Froling P1 Pellet User manual

Installation Instructions
Pellet boiler P1 Pellet
Translation of the original German installation instructions for technicians
Read and follow the instructions and safety information!
Technical changes, typographical errors and omissions reserved!
M1440213_en | Edition 23/09/2013
Froling GesmbH | A-4710 Grieskirchen, Industriestraße 12 | www.froeling.com

Version of 27 Oct 2011
Page 1 of 7
SUPPLEMENTARY INSTALLATION INSTRUCTIONS FOR THE UK MARKET
TO BE READ IN CONJUNCTION WITH THOSE IN THE MAIN INSTRUCTION MANUAL
These instructions together with those in the instruction manual cover the basic principles
to ensure the satisfactory installation of the boiler, although detail may need slight
modification to suit particular local site conditions.
In all cases the installation must comply with current Building Regulations, Local Authority
Byelaws and other specifications or regulations as they affect the installation of the boiler.
It should be noted that the Building Regulations requirements may be met by adopting the
relevant recommendations given in British Standards BS 8303, BS EN15287-1:2007 as an
alternative means to achieve an equivalent level of performance to that obtained following
the guidance given in Approved Document J.
Please note that it is a legal requirement under England and Wales Building Regulations
that the installation of the boiler is either carried out under Local Authority Building Control
approval or is installed by a Competent Person registered with a Government approved
Competent Persons Scheme. HETAS Ltd operate such a Scheme and a listing of their
Registered Competent Persons can be found on their website at www.hetas.co.uk.
CO Alarms:-
Building regulations require that when ever a new or replacement fixed solid fuel or
wood/biomass appliance is installed in a dwelling a carbon monoxide alarm must be fitted
in the same room as the appliance. Further guidance on the installation of the carbon
monoxide alarm is available in BS EN 50292:2002 and from the alarm manufacturer’s
instructions. Provision of an alarm must not be considered a substitute for either installing
the appliance correctly or ensuring regular servicing and maintenance of the appliance and
chimney system.
HEALTH AND SAFETY PRECAUTIONS
Special care must be taken when installing the boiler such that the requirements of the Health and Safety at
Work Act are met.
Handling
Adequate facilities must be available for loading, unloading and site handling.
Fire Cement
Some types of fire cement are caustic and should not be allowed to come into contact with the skin. In case
of contact wash immediately with plenty of water.
Asbestos
This boiler contains no asbestos. If there is a possibility of disturbing any asbestos in the course of installation
then please seek specialist guidance and use appropriate protective equipment.
Metal Parts
When installing or servicing this boiler care should be taken to avoid the possibility of personal injury.

Version of 27 Oct 2011
Page 2 of 7
BOILER PERFORMANCE
The nominal heat outputs for the various boilers are detailed in the main instruction manual:
PREPARATORY WORK AND SAFETY CHECKS
IMPORTANT WARNING
This boiler must not be installed into a chimney that serves any other heating appliance.
There must not be an extractor fan fitted in the same room as the boiler as this can cause the boiler to emit
fumes into the room.
Chimney
In order for the boiler to perform satisfactorily the chimney height must be sufficient to ensure an adequate
draught of approximately 15 Pa so as to clear the products of combustion and prevent smoke problems into
the room.
NOTE: A chimney height of not less than 4.5 metres measured vertically from the outlet of the boiler to the top
of the chimney should be satisfactory. Alternatively the calculation procedure given in BS EN 13384-1 may be
used as the basis for deciding whether a particular chimney design will provide sufficient draught.
The outlet from the chimney should be above the roof of the building in accordance with the provisions of
Building Regulations Approved Document J.
Because these boilers run at high efficiencies the temperature of the flue gases is lower than conventional
solid fuel appliances. Although they are not classed as condensing appliances, the low flue gas temperature
results in condensation occurring within the flue. Any chimney flue system must therefore be able to withstand
the effects of condensate and operate under wet conditions (designation letter W). In addition it should be
soot fire resistant and able to withstand the corrosive effects of flue products generated by solid fuels
(designation G and 3 respectively). If installation is into an existing masonry chimney then it will require re-
lining with a liner meeting the specification described above. Existing concrete or clay lined chimneys are not
suitable for these boilers and must be lined as described above. All installations must be in accordance with
Building Regulations Approved Document J.
Any existing chimney must be clear of obstruction and have been swept clean immediately before installation
of the lining system.
If there is no existing chimney then any new system must be to the designation described above and in
accordance with Building Regulations Approved Document J.
A single wall metal fluepipe is suitable for connecting the boiler to the chimney but is not suitable for use as
the complete chimney. The chimney and connecting fluepipe must not be less than the size of the outlet
socket of the boiler. The length of this connecting pipe should be kept to a minimum. Refer also to the main
instruction manual for further guidance.
Any bend in the chimney or connecting fluepipe should not exceed 45 . 90 bends should not be used,
except for connecting to a rear outlet appliance, and the connection should be no more than 150 mm in length
and have a debris trap.
Combustible material should not be located where the heat dissipating through the walls of fireplaces or flues
could ignite it. Therefore when installing the boiler in the presence of combustible materials due account must
be taken of the guidance on the separation of combustible material given in Building Regulations Approved
Document J and also in these boiler instructions.
If it is found that there is excessive draught in the chimney then a draught stabiliser should be fitted in the
chimney above the chimney above the flue pipe connection. Fitting of a draught stabiliser will affect the
requirement for the permanent air supply into the room in which the boiler is fitted in accordance with

Version of 27 Oct 2011
Page 3 of 7
Approved Document J (see also combustion air supply).
Adequate provision e.g. easily accessible soot door or doors must be provided for sweeping the chimney and
connecting fluepipe.
Connection to the chimney
All the boilers have a flue gas connector that allows connection to the main chimney using a suitable
connecting pipe. All joints must be sealed in accordance with the recommendations in Approved Document J.
See also “Chimney” above.
Hearth
The hearth should be able to accommodate the weight of the boiler and its chimney if the chimney is not
independently supported. The weight of the boiler is indicated in the instruction manual.
The boiler should always be installed on a non-combustible hearth of a size and construction that is in
accordance with the provisions of the current Building Regulations Approved Document J.
The clearance distances to combustible material beneath, surrounding or upon the hearth and walls adjacent
to the hearth should comply with the guidance on the separation of combustible material given in Building
Regulations Approved Document J and also in these boiler instructions.
Combustion air supply
In order for the boiler to perform efficiently and safely there should be an adequate air supply into the room in
which the boiler is installed to provide combustion air. This is particularly necessary if the room is double-
glazed or a flue draught stabiliser is operating in the same room as the appliance. The provision of air supply
to the boiler must be in accordance with current Building Regulations Approved Document J. An opening
window is not appropriate for this purpose.
Connection to the central heating system
Ensure the heating system is the correct design for the boiler. It is an essential requirement that the system
incorporates a heat storage buffer tank (often referred to as an accumulator). Full guidance is given in the
main installation manual. Depending on the intended design of the heating installation and also on the output
of the boiler, the central heating system must be in accordance, as appropriate, with either BS 6880:1988
Parts 1 to 3, Code of Practice for low temperature hot water heating systems of output greater than 45kW.
Further guidance is available from the following sources: BS EN 14336:2004: Heating Systems in Buildings.
Installation and commissioning of water based heating systems. BS EN 12828: 2003; Heating Systems in
Buildings. Design of water based heating systems. BS EN 12831: 2003; Heating Systems in Buildings.
Method for calculation of the design heat load.
Particular attention must be paid to the installation and correct functioning of any Thermal Safety Device
where necessary. This is described fully in the installation manual.

Version of 27 Oct 2011
Page 4 of 7
Electrical connections
The installation of any electrical services during the installation of this boiler and the associated heating
system must be carried out by a registered competent electrician and in accordance with the requirements of
the latest issue of BS 7671.
Commissioning and handover
Before commissioning this boiler be sure to read and follow the operation manuals to ensure that everything is
carried out in accordance with the correct procedures.
Ensure any loose parts are fitted in accordance with the instructions.
Once the boiler is under fire check all seals for soundness and that the boiler and water system are operating
correctly. Ensure that the flue is functioning correctly and that all products of combustion are vented safely to
atmosphere via the chimney terminal.
On completion of the installation and commissioning ensure that the instruction manuals for the boiler are left
with the customer. Ensure to advise the customer on the correct use of the appliance with the fuels likely to be
used on the boiler and warn them to use only the recommended fuels for the boiler. The user should be given
a demonstration of the required routine maintenance and safety checks. Remind the user of the importance of
regular chimney sweeping and servicing by qualified persons to ensure continued safe operation of the boiler.
Leave the boiler operational and inform the user that this is the case.
Advise the user what to do should smoke or fumes be emitted from the boiler. The customer should be
warned about the dangers to children, aged and/or infirm persons and that access to the boiler should be
protected by a lockable door.

Contents
1 General 4
2 Safety 5
2.1 Hazard levels of warnings 5
2.2 Qualification of assembly staff 6
2.3 Protective equipment for assembly staff 6
2.4 Design Information 7
2.4.1 Notes on standards 7
General standards for heating systems 7
Standards for structural and safety devices 7
Standards for heating water 7
Standards for permitted fuels 8
2.4.2 Installation and approval of the heating system 8
2.4.3 General information for installation room (boiler room) 8
2.4.4 Requirements for central heating water 9
2.4.5 Notes for using pressure maintenance systems 9
2.4.6 Use with storage tank 10
2.4.7 Chimney connection/chimney system 10
Draught limiter 10
Boiler data for planning the flue gas system 11
2.4.8 Room air-independent operation 11
3 Technology 13
3.1 Dimensions - P1 Pellet 13
3.2 Dimensions - P1 Pellet with hydraulic and boiler block 14
3.3 Components and connections 15
3.4 Dimensions and connections - external suction module 16
3.5 Technical specifications 17
4 Assembly 19
4.1 Transport 19
4.2 Positioning 19
4.3 Temporary storage 19
4.4 Setting up in the boiler room 20
4.4.1 Remove pellet boiler from pallet 20
4.4.2 Moving the boiler in the boiler room 20
4.4.3 Minimum distances in the boiler room 20
4.5 Installing the boiler 22
4.5.1 Aligning the boiler on the floor 22
4.5.2 Adding a boiler block 23
4.5.3 Adding a hydraulic block 26
4.6 Installing the discharge system 29
4.6.1 Installing the external suction module 29
4.6.2 Connecting suction hoses to the boiler 29
4.7 Electrical Connection 30
4.7.1 Information on circulating pumps 30
Contents
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4.7.2 Universal suction system 31
5 Start-up 32
5.1 Before commissioning / configuring the boiler 32
5.2 Initial startup 33
5.2.1 Permitted fuels 33
Wood pellets 33
5.2.2 Non-permitted fuels 33
6 Decommissioning 34
6.1 Mothballing 34
6.2 Disassembly 34
6.3 Disposal 34
7 Appendix 35
7.1 Addresses 35
7.1.1 Address of manufacturer 35
7.1.2 Address of the installer 35
Contents
Installation Instructions P1 Pellet | M1440213_en 3

1 General
Thank you for choosing a quality product from Froling. The product features a state-of-
the-art design and conforms to all currently applicable standards and testing guide‐
lines.
Please read and observe the documentation provided and always keep it close to the
system for reference. It contains important safety information and all the operation and
maintenance specifications needed to operate the system safely, properly, environ‐
mentally friendly and cost-effectively.
The constant further development of our products means that there may be minor dif‐
ferences from the pictures and content. If you discover any errors, please let us know:
[email protected]
Subject to technical change.
The EC Declaration of Conformity is only valid in conjunction with a delivery certificate,
which has been filled in correctly and signed as part of the commissioning process.
The original document remains at the installation site. Commissioning installers or
heating engineers are requested to return a copy of the delivery certificate together
with the guarantee card to Froling. On commissioning by FROLING Customer Service
the validity of the delivery certificate will be noted on the customer service record.
Issuing a delivery cer‐
tificate
1General
4 Froling GesmbH | A-4710 Grieskirchen, Industriestraße 12 | www.froeling.com

2 Safety
2.1 Hazard levels of warnings
This documentation uses warnings with the following hazard levels to indicate direct
hazards and important safety instructions:
DANGER
The dangerous situation is imminent and if measures are not observed it will lead
to serious injury or death. You must follow the instructions!
WARNING
The dangerous situation may occur and if measures are not observed it will lead
to serious injury or death. Work with extreme care.
CAUTION
The dangerous situation may occur and if measures are not observed it will lead
to minor injuries or damage to property.
Safety 2
Hazard levels of warnings
Installation Instructions P1 Pellet | M1440213_en 5

2.2 Qualification of assembly staff
CAUTION
Assembly and installation by untrained personnel:
Risk of personal injury and damage to property.
During assembly and installation:
❒ Observe the instructions and information in the manuals
❒ Only allow trained staff to carry out assembly and installation
Assembly, installation, initial startup and servicing must always be carried out by quali‐
fied personnel:
- Heating technician / building technician
- Electrical installation technician
- Froling customer services
The assembly staff must have read and understood the instructions in the documenta‐
tion.
2.3 Protective equipment for assembly staff
You must ensure that staff have the protective equipment specified by accident pre‐
vention regulations.
▪ For transportation, setup and assembly:
- suitable workwear
- protective gloves
- sturdy shoes
2Safety
Qualification of assembly staff
6 Froling GesmbH | A-4710 Grieskirchen, Industriestraße 12 | www.froeling.com

2.4 Design Information
2.4.1 Notes on standards
The system must be installed and commissioned in accordance with the local fire and
building regulations. The following standards and regulations should always be ob‐
served:
General standards for heating systems
EN 303-5 Boilers for solid fuels, manually and automatically fed combus‐
tion systems, nominal output up to 300 kW
EN 12828 Heating systems in buildings - Design of water-based heating
systems
EN 13384-1 Chimneys - Thermal and fluid dynamic calculation methods
Part 1: Chimneys serving one appliance
ÖNORM M 7510-1 Guidelines for checking central heating systems
Part 1: General requirements and one-off inspections
ÖNORM M 7510-4 Guidelines for checking central heating systems
Part 4: Simple check for heating plants for solid fuels
Standards for structural and safety devices
ÖNORM H 5170 Heating installation - Requirements for construction and safety
engineering, as well as fire prevention and environmental pro‐
tection
ÖNORM M 7137 Compressed untreated wood – Requirements for storing pellets
at the end customer’s site
TRVB H 118 Technical directives for fire protection/prevention (Austria)
Standards for heating water
ÖNORM H 5195-1 Prevention of damage by corrosion and scale formation in
closed warm water heating systems at operating temperatures
up to 100 °C (Austria).
VDI 2035 Sheet 1 Prevention of damage in water heating systems - Scale forma‐
tion in domestic water heating systems and hot water heating
systems (Germany)
SWKI 97-1 Water quality for heating, steam, cooling and air conditioning
systems (Switzerland)
D.P.R. no. 412 Regulations for the planning, installation, running/operation and
maintenance of heating systems in buildings to reduce energy
consumption with reference to Article 4, Comma 4 of the Legis‐
lative Decree of 9 January 1991, No. 10 (Italy)
Safety 2
Design Information
Installation Instructions P1 Pellet | M1440213_en 7

Standards for permitted fuels
EN 14961-2 Solid biofuel, fuel specifications and classes.
Part 2: Wood pellets for non-industrial use
1. BImSchV First Ordinance of the German Federal Government for imple‐
mentation of the Federal Emission Protection Law, BGBl. I P.
491, in the applicable version.
2.4.2 Installation and approval of the heating system
The boiler should be operated in a closed heating system. The following standards
govern the installation:
ÖNORM / DIN EN 12828 Heating Systems in Buildings
NOTICE! Each heating system must be officially approved.
The appropriate supervisory authority (inspection agency) must always be informed
when installing or modifying a heating system, and authorisation must be obtained
from the building authorities:
Austria: Inform the civic/municipal building authorities.
Germany: Notify an approved chimney sweep and the building authorities.
2.4.3 General information for installation room (boiler room)
Boiler room characteristics
▪ 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 provide sufficient light‐
ing in the boiler room in accordance with national workplace design regulations.
▪ When using the boiler over 2000 metres above sea level you should consult the
manufacturer.
▪ Danger of fire due to flammable materials.
No flammable materials should be stored near the boiler. Flammable objects (e.g.
clothing) must not be put on the boiler to dry.
▪ Damage due to impurities in combustion air.
Do not use any solvents or cleaning agents containing chlorine in the room where
the boiler is installed.
▪ Keep the air suction opening of the boiler free from dust.
Ventilation of the boiler room
Ventilation air for the boiler room should be taken from and expelled directly outside,
and the openings and air ducts should be designed to prevent weather conditions (foli‐
age, snowdrifts, etc.) from obstructing the air flow.
Unless otherwise specified in the applicable building regulations for the boiler room,
the following standards apply to the design and dimensions of the air ducts:
Note on standards
2Safety
Design Information
8 Froling GesmbH | A-4710 Grieskirchen, Industriestraße 12 | www.froeling.com

ÖNORM H 5170 - Construction and fire protection requirements
TRVB H118 - Technical directives on fire protection/prevention
2.4.4 Requirements for central heating water
The following standards and guidelines apply:
Austria:
Germany:
Switzerland:
Italy:
ÖNORM H 5195-1
VDI 2035
SWKI 97-1
D.P.R. no. 412
NOTICE! Note on filling with make-up water: Always bleed the filling hose before con‐
necting, in order to prevent air from entering the system.
Observe the standards and also follow the recommendations below:
❒Max. cumulative value for alkaline earth: 1.0 mmol/l or 100 mg/l (corresponds to
5.6 dH)
❒ Use softened water as the make-up water
❒ Avoid leaks and use a closed heating system to maintain water quality during op‐
eration
2.4.5 Notes for using pressure maintenance systems
Pressure maintenance systems in hot-water heating systems keep the required pres‐
sure within predefined limits and balance out volume variations caused by changes in
the hot-water temperature. Two main systems are used:
Compressor-controlled pressure maintenance
In compressor-controlled pressure maintenance units, a variable air cushion in the ex‐
pansion tank is responsible for volume compensation and pressure maintenance. If
the pressure is too low, the compressor pumps air into the tank. If the pressure is too
high, air is released by means of a solenoid valve. The systems are built solely with
closed-diaphragm expansion tanks to prevent the damaging introduction of oxygen in‐
to the domestic hot water.
Pump-controlled pressure maintenance
A pump-controlled pressure maintenance unit essentially consists of a pressure-main‐
tenance pump, relief valve and an unpressurised receiving tank. The valve releases
hot water into the receiving tank if the pressure is too high. If the pressure drops below
a preset value, the pump draws water from the receiving tank and feeds it back into
the heating system. Pump-controlled pressure maintenance systems with open expan‐
sion tanks (e.g. without a diaphragm) introduce ambient oxygen via the surface of the
water, exposing the connected system components to the risk of corrosion. These
systems offer no oxygen removal for the purposes of corrosion control as required by
VDI 2035 and in the interests of corrosion protection should not be used.
Note on standards
Note on standards
Safety 2
Design Information
Installation Instructions P1 Pellet | M1440213_en 9

2.4.6 Use with storage tank
NOTICE
In principle it is not necessary to use a storage tank for the system to run smooth‐
ly. However, we recommend that you use the system with a storage tank, as this
ensures a continuous supply of fuel in the ideal output range of the boiler.
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.
⇨ See "Addresses" [page 35]
2.4.7 Chimney connection/chimney system
EN 303-5 specifies that the entire flue gas system must be designed to prevent, wher‐
ever possible, damage caused by seepage, insufficient feed pressure and condensa‐
tion. Please note in this respect that flue gas temperatures lower than 160K above
room temperature can occur in the permitted operating range of the boiler.
The flue gas temperatures (for clean systems) and additional flue gas values can be
found in the table below.
The connection between the boiler and the chimney system should be as short as
possible. The upward angle of the connection should not exceed 30 - 45°. Insulate the
connection. The entire flue gas system - chimney and connection - should be calcula‐
ted in accordance with EN 13384-1.
Local regulations and other statutory regulations also apply.
NOTICE! The chimney must be authorised by a smoke trap sweeper or chimney
sweep.
NOTICE! TRVB H 118 (Austria only) stipulates that an explosion flap must be installed
in the connecting piece (flue pipe) directly next to the boiler. It should be situated in
such a way that is poses no risk to persons!
Draught limiter
The installation of a draught limiter is recommended.
NOTICE! Install the draught limiter directly under the mouth of the flue line, as the
pressure is constantly low at this point.
2Safety
Design Information
10 Froling GesmbH | A-4710 Grieskirchen, Industriestraße 12 | www.froeling.com

Boiler data for planning the flue gas system
Description P1 Pellet
7 10 15 20
Flue gas temperature at nominal load °C 140 150 150 150
Flue gas mass flow at nominal load kg/h 17 25 36 52
Flue gas mass flow at partial load 7 7 16 20
Flue gas mass flow at nominal load kg/s 0.005 0.007 0.010 0.014
Flue gas mass flow at partial load 0.002 0.002 0.004 0.005
Required feed pressure at nominal load Pa 5
Required feed pressure at partial load 2
Required feed pressure at nominal load mbar 0.05
Required feed pressure at partial load 0.02
Maximum permissible feed pressure In accordance with ÖNORM/DIN EN 303-5
Flue spigot diameter mm 100 130
2.4.8 Room air-independent operation
The P1 Pellet has a central air connection on the back of the boiler. If appropriate sup‐
ply air and flue gas connections are installed, the boiler can be operated independent‐
ly of room air as a type C42 or type C82 in the sense of EN 15035.
Definition of type C8 as per EN 15035
Boiler that is connected via its combustion air supply and flue gas outlet, with a con‐
necting piece that may be supplied, to a shared chimney with a shaft for combustion
air supply and a shaft for flue gas outlet. The mouths of the air and flue gas chimney
are either concentric or so close to each other that similar wind conditions apply.
NOTICE! Air is supplied by an air and flue gas system!
Definition of type C8 as per EN 15035
A boiler that is connected via its combustion air supply and flue gas outlet, with a con‐
necting piece, to a wind protection device and a single or shared chimney.
NOTICE! Air supply via an air supply line that is independent from the chimney sys‐
tem!
NOTICE! This design requires a wind protection device. If a protective grating is fitted,
you must ensure that the mesh size is sufficiently large to prevent a significant loss of
pressure and/or seal from dirt!
The second index "2" (C42 / C82) indicates type C boilers with a blower fan downstream
of the combustion chamber or the heat exchanger.
When dimensioning pipe bends in the supply air line you should note that:
Safety 2
Design Information
Installation Instructions P1 Pellet | M1440213_en 11

The ratio of the radius of curvature (r) to pipe diameter (d) should be greater than 1
r:d ≥ 1
For example:
- Diameter of supply air connection = 60 mm
- Minimum radius of pipe bends 60 mm
Install the supply air line in as straight a line as possible and over the shortest path.
Keep the number of pipe bends to a minimum (ideally a maximum of 4 bends)!
In addition, the following applies: The maximum resistance of the supply air line is 20
Pa!
You can find the necessary dimensions of the supply air connections in the boiler in
the technical data sheets.
Minimum specification of connection lines
Connecting piece for the combustion air supply as per EN 1856-2
EN 1856-2 - T080 - N2 - D
Connecting piece for the flue gas outlet as per EN 1856-2
EN 1856-2 - T200 - P1 - W
TXXX Temperature class (specified in °C)
N2 Pressure class with test pressure = 20 Pa
P1 Pressure class with test pressure = 200 Pa
DCondensation resistance not required (dry)
WCondensation resistance required (damp)
2Safety
Design Information
12 Froling GesmbH | A-4710 Grieskirchen, Industriestraße 12 | www.froeling.com

3 Technology
3.1 Dimensions - P1 Pellet
Dimen‐
sion
Description Unit P1 Pellet
7 - 10 15 - 20
LLength, boiler mm 650 650
L1 Total length incl. flue gas pipe connection 680 685
BWidth, boiler 600 750
HHeight, boiler 1200 1200
H1 Height, flue gas pipe connection 960 940
H2 Height, ventilation connection 940 935
H3 Height, return connection 870 870
H4 Height, flow connection 250 290
H5 Height, drainage connection 240 100
H6 Height, supply air connection
(for room air-independent operation)
370 360
H7 Height, suction system connection 1110 1110
Technology 3
Dimensions - P1 Pellet
Installation Instructions P1 Pellet | M1440213_en 13

3.2 Dimensions - P1 Pellet with hydraulic and boiler block
Dimen‐
sion
Description Unit P1 Pellet
7 - 10 15 - 20
L1 Length, boiler block mm 1150 1150
L2 Length, hydraulic block 500 500
BWidth of boiler with hydraulic block 660 660
HOverall height of boiler with DHW block 1810 1810
H1 Height, boiler block 630 630
H2 Height, boiler block and hydraulic block 1330 1330
H3 Height of flow/return connection of the heating
circuits
1260 1260
H4 Height of flow/return connection of the boiler 710 710
H5 Height of the drainage connection of the boiler 690 690
H6 Height of the hot water/circulation connection
of the boiler block
350 350
H7 Height of the cold water supply of the boiler
block
160 160
H8 Height, electronic heating cartridge connection 185 185
H9 Height, drainage connection of boiler block 165 165
H10 Height, flue gas pipe connection 1570 1550
H11 Height, supply air connection (for room air-in‐
dependent operation)
980 970
H12 Height, suction system connection 1720 1720
3Technology
Dimensions - P1 Pellet with hydraulic and boiler block
14 Froling GesmbH | A-4710 Grieskirchen, Industriestraße 12 | www.froeling.com

3.3 Components and connections
No. Description Unit P1 Pellet
1Boiler flow connection Inches 3/4 IT
2Boiler return connection 3/4 IT
3Drainage connection
(with optional hydraulic unit designed as a boiler filling and
drainage system)
1/2 IT
4Air vent connection 1/2 IT
5Supply air connection (external diameter) mm 60
6Pellet suction line connection 50
7Return-air line connection 50
8Flue gas pipe connection 100
9Flow and return connection for heating circuit 1
(heating circuit group with high efficiency pump and mixing
valve)
inches 1 ET
10 Flow and return connection for additional heating circuit
group
IG 1
11 Line regulating valve
12 Safety group with
- pressure gauge for system pressure
- quick vent valve
- safety valve
13 Expansion tank (18 litres) integrated into hydraulic block
14 Connection, cold water supply of the tank unit Inches 3/4 ET
15 Connection, hot water for the tank unit 3/4 ET
16 Connection, circulation line 3/4 ET
17 Connection, tank unit drainage 1/2 IT
18 Connection for E-cartridge 6/4 IT
Technology 3
Components and connections
Installation Instructions P1 Pellet | M1440213_en 15

No. Description Unit P1 Pellet
19 Maintenance flange with insulated magnesium protective anode
Not
pic‐
tured
DHW loading pump (Wilo Yonos Para) integrated into hydraulic block
3.4 Dimensions and connections - external suction module
Dimen‐
sion
Name Unit Suction module
DSuction turbine diameter mm 240
LTotal length incl. wall bracket 265
H1 Suction turbine height 245
H2 Total height incl. wall bracket 325
1Return-air line connection (line to suction point) mm 50
2Return-air line connection (line to boiler) 50
3Technology
Dimensions and connections - external suction module
16 Froling GesmbH | A-4710 Grieskirchen, Industriestraße 12 | www.froeling.com