1 - GENERAL SAFETY DEVICES 
 The boilers produced in our factory are built with care down to the last 
component to protect both the user and installer from eventual accidents.
Wethereforerecommendqualiedpersonnelthatafterworkingonthe
product they should pay particular attention to the wiring, especially the 
bare wires, that must not be exposed outside the terminal board for any 
rason to prevent any contact with the live parts of the wiring.
 This instructions manual is integral parts of the product. Make sure they 
remain with the boiler, even if it is transferred to another owner or user 
or moved to another heating system. In case of loss or damage, please 
contact your local Technical Assistance Service for a new copy.
 This boiler may only be installed and serviced by qualified fitters who 
satisfytherequirementsoflocalrules.Workmustbedoneincompliance
with regulations in force and subsequent updates.
 The boiler must be serviced at least once a year.This should be booked 
in advance with the Technical Assistance Service.
 The installer shall instruct the user in the operation of the boiler and the 
safety devices.
 This boiler may only be used for what it was expressly built to do. The 
manufacturer declines all contractual and non-contractual liability for 
injury to persons or animals or damage to property deriving from errors 
made during installation, adjustment and servicing and from improper 
use.
 This appliance is used to produce hot water and must therefore be 
connected to a heating and/or a domestic hot water system, according 
to its performance and power.
 After removing the packaging, make sure the contents are undamaged 
and complete. If this is not the case, contact your dealer.
 The safety valve outlet must be connected to a suitable collection and 
venting system. The manufacturer declines all liability for any damage 
caused by the safety valve.
 The safety and automatic adjustment devices on the appliance must 
never be modified during its lifetime, except by the maker or dealer.
 If the appliance develops a fault and/or works badly, switch it off and do 
not attempt to repair it yourself.
 Immediately after installation, inform the user that:
- in the event of leaks, he/she must shut off the water supply and 
promptly inform the Technical Assistance Service
- GREEN HE C.S.I.: he/she must check from time to time to make sure 
the symbol is not lit on the control panel.This symbol means that 
the pressure in the water system is incorrect. If necessary, fill the 
system as described in the paragraph “Boiler functions”
- GREEN HE R.S.I.: must periodically check, on the display, that the 
pressure value is between 1 and 1,5 bar; if not fill the system as 
described in the paragraph “Boiler functions”
- if the boiler is not planned to be used for a long period, he/she 
should call in the Technical Assistance Service to perform the following 
operations:
- turn off the main boiler and general system switches
- close the gas and water taps on both the heating (GREEN HE 
C.S.I.-GREEN HE R.S.I.) and domestic hot water circuits (GREEN 
HE C.S.I. only)
- drain the heating (GREEN HE C.S.I.-GREEN R.S.I.) and domestic 
hot water (GREEN HE C.S.I. only) circuits to prevent freezing.
 Connect the outlet collector to a suitable outlet system (refer to chapter 5).
Safety measures:
 the boiler should not be used by children or unassisted disabled people
 electrical devices or equipment, such as switches, appliances, etc., 
should not be used if there is a smell of gas or fumes. If there is a gas 
leak, open all the doors and windows to ventilate the area, turn off the 
general gas tap and immediately call the Technical Assistance Service
 do not touch the boiler barefoot or if parts of your body are wet or damp
 press the button until “- -” is shown on the display and disconnect the 
electricity supply by turning off the two-position system switch, before 
cleaning
 it is forbidden to modify the safety or adjustment devices without the 
manufacturer’s permission and relative instructions
 do not pull, detach or twist the wires from the boiler even if they are not 
connected to the power supply
EN ENGLISH
 do not block or reduce the size of the ventilation openings in the room
 do not leave inflammable containers or substances in the room
 keep packaging out of reach of children
 only use appliance for purposes it is devoted to
 do not lean any object on the boiler
 do not tamper with sealed elements
 it is forbidden to block the condensate outlet.
2 - BOILER INSTALLATION
Boiler must only be installed by qualified personnel.
Boiler is available in the following models:
Type
combined
CH only
Category
C
C
Model
C.S.I.
R.S.I.
Power
25-35kW
25-35kW
Exclusive GREEN HE C.S.I. is a C-type condensation wall-mounted boi-
ler for heating and producing domestic hot water; Exclusive GREEN HE 
R.S.I. is a C-type condensation wall-mounted boiler and is able to operate 
in different conditions:
- CASE A: only heating. The boiler doesn’t supply domestic hot water
- CASE B: only heating with water tank connected, managed by a thermo-
stat, to prepare domestic hot water
- CASE C: only heating with water tank connected (kit available upon re-
quest), managed by a temperature sensor, to prepare domestic hot water. 
Connecting a water tank not supplied by us, please be sure that the NTC 
sensorisedhasthefollowingfeatures:10kOhmat25°C,B3435±1%.
Depending on the type of installation selected, it is necessary to set the 
parameter “domestic hot water mode”. Refer to page 21 for description and 
setting parameter operations.
Exclusive Green HE boilers are fitted with:
- circulationatadjustablespeed(PWM=Pulse-WidthModulation)
- 1- 10 modulation, the boiler is designed to automatically modulate the flow 
rate supplied between a maximum and a minimum (see technical data)
- Range Rated, indicates that the boiler has a device for adapting to the 
system’s heat requirements, making it possible to adjust the boiler’s flow 
rate to the energy requirements of the building
The following types of fumes outlet are available for this kind of boiler: 
B23P; B53P; C13,C13x; C23; C33,C33x; C43,C43x; C53,C53x; C63,C63x; 
C83,C83x, C93,C93x.
In B23P configuration (if installed inside), do not install the apparatus in 
rooms used as bedrooms, bathrooms, showers or where there are open 
vent stacks without own air exchange. The boiler must be installed in an 
adequately ventilated room. See the UNI-CIG 7129-7131 and UNI 11071 
standards for detailed instructions on installing vent stacks, gas pipes and 
to ventilate the room.
In Cconfiguration the boiler can be installed in any type of room and there 
are no limits to aeration conditions and size of room.
Forproperinstallation,weremindyouthat:
- the boiler must not be installed over a kitchen or any other cooking equi-
pment
- minimum spaces are to be left in order to allow maintenance operations: 
at least 5,0 cm every side and 20 cm under the boiler
- it is forbidden to leave inflammable substances in the room
- suitably insulate heat-sensitive walls (e.g.: in wood).
Support plate and integrated pre-installation template are provided for with 
the boiler(Fig.1.1).
Mounting instructions:
- fix the boiler support plate (F) with the template (G) to the wall and use a 
plumb to check that it is perfectly horizontal
- trace out 4 holes (Ø 6 mm) for fixing the boiler support plate (F) and 2 
holes (Ø 4 mm) for fixing the pre-installation template (G)
- make sure all the measurements are correct, then drill holes in the wall 
using a drill and point with the diameter given previously
- fix the plate to the wall by the supplied anchor screws
- make hydraulic connections.
After installing the boiler, the screws D1(Fig.1.2)canberemoved.After
installing the boiler and connecting it to the water and gas supplies, fit the 
lower cover (A-B,Fig.1.3)sothatitshooksslipintotherelativeslotsinthe
lowerpartoftheboiler.FixthelowercoverwiththescrewC(Fig.1.4)con-
tained in the documentation envelope in the boiler.
The following symbols are used in this manual:
 CAUTION=operationsrequiringspecialcareandadequateprepa-
ration
 NOTALLOWED=operationsthatMUSTNOTbeperformed
R.S.I.:DHWfunctionsreferonlyifawatertankisconnected(accessory
available on request).