Fröling PE1 Pellet 20 User manual

Assembly Instructions
Pellet boiler PE1 Pellet 20/35
Read and follow the instructions and safety informations!
Technical changes, typographical errors and omissions reserved!
M2030120_en-us | Edition 11/11/2020
Froling GesmbH | A-4710 Grieskirchen, Industriestraße 12 | www.froeling.com

Inhaltsverzeichnis
1 Supplementary instructions 4
2 Safety 5
2.1 Explanation of symbols 5
2.2 Permitted uses 6
2.3 Requirements at the place of installation 6
2.3.1 Approval for the heating system 6
2.3.2 Space required 7
2.3.3 Requirements for central heating water 7
2.3.4 Ventilation requirements for boiler room 8
2.3.5 Requirements for the heating system 9
2.3.6 Requirements for the installation room (boiler room) 9
2.3.7 Requirements for the fuel store 9
2.3.8 Hose lines 9
2.3.9 Combination with a storage tank 10
2.3.10 Requirements for the chimney connection 10
Basic data for designing the chimney connection 11
2.4 Safety devices 12
2.4.1 Position of safety devices 12
2.4.2 Description of safety devices 12
2.5 Safety markers 13
2.5.1 Mandatory signs 13
2.5.2 Prohibitions 14
2.5.3 Warning signs 14
2.5.4 Additional safety signage 15
2.5.5 Signage on the boiler 16
Notice of risks during installation 16
Notice of risks during operation 17
Notice regarding procedures in an emergency 18
2.5.6 Sign on fuel store 19
2.6 Residual risks 19
2.6.1 Basic risks 19
2.6.2 Risks from electricity 21
2.6.3 Danger from movement of the system 21
2.6.4 Danger from fire and explosion 22
2.6.5 Danger from high temperatures 23
2.6.6 Risks from flue gases, incorrect fuel and other equipment 24
2.7 What to do in the case of danger 26
2.8 Staff requirements 27
2.9 Personal protective equipment 30
2.10 Replacement parts 30
2.11 Environmental protection 31
2.12 The operator's responsibilities 31
3 Technical information 33
3.1 PE1 Pellet 20/35 dimensions 33
3.2 Components and connections 34
Inhaltsverzeichnis
2 Froling GesmbH | A-4710 Grieskirchen, Industriestraße 12 | www.froeling.com

3.3 Technical data 35
3.3.1 Emission data 36
3.4 External suction module 37
4 Assembly 38
4.1 Tools required 38
4.2 Transport 38
4.3 Positioning 38
4.4 Temporary storage 39
4.5 Install PE1 Pellet 40
4.5.1 Remove boiler from pallet 40
4.5.2 PE1 Pellet 35 – Prepare the boiler for transport and setup 41
4.5.3 Align the boiler with the floor 43
4.5.4 Prepare for room air-independent operation 43
4.5.5 Installing the discharge system 44
Installing the external suction module 44
Fit the suction hoses to the boiler 46
Assembly information for hose lines 47
4.5.6 Install the protective plate for the flue pipe 49
4.5.7 Electrical connection 50
Potential equalisation 51
Information on circulating pumps 52
4.6 Final installation steps 53
5 Start-up 54
5.1 Before commissioning / configuring the boiler 54
6 Decommissioning 55
6.1 Mothballing 55
6.2 Disassembly 55
6.3 Disposal 55
7 Notes 56
Inhaltsverzeichnis
Assembly Instructions PE1 Pellet 20/35 | M2030120_en-us 3

1 Supplementary instructions
These instructions ensure safe and efficient use of the (hereinafter referred to as the
“system"). These instructions are a component part of the system and must be kept
next to the system and within the immediate reach of staff at all times.
Staff must carefully read and understand these instructions before commencing all
work. All the safety instructions and operating guidelines specified in this manual must
be observed to ensure safety at work. In addition, the local accident prevention regula-
tions and general safety regulations apply to the area of application of the system.
Images in these instructions are intended solely to aid understanding and may differ
from the actual design.
NOTICE SAVE THESE INSTRUCTIONS!
Copyright
This instruction manual is protected by copyright.
This instruction manual must not be transferred to third parties, reproduced in any
form – even excerpts thereof – or the contents used and/or disclosed without the writ-
ten consent of Froling Ges.m.b.H. (hereinafter “manufacturer”), unless for internal pur-
poses. Failures to comply with this shall incur damages. The manufacturer reserves
the right to assert further claims.
The manufacturer holds the copyright.
© Froling Ges.m.b.H.
1Supplementary instructions
4 Froling GesmbH | A-4710 Grieskirchen, Industriestraße 12 | www.froeling.com

2 Safety
2.1 Explanation of symbols
Safety information
Safety information in these instructions is indicated by symbols. The safety information
is preceded by signal words which reflect the extent of the risk.
DANGER This symbol and signal word combination indicates a hazardous situation
which will lead to death or serious injury if it is not avoided.
WARNING This symbol and signal word combination indicates a hazardous situation
which could lead to death or serious injury if it is not avoided.
CAUTION This symbol and signal word combination indicates a hazardous situation
which could lead to slight or minor injuries if it is not avoided.
NOTICE This signal word indicates important, but not safety-related information e.g.
damage to property or pollution
Safety information in operating instructions
Safety information can refer to certain, individual operating instructions. To avoid dis-
rupting the flow of the text when you are performing the action, this safety information
is not incorporated in the operating instruction. The signal words set out above are
used.
Example:
❒Undo screw
❒CAUTION! Pinching hazard at cover
Take care when closing the cover.
❒Tighten the screw
Special safety information
The following symbols are used to draw your attention to particular hazards
Tips and recommendations
Italics indicate useful tips and recommendations as well as information for efficient and
smooth running.
Safety 2
Explanation of symbols
Assembly Instructions PE1 Pellet 20/35 | M2030120_en-us 5

Other markers
The following markers are used in these instructions to highlight operating guidelines,
results, lists, references, and other elements:
Marker Explanation
❒Step-by-step operating instructions
➥Results of actions
➾Links to sections of these instructions and oth-
er relevant documents
▪Lists without a specified order
[Button] Operating elements (e.g. button, switch), dis-
play elements (e.g. signal lights)
“Display“ Screen elements (e.g. buttons, assignment of
function keys)
Units used
All units of measure are specified in these operating instructions in both SAE units and
SI units. The SAE unit appears first, followed by the SI unit in brackets.
Example using information about heat output: 17 (5) BTU/h (kW) equals
17 BTU/h (SAE system) or 5 kW (SI system).
2.2 Permitted uses
The Froling PE1 Pellet boiler is intended exclusively for heating up heating water. Only
use those fuels specified in the “Permitted fuels” section.
Permitted use includes compliance with all the specifications in this instruction man-
ual.
Any use other than or above and beyond the permitted use is considered misuse.
2.3 Requirements at the place of installation
2.3.1 Approval for the heating system
The appropriate supervisory authority (inspection agency) must always be informed
when installing or modifying a heating system, and authorization must be obtained
from the building authorities. Also observe ANSI/NFPA 211 and CAN/CSA B365 for
the installation.
2Safety
Permitted uses
6 Froling GesmbH | A-4710 Grieskirchen, Industriestraße 12 | www.froeling.com

2.3.2 Space required
▪ The system should generally be set up so that it is accessible from all sides allow-
ing quick and easy maintenance.
▪Regional regulations regarding necessary maintenance areas for inspecting the
chimney should be observed in addition to the specified minimum distances!
▪ Observe the applicable standards and regulations when setting up the system.
▪ Observe additional standards for noise protection
(ÖNORM H 5190 - Noise protection measures)
FOR SAFE INSTALLATION AND OPERATION CLEARANCES TO COMBUSTIBLES
MUST BE MAINTAINED.
The diagram below shows the required space for the system in the boiler room.
The boiler may only be installed on non-combustible floor with these clearances!
B
C1
C2D
A
B
D
A
E
C11
2
PE1 Pellet 20 PE1 Pellet 35
A24 inches (600 mm)
B12 inches (300 mm)
C12 inches (300 mm)
C1 9.8 inches (250 mm)
C2 39.5 inches (750 mm) 31.1 inches (790 mm)
D3.9 inches (100 mm)
E19.7 inches (500 mm)1)
1.Maintenance area to expand the WOS springs upwards
2.3.3 Requirements for central heating water
Water quality
Water of the following quality is required for the first fill:
▪The water must be clean, pure or purified as well as odorless and must not contain
suspended matter.
▪ The water hardness must not exceed 190 grain/fl.oz. or 100 ppm CaCO3
(100 mg/L), i.e. soft water is required.
▪ The chlorine concentration in the water must not exceed 58 grain/fl.oz. (30 mg/L).
▪ The pH value in the heating system must be between 8.0 and 8.6.
Safety 2
Requirements at the place of installation
Assembly Instructions PE1 Pellet 20/35 | M2030120_en-us 7

▪ If the water quality is too poor, use additives to prepare the water. If you are top-
ping up with small amounts, always use clean water.
NOTICE The hot water must not be used directly in swimming pools or thermae. Use a
heat consumer of the right size to consume the heat. Do not use the heating
water as drinking water.
To ensure good water quality during operation, avoid leaks and use a closed heating
system. If necessary, use a return temperature control.
First fill
To prevent air from getting into the heating system during the first fill, fill the filling
hose with water.
Frost protection
You can add anti-freeze to the heating water, however, this can reduce the heating ef-
ficiency. Always follow the manufacturer’s dosing instructions when using anti-freeze,
as using the incorrect amount can cause corrosion. Check the concentration of the an-
ti-freeze at regular intervals.
2.3.4 Ventilation requirements for boiler room
Introduction
The external combustion air must meet certain requirements to ensure that adequate
combustion air is supplied to the boiler and no by-products from the combustion get
into the boiler room.
Ventilation air for the boiler room must be taken from and expelled directly outside,
and the openings and air ducts must be designed to prevent weather conditions (e.g.
from foliage or snowdrifts), plants or animals from obstructing the air flow. Permanent
ventilation is required to ensure that the boiler runs smoothly.
In North America there are several regulations which govern the minimum require-
ments of combustion air for chimneys.
The boiler must be installed in such a way that it receives adequate ventilation and
combustion air and that the fuel in the boiler burns. The exhaust air must be expelled
safely outside via the chimney and maintained within a safe temperature range.
Boiler rooms are usually so small that normal ventilation does not provide enough air
and air must be brought in from outside. External air openings and air channels must
be of an appropriate size to supply adequate combustion air. The design must comply
with NFPA 211.
Consult your local chimney inspector for the installation and install the boiler in accord-
ance with the applicable local regulations.
Recommended size of air openings according to NFPA 54 and NFPA 211:
The boiler requires a fresh air supply of between 1 sq.in. per 2,500 BTU/h and
1 sq.in. per 4,000 BTU/h (550 mm²/kW and 880 mm²/kW), depending on local condi-
tions and the climate zone. Local conditions may necessitate an additional air supply.
2Safety
Requirements at the place of installation
8 Froling GesmbH | A-4710 Grieskirchen, Industriestraße 12 | www.froeling.com

2.3.5 Requirements for the heating system
▪ The whole heating system must be designed in accordance with relevant national
and local regulations.
▪The boiler’s nominal load must be adjusted to the calculated heating requirements
of all the consumer loads connected in the heating circuit in summer and winter.
▪ The heating system must be big enough to transport the heat generated by the
boiler and an additional heat source (if present). The pressure throughout the
whole system including all heating zones must be even.
▪ Special equipment must be available for filling and ventilating the heating circuit.
▪ All fitted pipes must be water-tight and air-tight and insulated for safety reasons.
▪ If there is a risk of parts of the heating system freezing, add anti-freeze to the wa-
ter in these heat zones.
2.3.6 Requirements for the installation room (boiler room)
▪ There must not be a potentially explosive atmosphere in the boiler room as the
boiler is not suitable for use in potentially explosive environments!
▪The boiler room must be frost-free!
▪ The boiler does not provide any light, so the customer must ensure sufficient light-
ing in the boiler room in accordance with national workplace design regulations!
▪ When using the boiler at an altitude higher than 2,000 meters above sea level the
manufacturer must be contacted!
▪ Fire hazard due to combustible materials!
Never store flammable substances near the boiler. Never place flammable objects
(e.g. clothing, etc.) on the boiler to dry.
▪ Damage due to impurities in combustion air!
Do not use any solvents or cleaning agents containing chlorine in the boiler room.
▪ Keep the air suction opening of the boiler free of dust!
WARNING Do not store fuel within installation clearances!
2.3.7 Requirements for the fuel store
▪ The fuel store must be protected against the direct effects of weather.
▪Before refilling the fuel store, check for pellet dust and clean if necessary.
▪ When fans are used in the fuel storage area, they should be installed so as not to
create negative pressure in the rom where the solid-fuel-burning appliance is lo-
cated.
2.3.8 Hose lines
For the hose lines used with the suction device, the universal suction systems, and the
silo delivery unit, please observe the following:
Fuel delivery hose must be supplied by your local Froling boiler representative and
must be manufactured according to ISO 3994 (specifies requirements for helical ther-
moplastic reinforced hoses) and certified to UL 94 HB (flammability of plastic materi-
als).
Safety 2
Requirements at the place of installation
Assembly Instructions PE1 Pellet 20/35 | M2030120_en-us 9

2.3.9 Combination with a storage tank
A storage tank does not need to be used for the heating system to run smoothly. How-
ever, we recommend that you use the system with a storage tank to ensure a continu-
ous supply of fuel in the boiler’s ideal output range.
For the correct dimensions of the storage tank and the line insulation (in accordance
with ÖNORM M 7510 or guideline UZ37) please consult your installer or Froling.
2.3.10 Requirements for the chimney connection
The chimney connection must be big enough to channel flue gases from the building.
The whole flue gas system must be designed to prevent possible seepage, insufficient
feed pressure and condensation.
The manufacturer recommends fitting a draft regulator to limit the pressure to 0.10 mm
WC (25 Pa). The draft regulator should be fitted directly below the chimney connection
where the pressure is very low.
The boiler must be connected to a brick chimney or a shop-made chimney in accord-
ance with UL 103 HT (ULC S629 in Canada). The chimney must be clean and in good
condition at the time of installation.
The pipe unions within the chimney must be made of stainless special steel (with 304,
316 or 321 alloys). The individual pipe sections must be joined together with at least
three self-tapping screws and the joins sealed using high-temperature silicone. The
flue gas pipe must not contain more than two 90° bends.
All connections must conform to NFPA 211. Consult your local chimney sweep for the
installation and install the boiler in accordance with the applicable local regulations.
The chimney connection, ventilation ducts and fresh air openings must not be closed
over or blocked.
The flue gas pipe must not be displaced by an attic, loft, fuel store or similar areas.
2Safety
Requirements at the place of installation
10 Froling GesmbH | A-4710 Grieskirchen, Industriestraße 12 | www.froeling.com

Basic data for designing the chimney connection
Description PE1 Pellet
20 35
Flue gas temperature at nominal load °C 150 160
°F 300 320
Flue gas temperature at partial load °C 100 100
°F 210 210
Flue gas mass flow at nominal load kg/h 52 90
lb/h 115 198
Flue gas mass flow at partial load kg/h 20 40
kg/s 44 88
Required feed pressure at nominal load Pa 5
in WC 0.03
Required feed pressure at partial load Pa 2
in WC 0,012
Maximum permissible feed pressure Pa 30
in WC 0.10
Flue pipe diameter inches 5 6
mm 129 149
Supply air connection for room air-inde-
pendent operation
Inches 3 4
mm 80 100
Combustion air volume at nominal load m³/h 39 68
ft³/h 1377 2401
CAUTION ADJUSTMENT OF THE FLUE DRAFT HIGHER THAN 0.10 INCHES WATER CLO-
UMN (25 Pa) COULD CAUSE FIRE TO BURN OUT OF CONTROL AND CAUSE
AN UNSAFE CONDITION!
❒Maximum permitted setting: 0.10 inches WC (25 Pa)
Ideal setting: 0.04 inches WC (10 Pa)
Safety 2
Requirements at the place of installation
Assembly Instructions PE1 Pellet 20/35 | M2030120_en-us 11

2.4 Safety devices
2.4.1 Position of safety devices
34
5
2.1
0
1
SV
2.1 BOILER OFF (switches off the boiler to prevent overheating)
❒Tap “Boiler OFF”
➥Automatic mode is switched off
➥Control system follows the boiler shutdown procedure
➥Pumps continue to run
3 MAIN SWITCH (switches off the power supply)
Before carrying out work on/in the boiler:
❒Tap “Boiler OFF”
➥Automatic mode is switched off
➥Control system follows the boiler shutdown procedure
❒Switch off the main switch and let the boiler cool down
4 SAFETY TEMPERATURE LIMITER (STL) (protection against overheating)
The STL (high-limit thermostat) switches off the combustion system when the boiler
reaches 100°C. The pumps continue to run. Once the temperature falls below approx.
75°C, the STL can be reset mechanically.
5 DOOR SWITCH (protection against access to moving components)
If the insulated door opens while the boiler is operating, all units stop in order to pre-
vent injuries that may be caused by moving components. If the insulated door remains
open for more than 10 seconds, the boiler is switched off automatically.
SV SAFETY VALVE (protection against overheating/excess pressure)
When the boiler pressure reaches a maximum of 2 bar, the safety valve opens and the
heated water is blown off in the form of steam.
2.4.2 Description of safety devices
Emergency stop button (optional)
Pressing the emergency stop button stops the entire boiler (fuel infeed, combustion
process in the boiler and the blower fan). Only the pump in the heating circuit contin-
ues to run to be able to dissipate the residual heat. The emergency stop button is on
the same safety chain as the high-limit thermostat.
After an emergency stop button has been pressed, it must be released again by turn-
ing it and the fault acknowledged at the SPS so that you can turn the heating system
back on again.
2Safety
Safety devices
12 Froling GesmbH | A-4710 Grieskirchen, Industriestraße 12 | www.froeling.com

The system is controlled via the Lambdatronic P 3200. The "Boiler OFF" command al-
lows you to switch off the boiler in the event of overheating. After the boiler has been
switched off via the control system, automatic mode is switched off and the control
shuts the boiler down according to the shutdown procedure. The pumps continue to
run.
Safety valve (provided by the customer)
Depending on the boiler type which is use, different kinds of pressure values of the
safety valves are necessary! When the boiler reaches a pressure of 30 psi (2 bar),
43.5 psi (3 bar) or 45 psi (3 bar) the safety valve opens and the heated water is blown
off in the form of steam.
Technical specifications
2.5 Safety markers
2.5.1 Mandatory signs
Refer to the operating instructions
Only use the indicated system once you have read the operating instructions.
Wear hearing protection
This sign indicates that hearing protection must be worn in the area concerned.
Wear protective gloves
This sign indicates that protective gloves must be worn in the area concerned.
Wear safety shoes
This sign indicates that safety shoes must be worn in the area concerned.
Wear a dust mask
This sign indicates that a dust mask must be worn in the area concerned.
Keep the doors closed
Keep the doors closed during operation.
Turning off the main switch
Switch off the main switch and take precautions to prevent accidental switching on be-
fore carrying out work to the system
Switch off the main switch for the fuel infeed and take precautions to prevent acciden-
tal switching on before entering the fuel storage room.
Securing the main switch
Switch off the main switch and secure with a padlock when carrying out maintenance
work to the boiler.
Safety 2
Safety markers
Assembly Instructions PE1 Pellet 20/35 | M2030120_en-us 13

2.5.2 Prohibitions
Unauthorized access prohibited
Only persons authorized by the operator may enter the danger zone and fuel storage
room. Keep children away! Keep the fuel storage room locked and keep the access
key in a safe place. Protect the fuel from moisture.
No fire, open flames or smoking
Areas marked with this are at risk of fire or explosion. Keep ignition sources away from
these areas.
2.5.3 Warning signs
Risk of falling
There is a risk of falling when working at heights in the fuel storage room or on compo-
nents of the fuel infeed. Use a suitable ladder or hoist for all work.
Automatic start-up
This sign indicates that there is a risk of the system starting up automatically. Work
may only be carried out in areas with this marking if the system has been secured.
Electric current
Only licensed electricians may work in workspace with this marking.
Unauthorized persons are not permitted to enter work areas with this marking or open
the cabinet with this marking.
Risk of collapse
There is a risk of collapse and being buried alive as a result of cavity formation in the
fuel storage room. Never step on piles of fuel.
Harmful or irritant materials
These materials can be irreparably harmful to health, trigger allergic reactions or irri-
tate the mucous membranes.
Observe the information on the packaging and containers.
Danger from carbon monoxide
There is a risk of poisoning from a possible concentration of carbon monoxide in the
fuel storage room and boiler room. Ventilate the fuel storage room for at least 15 mi-
nutes before entering. Two people must always be present when working in the fuel
storage room. The access door must be kept open at all times. Also wear a dust mask
because of the high dust levels.
Hand injuries
Keep hands away from areas bearing this warning.
There is a risk that your hands could get trapped, pulled in or otherwise injured.
Hot surfaces
Hot surfaces, such as hot system parts, may not always be obvious. Do not touch
these parts without protective gloves.
2Safety
Safety markers
14 Froling GesmbH | A-4710 Grieskirchen, Industriestraße 12 | www.froeling.com

Crushing hazard
Keep hands away from areas bearing this warning.
There is a risk that your hands could get trapped, pulled into or otherwise injured in
automatic screws.
Risk of falling
There is a risk of falling in the fuel store because of slippery surfaces or fuel lying
about. Take extreme care and wear personal protective equipment.
Risk of injury at fans
Keep hands away from areas bearing this warning.
There is a risk that your hands could get trapped, pulled into or otherwise injured in
automatic fans.
Risk of being buried alive
There is a risk of being buried alive in the fuel storage room. Keep out of the fuel stor-
age room, especially during filling.
2.5.4 Additional safety signage
Warning sign for covers
Do not modify the system peripherals. The covers must be kept shut during operation.
DO NOT ALTER THIS EQUIPMENT IN ANY WAY!
KEEP COVER CLOSED DURING OPERATION!
A9690009_US
Safety 2
Safety markers
Assembly Instructions PE1 Pellet 20/35 | M2030120_en-us 15

2.5.5 Signage on the boiler
Notice of risks during installation
PE1 PELLET - WOOD PELLET FIRED BOILER
A 2150 00 17
INSTALLATION HAZARDS
Install, modify and use only in accordance with manufacturer’s manuals. Refer to authorities having jurisdiction for proper
installation. Contact local building and fire officials about restrictions and installation inspection in your area. If there are no
applicable local codes, follow ANSI/NFPA 211 and CAN/CSA B365. Special precautions are required for passing the chimney
through a combustible wall or ceiling.
Inspect and clean exhaust system, heat exchanger, burner, pellet hopper and ash boxes frequently in accordance with owner’s
manual.
Basic boiler data for layout of chimney system PE1 PELLET
Quantity Unit 20 35
Flue gas temperature
Rated / partial load °F °C 300 / 210 150 / 100 320 / 210 160 / 100
Minimum draft at boilers flue gas retawsehcni30.0noitcennoc column (5 Pa)
retawsehcni01.0noitcennocsageulfsreliobtatfardmumixaM column (25 Pa)
Flue gas connector Diameter 5 inches
(129 mm) 6 inches (149 mm)
Maximum water temperature °F
°C 194 90 )rab2(isp03erusserpgnikrowelbawollamumixaM
For detailed design information please refer to Installation Manual! For unit specifications, see Listing Label! For supply connections
use No. 14 AWG (2.1mm²) or larger wires acceptable for at least 194°F (90°C). Use copper. Use regular overcurrent protection
device 15 AMP, two phases (L1 & L2).
DANGER!
Working on electrical components may cause severe injuries from electric shocks!
WARNING!
The electrical system of the boiler shall be supplied from a double 115 V 60 Hz (nominal 230 V AC) 15 amp branch circuit
including neutral and earth connection. For wiring instructions please refer to Installation Manual!
Chimney must be 5” (129mm – PE1 Pellet 20) or 6’’ (149 mm – PE1 Pellet 35) diameter listed UL-103 HT or ULC-S629
residential all-fuel type or tile-lined masonry. Flue connector pipe must be 5” (129mm – PE1 Pellet 20) or 6’’ (149 mm – PE1
Pellet 35) diameter made of a minimum 24 MSG black steel.
Inadequate design, installation and maintenance of the flue gas system will lead to insufficient chimney draft and could result
in Danger of Life or Severe Injury caused by serious faults in combustion, e.g. explosively combustion of carbonization gases
and flash fires!
This boiler requires fresh air for safe operation and must be installed so there are provision for adequate combustion and
ventilation air!
CAUTION!
DO NOT CONNECT THIS UNIT TO A CHIMNEY FLUE SERVING ANOTHER APPLIANCE!
LOAD FUEL CAREFULLY OR DAMAGE MAY RESULT.
REFER TO OWNER´S MANUAL. DO NOT ALTER THIS EQUIPMENT IN ANY WAY.
UNSAFE TO ADJUST FLUE DRAFT HIGHER THAN 0.10 INCHES WATER COLUMN (25 Pa)
MAY BE CONNECTED TO AN EXISTING BOILER SYSTEM.
Flooring must be a minimum 3/8’’ (10 mm) non-combustible material covering the installation clearance area! The floor must
be level and reinforced if required. For construction of the floor beneath the boiler mind the weight of boiler, water content and
wood fuel according to the Installation Manual!
This boiler is for use with an automatic stoker only!
Use original spare parts only. Installation of non-licensed replacement parts will void the warranty!
2Safety
Safety markers
16 Froling GesmbH | A-4710 Grieskirchen, Industriestraße 12 | www.froeling.com

Notice of risks during operation
PE1 PELLET - WOOD PELLET FIRED BOILER
A 2151 00 17
OPERATION HAZARDS
NOTICE! Burn Wood Pellets only as specified in Owner’s Manual!
Pellet Fuel Institute (PFI) “Super Premium” or “Premium” recommended.
DANGER! Risk of Fire or Explosion!
Do not burn garbage, gasoline, drain oil, or other flammable liquids.
DO NOT BURN GARBAGE, GASOLINE, NAPHTA, ENGINE OIL, OR OTHER INAPPROPRIATE MATERIALS!
DO NOT USE CHEMICALS OR FLUIDS TO START UP THE FIRE.
Use of inappropriate fuels can result in Danger of Life or Severe Injury caused by explosive combustion and flash
fires!
Burning fuels other those designated in the manual will void the warranty!
DANGER! Explosive Gases!
Never open Boiler doors, Covers or Heat Exchanger Cask Cover during operation!
Faulty operation of boiler system will cause Danger of Life or Severe Injury and Material Damage!
TO AVOID INJURY FROM MOVING PARTS; SHUT OFF BOILER CONTROL SYSTEM BEFORE OPENING
BOILER DOORS, AND COVERS!
WARNING! Risk of Fire!
Do not burn garbage, gasoline, drain oil, or other flammable liquids or materials.
KEEP ALL BOILER DOORS, FUEL STORAGE DOOR AND ALL COVERS TIGHTLY CLOSED DURING
OPERATION!
AFTER OPENING BOILER DOORS AND COVERS; CLOSE ALL DOORS AND COVERS TIGHTLY!
DO NOT OPERATE WITH FLUE DRAFT EXCEEDING 0.10 INCHES WATER COLUMN (25 Pa)!
Do not operate with flue draft exceeding 0.10 inches in water column (25 Pa).
UNSAFE TO ADJUST FLUE DRAFT HIGHER THAN 0.10 INCHES WATER COLUMN (25 Pa)!
THE HEAT EXCHANGER, DRAFT INDUCER, FLUE PIPE, AND CHIMNEY MUST BE CLEANED REGULARLY
TO REMOVE ACCUMULATED CREOSOTE AND ASH. ENSURE THAT THE HEAT EXCHANGER, FLUE PIPE,
AND CHIMNEY ARE CLEANED AT THE END OF HEATING SEASON TO MINIMIZE CORROSION DURING
THE SUMMER MONTHS. THE APPLIANCE, FLUE PIPE, AND CHIMNEY MUST BE IN GOOD CONDITION.
THESE INSTRUCTIONS ALSO APPLY TO A DRAFT INDUCER IF USED.
Do not store fuel or other combustible material within marked installation clearances!
Faulty operating conditions not complying with Owner’s Manual, such as insufficient combustion air, incorrect or
insufficient cleaning and maintenance or non-permitted fuel could result in Danger of Life or Severe Injury caused
by serious faults in combustion (e.g. spontaneous combustion of carbonization gases or flash fires)!
Inspect and clean flues and chimney regularly!
First firing during start-up of boiler system shall be carried out in attendance of an authorized installer or
manufacturer’s representative only! Disregarding of warning may cause damage or explosion of combustion
chamber and severe injuries unfavorably!
CAUTION! Hot surfaces!
Hot parts and the flue pipe can cause serious burns!
Do not touch during operation.
Maximum draft marked on nameplate.
Unauthorized access to the boiler room and pellets store could result in personal injury and damage to property!
FOR SAFETY KEEP FIRING AND ASHPIT DOORS TIGHTLY CLOSED.
Keep children away.
Always use protective gloves during maintenance.
Always use control handles when open boiler doors.
Insulate flue pipe and do not touch during operation.
Do not carry out maintenance when the boiler is hot.
Do not touch hot surfaces behind Boiler doors and Covers.
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Assembly Instructions PE1 Pellet 20/35 | M2030120_en-us 17

Notice regarding procedures in an emergency
PE1 Pellet – WOOD PELLET FIRED BOILER
A 2152 00 17
EMERGENCY PROCEDURES
DANGER! In case of strong smell of flue gas!
Flue gases can cause fatal poisoning!
- Do not open any boiler doors or covers, or fuel transportation system door or covers!
- Turn off the boiler by pressing “Boiler OFF” ( )
- Air the room where boiler is installed!
- Close the door of the boiler room and doors to living areas!
DANGER! In the event of loss of electrical power!
- Do not open any boiler doors or covers, or fuel transportation system doors or covers!
- Boiler Control automatically restarts after power fail restart.
- Half an hour after power has returned, check system for normal operation and compare the pressure gauge
reading to initial settings. If system pressure is low, replenish water to the heating system according
plumber’s instructions.
DANGER! In the event of runaway fire!
- Call the fire department!
- Turn off Emergency Switch, if installed.
- Do not open any boiler doors or covers, or fuel transportation system doors or covers!
- Do not switch off Main switch at Boiler!
- Evacuate your house.
- If possible, wet your entire roof with a garden hose.
- When there is no more risk of runaway fire, turn on Emergency Switch and resume to normal operation
of the system.
To cool overheated boiler (over 220°F / 105°C)!
- Turn off Emergency Switch, if installed.
-Do not open any boiler doors or covers, or fuel transportation system doors or covers!
- Turn off boiler by pressing “Boiler OFF” ( )
- Open all mixer taps, switch on all pumps.
- Leave the boiler room and close the door.
- Open all hot water faucets.
- Turn all thermostats in your house to their highest temperature settings and open all windows
if room heat is too hot
- When boiler temperature has dropped below 180°F (82°C), reverse the above steps.
- In case Safety Temperature Limit Switch automatically has been activated please refer to Owner’s Manual.
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18 Froling GesmbH | A-4710 Grieskirchen, Industriestraße 12 | www.froeling.com

2.5.6 Sign on fuel store
The following signage must be posted in the access area of the fuel store. It explains
the correct fuel store procedures.
F
2.6 Residual risks
The system has been designed to the state of the art and in accordance with current
safety requirements. There are, however, still some residual risks which require care
and attention. The residual risks and consequential procedures and measures are list-
ed below.
2.6.1 Basic risks
Incorrect operation
WARNING Risk of injury from operating the system incorrectly!
❒Modifications to the control system must only be undertaken in consultation with
the manufacturer.
➥Modifying parameters on the control system can cause malfunctions.
Noise
WARNING Hearing loss from noise!
❒Always wear hearing protection when working around the discharge system
➥Depending on the discharge system and fuel, the noise level inside the dis-
charge system can reach over 80 dB(A) during transportation of the fuel.
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Assembly Instructions PE1 Pellet 20/35 | M2030120_en-us 19

Risk of falling
WARNING Risk of falling when working close to the boiler!
❒When working on ladders, always ensure that the ladder is securely positioned on
a firm and even surface.
❒Always observe the relevant safety regulations when working with a hoist.
❒Never step on the boiler.
➥Careless work on ladders or hoists during installation, maintenance and repair
work can cause injury.
Working in the fuel store
WARNING Risk of injury when carrying out work in the fuel store
❒Switch the boiler off at the control system before entering the fuel store.
❒Turn off the boiler’s main switch.
❒Never climb onto piles of fuel.
❒For safety reasons never work in the fuel store alone. Take another person with
you.
❒Always wear personal protective equipment for work (protective clothing, safety
shoes, protective gloves, dust mask, protective goggles).
❒Also observe the information on the notice on the access door to the fuel store.
➥Piles of fuel are at risk of caving in if you stand on them when working in the
fuel store. There is also a risk of poisoning due to an increased concentration
of carbon monoxide in the air.
Dirt and objects lying around
CAUTION Risk of injury from stumbling on dirt or objects lying around!
❒Always keep the boiler room clean and tidy.
❒Take any items no longer required out of the boiler room and, in particular, re-
move from ground level.
➥Dirt and objects lying around the boiler room constitute a risk of slipping and
tripping. Falling can result in injury.
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Residual risks
20 Froling GesmbH | A-4710 Grieskirchen, Industriestraße 12 | www.froeling.com