Hoval BioLyt 50 Instruction manual

Hoval BioLyt wood pellet boilers
Output from 50 to 160 kW
Working pressure to 3 bar
Technical Data
Output range 50 - 160 kW
BioLyt
Wood pellet boiler

1A combined draught stabiliser and pressure relief damper is provided with each BioLyt boiler for fitting by the installer.
2Min. 13 A protection because of operating current.
Technical Data
BioLyt
Type (50) (70) (110) (130) (160)
•Nominaloutput kW 49 69 105 130 156
•Heatinputatnominaloutput kW 54 74 114 141 170
•Heatoutputrange kW 14-49 20-69 31-105 39-130 43-156
•Pellets Ø mm 6-8 6-8 6-8 6-8 6-8
Length mm 5-30 5-30 5-30 5-30 5-30
•Maximumboilerowtemperature °C 80 80 80 80 80
•Minimumboileroperatingtemperature °C 60 60 60 60 60
•Minimumboilerreturntemperature °C 45 45 45 45 45
•Fluegastemperatureatnominaloutput °C 170 170 160 170 185
•Fluegastemperatureatminimumoutput °C 90 90 80 90 100
•CarbondioxideCO2% 12 12 12 12 12
•Operating-/testpressure bar 3,0/4,5 3,0/4,5 3,0/4,5 3,0/4,5 3.0/4.5
•Minimumoperatingpressure bar 1.0 1.0 1.0 1.0 1.0
•Boilerefciencyatnominaloutput % net > 90 > 90 >90 >90 >90
•Fluegasmassowrateatnominaloutput
(based on moisture content of pellets 10 %) kg/h 120 170 260 320 375
•Fluegasmassowrateatminimumoutput kg/h 38 53 82 98 112
•Flowresistance z-value 1.5 1.5 0.3 0.3 0.3
•Boilerwatersideresistanceat10K∆T mbar 25 55 24 39 52
•Boilerwatersideresistanceat20K∆T mbar 7 16 6 10 13
•Waterowat10K∆T m³/h 4.2 6.4 9.1 11.5 13.5
•Waterowat20K∆T m³/h 2.1 3.2 4.5 5.7 6.7
•Boilerwatercontent Litre 180 215 360 360 360
•Fuel-loadingchambercapacity Litre 200 200 200 200 200
•Ashbincapacity Litre 65 65 180 180 180
•Thicknessofboilerbodyinsulation mm 80 80 80 80 80
•Boilerdryweight
(without lagging, burner, pellets hopper) kg 390 520 980 980 980
•Boilerdryweight
(with lagging, burner, pellets hopper) kg 640 780 1350 1350 1350
Thermal ow safeguard
•Switchingpointofthermalowsafeguard °C 95 95 95 95 95
•Minimalowofwater
(cold water 10 °C) m³/h 2.0 2.0 2.0 2.0 2.0
•Minimumrequiredcoldwaterowpressure bar 2 2 2 2 2
Flue system 1
•Negativepressureconditionatboilerflueoutlet -Pa 5 to 20 5 to 20 5 to 20 5 to 20 5 to 20
•Electricalconsumptionduringoperation Watt 170 170 350 380 400
•Electricalconsumptionduringignition Watt 1800 1800 1950 1950 1950
•Electricalconsumptionduringintroductionofpellets Watt 1900 1900 1900 1900 1900
•Maximumcurrent2A 13 13 13 13 13
Pellet transportation system basis kit RAS41 (BioLyt 50 & 70 only)
Delivery tube length [m] maximumdeliverytubelift[m]
15 to 25 1,8
10 to 15 2,8
5 to 10 4,5
2
Hoval BioLyt (50-160)

1b
2a
3a
3a
3b
3b
4
5
6
7
8
9
10
11
11
12
2b
1a
Dimensions BioLyt (50 & 70)
BioLyt
Type L H1 H2 H3 B1 B2 B3 B4 E1 E2 E3
(50) 1660 2218 1705 1545 740 640 105 175 1310 490 1290
(70) 1685 2298 1800 1635 800 740 200 190 1410 590 1385
1 Minimumdistancetowallonthecontrolpanelside
700mm, on opposite side 150mm
Measurements and space requirements for maintenance
(all measurements in mm)
1a Boiler flow connection R 1¼"
 1b Systemflowconnection R1¼“
2a Boiler return conection R 1¼"
 2b Systemreturnconnection R1¼“
 3a Pelletfeedsystem/transferbox/RAS51
 3b OptionalRAS41pellettransportation ∅50 mm
system centrifugal separator
 4 Safetyheatexchangerconnections 2xR½"
5 Drain R ¾"
 6 Fluegasoutlet externalØ150mm
7 Induced draught fan
8 Control panel (can be fitted right or left side)
 9 Sightglass
 10 Pocketforboilersensor
(behind the casing) Rp ¾"
 11 Pocketforsensorofthethermal
  flowsafeguard(behindthecasing) Rp½"
12 Low return temperature protection kit
H1less273mmifRAScentrifugalseparatorfitted(3babove)
3
Hoval BioLyt (50-160)

2a
5
8
4
6
1b,10,11
7
9
2b
12
1a
Dimensions BioLyt (110,130 &160)
Measurements and space requirements for maintenance
(all measurements in mm)
1a Boilerflowconnection DN50
1b Systemflowconnection DN50
2a Boilerreturnconnection DN50
2b Systemreturnconnection DN50
3 Pelletfeedsystem/transferbox/RAS51
4 Safetyheatexchangerconnections 2xR½"
5 Drain R 1"
6 Fluegasoutlet ExternalØ180mm
7 Induced draught fan
8 Control panel (can be fitted right or left side)
9 Sightglass
10 Pocketforboilersensor Rp¾"
(behind the casing)
11 Pocketforsensorofthethermal
 flowsafeguard(behindthecasing) Rp½"
12 Low return temperature protection kit
1minimum distance to wall on the control side 700 mm,
on the opposite side 150 mm.
Note:TheRAS41pellettransportationsystemisnot
suitable for the BioLyt (110 - 160).
4
Hoval BioLyt (50-160)

L1
B2
L2
H
140
B1
BioLyt
Type H B1 B2 L1 L2
(50) 1790 640 740 1220 1430
(70) 1880 740 840 1220 1430
(110 - 160) 2000 840 1000 1750 2000
Dimensions BioLyt (50-160)
Boiler without casing and insulation
(all measurements in mm)
Palletincludedfor
delivery purposes
Assemblyanddelivery:
The BioLyt boiler is supplied as a kit of parts. We include for
subsequentassemblyonsitebyourengineeringteam.
5
Hoval BioLyt (50-160)

Regulations and guidelines
The following regulations and guidelines must
beobserved:
– Hoval technical information and installation
instructions
– RelevantBritishStandardsandGuidelines
– Hydraulic and technical control regulations
– Local Building regulations
Water quality
Heating water:
 EuropeanstandardBSEN14868:2005
and VDI guideline 2035 must be observed.
Particularnotemustbetakenofthe
followingregulations:
- Hoval boilers and water heaters are suitable
for heating systems without significant
oxygenation(systemtype1inaccordance
belowwithBSEN14868:2005)
- Systemswith
- Continuous oxygenation (e.g. floor
heating without diffusion-proof plastic
pipes) or
- Intermittent oxygenation(e.g.frequent
toppinguprequired)mustbefittedwitha
system separator
- Treated heating water must be checked at
leastonceperyearormorefrequentlyas
specified by the inhibitor manufacturer.
- If,inthecaseofexistingsystems(e.g.
boilerreplacement),thewaterqualityofthe
existingheatingwatercomplieswithVDI
2035, it is not recommended that the system
be refilled. VDI 2035 also applies to top-up
water.
- Before filling new systems, or, if applicable,
existingsystems,theheatingsystemmust
be professionally cleaned and flushed. The
heating system must be flushed before the
boiler is filled.
- Componentsoftheboiler/heatexchanger
that come into contact with water are made
of ferrous materials and stainless steel.
- The combined chloride, nitrate and sulphate
content of the heating water must not
exceedatotalof50mg/l.
- Once the heating has been in operation for
6 – 12 weeks, the pH value of the heating
water should be between 8.3 and 9.5.
Water for filling and topping up the system:
- Untreated drinking water is generally most
suitable for filling and topping up a system
with a Hoval boiler. However, the water
qualityoftheuntreateddrinkingwatermust
always comply with VDI 2035 or must be
demineralisedand/ortreatedwithinhibitors.
ThespecificationsofBSEN14868:2005
must be observed.
- In order to maintain the boiler’s high
efficiency level and to avoid overheating of
the heating surfaces, the values in the table
belowmustnotbeexceeded.Thesevalues
are calculated in relation to the boiler output
(the smallest individual boiler in the case
of multiple boiler systems) and the water
content of the system.
- Thetotalquantityofwaterusedtofilland
top up the system during the boiler’s life
mustnotexceedavalueequivalenttothree
times the water content of the system.
Heating System
- The boilers must not be installed in areas
where halogen compounds occur and could
enter the combustible air (e.g. washing,
drying, workshop areas, hairdressing salons
etc).
- Halogen compounds can be caused by
cleaning, degreasing and solvent agents,
adhesivesandbleachingliquids.
- A suitable supply of combustion air must be
guaranteed. It must not be possible to close
theairsupplyapertures.Minimumfreearea
for the air supply aperture is 13cm2per 1kW
boiler output at a flow of 4.2m3/hrper1kW
boiler output.
- High and low level ventilation should be
provided (1/3high level and 2/3low level
split).
Space requirements
see separate dimensional information on
pages 9 & 10.
Use of Buffer Vessel
TheBioLytWoodPelletboilerisdesigned
Engineering
to be fully automatic and is supplied with an
automaticfiringorignitionsequencethatwill
bring the boiler on from cold without manual
intervention and has a timed automatic burnout
once the boiler has satisfied its set point
temperature returning the boiler to an ‘out’
condition.Fromcoldtheboilerwouldtypically
reachitsmodulatingmodeafterapprox20
minutesandsimilarlyittakesapprox20
minutes for the burnout to bring the boiler from
the modulating mode to out. Once the burnout
process is initiated it has to take the boiler
out. It is therefore strongly recommended
that a load balancing buffer or accumulator
vessel is included in the primary boiler circuit
to ensure that any sudden or variable system
requirementscanbemetpromptly.Please
contact Hoval Technical Department for advice
on sizing.
Heating Installation
Low return temperature protection
A boiler low return temperature protection kit is
supplied with all BioLyt boilers to ensure that
theminimumreturntemperaturerequirement
of 45ºC is met. Details of this kit are shown on
page12ofthisleaetandalsoshownonthe
typical hydraulic schematics.
Hydraulic system Design
The boiler hydraulic system design must
complywithanofcialHovalschematic.
Variousexamplesareincludedinthisleaet
and a range of schematics can be downloaded
from www.hoval.co.uk, or can be supplied on
request.PleasecontactHovalTechnicalfor
further advice.
Noise Attenuation
The following steps can be taken to reduce
noise:
- Makethewalls,ceilingandflooroftheboiler
plant room as solid as possible, fit sound
absorbers in the air supply ducting, provide
conduit supports and brackets with sound
dampening fittings.
- Iftherearelivingquarterseitherabove
or below the boiler plant room, fit rubber
vibration dampers underneath the base
channels of the boiler and connect pipework
withflexibleconnections.
- Connect circulating pumps to the system
withflexibleconnections.
Expansion vessel / expansion
- It is recommended that the system
expansionvesselisconnectedtothe
heating system with a cold fill loop. This
means that the entire system will not need to
be emptied in order to carry out work on the
vessel.
- In the case of open vented, the system
heightmustbesuchthattherequired
minimum operating pressure is maintained.
Safety valve & automatic air vent
- A safety valve and automatic air vent must
be fitted to all boilers.
- A Hoval safety valve and automatic air vent
set(c/wpressuregauge)isincludedwiththe
boilerasanaccessory.Pleaseseepage11.
Maximum filling quantity based on VDI 2035
Total hardness of lling water up to…
[mol/m3] 1<0.1 0.5 1 1.5 2 2.5 3 >3.0
f°H <1 5 10 15 20 25 30 >30
d°H <0.56 2.8 5.6 8.4 11.2 14.0 16.8 >16.8
e°H <0.71 3.6 7.1 10.7 14.2 17.8 21.3 >21.3
~mg/l <10 50.0 100.0 150.0 200.0 250.0 300.0 >300
Conductivity <20 100.0 200.0 300.0 400.0 500.0 600.0 >600
Boiler size of
individual boiler maximum lling quantity without demineralisation
up to 50 kW NOREQUIREMENT 20l/kW
50 to 200 kW 50l/kW 20l/kW 20l/kW always demineralise
1 Total of alkaline earths
2 IftheconductivityinµS/cmexceedsthevaluespeciedinthetableawateranalysismustbecarried
out
6
Hoval BioLyt (50-160)

As a result clean, low-emission combustion is
achieved. The horizontal combustion results
inaameshapesmiliartothatofanoilorgas
burner. This combustion system achieves a
highpelletburnoutrate.Mainlyduetothelarge,
mostly refractory lined combustion chamber, it is
possible to acheive a large residence time of the
hotgasesaswellassufcientlyhighcombustion
temperatures.
Hotwaterissubsequentlygeneratedbyheat
exchangebetweenthehotgasesandboiler
water by means of a thermolytic secondary heat
exchangesurface.Thesecondaryheatexchange
surface is automatically cleaned by means of a
motor driven mechanical cleaning device. This
improves the efficiency, lowers maintenance
requirementsandensuresaconstantlowfuel
usage.
Boiler Cleaning Regime
Automaticashremovalwithintegratedashbox
–Emptingoftheashboxwillneedtobecarried
out periodically by the operator. In addition, there
isarequirementfortheoperator(ormaintenance
engineer) to routinely take the boiler off line, to
clean out the combustion chamber, retort, and ID
fan chamber. This will involve a partial strip down
atthefrontandtopoftheboiler.Pleasereferto
theBioLytOperatingandTechnicalManualpages
for further information. These can be accessed
via the Downloads page of our website www.
hoval.co.uk.Thefrequencyofthecleaningand
de-ashingintervalswillvarywiththequalityfothe
pelletsused(seeabove)andheatloadprofile/
operating time.
Flues and chimneys
General Guidelines
- Individualboiler chimneysand uesshould be
used.
- Thechimney/uemustbegastight,impervious
to moisture, non corrosive and acid proof.
- Thechimney/uedesignshouldencompassthe
minimum number of bends - any bends should
be swept - avoid excessively long horizontal
runsandifpossiblehavetheueenterthemain
chimney riser at an angle of 45oto minimise the
ueductresistance.
- The flue should be fitted with the combined
draught stabiliser and pressure relief damper
that is supplied loose with all BioLyt boilers (see
included accessories). This damper should be
installedwithin1 metreoftheboilerueoutlet
connection.Pleasenotethattting ofthisitem
isexcludedbyHoval.
- We recommend flues should be at least
200mmI/Diaaftertheabovedamper.
Engineering
Thermal flow safeguard
Theheatexchangermustbeconnectedtothecold
watersupplyataminimumrequiredflowpressure
of2barandminimumwaterflowrate,asfollows:
BioLyt(50) 2000l/h
BioLyt(70) 2000l/h
BioLyt(110-160) 2000l/h
Fuel Pellet Storage Room, Silo or Bunker
The design of the intended fuel pellet storage room,
silo or bunker must be approved by Hoval prior to
confirm ation of an order being given.
Pellet Fuel Specification
ThepelletsshouldbeformedfromCLEANor
VIRGINTIMBERandtothespecificationoutlinedin
woodpelletspecificationCEN/TS14961.
ThefuelMUSTNOTcontainhalogenatedorganic
compounds or heavy metals as a result of treatment
with wood preservatives or coatings.
Typically the wood pellet fuel would have the
following As Received properties,
CaloricValue(min)nCV
basis (CV)
17,000kJ/kg,or
4.72kWh/kg
MechanicalDurability(DU) > 97.5%
Ash Content (A) < 1.0%
MoistureContent(M) < 10 %
SizeDiameter(D)
Length
D 06, Diameter 6mm
20 – 30mm
SulphurContent(S) <0.05%
Fines(-3.15mminto
vehicle)(F)
< 1.0%
Bulk Density 650kg/m3
Hoval do not endorse any particular wood pellet
manufacturer, however it is recommended that
fuel is supplied against the specification indicated,
and the supplier operates well maintained vehicles
and fully trained delivery drivers to ensure that the
boiler and fuel transfer system are presented with
well sized wood pellets, which are free from any
contamination.
Boiler operation
Hot water for heating is generated by the controlled
combustionofqualitywoodpelletsthrougha
thermolyticheatexchanger.Thewoodpelletsare
conveyed by a dosing screw from the pellet hopper
over a drop tube to the boiler feed screw. The speed
of this dosing screw modulates in line with the heat
demand.
Degassing of the pellets takes place in the rear
part of the burner tube into which primary air is
supplied by a high pressure fan. In this way the
combustiongasesgeneratedarethoroughlymixed
with secondary air, which is supplied by an induced
draught fan within the front section of the burner
tube.
- FuelQualityRequirement.Thedesignofthe
combustion system is dependant on using the
correctqualitywoodpelletfuel,aspreviously
outlined.
- Note:Fluegastemperatureathighremay
approach 200oCandtheuesystemshouldbe
able to safely operate under such conditions
(further advice can be found at www.hetas.
co.uk).
D
D
2xD
< 2D
1D
Flue Gas
test point
Drain line to
tundish
Thermostatically
operated valve
Cold water supply
Chimney sizes and height will need to take into
accountthefollowing:
1) Clean Air Act.
2) Local Regulations.
3) Considerations to adjacent buildings.
4) The discharge to atmosphere of the
products of combustion that may
contribute to health dangers and be
such to minimise the impact of the
same. When used with the correct
quality fuel, the BioLyt meets the
requirements of Class 3 of EN 303-5 in
this respect.
IMPORTANT
Condensationfromtheuesystemshouldnot
be allowed to run back into the BioLyt boiler. A
suitable trap arrangement must be provided to
ensurethisrequirementismet.
Guidance for sizing ues and chimneys is
given in CIBSE and HVCA guides and also
Hoval Technical Data Sheets. Flues should
conform to the relevant British Standards,
Codes of Practice and current legislation.
- The flue design will be such that the chimney
heightshouldprovidesufcientbuoyancytogivea
negative pressure condition of between 5 and
20 Pa at the boiler ue outlet. The chimney and
ueshould,undernormalringconditions,provide
a draught at the boiler outlet.
- With a cold chimney some external draught
assistancemayberequirede.g.uefan.
- Commonueheadersmustbeavoided.
- Steps should be taken to prevent or minimise
condensationformingwithintheuebyusingtwin
walled insulated systems.
- Adequate doors should be provided in ues and
chimneys for cleaning and inspection purposes. This
is particularly important on any horizontal section.
- Fluesshouldbesupportedindependentlytoprevent
anyundueweightandforcesduetoexpansionbeing
transmitted to the boiler outlet connection.
- A uegassamplingpoint,withacircular internal
diameterof10-21mm,mustbettedintheuepipe
adjacenttotheboiler.Pleaseseethediagrambelow
(damper not shown).
7
Hoval BioLyt (50-160)

The successful and effective biomass installation is dependant on a
well planned and installed pellet feeding system to ensure delivery of
pelletstothepointofcombustioninthecorrectvolume,quantityand
quality.
With regard to the bulk storage or wood pellet fuel store the following
simple guidelines offer advice to assist in the design and sizing for a
successful installation.
A bulk wood pellet fuel store should be located as close as possible
to the biomass boiler. The design of the fuel store and the recovery
ofthepelletsfromthestoreandthesubsequenttransferofthefuel
to the boiler should be kept as simple as possible. Tall thin storage,
such as purpose designed silos, often represent the most effective
way of storing wood pellet fuel and can lead to the best use of a given
storage volume. The angle of the discharge cone from such a silo
wouldtypicallybe60ºtoensurecompletemassowfromthestore.A
possible alternative to a storage silo would be a bespoke build bunker
store.Thesetypicallyrequirealargeroorareaandarelesseffective
intermsoftheavailablerecoverablevolumeoffuel.Someproling
of the bunker base should be considered – minimum angles of 45º
shouldbeadoptedifprolingbunker–whichwillsignicantlyreduce
the volume available for the storage of pellet fuel. The natural angle of
reposeofthefuelwillvarydependingonthequalityofthewoodpellet
butwilltypicallybegreaterthan45º.Againthiscansignicantlyreduce
the recoverable volume available in the pellet store. Whichever fuel
storedesignisadopteditmustbesuchthatit:
• Keepsthefueldryaswateringresswillcausethepelletstofallapart
 andblockhandlingequipment.
• Islocatedascloseaspossibletotheboiler.
• Hasadequatevehicleaccesstoalloweasybulkdelivery.
• Isttedwithappropriatelysizeddeliverypipework.
• Bulkfueldeliverieswouldnormallyblowfuelintostoreviaadelivery
pipe.
• Deliverypipework/bunkerdesignshouldnotcauseunduefuel
breakage during delivery.
• Issealedtopreventpossibledustnuisance.
• Conveyingairusedforfueldeliveryneedstobelteredpriorto
discharge.
• Issizedtosuitboilerloadandlikelybulkdeliverypayload.
• Mayneedtobebehindareratedwallifinsidetheplantroom
(check with Building Control).
PelletrecoveryfromthefuelstorewouldtypicallyeitherbeviaPick-up
auger(s) angled into the bunker or directly from the outlet of a coned
purposebuiltstoreorsilo.Fromthebunkerorsilothewoodpelletfuel
isdeliveredtothetransferboxofthestoker.
Therearethreekeyfactorsthatinuencethesizeofthepelletstore.
1.AvailableSpace-usuallyadjacenttoorclosetoboilers-taking
account of best use of that space.
2.EstimatedFuelconsumption.
3.Therequiredfrequencyofdelivery-orthesizeofdelivery
anticipated.
Hoval can offer a number of silo based fuel store options or advise on
most appropriate use of available space for a bespoke build fuel
store.
Pelletsfeeding
into the BioLyt
boiler from the
flexibleaugerinto
the boiler storage
container.
Fabricbagsilo
gravity feeding
pellet into BioLyt
boilers through a
centrelessflexible
auger.
RAS41pellettransportation system (only suitable for BioLyt 50 & 70)
Wood pellet store design and feeding system guidelines
8
Hoval BioLyt (50-160)

Typical plantroom layouts
General arrangement of a BioLyt and fabric silo pellet storage
Fabricsilo Fabricsilo Flexibleauger BioLyt wood
pellet boiler
Maintenancearea
9
Hoval BioLyt (50-160)

Typical plantroom layouts
General arrangement of a BioLyt and GRP silo pellet storage
GRPSilo
Flexibleauger
BioLyt wood
pellet boiler
Silofillpipe
Silovent
pipe
Maintenancearea
10
Hoval BioLyt (50-160)

Cleaning set for BioLyt (50,70,110,130,160)
consistsof:
Ash shovel, brush & ash scraper with wall
bracket and power cable for the manual
operation of the induced draught fan. 6015 844
Included Accessories
Flue Damper 1
Combined draught stabiliser and pressure relief
damper including 90° stainless steel t-piece, for
fitting by the installer.
Type internal diameter
[mm] suitable for
ZET150 150 BioLyt (50,70) 6008 032
ZET180 180 BioLyt (50-160) 6008 033
ZET200 200 BioLyt (110-160) 6008 034
ZET250 250 BioLyt (110-160) 6008 035
1 6008032(ZET150)issuppliedasstandardwiththeBioLyt50&70
6008033(ZET180)issuppliedasstandardwiththeBioLyt110-160
ZET200andZET250dampersareavailableatextracostonrequest.
Thermal flow safeguard STS20
Valve ¾ ", with capillary tube 1.3m, immersion
pocket½"-142mm. 242 662
Safety set
Complete with a safety valve set at 3 bar lift,
pressure gauge and automatic air vent
Connection:Internalthread.
DN15:connectionRp1"BioLyt(50)
641 184
DN20:connectionRp1"BioLyt(70)
DN25:connectionRp1"BioLyt(110-160)
6014 390
6018 709
Low return temperature protection 3
Consistsof:Biralshuntpumpwithcablefor
connection to boiler control panel, motorised
3-way valve, ball valve on the return, ther-
mometerabovethe3-way-valveandflexible
insulated connecting pipe.
Type RH 32-M - BioLyt (50, 70)
forBioLyt(50)BiralMX13-1pump
6019 235
forBioLyt(70)BiralM14-1pump 6021 256
forBioLyt(50)BiralAX13-1lowenergypump 6020 518
for BioLyt (70) Biral A14-1 low energy pump 6021 257
Type RH 50-44 - BioLyt (110- 160)
for BioLyt (110-160) Biral A401-1 pump
6021 793
3
6019 235 is supplied as standard with the BioLyt 50
6021 256 is supplied as standard with the BioLyt 70
6021 793 is supplied as standard with the BioLyt 110-160
ThelowenergypumpsfortheBioLyt(50&70)areavailableatextracostonrequest.
A
A
A
Motorised burn back protection damper 2
To act as a safety fire break between the boiler
and the main fuel store.
RAS51
641 066
2 NotsuppliedifRAS41orderedasanoptionalitem
11
Hoval BioLyt (50-160)
Heating regulator Set
Heating regulator Hoval TopTronic®T/Nfor
- 1mixedcircuit
- 1heatingcircuitwithoutmixingoperation
- Domestic hot water loading circuit
- OutdoorsensorAF200
- FlowSensorVF204
with 4m cable.
- 1immersionsensorKVT20/5/6
for calorifier with 5m cable. 6020 568

Other Accessories
Flue gas thermometer 241 237
Suctionturbine
for wall mounting
Centrifugal separator
set up on boiler
6014 644
Basic kit RAS 41 for BioLyt (50 & 70)
Forautomatictransferofpelletsfromthestor-
age system (store, fabric silo or pellet tank) into
the BioLyt pellet storage container. Consisting of
suction turbine for wall mounting and centrifugal
separator mounted on top of the BioLyt boiler.
Fillingistimecontrolledandviaalevelprobe.
Maximumdistance
Output length [m] maximumpossible
output height [m]
15 to 25 1,8
10 to 15 2,8
5 to 10 4,5
Sound absorbing hood for suction turbine
for sound reduction
Dimensions:
HxBxT=710x500x354mm 6018 717
Store extract auger complete including
auger, motor and connectors for vacuum
pipes. For Hoval BioLyt (50,70).
Consisting of auger, auger channel, auger
bearing, head piece with drive (geared motor)
and connectors ∅50 mm for vacuum pipes
withintegratedreprotectionsleeves.
Type Length Minimum Sections
RAS  roomLength
42-1 1300 1550 1
42-2 1800 2050 1
42-3 2300 2550 2
42-4 2600 2850 2
42-5 2800 3050 2
42-6 3100 3350 2
42-7 3600 3850 2
42-8 4600 4850 3
42-9 4900 5150 3
42-10 5400 5650 3
6014 645
6014 646
6014 647
6014 648
6014 649
6014 650
6014 651
6014 652
6014 663
6014 664
Fire protection sleeves RAS 29
needed where vacuum air pipes
are passed through walls.
Twosleevesaresuppliedincludingttings. 6014 716
Vacuum pipe RAS 23
earthed, 50mm Dia, 25 m roll. 247 209
Fabric and GRP pellet storage Silos
ArangeoffabricandGRPpelletstoragesilosare
also available, together with an interconnecting
exibleaugersystem.
Details available on
request
12
Hoval BioLyt (50-160)

Other Accessories
Accessories for Heating regulator TopTronic®T
Key-ModuleforHovalTopTronic®T
for additional functions.
Key-Modulconsistsof:
 FunctionkeyforpluggingintoTopTronic®T
with necessary sensors and electrical
connections.
Only one Key-Module is possible per
TopTronic®T.
Standardfunctionsalreadyincludedin
TopTronic®T.
- 1mixingcircuit
- 1heatingcircuitwithoutmixingoperation
- Domestic hot water loading circuit
Key-Module1
For2mixingcircuits.
Functionkey1,1flowsensor,2looseplugs. 6012 154
Key-Module2
Forsolidfuel/buffer vessel installation.
Functionkey2,3immersionsensors,4loose
plugs. 6012 155
Key-Module3
Forsolarplants.
Functionkey3,1collectorpanelsensor,1
calorifier sensor, 4 loose plugs.
6012 156
Key-Module4
For2mixingcircuitsandsolidfuel/buffer
vessel installation.
Functionkey4,1flowsensor,3immersion
sensors, 6 loose plugs.
6012 157
Key-Module5
For2mixingcircuitsandsolarplants.
Functionkey5,1flowsensor,1collectorpanel
sensor, 1 calorifier sensor, 6 loose plugs. 6012 158
Key-Module6
Forsolidfuel/buffer vessel installation and
solar plants.
Functionkey6,1collectorpanelsensor,4
immersion sensors, 6 loose plugs. 6012 159
Key-Module7
For2mixingcircuits,solidfuel/buffer vessel
installation and solar plants.
Functionkey7,1flowsensor,1collectorpanel
sensor, 4 immersion sensors, 8 loose plugs. 6012 160
Sensortype
Immersion/calorifiersensor:TypeKVT20/5/6
(L=5m)withoutimmersionsleeve.
flowsensor :TypeVF204Swithplug
collectorsensor :TypePT1000(Silicon)
FunctionsofKey-Modules:
Key- 2mixing solidfuel Solar
Module circuits buffervessel
2
1
4
5
6
7
3
M
1
2
3
4
5
6
7
1-7
M
M
M
M
M
M
M
Consult Hoval for specific applications
13
Hoval BioLyt (50-160)

Accessories for Heating regulator TopTronic®T
RoomstationRS-T
Forremotecontrolofcircuits.Includesroom
sensor, information and advanced program
keys. 2034 939
RemotecontrolRFF-T
Forsimpleremotecontrolofcircuits.Includes
room sensor, simple program keys and
temperature adjustment. 2022 239
AdditionaloutdoorsensorAF200
Foronemixingcircuitorforaveragevalue
(2 outdoor temperature sensors possible per
TopTronic
®
). 2022 995
ImmersionsensorKVT20/5/6S
With5mcableandplug(excludespocket). 6012 687
SurfacetemperaturesensorVF204S
Usable as flow or return sensor with 4m cable
and plug. 6012 688
Flow temperature limit thermostats Forunderfloorheating(1perheatingcircuit)
15-95°C,differential6K.
Clamp-on thermostat
RAK-TW1000.S
Thermostat with strap, without cable and plug. 242 902
Clamp-on thermostat
RAK-TW1000.S
Thermostat with strap, 4m long cable and plug. 6015 000
Immersion thermostat
RAK-TW1000.SSB150
Thermostatwithbrassnickel-plated½“pocket
x150mmlong. 6010 082
Other Accessories
14
Hoval BioLyt (50-160)

Typical hydraulic schematics
Page-5 Plant:
BDDT_ENG
Notes:
File: BDDT_ENG.vsd
Date Name
Attention! This hydraulic schematic only shows the basic principles and does not show all
the items of the installation. The installation must be in accordance withlocal regulations.
Page 5of 7
Pumps, Valves,
Pipework and
interconnecting wiring
not by Hoval.
drawn 01.10.09 LawShe
checked
Single BioLyt (>50) with a Buffer Vessel, Headers, two Mixed
Heating circuits and one Calorifier circuit.
SYSTEM: BDDT050
4
RS-T
AF
TopTronic T
2
D i e s i s t e i n
une r l a ubt e r
Weg!
G e h e n S i e
e i n e n S c h r i t t
z u r ü c k o d e r
l ö sch e n S i e
dieses Shape!
Sie habe n d i e
Möglichkeit ein
neues Shape zu
n e h m e n !!!
hovhovalhoval
hovalhovalhova
lhov alhov alhov
alhovalhovalho
valhovalhoval h
ovalhovalhoval
hovalhovalhova
lhov alhov alhov
alhovalhovalho
valhovalhoval h
ovalhovalhoval
h
DHWS
T
S L P
B1VF1
TT
M K 1
MYK1
B1VF2
T
T
M K 2
MYK2
B1VF2
T
T
M K 2
MYK2
D i e s i s t e i n
unerlaubter Weg!
G e h e n S i e ei n e n
Schritt zurück oder
lös chen Sie dieses
Shape!
S i e h a b e n d i e
M ö g l i c h k e i t e i n
n e u e s S h a p e z u
n e h m e n !!!
hovhovalhovalhova
lhovalhovalhovalho
valhovalhovalhoval
hoval hovalhovalho
valhovalhova
valhoval
hovalhova
BioLyt
(50-160)
BRU
P
YKR
YY
K F
D i e s i s t e i n
unerlaubter Weg!
Gehen Si e ei n en
S c h r i tt z u r ü c k
ode r l öschen Sie
dieses Shape!
S i e h a b e n d i e
Möglic h kei t e i n
neues S h ap e z u
n e h m e n !!!
hovhovalhovalhov
alhovalhovalhoval
ho valhovalhovalh
ovalhovalhovalho
valhovalhovalhova
lhovalhovalhovalh
ovalhovalhovalho
valhovalhovalhova
lhovalhovalhovalh
ovalhovalhovalho
valhovalhovalhova
lhovalhovalhovalh
ovalhovalhovalho
valho
TPF1
PF2
TPV
TD
Hoval
Hoval
PressVal
CWS
ATS
ATS
ATS ATS
ATS
ATS
ATS
ATS
ATS
AAV
SV
AAV
CWS
SF1
SF2
Buffer
Vessel Calorifier
RS-T Roomstation
AF Outdoorsensor
VF1 Flowsensor1
VF2 Flowsensor2
PF1 Buffervesselsensor1
PF2 Buffervesselsensor2
SF1 Calorifier sensor 1
SF2 Calorifier sensor 2
BRU Return sensor
MK1 Pumpmixedcircuit1
MK2 Pumpmixedcircuit2
B1 Flowtemperaturethermostat
(series connection with pump)
TPV Temperatureandpressurerelief
valve
TD Tundish to drain
SLP Calorifierloadingpump
PLP Bufferloadingpump
YK1 Actuatormixedcircuit1
YK2 Actuatormixedcircuit1
YKR Actuatorminimumreturn
temperature protection
CWS Coldwatersupply
DHW Domestic hot water supply
ATS Anti-thermalsiphondiptoprevent
gravity circulation
SOP Solarcirculationpump
KSPF Solartanksensor
 (calorifier/buffer)
KVLF Solarpanelflowsensor
 (PT1000)
Notice:
- This hydraulic schematic just shows the
basic principle. The installation must be
in accordance with local regulations.
- With underfloor heating an over
temperature thermostat has to be installed.
- Anti thermal siphon dip has to be installed.
- up to five boilers can be linked together to
providesequencecontrol
Page-6 Plant:
BDDT_ENG
Notes:
File: Bddt_eng.vsd
Date Name
Attention! This hydraulic schematic only shows the basic principles and does not show all
the items of the installation. The installation must be in accordance withlocal regulations.
Page 6of 7
Pumps, Valves,
Pipework and
interconnecting wiring
not by Hoval.
drawn 01.10.09 LawShe
checked
Single BioLyt (>50) with a Buffer Vessel, Headers, two Mixed
Heating circuits and one Calorifier circuit.
SYSTEM: BDDT060
7
RS-T
AF
TopTronic T
6
B1VF1
T
T
M K 1
MYK1
B1
VF2
TT
M K 2
MYK2
B1
VF2
TT
M K 2
MYK2
D i e s i s t e i n
unerlaubter Weg!
Gehen Si e ei n en
S c h r i tt z u r ü c k
ode r l ösc hen Sie
dieses Shape!
S i e h a b e n d i e
M ö g lic h kei t e i n
neues S ha p e z u
n e h m e n !!!
hovhovalhovalhov
alhovalhovalhoval
hovalhovalhovalh
ovalhovalhovalho
valhovalhovalhova
lhov alhovalhovalh
ovalhovalhovalho
valhovalhovalhova
lhov alhovalhovalh
ovalhovalhovalho
valhovalhovalhova
lhov alhovalhovalh
ovalhovalhovalho
valho
TPF1
PF2
D i e s i s t e i n
unerlaubter Weg!
G e h en S i e e i ne n
Schritt zurück oder
löschen Sie dieses
Shape!
S i e h a b e n d i e
Möglic h kei t e i n
n e u es S h a p e z u
n e h m e n ! ! !
hovhovalhovalhova
lhovalhovalhovalho
valhovalhov alhoval
hovalhovalhovalho
valhovalhova
valhoval
hovalhova
BioLyt
(50-160)
BRU
P
YKR
Y
Y
PLP
T
D i e s i s t e i n
une r l a ubt e r
Weg!
G e h e n S i e
e i n e n S c h r i t t
z u r ü c k o d e r
l ö s c h e n S i e
dieses Shape!
Sie haben d i e
Möglichkeit ein
neues Shape zu
n e h m e n ! ! !
ho vho valhoval
hovalhovalhova
lhovalhovalhov
alhovalhovalho
valhovalhovalh
ovalhovalhoval
hovalhovalhova
lhovalhovalhov
alhovalhovalho
valhovalhovalh
ovalhovalhoval
h
SLP
T
S F
KSPFT 2SLVFKSPF
TT
SOP
P
KVLFS 1KVLF
W
KRLF
Hoval
Hoval
PressVal
CWS
ATS
DHWS
CWS
AAV
AAV
AAV
ATS ATS
ATS
ATS
ATS
AAV
Buffer
Vessel MultiVal
Solar Panel
Collectors
BioLyt®boiler with
- Buffer vessel
- Free standing calorifier
- 1 or 2 mixed heating circuits
BioLyt®boiler with
- Buffer vessel
- Solar free standing calorifier
- 1 or 2 mixed heating circuits
15
Hoval BioLyt (50-160)

Typicalhydraulicschematics/HovalService
All BioLyt®boilers are commissioned by our
dedicated service team.
ForannualservicingofBioLyt®boilers and
otherequipmentpleasecontactourHoval
service department
e-mail:[email protected]
directdial:01636593413or593435
Notice:
- This hydraulic schematic just shows the
basic principle. The installation must be
in accordance with local regulations.
- With underfloor heating an over
temperature thermostat has to be installed.
- Anti thermal siphon dip has to be installed.
- up to five boilers can be linked together to
providesequencecontrol
Additional technical
and installation information
Additional technical and installation information is available to download from our website
www.hoval.co.uk(pleasegototheOperatingandMaintenanceInstructionsdownloadpage).
Informationisavailableonwaterqualityrequirements,assembly,operationandservicing.
Service
Page-1 Plant:
KC030
Notes:
File: KC030
Date Name
Attention! This hydraulic schematic only shows the basic principles and does not show all
the items of the installation. The installation must be in accordance withlocal regulations.
Page 1of 2
Pumps, Valves,
Pipework and
interconnecting wiring
not by Hoval.
drawn 01.10.09 LawShe
checked
B1
VF1
TT
M K 1
M
YK1
B1VF2
TT
M K 2
MYK2
TT
M K 2
M
YK2
B1VF2
D i e s i s t e i n
une r l a u b t e r
Weg!
Geh e n S i e
e i n e n S c h r i t t
z u r ü ck o d e r
l ö s c h e n S i e
dieses Shape!
Sie h a b en d i e
Möglichkeit ein
neues Shape zu
n e h m e n !!!
ho vhovalho val
hovalhovalhova
lhovalhovalhov
alhovalhovalho
valhovalhovalh
ovalhovalhoval
hovalhovalhova
lhovalhovalhov
alhovalhovalho
valhovalhovalh
ovalhovalhoval
h
DHWS
T
SF1
S L P
AF
TopTronic T
2
TopTronic T
D i e s i s t e i n
unerlaubter Weg!
Gehen S i e e i n e n
S c h r i tt z u r ü c k
od er löschen Sie
dieses Shape!
S i e h a b e n d i e
Mögl i c h kei t e i n
n e ue s S h a p e z u
n e h m e n !!!
hovhovalhovalhov
alhovalhovalhoval
hovalhovalhovalh
ovalhovalhoval ho
valhovalhovalhova
lhovalhovalhovalh
ovalhovalhoval ho
valhovalhovalhova
lhovalhovalhovalh
ovalhovalhoval ho
valhovalhovalhova
lhovalhovalhovalh
ovalhovalhoval ho
valho
T
SB-R3K SB-R3K
PF2
PF1
SF2
SLP1
D i e s i s t e i n
unerlaubter Weg!
G e h e n S i e e i n e n
Schritt zurück oder
löschen Sie dieses
Shape!
S i e h a b e n d i e
Möglic h kei t e i n
n e u es S h a p e z u
n e h m e n ! ! !
hovhovalhovalhova
lhovalhovalhovalho
valhovalhovalhoval
hovalhovalhovalho
valhovalhova
valhoval
hovalhova
BioLyt
1
(50-160)
P
Y
Y
RF1BRU1
YKR
YKR3YKR2YKR1
KKP1
SLP2
D i e s i s t e i n
unerlaubter Weg!
G e h e n S i e e i n e n
Schritt zurück oder
löschen Sie dieses
Shape!
S i e h a b e n d i e
Möglic h k e i t e i n
neues S h a p e z u
n e h m e n ! ! !
hovhovalhovalhova
lhovalhovalhovalho
valhovalhovalhoval
hovalhovalhovalho
valhovalhova
valhoval
hovalhova
BioLyt
2
(50-160)
P
Y
Y
RLF2
BRU2
YKR1
YKR
YKR3YKR2
KKP2
SV
ATS
CWS
ATS
Hoval
Hoval
PressVal
CWS
AAV AAV
AAV
SV
TPV
TD
ATS
ATS
ATS
ATS
ATS
ATS
Buffer
Vessel Calorifier
2 x BioLyt®boilers with
- Buffer vessel
- Free standing calorifier
- 2 mixed heating circuits
RS-T Roomstation
AF Outdoorsensor
VF1 Flowsensor1
VF2 Flowsensor2
PF1 Buffervesselsensor1
PF2 Buffervesselsensor2
SF1 Calorifier sensor 1
SF2 Calorifier sensor 2
BRU1 Return sensor 1
BRU2 Return sensor 2
MK1 Pumpmixedcircuit1
MK2 Pumpmixedcircuit2
B1 Flowtemperaturethermostat
(series connection with pump)
TPV Temperatureandpressurerelief
valve
TD Tundish to drain
SLP Calorifierloadingpump
KKP1 Bufferloadingpump1
KKP2 Bufferloadingpump2
YK1 Actuatormixedcircuit1
YK2 Actuatormixedcircuit1
YKR1 Actuatorminimumreturn
temperature protection 1
YKR2 Actuatorminimumreturn
temperature protection 2
CWS Coldwatersupply
DHW Domestic hot water supply
ATS Anti-thermalsiphondiptoprevent
gravity circulation
16
Hoval BioLyt (50-160)

August 2011
An expert partner
Technical advice
We are happy to assist you and your planning partners
in developing inteligent systems, allowing you to take
advantageofourexpertiseandtheexperienceofour
specialists.
After sales
Forspecialistcommissioningandmaintenanceofyour
Hovalequipment,contactourserviceandspares
department.
Responsibilty for energy and environment
One-stop shopping
With us you can easily incorporate gas, oil, heat pump,
solar,CHP,orbiomassenergysolutionsinto
your heating system.
Hoval Ltd
Northgate
Newark-on-Trent
Nottinghamshire
NG24 1JN
United Kingdom
Phone [phone]
Fax [phone]
email [email protected]
www.hoval.co.uk
Hovalfollowsapolicyofcontinuedimprovementandreservestherighttochangespecications