Riello GITRE B/100 LN Manual

cod. 20123982 rev. 1 10/2016
GITRÈ LN GITRÈ B/100 LN
GITRÈ LN
EN INSTALLATION AND MAINTENANCE MANUAL

2
Dear heating engineer,
Congratulations on having chosen a Rboiler. You have se-
lected a modern, quality product that is designed to give de-
pendable, efcient and safe service and to provide comfort in
the home for many years to come.
This manual provides information that is essential to the in-
stallation of the appliance. Used in conjunction with your own
knowledge and expertise it will enable you to install the appli-
ance quickly, easily, and correctly.
Please accept our thanks and our congratulations on your choice
of product.
Riello S.p.A.
CONFORMITY
GITRÈ LN boilers conform to the following directives:
−Directive 92/42/EEC on efciency requirements
−Electromagnetic Compatibility Directive 2014/30/EU
−Low Voltage Directive 2014/35/EU
−Ecodesign Directive 2009/125/CE for energy-related prod-
ucts
−Energy Labelling Directive 2010/30/EU
−Delegated Regulation (EU) N. 811/2013
−Delegated Regulation (EU) N. 813/2013
−Delegated Regulation (EU) N. 814/2013
9 This product must only be used for the purpose for which it
is designed and made, as specied by R. Rdeclines
all responsibility, contractual or other, for damage to prop-
erty or injury to persons or animals caused by improper in-
stallation, adjustment, maintenance or use.
ENGLISH
RANGE
MODEL CODE
GITRÈ 4 LN 20123950
GITRÈ 5 LN 20123952
GITRÈ 6 LN 20123953
GITRÈ 5 B/100 LN 20123954
ACCESSORIES
For a complete list of accessories and details of their compatibil-
ity, refer to the Catalogue.

3
This manual, Code 20123982 - Rev. 1 (10/2016)
comprises 48 pages.
CONTENTS
The following symbols are used in this manual:
9 CAUTION! = Identies actions that require caution and
adequate preparation.
0 STOP! = Identies actions that you MUST NOT do.
This manual, Code
- Rev.
comprises
pages.
1 GENERAL INFORMATION ............................4
1.1 General Safety Information ......................4
1.2 Precautions..................................4
1.3 Description of the appliance .....................5
1.4 Safety and control devices.......................5
1.5 Identication ................................6
1.6 System layout ................................6
1.7 Technical specications.........................9
1.7.1 Water-side pressure drop ...................... 10
1.8 Location of sensors ............................11
1.9 Control panel ............................... 12
2 INSTALLATION .....................................14
2.1 Unpacking the product ........................ 14
2.1.1 Positioning of labels .......................... 14
2.2 Overall dimensions and weights ................. 14
2.3 Moving and removing the packing ............... 15
2.4 Installation premises ......................... 16
2.4.1 Recommended minimum distances .............. 16
2.5 Installation in older systems and systems requiring
modernisation .............................. 16
2.6 Water connections ............................17
2.7 Typical water system schematics ................. 18
2.8 Fuel connections............................. 19
2.9 Hoses should also be xed to the oor and suitably
protected whenever possible ...................20
2.9.1 Technical specications of stack .................20
2.9.2 Connection to the stack .......................20
2.10 System lling and emptying .................... 22
2.10.1 Water quality requirements..................... 22
2.10.2 Filling ..................................... 22
2.10.3 Emptying ..................................23
2.11 Wiring diagram ..............................24
2.12 Electrical connections .........................26
3 COMMISSIONING AND MAINTENANCE...............28
3.1 Preparing for initial startup .....................28
3.2 Initial startup ...............................28
3.2.1 Ignition failure ..............................29
3.2.2 Resetting the burner and safety thermostat ........30
3.3 Checks during and after initial start-up ...........30
3.3.1 Storage cylinder pump control .................. 31
3.3.2 Burner control and adjustment.................. 32
3.3.3 Burner functioning and programming ............33
3.4 Temporary shutdown .........................40
3.5 Preparing for extended periods of disuse ..........40
3.6 Cleaning and servicing the boiler ................ 41
3.7 Annual cleaning ............................. 41
3.7.1 Cleaning and servicing the boiler ................ 41
3.7.2 Cleaning the heat exchanger....................43
3.7.3 Checking and replacing the storage cylinder anode
(GITRÈ 5 B/100 LN model).......................44
3.8 Extraordinary cleaning ........................45
3.8.1 Cleaning the storage cylinder ...................45
3.9 External cleaning ............................45
3.10 Troubleshooting .............................46
4 RECYCLING AND DISPOSAL ........................47

4
GENERAL INFORMATION
1 GENERAL INFORMATION
1.1 General Safety Information
9 Check that the product is complete, undamaged and as or-
dered as soon as you receive it. Report any discrepancies or
damage to the Rdealer who sold it.
9 This product must be installed by a legally qualied heat-
ing engineer. On completion of the installation, the install-
er must issue the owner with a declaration of conformity
conrming that the installation has been completed to the
highest standards in compliance with the instructions pro-
vided by Rin this instruction manual, and that it con-
forms to all applicable laws and standards.
9 This product must only be used for the purpose for which it
is designed and made, as specied by R. Rdeclines
all responsibility, contractual or other, for damage to prop-
erty or injury to persons or animals caused by improper in-
stallation, adjustment, maintenance or use.
9 The room where the boiler is installed must be proper-
ly ventilated to ensure a sufcient supply of air for correct
combustion.
9 If you notice any water leaks, disconnect the boiler from the
mains electricity supply and shut off the water supply.
9 The boiler must be serviced at least once a year.
9 Periodically check that pressure in the central heating cir-
cuit, when cold, is approximately 1.5 bar and below the
maximum limit specied for the boiler.
9 If the boiler is not going to be used for an extended peri-
od of time, perform the operations described later in this
manual.
9 This manual is an integral part of the equipment and there-
fore must be stored carefully and must ALWAYS accompany
the boiler even if it is sold to another Owner or User or trans-
ferred to another plant. If it is damaged or lost, request an-
other copy from your local Technical Assistance Service R.
1.2 Precautions
The operation of any appliance that uses fuel, electrical power
and water demands that a number of fundamental safety pre-
cautions be respected:
0 Do not allow children or inrm persons to operate the sys-
tem unsupervised.
0 It is forbidden to use electrical devices or equipment, such
as switches, appliances, etc. if there is a smell of gas or un-
burnt products. If so:
−Ventilate the room, opening doors and windows
−Close the fuel shut-off cock.
0 Do not touch the boiler while barefoot or wet.
0 Never clean or service the boiler without rst disconnect-
ing it from the mains electricity supply by turning the mains
power switch and the control panel switch OFF.
0 Do not tamper with or adjust the safety or control devices
without prior authorisation and instructions from the man-
ufacturer.
0 Never pull, disconnect, or twist the electrical cables coming
from the appliance even if it is disconnected from the mains
electricity supply.
0 Do not obstruct or restrict the vents in the room where the
boiler is installed. Adequate ventilation is essential for cor-
rect combustion.
0 Do not expose the boiler to the elements. It is not designed
for use outdoors.
0 It is prohibited to leave inammable substances and con-
tainers in the room where the boiler is installed.
0 Do not dispose of packaging material into the environment,
or leave it within the reach of children, since it can become
a potential hazard. Dispose of packaging material in com-
pliance with applicable legislation.
0 It is forbidden to operate the boiler without water.

5
GENERAL INFORMATION
1.3 Description of the appliance
The GITRÈ LN boiler is an oil fuelled hot water boiler capable
of low temperature functioning. GITRÈ LN versions are designed
only for central heating applications. The GITRÈ B/100 LN version
is equipped with a 100 litre vitried storage cylinder and can
be used for central heating and domestic hot water production.
The cast iron boiler body features a triple ue pass design and a
horizontal combustion chamber.
The front cover opens fully to facilitate the inspection, mainte-
nance and cleaning of internal parts and to minimise service
time.
The boiler body is covered in high density glass wool insulation
to reduce heat loss.
The boiler is tted with a single stage, low NOx, fuel oil burner.
The GITRÈ LN boiler's control logic incorporates a total shutdown
function to minimise energy consumption:
−The GITRÈ LN (heating only) model only starts up if the
central heating system requests heat (i.e. when the room
thermostat switches the heating on);
−If the GITRÈ B/100 LN (heating and DHW) model is in
"Summer" mode ("Summer/Winter" selector turned to
Summer position), it only starts up to restore the setpoint
temperature of the water in the storage cylinder. If it is
in "Winter" mode ("Summer/Winter" selector turned to
Winter position), it starts up either in response to a re-
quest for heat from the heating system (i.e. when the
room thermostat switches the heating on) or to restore
the setpoint temperature of the water in the storage
cylinder (DHW heat requests are prioritised over central
heating requests)..
1.4 Safety and control devices
GITRÈ LN boilers incorporate the following safety and control de-
vices:
−A manual reset safety thermostat that forces a safe-
ty shutdown if boiler temperature exceeds the safety
threshold (110°C). The sensor used to monitor this tem-
perature is located on the body of the heat exchanger;
−A minimum temperature thermostat that enables the
central heating pump only if boiler temperature exceeds
the minimum permissible (50°C);
−An electronic burner controller that monitors the correct
functioning of the selected burner program and sends
a lockout signal to the control panel in the event of an
error.
ONLY FOR GITRÈ B/100 LN MODELS
−A maximum temperature thermostat that shuts down
the burner if boiler temperature reaches or exceeds the
default maximum limit ( 82°C) during the heating of do-
mestic hot water in the storage tank;
−A heat dissipation thermostat that starts up the storage
tank pump to dissipate excess heat in order to keep boil-
er temperature below the safety threshold (90°C).
9 The intervention of a safety device indicates a potentially
dangerous malfunction in the system. Contact the manu-
facturer’s Technical Assistance Service immediately.
9 Safety devices must only be replaced by the manufacturer's
Technical Assistance Service using original spare parts. Refer
to the spare parts catalogue supplied with the boiler.
0 Do not use the boiler if any of its safety devices are faulty.
Always check that the boiler is functioning correctly after repairs
have been made.

6
GENERAL INFORMATION
1.5 Identication
The products are identied by:
Serial number plate
This is located on the boiler body and species the serial
number, model, and main technical specications.
S
X
%
mg/kWh
NO
Pms= bar T = °C
Qn(min)=
Pn(min)=
T067793GE
Qn(max)=
Pn(max)=
Mod.
Cod.
N°
kW
kW
kW
kW kW
D= l/minkW
kW
kW
Pmw= bar T = °C
IP
WV~Hz
RIELLO S.p.A.
Via Ing.Pilade Riello 7
37045 Legnago (VR) - ITALY
TIPO/TYP/TYP/TYPE/TIPO/TIPO:
COMBUSTIBILE/COMBUSTIBLE/BRENNSTOFF/BRANDSTOF/FUEL/COMBUSTIBLE/COMBUSTÍVEL:
PAESE DI DESTINAZIONE/PAYS DE DESTINATION/BESTIMMUNGSLAND/LAND VON BESTEMMING
COUNTRY OF DESTINATION/PAÍS DE DESTINO/PAÍS DE DESTINO:
T067793GE
Mod.
Cod.
N°
Qn(max) kW
Pn(max) kW
bar
Pms
RIELLO S.p.A.
Via Ing.Pilade Riello 7
37045 Legnago (VR) - ITALY
Data plate
This lists the technical specications and performance of the
product.
DHW section
Central heating section
Qn Rated heat input
Pn Rated useful heat output
IP Electric degree of protection
Pmw Maximum operating pressure, DHW circuit
Pms Maximum operating pressure, CH circuit
TTemperature
η Efciency
D Specic ow rate
NOx NOx class
9 If these plates or any other means of clearly identifying the
product are defaced, removed or lost, proper installation
and servicing may be rendered difcult.
1.6 System layout
GITRÈ LN
7
1
8
3
2
6
1
2
4
5
3
9
1 Burner
2 Boiler body
3 Control panel
4 Sensor socket
5 Lifting holes
6 Flue gas exhaust tting
7 Casing
8 Drain cock
9 Flue gas diaphragm (GITRÈ 5 LN only)

7
GENERAL INFORMATION
GITRÈ B/100 LN
1
15
16
2
3
11
12
3
4
19
18
17
8
7
6
5
9
11
10
12
8
6
5
1
4
13
14
1 Control panel
2 Storage cylinder drain cock
3 CH circuit drain cock
4 Automatic vent valve
5 Storage cylinder
6 Casing
7 Non-return valve
8 Boiler circulator
9 Boiler temperature sensor socket
10 Lifting holes
11 Burner
12 Boiler body
13 Flue gas diaphragm
14 Flue gas exhaust tting
15 Domestic cold water inlet
16 DHW circulation
17 Storage cylinder temperature sensor socket
18 DHW outlet
19 Magnesium anode

8
GENERAL INFORMATION
BURNER
3
11
9
5
6
2
7
8
10
1
4
1 Pump
2 Burner controller
3 Reset button with lockout indicator
4 Flange with seal
5 Air damper adjuster screw
6 Air intake
7 Oil pump pressure adjuster screw
8 Pressure gauge tting
9 Photoresistor
10 Combustion head
11 Motor
OIL PUMP
7
6
5
4
3
2
1
8
1 Suction port
2 Return
3 By-pass screw
4 Pressure gauge tting
5 Pressure adjuster screw
6 Vacuum gauge tting
7 Valve
8 Auxiliary pressure measurement tting

9
GENERAL INFORMATION
1.7 Technical specications
DESCRIPTION
GITRÈ LN
GITRÈ 4
LN
GITRÈ 5
LN
GITRÈ 6
LN GITRÈ 5 B/100 LN
Device type
Low temperature central
heating
Mixed low tem-
perature heating
B23-C13-C33-C63(*)
Fuel Heating fuel oil (Light oil)
Maximum rated heat input at furnace referred to HVC (LCV) 26,5
(25)
33,9
(32)
42,4
(40)
33,9
(32) kW
Useful (rated) heat output 24 31 38 31 kW
Maximum useful heat output P4 (60-80°C) 23,8 30,7 38,5 30,7 kW
30% heat output P1
with
return at
37°C
7,1 9,2 11,5 9,2 kW
Seasonal energy efciency in central heating mode B
Seasonal energy efciency in DHW mode - B
Seasonal energy efciency in central heating
mode ηs 86 87 %
Efciency at rated heat output in high tempera-
ture mode referred to HCV η4 (60-80°C) 89,8 90,6 90,7 90,6 %
Efciency at 30% rated heat output in low tem-
perature mode referred to HCV η1
with
return at
37°C
91,9 91,6 91,7 91,6 %
Energy efciency in DHW mode ηWH -73,0 %
Storage cylinder charging prole -XL
Heat loss in standby mode Pstby 60,1 60,1 58,6 60,1 W
Combustion efciency referred to LCV 96,4 96,8 96,6 96,8 %
Annual energy consumption QHE 80 102 128 102 GJ
Daily electrical energy consumption Qelec --- 0,105 kWh
Annual electrical energy consumption AEC --- 28,60 kWh
Daily fuel consumption Qfuel --- 27,26 kWh
Annual fuel consumption AFC --- 36,50 GJ
Noise level (sound power) LWA 59 dB(A)
Emissions at maximum heat input
NOx (referred
to HCV) <110 mg/kWh
CO2 12,5 %
CO w.a.
<<50 ppm
Flue
gas T
At Pn (60-
80°C) 97 93 91 93 °C
Smoke scale <0,5
Flue gas mass ow rate 9,6 12,3 16,1 12,3 g/s
Maximum working pressure 3bar
Safety thermostat trip temperature 110 °C
Maximum operating temperature 55-82 °C
Minimum return temperature 37 °C
Boiler water capacity 19 24 28 24 l
Turbulators 6n°
Power supply 230-50 V-Hz
Electric degree of protection X0D IP
Consumption at full load Elmax 187 185 240 185 W
Consumption at part load Elmin 56,1 55,5 72,0 55,5 W
Electrical consumption in standby mode P sb 12 W
LCV: Lower caloric value of fuel
HCV: Higher caloric value of fuel
Test conditions:
−Room temperature 22°C
−Atmospheric pressure 1018 mbar
(*) In conjunction with the kit available from the catalogue.
(*) C63 forbidden in Belgium.

10
GENERAL INFORMATION
STORAGE CYLINDER GITRÈ 5 B/100 LN
Type of storage cylinder Vitried steel
Storage cylinder layout Vertical
Heat exchanger layout Vertical
Maximum power absorbed 24,9 kW
DHW water temperature setting range 0-70 °C
Storage cylinder capacity 100 l
Coil water capacity 5 l
Coil heat exchange surface area 1,02 m2
Domestic hot water production (∆T 35°C) (*) 612 l/h
Water draw in 10 minutes with primary buffer tank
at:
48°C 170 l
60°C 230 l
Specic ow rate (EN 13203) 21 l/min
Replenishment time with ∆T 35°C) 10 min
Maximum operating pressure of storage cylinder 6bar
STORAGE CYLINDER PUMP
Electrical consumption 53 W
EEI Part 3 (**) ≤0,20
P L, Avg (***) ≤24 W
Minimum pressure at pump suction inlet 0,5 bar
(*) Inlet water temperature 10°C and average outlet water temperature 45°C with coil inlet temperature of 80°C
(**) Energy efciency rating according to regulations 641/2009-622/2012
(***)Approximate average annual electricity consumption according to regulations 641/2009-622/2012
1.7.1 Water-side pressure drop
GITRÈ LN boilers come without a pump. A pump must therefore be provided as part of the installation.
In order to choose a pump of the right size, bear in mind the boiler’s water-side pressure drop, as shown in the gure below.
0
5
10
15
20
25
30
35
40
45
50
Flow-rate [m³/h]
0,0 0,2 0,4 0,6 0,8 1,0 1,2 1,4 1,6 1,8 2,0 2,2 2,4 2,6 2,8 3,0 3,2 3,4 3,6 3,8 4,0
Pressure drop [mbar]
GITRÈ 4 LN
GITRÈ 5 LN -
5B/100 LN
GITRÈ 6 LN

11
GENERAL INFORMATION
1.8 Location of sensors
GITRÈ LN
TS
Tm
TR
1
TS Safety thermostat sensor
Tm Minimum temperature thermostat
sensor
TR Boiler thermostat sensor
1 Boiler temperature gauge
GITRÈ B/100 LN
2
TB
TL1
TL2
Tm
TR
TS
1
TR Boiler thermostat sensor
TS Safety thermostat sensor
TB Storage cylinder thermostat sensor
TL1 Maximum temperature thermostat
sensor
TL2 Heat dissipation thermostat sensor
Tm Minimum temperature thermostat
sensor
1 Boiler temperature gauge
2 DHW thermostat

12
GENERAL INFORMATION
1.9 Control panel
GITRÈ LN
20
40
60
80
100
0120
1
2
3
4
5
6
7
1 Function selector
0 Off
IOn
II Remote burner reset
2 Boiler temperature gauge
Displays the temperature of the central heating water
3 Boiler thermostat
Allows you to set the temperature of the central heating water (setting range 55-82°C)
55
82
4 Electrical power indicator (green)
Lights to show that the boiler is receiving electrical power
5 Burner lockout indicator (red)
Lights to show that the burner locked out
6 Manual reset for safety thermostat
Allows you to reset the boiler if the safety thermostat trips. Unscrew the protective cover to access
the reset button
7 Protective cover over control panel

13
GENERAL INFORMATION
GITRÈ B/100 LN
20
40
60
80
100
0120
8
7
6
9
10
20
40
60
80
100
0120
1
2
3
4
5
1 Function selector
0 Off
IOn
II Remote burner reset
2 Boiler temperature gauge
Displays the temperature of the central heating water
3 Boiler thermostat
Allows you to set the temperature of the central heating water (setting range 55-82°C)
55
82
4 Electrical power indicator (green)
Lights to show that the boiler is receiving electrical power
5 Burner lockout indicator (red)
Lights to show that the burner locked out
6 Summer (I) / Winter (II) selector
7 Storage cylinder temperature gauge
Displays the temperature of the domestic hot water in the storage cylinder
8 Manual reset for safety thermostat
Allows you to reset the boiler if the safety thermostat trips. Unscrew the protective cover to access
the reset button
9 Storage cylinder thermostat
Allows you to set the temperature of the domestic hot water (setting range 0-70°C)
0
70
10 Protective cover over control panel

14
INSTALLATION
2 INSTALLATION
2.1 Unpacking the product
GITRÈ LN boilers are delivered on a pallet, packed and protected
by a wooden cage.
The following items are delivered in a plastic bag (1) inside the
boiler:
−User manual
−Installation and maintenance manual
−Spare parts catalogue
−Hydraulic test certicate
−Energy label
2.1.1 Positioning of labels
A
A Packing label
9 The instruction manual is an integral part of the boiler. Once
located, read it thoroughly and keep it safe.
9 Keep the documentation envelope in a safe place. Any re-
placement documents must be ordered from Riello S.p.A.
who reserve the right to charge for the cost of the replace-
ment.
2.2 Overall dimensions and weights
GITRÈ LN
P
H
L
1
GITRÈ B/100 LN
P
H
L
1
Description GITRÈ 4
LN
GITRÈ 5
LN
GITRÈ 6
LN
GITRÈ 5
B/100 LN
L450 450 450 600
mm
P797 897 1017 900 mm
H850 850 850 1500 mm
Net weight 182 214 250 286 kg

15
INSTALLATION
2.3 Moving and removing the packing
9 If the installation involves a lot of moving (e.g. to a rooftop
or cellar utility room) do not remove the protective wooden
cage until the boiler is at its place of installation.
9 Wear suitable personal protection equipment when moving
the boiler and removing the packing. Only use lifting equip-
ment that is suitable for the weight involved.
Proceed as follows to remove the packing:
−Remove the staples (A) xing the wooden cage (1) to the
pallet
A
1
−Lift off the wooden cage (1) or slide it off to the rear. (Pull
out the staples (B) and remove the front of the cage rst
in order to slide it off to the rear.)
B
1
−Remove the polystyrene edge protectors (2)
−Pull off the protective bag (3).
2
3
0 Do not dispose of packaging material into the environment,
or leave it within the reach of children, since it can become
a potential hazard. Dispose of packaging material in com-
pliance with applicable legislation.
With the packing removed, remove the front panel (1).
1
Locate the bag containing the documentation, remove the en-
ergy label and apply it to the boiler casing.
25 kW
30 mm
25 mm

16
INSTALLATION
To move the boiler manually, proceed as follows:
−Remove the xing screws (C) to free the boiler from the
pallet;
−Lift the boiler by inserting two 1" diameter pipes (2)
through the lifting holes (3) in the boiler body.
2
C
3
9 Take care because the boiler might swing when lifted.
Provided the oor is smooth and level, the boiler can be lifted a
little (1) and moved on wheels (2).
2
1
1
2
Level off the boiler by adjusting the 2 feet at the front of the
boiler.
2.4 Installation premises
GITRÈ LN boilers must be installed in rooms with suitably sized
air vents conforming to the technical standards and regulations
applicable at the place of installation.
9 When installing the boiler, allow sufcient space around it
to access all safety and control devices and to permit easy
maintenance.
9 Check that the appliance's electrical protection level is suit-
able for the place of installation.
9 Make sure that comburent air is not contaminated by sub-
stances containing chlorine or uorine (elements found in
sprays, paints, detergents etc.).
0 These boilers must be installed indoors. They are not de-
signed for outside use.
0 Do not obstruct or restrict the air vents in the room where
the boiler is installed. A free air supply is essential for correct
combustion.
2.4.1 Recommended minimum distances
This gure shows the minimum installation distances that must
be respected in order to allow proper maintenance of the boiler.
≥ 1 m
≥ 1 m
≥ 1 m
≥ 0,5 m ≥ 0,5 m
2.5 Installation in older systems and systems
requiring modernisation
When installing these boilers in older systems or systems requir-
ing modernisation, always perform the following checks:
−Make sure that the ue is able to withstand the tem-
perature of the combustion gases and that it has been
designed and made in compliance with applicable
standards. The ue must also be as straight as possible,
sealed, insulated and not blocked or choked. Refer to the
"Combustion gas exhaust" section on page20for further
information.
−Make sure that the electrical supply system has been in-
stalled by a qualied electrician in compliance with ap-
plicable standards
−Make sure that the fuel feed line and any storage tank
are made and installed in compliance with applicable
standards
−Make sure that expansion vessels are big enough to con-
tain the additional volume generated by thermal expan-
sion
−Make sure that the ow rate, head and direction of ow
of the pumps are suitable and correct
−Make sure that the central heating circuit has been
ushed out to remove all sludge and lime scale, and that
it has been bled and seal tested
−Make sure that a suitable water treatment system is in-
stalled if the quality of the supply/recirculation water so
demands. (Refer to the reference values on page22); See
Riello S.p.A.’s Catalogue
9 The manufacturer declines all responsibility for damage
caused by incorrectly constructed ue systems.

17
INSTALLATION
2.6 Water connections
The following gures and tables give the dimensions and po-
sitions of the water ttings for (GITRÈ LN and GITRÈ B/100 LN)
boilers.
Before installing the boiler, ush out all the pipes of the central
heating circuit to remove any machining residues.
GITRÈ LN
MI
RI
A
A
B
C
DESCRIPTION
GITRÈ LN
GITRÈ 4
LN
GITRÈ 5
LN
GITRÈ 6
LN
A96 mm
B103 mm
C555 mm
MI (CH ow) 1"1/4 F Ø
RI (CH return) 1"1/4 F Ø
GITRÈ B/100 LN
AA B
D
C
GE F
MI
US
ES
RC
RI
DESCRIPTION GITRÈ LN
GITRÈ 5 B/100 LN
A170 mm
B260 mm
C555 mm
D103 mm
E267,5 mm
F65 mm
G267,5 mm
MI (CH ow) 1"1/4 M Ø
RI (CH return) 1"1/4 M Ø
US (DHW outlet) 3/4” M Ø
RC (DHW recirculation) 3/4" F Ø
ES (domestic cold water inlet) 3/4” M Ø

18
INSTALLATION
2.7 Typical water system schematics
Typical schematic - Central heating system - GITRÈ LN
1 Boiler
2 Central heating system man-
ifolds
3 Disconnect valves
4 Pumps
5 Non-return valves
6 Automatic vent valve
7 Boiler safety valve
8 Boiler drain cock
9 System lling cock
10 Water softener lter
11 CH expansion vessel
8
1
DRAINDRAIN
CENTRAL
HEATING
RETURN
CENTRAL
HEATING
FLOW
39
11
10
6
3
3 3
3
4
5
3
2 2
7
3
Schematic diagram - central heating and domestic hot water production - GITRÈ B/100 LN
1 Boiler
2 Central heating system man-
ifolds
3 Disconnect valves
4 Pumps
5 Non-return valves
6 Automatic vent valve
7 Boiler safety valve
8 Boiler drain cock
9 Storage cylinder safety valve
10 System lling cock
11 CH expansion vessel
12 Storage cylinder
13 Storage cylinder drain cock
14 DHW expansion vessel
15 Water softener lter
16 Pressure reducer
17 DHW recirculation pump
8
13
INLET
12
DRAINDRAIN
CENTRAL
HEATING
RETURN
CENTRAL
HEATING
FLOW DHW USER
3
3
3
3
3
17
5
3
9
14
3
1
15 16 3
4
5
3
2
7
6
11
310153
9 The DHW and central heating circuits must incorporate expansion vessels of adequate capacity as well as suitably rated safety
valves. The condensate drain must be connected to a suitable collection and drain system.
9 The choice of system components and the method of their installation are left up to the heating engineer installing the system.
Installers must use their expertise to ensure proper installation and functioning in conformity to all applicable legislation.
9 If needed, water supplies and recovery circuits must be conditioned by suitable treatment systems. Refer to the values listed in
the table on page 22.
0 Never run the boiler or the pumps dry.

19
INSTALLATION
2.8 Fuel connections
GITRÈ LN boilers have their fuel connections at the rear. Fuel
supply hoses must pass through the hole (1) in the back of the
boiler before being connected to the fuel pump. Connect the
hoses provided and pass a length of about 500 mm through the
corresponding holes on the rear.
B
C
A A
1 1
DESCRIPTION GITRÈ 4 LN GITRÈ 5 LN GITRÈ 6 LN
A50 mm
B50 mm
C242 mm
B
C
A
11
DESCRIPTION GITRÈ 5 B/100 LN
A107 mm
B96 mm
C47 mm
If the oil feed system is in negative pressure, the return line must
reach the same height as the suction line. This avoids having to
install a bottom valve, which would be essential if the return
hose were to be located above the level of the fuel.
9 The installer must ensure that the negative pressure differ-
ential in the oil feed never exceeds 0.4 bar (30 cm Hg). If this
value is exceeded, the fuel oil will release gas. Make sure
that the oil hoses are perfectly oil-tight.
9 Clean out the oil tank at suitable intervals.
9 The oil feed line must be suitable for the ow rate demand-
ed by the burner. The oil feed system must also be equipped
with all the necessary safety and control devices required
by applicable legislation and standards. Refer to the table
alongside for oil feed line characteristics.
9 A lter must be installed in the oil feed line.
9 Make sure that the oil return line is not kinked or blocked
before starting up the boiler. Excessive back-pressure can
cause the pump seal to fail.
Priming the pump
To prime the oil pump simply start up the burner and check for
a ame.
If the burner enters lockout before any fuel reaches it, wait at
least 20 seconds then turn the function selector to position (II)
"Reset burner" for at least 1 second before returning it to posi-
tion (I). Wait for the burner to complete the entire ignition cycle
again, up to the ignition of the ame.
(*)
max. 4 m
H
H
(*) Automatic shut-off device (if tted). For details of
electrical connections, see the "Automatic shut-off device
(DAI)" section on pages 24 and 25
H (m) L (m)
Øi (8mm) Øi (10mm)
035 100
0,5 30 100
125 100
1,5 20 90
215 70
3 8 30
3,5 620
H = Height difference
L = Maximum length of suction hose
Øi = Internal diameter of hose
1 Suction port
2 Return
3 By-pass screw
4 Pressure gauge tting
5 Pressure adjuster screw
6 Vacuum gauge tting
7 Valve
8 Auxiliary pressure measurement tting
7 6 5 4 3 2
1
8

20
INSTALLATION
2.9 Hoses should also be xed to the oor and
suitably protected whenever possible
The discharge pipe (1), the connection to the smoke pipe (2) and
the condensate evacuation system (3) must be made in accord-
ance with the Standards, the legislation in force and local reg-
ulations.
2
≥5°
1
3
GITRÈ 4 LN - GITRÈ 6 LN
E
G
GITRÈ 5 LN - GITRÈ 5 B/100 LN
E
G
DESCRIPTION GITRÈ 4
LN
GITRÈ 5
LN
GITRÈ 6
LN
GITRÈ 5
B/100 LN
E312
mm
G (ue gas ex-
haust tting) 127-132 concentric Ø
GITRÈ LN boilers derive their comburent air from the room in
which they are installed. Suitable air vents must therefore be
provided in compliance with applicable laws and standards.
0 Do not obstruct or restrict the air vents in the room where
the boiler is installed. Adequate ventilation is essential for
correct combustion and functioning.
2.9.1 Technical specications of stack
The stack must satisfy the following requirements::
−It must be constructed from materials that are imper-
meable to ue gases and that offer lasting resistance to
mechanical stress, heat and the action of the products of
combustion and condensate
−It must be vertical, free of restrictions and contain bends
of no more than 45°
−It must be suitable for the specic operating conditions
of the boiler and must be CE marked (EN1856-1, EN1443)
−It must be of adequate dimensions to ensure draught
and venting properties suitable for the needs of the boil-
er (EN13384-1)
−It must have adequate external insulation to prevent
condensation and the cooling of ue gases
−the stack must have a dedicated condensate drain sys-
tem at the bottom.
9 The diameter of the stack must never be smaller than that of
the ue pipe from the boiler.
9 In conguration B23, the stack must guarantee the mini-
mum draught specied by applicable technical standards,
assuming zero pressure at the boiler's ue gas exhaust.
2.9.2 Connection to the stack
The boiler must be connected to the stack using rigid ue pipes
that are resistant to heat, condensate and mechanical stress. All
joins must be sealed and the nished ue must be insulated.
Only use materials that are suitable for this purpose, e.g. stain-
less steel.
The near-horizontal section of ue pipe must have a slope of at
least 5° towards the boiler and must also be properly insulated.
In long near-horizontal sections of ue pipe (L>1 m), install a
condensate drain system near the boiler exhaust (as shown in
the gure) to drain off any condensate forming in this section
of ue.
The diameter of the stack must always be greater than that of
the ue pipe from the boiler's exhaust tting. To change direc-
tion, use a T section with an inspection cap to permit easy access
for cleaning inside the pipe. After cleaning, always make sure
that inspection caps are replaced tightly and that their seals are
undamaged and efcient.
9 Flue pipes must maintain a distance of at least 500 mm
from ammable or heat sensitive construction materials.
9 Joins must be sealed with materials that are resistant to
acid condensate and to the high temperatures of the boil-
er's ue gases.
9 When installing ue pipes, always bear in mind the direc-
tion of the ue gases and of possible condensate ows.
9 Inadequate or badly dimensioned stacks and ues can in-
crease combustion noise, cause condensation problems
and affect combustion parameters.
9 Uninsulated ues are potentially dangerous and can cause
burns.
9 GITRÈ 5 LN and GITRÈ 5 B/100 LN boilers have diaphragms
tted inside the ue gas exhaust. Check that the diaphragm
is correctly positioned and take care not to damage it during
installation.