiler... -
Page 3: Boiler Description
General Information Pyrot Technical Data Boiler Description Boiler Description Description Supplied with: The PYROT Rotating Combustion System (patent no: EP - Boiler with rotating combustion chamber and tube heat 0 905 442 B1) was developed for automatic combustion exchanger including supply and return temperature sensors of all dry to moist wood fuels (remnant wood, pellets and - Fire box with moving grate and light barriers for ember forest wood chips to max. -
Page 4: Transport And Installation
General Information Pyrot Technical Data Transport and Installation IMPORTANT Precautions must be taken to avoid accidents and injury during the transportation of the boiler. Only hoist the boiler when it is entirely empty of water, fuel and ash. Lifting A number of lifting lugs will be provided on each boiler and tube heat exchanger where lifting gear may be attached. -
Page 5: Delivery Condition
General Information Pyrot Technical Data Delivery Condition Standard delivery condition The standard delivery condition of the Pyrot boiler Components that are not attached or installed to the boiler at time of delivery (scope of the contractor): includes pre-assembled components as well as components that need to be assembled by the contractor - Electrical components which include temperature in the field. - Page 6 General Information Pyrot Technical Data Delivery Condition (continued) Special delivery condition (partially disbanded) The following additional objects will be delivered For special circumstances like restricted space to bring disbanded: the boiler into the heating room, the size of the boiler can be reduced by detaching additional components - The combustion chamber and the fire box are separate to the ones as described in section “Standard delivery...
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Page 7: Wood Fuel Requirements
The PYROT is only suitable for burning fuels listed in this IMPORTANT section. A prerequisite for approval is of a fuel by Viessmann is the If different fuels are used, Viessmann will not assume approval for the fuel by the responsible public authorities. - Page 8 General Information Pyrot Technical Data Wood Fuel Requirements (continued) Suitable fuel types for Pyrot systems Maximum water content - Bulk density (S) in kg/m³ [lb/ft³], water content (W) in %, The maximum allowable water content of the fuel for size C1, C7, P1, P2, P4 as per CAN/CSA-B366.1-M91. Pyrot systems is limited to 35%.
- Page 9 General Information Pyrot Technical Data Wood Fuel Requirements (continued) Content limits for non-combustible substances - No wood fuels may contain any foreign bodies, such as pieces of metal, stones, masonry remnants or plastics. The following limits (per lb/kg of dry fuel) of contained non-combustible substances apply [ash analyzed at a temperature of 1500°...
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Page 10: Power Failure Provision
Safety Pyrot Technical Data Power Failure Provision Customers must ensure that there is a supply of water independent of the electrical supply. This design ensures that in case of a power failure, the boiler will be reliably cooled by the thermal run-off safety valve. Venting Requirements The PYROT Rotating Combustion system is equipped For installations in Canada:... -
Page 11: Mechanical Room
The load-bearing capacity of the floor in Viessmann recommends the installation of an additional the area of the boiler bearing surface must be 512 lb/ft² electrical disconnect switch and a fuel shut-off valve (if (2500 kg/m²). -
Page 12: Combustion Air Supply
Safety Pyrot Technical Data Combustion Air Supply Confined spaces Codes When a furnace or boiler is enclosed in a space that has Provision for combustion and ventilation air must be made a volume less than 20% of that to be heated by the in accordance with applicable local codes. -
Page 13: Technical Data
Mechanical Pyrot Technical Data Technical Data Boiler model KRT- Maximum output MBH (kW) 512 (150) 751 (220) 1024 (300) 1365 (400) 1843 (540) Minimum output MBH (kW) 154 (45) 205 (60) 273 (80) 341 (100) 478 (140) Efficiency Fuel moisture content W 40 Size of wood chips G 30 / G 50 as per CAN/CSA-B366. -
Page 14: Boiler Dimensions
Mechanical Pyrot Technical Data Boiler Dimensions BR Boiler Return BS Boiler Supply Dimensions Boiler Model KRT- in. (mm) 7 / 16 (392) 16 (406) 16 (406) 18e (466) 18e (466) in. (mm) 60 (1525) (1875) (1800) (2030) 60f (1541) 13 / 16 7 / 8 15 / 16 in. - Page 15 Mechanical Pyrot Technical Data Boiler Dimensions (continued) Legend A Boiler Return B Boiler Supply C Automatic de-ashing system (optional) Dimensions Boiler Model KRT- in. (mm) 7 / 16 (3415) 1 / 16 (3685) 119b (3035) 120b (3059) 136d (3457) in. (mm) (2250) (2630) (2614)
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Page 16: Boiler Components
Mechanical Pyrot Technical Data Boiler Components Legend A Pneumatic cleaning system (optional) B Cleaning cover, flue gas collector, alternate port for the flue gas blower C Cover with sight glass D Recirculation gas line, line routing variable E Automatic ignition unit E Automatic ignition F Articulated head blower G Flue gas temperature sensor... - Page 17 Mechanical Pyrot Technical Data Automatic De-ashing System Description Supplied with: De-ashing in Ash Bin, 63.5 USG (240 L) Boiler ash chamber with ash level control system and De-ashing in Ash Bin, 211.3 USG (800 L) de-ashing auger made of high-temperature steel drive via worm-geared motor Complete auger de-ashing from the ash chamber for the Connection station with moveable ash bin...
- Page 18 Mechanical Pyrot Technical Data De-ashing in Base Container Description De-ashing in Base Container (for Pyrot KRT-150) De-ashing in Base Container (for Pyrot KRT-220) De-ashing in Base Container (for Pyrot KRT-300) De-ashing in Base Container (for Pyrot KRT-400) De-ashing in Base Container (for Pyrot KRT-540) Complete de-ashing by auger of the fire box ash chamber into the maximum volume base container situated under the boiler.
- Page 19 Mechanical Pyrot Technical Data Pneumatic Cleaning System Description Function of the control system: The number of cleaning cycles within one time unit (e.g. Pneumatic Cleaning System (for Pyrot KRT-150) per hour) is adapted to the load of the boiler. Pneumatic Cleaning System (for Pyrot KRT-220) One individual, complete cleaning cycle consists of a Pneumatic Cleaning System (for Pyrot KRT-300) series of pressure impulses over all the sections of the...
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Page 20: Chimney Connection
It is recommended to install a draft damper in the chimney The draft damper is field supplied. Optional, the Viessmann supplied draft damper can be installed in the flue gas pipe of the biomass boiler The draft damper should be installed in the flue gas pipe (not included) as close as possible to the chimney not closer than 39e In. - Page 21 Mechanical Pyrot Technical Data Flue Gas De-duster The flue gas de-duster minimizes dust emissions and is Supplied with: designed as a multi cyclone with axial function. The de- 1 flue gas de-duster ■ duster is fully insulated and has three covers for cleaning. 1 ash container 24 USG (90 L) ■...
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Page 22: Metal Mesh Filter
Mechanical Pyrot Technical Data Metal Mesh Filter The metal mesh filter removes dust and fine dust from the Supplied with: flue gas. It is characterized by a particularly high degree - Two-part, insulated filter casing with: of separation. This ensures a fine dust content of less - Hinged doors, lockable by means of a quick-action than 20 mg/Nm in the clean gas. - Page 23 Mechanical Pyrot Technical Data Metal Mesh Filter (continued) Legend A Clean gas collector B Crude gas distributor (connection possible on both sides) C Recirculation gas connection D Clean gas to chimney E Crude gas from boiler (connection possible on both sides) F Flue gas blower (with variable rotation) (alternate mounting of flue gas blower shown in dark grey) G Control panel Ecotronic...
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Page 24: Safety Devices
Mechanical Pyrot Technical Data Safety Devices Boiler system with return 3-way valve Fire extinguishing water tank To reliably prevent boiler corrosion through condensation The self-activating extinguishing device must be installed of the flue gases, the boiler return temperature must never next to the boiler feed system. -
Page 25: Piping And Installation Of Safety Devices
Mechanical Pyrot Technical Data Piping and Installation of Safety Devices System fill Drain inspection port System fill Safety heat exchanger top view 3-Way mixing valve System return line Blocked 2 heat exchanger port loops for Bypass line Pyrot 400/540 Valve adjustment must be facing forward Boiler return line Legend... - Page 26 - PDPPressure relief valve drain pipe be below 150° F (65° C). - DCW Cold water inlet, min. 36 psi (2.5 bar), max. A Viessmann sized boiler pump with a boiler 51 psi (3.5 bar) mixing valve are provided according to the - AV Air separator / vent tables below.
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Page 27: Fire Protection
2b in. 3-way mixing valve 2b in. 3 in. 3-way mixing valve 3 in. 3-way mixing valve 4 in. 3-way mixing valve Viessmann ASME recommended tank sizes (U-stamped) Boiler model KPT- Tank size 1514 2006 2650 3785 1000 5678 1500 Fire Protection Follow local regulations for wood-fired heating systems. - Page 28 Fire protection for fuel storage space unit and the boiler. The rotary valve is suited to reduce Viessmann does not provide fire protection for the fuel pressure and at the same time is considered a suitable storage space.
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Page 29: Fire Extinguishing System
Mechanical Pyrot Technical Data Fire Extinguishing System The fire extinguishing system functions independent from Fire extinguishing system for the conveyor auger the electrical power and is flooding the material which is Note: The fire extinguishing system for the conveyor still remaining in the in-feed auger in case of a back-burn. auger is optional. - Page 30 Electrical Pyrot Technical Data Vitocontrol Mounting of the control panel Operation: The control panel should be in an area where the heat Operation is carried out by means of a control panel radiation (front side of boiler, rear side of boiler with flue with a membrane keyboard and plain language display.
- Page 31 Electrical Pyrot Technical Data Vitocontrol Accessories Triggering System for external drive Note: The control system components below are reserved for the PYROT Single-unit System. Function: With the PYROT Double-unit System, these Starttec, motor soft start for optimized connection of an functions are included in the Mastercontrol.
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Page 32: Electrical Components
Electrical Pyrot Technical Data Vitocontrol Accessories (continued) Note: The control system components below are reserved Visualization by web server for the PYROT Single-unit System. With the PYROT Function: Double-unit System, these functions are included in A complete package for transmitting all data to a remote the PYROT Mastercontrol. - Page 33 Electrical Pyrot Technical Data Electrical Components (continued) Component overview B Sensors M Hight voltage S Switches Y Low voltage N Sensors High voltage Number Designation Device tag Description -14M1 Flue gas blower -27M2 Grate drive -28M3 Rotation blower -8M4 De-ashing auger -8M5 De-ashing ascending conveyor auger (not shown) -21M10...
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Page 34: Fuel Transport And Extraction Systems
Electrical Pyrot Technical Data Fuel Transport and Extraction Systems Rotary Valve Number Designation Device tag Description -9 M9 Motor for rotary valve... - Page 35 Electrical Pyrot Technical Data Fuel Transport and Extraction Systems In-feed auger Number Designation Device tag Description -11M31 Motor for in-feed auger S31.1 11S31.1 Limit switch for maintenance lid B31.1 -11B31.1 Light barrier metering container (Transmitter) B31.2 -11B31.2 Light barrier metering container (Receiver) M30.1 -23M30.1 Slide valve T30 M30.2...
- Page 36 Electrical Pyrot Technical Data Fuel Transport and Extraction Systems (continued) Pellet extraction auger Number Designation Device tag Description -12M32 Motor for pellet extraction auger S32.1 -12S32.1 Limit switch for maintenance lid S32.2 -12S32.2 Limit switch for silo door (not shown) Note: For details on designation, see field wiring diagram.
- Page 37 Electrical Pyrot Technical Data Fuel Transport and Extraction Systems (continued) Horizontal extraction system Number Device tag Device tag Description -12M32 Motor for extraction auger -12M33 Motor for agitator -12B32 Light barrier for extraction auger S32.1 -12S32.1 Safety switch for maintenance lid S32.2 -12S32.2 Safety switch for silo door (not shown)
- Page 38 Electrical Pyrot Technical Data Fuel Transport and Extraction Systems (continued) Walking floor auger Number Designation Device tag Description -6M3 Motor for walking floor auger -68S3 Safety switch for maintenance lid S3.1 -68S3.1 Safety switch for auger cover B3/1 -61B3/1 Light barrier walking floor auger (Transmitter) B3/2 -61B3/2 Light barrier walking floor auger (Receiver)
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Page 39: Hot Water Storage Tank
Electrical Pyrot Technical Data Hot Water Storage Tank Silo Lid Number Designation Device tag Description Y6.3 -22Y6.3 Solenoid valve silo lid open Y6.4 -22Y6.4 Solenoid valve silo lid close S6.1 -22S6.1 Key operated switch for silo lid M901 -24M901 Vibration motor 1 M902 -24M902 Vibration motor 2... - Page 40 Pyrot Technical Data Commissioning Fuel for the commissioning For the commissioning, sufficient dry fuel (max. W 20%) should be stored for approx. 10-24 full operating hours: PYROT approx. 2640 lb. PYROT approx. 3300 lb. PYROT approx. 4400 lb. PYROT approx. 5500 lb.
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