Sime RMG 70 P User manual

RMG 70÷110 P
cod. 6100028 - 12/2023 - R0

INSTALLER INSTRUCTIONS
CONTENTS
IMPORTANT
When carrying out commissioning of the boiler, you are highly recommended to perform the following
checks:
– Make sure that there are no liquids or inflammable materials in the immediate vicinity of the boiler.
– Open the gas tap and check the soundness of the connections, including that of the burner.
– Make sure that the boiler is set for operation for the type of gas supplied.
– Check that the flue pipe for the outlet of the products of the combustion is unobstructed.
– Make sure that any shutoff valves are open.
– Make sure that the system is charged with water and is thoroughly vented.
– Purge the system, bleeding off the air present in the gas pipe by operating the pressure relief valve
on the gas valve inlet.
RMG P  ENGLISH
1 DESCRIPTION OF THE BOILER ........................................................................................................ pag. 4
2 INSTALLATION................................................................................................................................... pag. 5
3 CHARACTERISTICS ........................................................................................................................... pag. 9
4 USE AND MAINTENANCE ................................................................................................................. pag. 10

4
1.1 INTRODUCTION
The “RMG P” are hot water generators
designed for medium-sized heating
plants. These appliances can be fired
by natural gas (methane) and butane
gas (G30) or propane gas (G31).
The instructions given in this manual
are provided to ensure proper instal-
lation and perfect operation of the
appliance.
1 DESCRIPTION OF THE BOILER
1.2 DIMENSIONS
PD
475
S
L
A
75
R
G
M
19 5
1000
65
555
665
Fig. 1
R C.H. return 11/2”
M C.H. flow 11/2”
G Gas connection 1”
S Boiler/filling drain 3/4”
L D P A
mm ø mm mm mm
70 P 840 180 645 415
80 P 940 180 645 415
90 P 1040 200 645 415
100 P 1140 225 645 415
110 P 1240 250 670 400
1.3 TECHNICAL FEATURES
RMG 70 P 80 P 90 P 100 P 110 P
Heat output (Pn max) kW 70.1 78.7 90.0 98.6 107.9
Heat input (Qn max) kW 77.9 87.4 100.0 109.5 120.5
Sections n° 8 9 10 11 12
Power consumption W5 5 5 5 5
Maximum water head (PMS) bar 4 4 4 4 4
Test pressure bar 6 6 6 6 6
Water content l 25 28 31 34 37
Category 2H3+ 2H3+ 2H3+ 2H3+ 2H3+
Type B11BS B11BS B11BS B11BS B11
Smokes temperature °C 158 160 160 144 140
Smokes flow kg/h 170 180 230 287 330
Maximum temperature (T max) °C 95 95 95 95 95
C.H. setting range °C 40÷85 40÷85 40÷85 40÷85 40÷85
Pilot gas nozzle
Natural gas ø mm 0.29 0.29 0.29 0.29 0.29
G30 - G31 ø mm 0.27 0.27 0.27 0.27 0.27
Main burner nozzles
Quantity n° 7 8 9 10 11
Natural gas ø mm 2.95 2.95 2.95 2.95 2.95
G30 - G31 ø mm 1.70 1.70 1.70 1.70 1.70
Gas consumption *
Natural gas m3st/h 8.2 9.2 10.6 11.6 12.7
Butane (G30) kg/h 6.0 6.8 7.7 8.5 9.3
Propane (G31) kg/h 5.9 6.7 7.6 8.3 9.1
Burner gas pressure
Natural gas mbar 9.3 9.1 9.3 9.3 9.3
Butane (G30) mbar 25.2 25.4 25.1 25.1 25.6
Propane (G31) mbar 32.6 30.2 30.0 32.7 34.3
Gas supply pressure
Natural gas mbar 20 20 20 20 20
Butane (G30) mbar 30 30 30 30 30
Propane (G31) mbar 37 37 37 37 37
Weight kg 238 266 294 322 350
* The gas consumptions refer to the calorific value at standard conditions at 15°C - 1013 mbar.

The boiler must be installed in a fixed
location and only by specialized and
qualified firms in compliance with all
instructions contained in this manual.
Furthermore, the installation must be
in accordance with current standards
and regulations.
2.1 BOILER ROOM
The “RMG P” boilers with a rating of
more than 35 kW must be equipped
with a technical room whose dimen-
sions and requirements correspond to
the current safety standards.
The minimum height of the boiler
room must comply with what is indi-
cated in fig. 3 in relation to the overall
thermal capacity.
The minimum distance between the
walls of the room and the external
points of the boiler (right, left side,
rear) must not be less than 0.60 m.
It is possible to place a number of
apparatus next to each other, on con-
dition that all the safety and control
devices can be easily reached. In addi-
tion, to circulate air in the room, air
1.4 MAIN COMPONENTS
12
1
10
11
9
4
3
2
5
8
67
Fig. 2
KEY
1 Gas valvey
2 1/2” bulb holder
3 Safety stat
4 Piezoelectric ignition
5 Main switch
6 Boiler stat
7 Thermometer
8 Smoke stat
9 1/8” pressure test point
10 Burner manifold
11 Boiler drain
12 Pilot burner
2 INSTALLATION
Fig. 3
H in relation to the overall
thermal capacity:
– not greater than 116 kW: 2.00 m
– greater than 116 kW and less
than 350 kW: 2.30 m
– greater than 350 kW and less
580 kW: 2.60 m
– greater than 580 kW: 2.90 m
5

vents must be made on the outside
walls for which the surface area must
never be less than 3,000 cm
2
and
5,000 cm
2
for gas with a density gre-
ater than 0.8.
2.1.1 Handling
Once the boiler is in its place of instal-
lation and the packaging has been
removed, proceed as follows if it must
be moved (fig. 3/a):
– remove the casing cover;
– attach the lifting brackets (located
on the rear of the boiler) and fasten
it in place with the screws provided;
– insert two 3/4” pipes in the holes in
the brackets, lift the boiler carefully
and place into position.
2.2 CONNECTING
UP SYSTEM
Before proceeding to connect up the
boiler, you are recommended to make
the water circulating in the piping in
order to eliminate any foreign bodies
that might be detrimental to the ope-
rating efficiency of the appliance.
The unit must be connected up with
rigid pipe fittings which will not subject
it to stress of any kind.
The connections should be easy to
disconnect using pipe unions with
orientable connections. You are
recommended to install suitable shu-
toff valves on the system flow and
return pipes.
In order to achieve a good water
distribution inside the cast-iron body,
the system flow and return pipes
should be connected to the same side
of the boiler.
The boiler comes supplied standard
with the attachments on the right-
hand side, with the possibility of them
being transferred to the left-hand
side.
In that case, move the water distribu-
tor, located on the return header, and
the thermostat bulbs located in the
sheathe, to the same side.
The thermal jump between the
system flow and return pipes should
not exceed 20°C. For this purpose, it
is advisable to install a mixer valve
with corresponding anti-condensation
pump.
CAUTION: The system circulation
pump or pumps must go into action
at the time of boiler ignition.
For this purpose, you are recommen-
ded to use an automatic system of
precedence.
The gas connection must be
made using seamless steel pipe
(Mannesmann type), galvanized and
with threaded joints provided with
gaskets, excluding three-piece con-
nections, except for initial and end
connections.
Where the piping has to pass throu-
gh walls, a suitable insulating sleeve
must be provided.
When sizing gas piping, from the meter
to the boiler, take into account both
the volume flow rates (consumption)
in m
3
/h and the relative density of the
gas in question.
The sections of the piping making up
the system must be such as to gua-
rantee a supply of gas sufficient to
cover the maximum demand, limiting
pressure loss between the gas meter
and any apparatus being used to not
greater than:
– 1.0 mbar for family II gases (natural
gas);
– 2.0 mbar for family III gases (butane
or propane).
An adhesive data plate is sticked insi-
de the front panel; it contains all the
technical data identifying the boiler
and the type of gas for which the boiler
is arranged.
2.3 CHARACTERISTICS
OF FEEDWATER
It is absolutely essential that the water
used for the central heating system
should be treated in the following
cases:
– Very extensive systems (with high
contents of feedwater).
– Frequent addition of makeup water
into the system.
– Should it be necessary to empty the
system either partially or totally.
2.3.1 Filter on the gas pipe
The gas valve is supplied ex factory
with an inlet filter, which, however, is
not adequate to entrap all the impu-
rities in the gas or in gas main pipes.
To prevent malfunctioning of the valve,
or in certain cases even to cut out the
safety device with which the valve is
equipped, install an adequate filter on
the gas pipe.
2.4 SYSTEM FILLING
Filling must be done slowly so as to
allow any air bubbles to be bled off
through the air vents provided on the
heating system.
The pressure of cold charging of the
system, and the pressure of pre-
pressurization of the expansion ves-
sel, must correspond, or in any case
must not be less than, the height of
the static column of the system (e.g.,
for a static column of 5 m, the pre-
pressurization pressure of the expan-
sion vessel and the charging pressure
must correspond to at least 0.5 bar).
2.5 CONNECTING UP FLUE
The flue for the atmospherical expul-
sion of the combustion products from
natural draught appliances must meet
the following requirements:
6
Fig. 3/a

7
– Be gas-tight to the combustion pro-
ducts, waterproof and thermally
insulated.
– Be built of materials suitable for
keep resisting to normal mechani-
cal stresses, heat, and the action
of combustion products and their
possible condensates.
– Follow a vertical path and not pre-
sent any throttling throughout its
entire length.
– Be adequately insulated to pre-
vent phenomena of condensation
or smokes cooling, in particular if
located outside the building or in
unheated ambiences.
– Be set at an adequate distance from
combustible or easily inflammable
material by means of an air gap or
suitable insulating material.
– Have beneath the mouth of the first
smoke duct a chamber for collec-
ting solid material and any con-
densate; the height of the chamber
must be at least 500 mm.
Access to the chamber must be
guaranteed by means of an opening
provided with an air-tight metal
door.
– Have a circular, square, or rectan-
gular internal cross section; in the
case of square or rectangular sec-
tions, the corners must be rounded
off with a radius of not less than 20
mm. However, hydraulically equiva-
lent cross sections are allowed.
– Be equipped with a chimney-pot at
the top, which must be outside the
so-called back-flow zone, so as to
prevent the formation of back-flow,
which prevents free discharge of
the products of combustion into the
atmosphere.
Therefore, conform to the minimum
heights indicated in fig. 4.
– Be devoid of mechanical means of
suction located at the top of the pipe.
– No overpressure should be present
in a chimney that passes within or
close up to inhabited rooms.
2.5.1 Sizing of flue
The correct sizing of the flue is an
essential condition for efficient boiler
operation.
The main factors to be taken into con-
sideration for calculating the section
are the heat input of the boiler, the
type of fuel, the percentage of CO2, the
mass flow of smoke at nominal load,
the temperature of the smoke, the
roughness of the internal wall, and the
effect of gravity on the draught pres-
sure, which must take into account the
external temperature and the altitude.
2.6 ELECTRICAL CONNECTION
The boiler is supplied with an electric
cable. Should this require replace-
ment, it must be purchased exclusi-
vely from SIME.
The electric power supply to the boi-
ler must be 230V-50Hz single-phase
through a fused main switch, with at
least 3 mm spacing between contacts.
The room stat must be class II as spe-
cified by standard EN 60730.1 (clean
contact).
NOTE: Device must be connected to
an efficient earthing system.
SIME declines all responsibility for
injury or damage to persons, animals
or things, resulting from the failure
to provide for proper earthing of the
appliance.
Always turn off the power supply
before doing any work on the electri-
cal panel.
Flat roof
0,50 m
0,50 m
Technical
volume
> 5 m
£ 5 m
Rooftop
> 1,50 m
£ 1,50 m
Reflux zone
1,50 m
2 m min.
0,50 m over the rooftop
45°
45° roof
Rooftop
> 1,30 m
£ 1,30 m
Reflux zone
0,80 m
1,20 m min.
0,50 m over the rooftop
30°
30° roof
Fig. 4

8
2.6.1 Wiring diagram
KEY
IG Main switch
TC Boiler stat
EV Gas valve
TA Room stat
TS Safety stat
TF Smoke stat
T Interrupted thermocouple
NOTE: When a room stat (TA), remove
the jumper from terminals 3-4.
Fig. 6
MODEL
SERIAL NUMBER
YEAR OF CONSTRUCTION
WATER CONTENT IN BOILER
HEAT INPUT MAX
HEAT OUTPUT MAX (80-60°C)
HEAT OUTPUT MAX (50-30°C)
MAX OPERATING PRESSURE
CONTENTS D.H.W.
HEAT INPUT MAX D.H.W.
MAX OPERATING PRESSURE D.H.W.
D.H.W. FLOW RATE
POWER SUPPLY
MAX POWER ABSORBED
COUNTRIES OF DESTINATION
CATEGORY
TYPE
CODE
DIRECTIVE OF REFERENCE
PIN NUMBER
HEAT INPUT MIN
HEAT OUTPUT MIN (80-60°C)
HEAT OUTPUT MIN (50-30°C)
MAX OPERATING PRESSURE
HEAT INPUT MIN D.H.W.
MAX OPERATING PRESSURE D.H.W.
ELECTRICAL PROTECTION GRADE
NOx CLASS
CODE GAS COUNCIL NUMBER (UK)
CERTIFICATION WRAS (UK)
TYPE OF GAS
GAS SUPPLY PRESSURE
CLASSIFICATIONS
2.7 TECHNICAL DATA PLATE

3.1 SMOKE SAFETY DEVICE
(fig. 7)
This is a safety device against possible
smoke emission into the ambience (8
fig. 2).
The safety device goes into action by
blocking operation of the gas valve
when the return of the smoke into the
ambience is continuous and in quan-
tities that might constitute a danger.
To restart the boiler, the cover of the
thermostat must be unscrewed and
reset the underlying button.
Make sure the control panel is discon-
nected before carrying out this ope-
ration.
Should the boiler continue to “lock
out”, it will be necessary to make a
careful check on the flue pipe, making
all the necessary modifications and
amendments so that it can work pro-
perly.
3.2 SYSTEM AVAILABLE
HEAD (fig. 8)
The head available is shown in graph
in fig. 8.
3 CHARACTERISTICS
9
0
120
2.000 9.000
8.0007.0006.000
5.000
4.0003.000
PORTATA (l/h)
PERDITA DI CARICO (mbar)
100
80
20
40
60
90
70
80
100
140
10.000 11.000
110
Fig. 8
Fig. 7
FLOW RATE (l/h)
HEAD AVAILABLE
(mbar)

4.1 GAS VALVE (fig. 10)
“RMG P” boilers come equipped stan-
dard with a SIT (810 ELETTROSIT) gas
valve.
When the boiler is ignited the first
time, it is always recommended to
bleed the piping by using the pressure
outlet upstream from the valve.
4.1.1 Gas pressure
on the main burner
All the adjustments must be made
on the basis of the specific characte-
ristics of the user appliance. Check
theinlet and outlet pressures at the
provided test points G , and H .After
testing, seal the test points using the
providedscrews. Recommended tor-
que: 2.5 Nm.
Adjustment of the gas flow to the
pilot (“PILOT ADJ”adjustment screw)
To reduce flow, turn the “PILOT ADJ”
screw clockwise.
To increase flow, turn the “PILOT ADJ”
screw anticlockwise.
Adjusting the outlet pressure (“REG
ADJ” adjustment screw)
Remove the protective plastic cap.
To increase the pressure, turn the
“REG ADJ” screw clockwise. To decre-
ase thepressure, turn the “REG ADJ”
screw anticlockwise.
Adjustment of minimum flow for slow
ignition with natural gas (“I STEP
ADJ” adjustment screw)
System no. 1
Turn the “REG ADJ” screw completely
anticlockwise. Adjust the “I STEP ADJ”
screw until the burner ignites in a
gradualand silent manner. Adjust the
“REG ADJ” screw to obtain the desired
outlet pressure. Seal the “I STEP ADJ”
and “REGADJ” screws.
System no. 2 (To be used when the
pressure regulator has already been
set and the “REG ADJ” screw is sea-
led)
Turn the “I STEP ADJ” screw com-
pletely clockwise. By trial and error,
adjust the “I STEP ADJ” screw (each
time, turn itabout 1/4 turn anti-
clockwise). After each adjustment,
pass to the pilot position by pressing
the button; wait 30-60 sand return to
the “operation” position by pressing
the cross button.When the minimum
flow which ensures slowand gradual
burner ignition has been determined,
seal the “I STEP ADJ” screw.
10
4 USE AND MAINTENANCE
Fig. 11/a
KEY
1 Pilot burner
2 Pilot nozzle
3 Spark plug
4 Interrupted thermocouple
5 Gas pipe
Fig. 11
KEY
1 Boiler body
2 Burner
3 Main nozzle
4 Aluminium washer
5 Burner manifold
KEY
1. Power button (pilot position)
2. Button for enabling the main
burner to be ignited
3. Shutdown button
4. Calibration device of the
pressure regulator (REG ADJ)
5. Adjustment screw of the slow
ignition device (1 STEP ADJ)
6. Pilot gas flow rate adjustment
screw (PILOT ADJ)
7. Override screw of the pressure
regulator (NO PR)
8. Inlet pressure point (H)
9. Outlet pressure point (G)
10. Interception solenoid valve
11. Thermocouple connections
12. Pilot outputs
13. Main gas inlet
14. Main gas outlet
15. Holes (M5) for fixing flanges
Fig. 10

4.3 MAIN AND PILOT
NOZZLES REPLACEMENT
(fig. 11 - fig. 11/a)
To replace the main nozzles proceed
as described in fig. 11, to change the
pilot nozzle instead proceed as descri-
bed in fig. 11/a:
- Loosen the screws that secure the
pilot burner to the support bracket
- Remove the spark plug and the
interrupted thermocouple
- Loosen the fitting that secures the
gas pipe to the pilot
- Replace the pilot nozzle
- Reassemble the parts removed.
4.4 GAS CONVERSION (fig. 11/b)
Adjustment of minimum flow for slow
ignition with LPG (“NO PR” override
screw)
Remove the protective cap and check
that the “NO PR” screw is turned
completely clockwise until it stops.
Adjust the”REG ADJ” screw to obtain
an outlet pressure of about 12 mbar.
Turn the “NO PR” screw completely
anticlockwise untilit stops. Adjust the
minimum flow for slow ignition using
the system no. 2 described above.
Turn the “PILOT ADJ”screw comple-
tely anticlockwise. Seal the “I STEP
ADJ”, “REG ADJ” and “PILOT ADJ”
screws.
IMPORTANT WARNING
The “NO PR” override screw must
absolutely never be left in an interme-
diate position: it must be screwed fully
in fornormal operation with town gas
and natural gas, and unscrewed com-
pletely until it stops for use with LPG.
NOTE: After assembling all the gas
connections, a test for gas tightness
must be carried out using soapy
water or special products. Do not
use naked flames. The conversion
to different gas must be carried out
exclusively by authorized technical
personnel.
4.5 SHELL DISASSEMBLY (fig. 12)
Follow the steps described below to
disassemble the shell (fig. 12):
– Remove the shell door (1) which is
attached with pressure fit pins.
– To remove the cover (3) loosen the
two screws that attach it to the flue
gas chamber and lift.
– Remove the top front panel (2) pla-
cing it against the flue gas chamber.
– Disassemble the left side (4)
unscrewing the nuts that attach it to
the tie rods.
– Do the same operation to disassem-
ble the right side (5).
– Remove the inner wall (6) by pulling
it forward.
– Unscrew the nuts that secure the
rear wall (7) to remove it from the
tie rods.
4.6 CLEANING AND
MAINTENANCE
At the end of each heating season, it is
essential to have the boiler thoroughly
checked and cleaned out. Proceed as
follows:
– Turn the main switch off to stop
electric power reaching the boiler
and close the gas feed cock.
– Remove the shell door and cover.
– Remove the top panel of the flue gas
chamber attached to it with self-
threading screws.
– Remove the gas unit.
– Insert a special brush from the top
into the rows of pins in the cast iron
exchanger and move the brush up
and down to remove the scales.
– Remove the burner from the nozzle
header and aim a jet of air toward
the inside of the burners to remove
any dust. Make sure that there are
no scales on the top drilled part of
the burners (fig. 13).
– Remove any scales from the bottom
of the boiler and replace the items
that were removed, checking the
position of the gaskets.
– Check the chimney to make sure
that the flue is clean.
– Check operation of the equipment
and the main burner.
– After assembly of all the gas con-
nections, these must be tested for
soundness, using soapy water or
appropriate products. DO NOT USE
NAKED FLAMES.
Preventive maintenance and checking
of efficient operation of equipment
and safety devices must be carried
out exclusively by authorized techni-
cal personnel.
4.7 FAULT FINDING
The main burner does not ignite.
– This means that the flue smoke stat
has tripped off.
11
Fig. 12

12
– Make sure power arrives to the gas
valve.
– Replace the electric operator of the
valve.
– Replace the valve.
The boiler reaches the set tempera-
ture, but the radiators do not heat up.
– Make sure there are no air bubbles
in the system, if so purge from
appropriate air vents.
– The room stat is too low or must be
replaced if faulty.
– The connections of the room stat
are not correct (make sure the
cables are placed on terminals 6
and 7 of the boiler terminal board).
Boiler operates only at nominal pres-
sure and does not reduce pressure.
– Check whether there is voltage at
both ends of coil.
– The coil has a break in the winding;
replace.
– The rectifier card that supplies the
coil is interrupted; replace.
– There is no differential on setting of
the two contacts of the regulating
thermostat; replace.
– Check calibration of reduced pressu-
re adjusting screw of coil assembly.
The boiler gets dirty easily causing
scaling of cast iron exchanger and
cutting off of smoke stat.
– Check that the flame of the main
burner is well regulated and that
gas consumption is proportional to
boiler output.
– Poor ventilation of premises where
boiler is installed.
– Flue with insufficient draught or not
meeting requirements.
– The boiler works at too low tempe-
ratures. Adjust the boiler thermo-
stat to higher temperatures.
Thermostat switches boiler back on
with too high temperature difference.
– Replace regulating thermostat
since it is out of calibration.
The pilot burner does not switch-on
- Check that the flow of gas to the
boiler is steady and that the air has
been removed from the pipes.
- Check that the pilot’s hole is not
clogged
- Check the activation operations.
The pilot burner does not burn cor-
rectly
- Check that the gas pressure is stea-
dy
- Clean the pilot primary air inlet
hole.
Bursts at the burner start
- Check that the pilot flame is not too
far from the main burner
- Check that the cast iron body is not
too dirty.
The main burner does not switch-on
while the pilot remains on
- Check that voltage reaches the gas
valve
- Replace the gas valve terminal
board
- Replace the gas valve.
The boiler switches off completely
including the pilot
- Check that the pilot flame is not too
short or incorrectly adjusted
- Replace the thermocouple
- Replace the gas valve.

13
BOILER IGNITION (fig. 14)
Open the gas supply cock and give
voltage to the boiler by pushing the
switch. Then, proceed as follows:
- Pilot flame ignition
Press the button and light the
pilot flame, keeping the button
fully pressed for a few secon-
ds (fig. A). In controls equipped
with electrical ignition consent,
the pilot can be switched on to
electric ignition, the pilot can
be switched on automatical-
ly by pressing the button .
Release the button and check
that the pilot flame remains
lit. In case of shutdown, repe-
at the ignition operations.
Main burner ignition
Press the cross but-
ton (fig.B) (manual versions).
Powering the automatic solenoid
valve opens the gas path to the
main burner. The valves with slow
ignitiondevicereachthemaximum
flow after a time of ~ 10 seconds.
Pilot position.
To keep the main burner clo-
sed and the pilot flame lit,
press the button fully (fig.A)
Shutdown
Press the button fully (fig. C).
ATTENTION: the reset interlock
device prevents the appliance from
being re-ignited until the flame
detection device has interrupted
the gas flow. At the end of this
period (after closing the magnetic
unit) it is possible to carry out the
re-ignition operation.
- To turn on the main burner rotate
the knob of the boiler thermostat.
Set the thermostat to a temperatu-
re of no less then 60°C as to avoid
the formation of condensation that
could jeopardise the correct opera-
tion of the device. The temperature
set on the thermostat can be read
on the boiler thermometer.
- After this sequence the boiler will
work automatically, controlled by
the room thermostat and by the
boiler thermostat.
SAFETY THERMOSTAT
(fig. 15)
The safety thermostat is of the
manually resetting type and opens,
WARNINGS
– In case of fault and/or incorrect equipment operation, deactivate it, without making any repairs or taking any
direct action. Contact the nearest qualified personnel.
– The installation of the boiler and any servicing or maintenance job must be carried out by qualified personnel.
Under no circumstances, the devices sealed by the manufacturer can be tampered with.
– It is absolutely prohibited to block the intake grilles and the aeration opening of the room where the equipment
is installed.
LIGHTING AND OPERATION
USER INSTRUCTIONS
Fig. 14
1
2
3
Fig. A Fig. B Fig. C

14
causing the main burner to turn off
immediately, whenever the tempe-
rature of 95°C is exceeded in the
boiler.
To restore boiler operation, proceed
by performing the ignition sequence
(BOILER IGNITION).
Should the appliance again “lock
out”, please approach the authori-
zed technical staff.
SMOKE SAFETY DEVICE (fig. 16)
This is a safety device against
possible smoke emission into the
ambience.
The safety device switches off the
gas valve when the return of the
smokes into the ambience is conti-
nuous and then dangerous.
To restart the boiler, the cover of the
thermostat must be unscrewed and
then press the underlying button
(fig. 16).
Should the boiler “lock out” again,
you must call the authorized tech-
nical staff.
TURNING OFF BOILER
To turn off only the main burner,
simply adjust the boiler thermostat
to the minimum.
To switch off the boiler completely,
including the pilot, press the button
of the gas valve (red button). In these
cases, you should also close the gas
supply cock and cut power from the
boiler.
ATTENTION: Should voltage mo-
mentarily be absent, the pilot will
remain on and the main burners
will start working again automati-
cally after the voltage has returned.
If the burner is accidentally extin-
guished is a good idea to wait a few
minutes before switching the ap-
pliance on again so that the gas ac-
cumulated in the combustion cham-
ber is evacuated.
GAS CONVERSION
Should it be necessary to convert
the appliance to a different gas from
the one for which the boiler has
been equipped, approach the tech-
nical staff.
CLEANING AND MAINTENANCE
At the end of each heating season,
it is essential to have the boiler tho-
roughly checked and cleaned out.
Preventive maintenance and che-
cking of the efficient operation of
the equipment and safety devices
must be carried out exclusively by
the authorized technical staff. The
boiler is supplied with an electric
cable. Should this require replace-
ment, contact exclusively with the
authorized technical staff.
Fig. 15
Fig. 16

15
EN
NOTE

INSTRUCTIONS POUR L’INSTALLATEUR
SOMMAIRE
IMPORTANT
Au moment de mettre la chaudière en marche pour la première fois, il convient de procéder aux contrôles
suivants:
– Contrôler qu’aucun liquide ni matériau inflammables ne se trouvent à proximité immédiate de la chau-
dière.
– Ouvrir le robinet du gaz et vérifier la tenue des raccords y compris celui du brûleur.
– S’assurer que la chaudière est prédisposée pour le fonctionnement avec le type de gaz distribué.
– Vérifier que le carneau d’évacuation des produits de la combustion est libre.
– S’assurer que les vannes d'arrêt éventuelles sont ouvertes.
– S’assurer que l’appareil a été rempli d’eau et qu’il est bien purgé.
– Purger le système en éliminant l'air présent dans le tuyau de gaz en actionnant la soupape de sécu-
rité à l'entrée de la vanne de gaz.
RMG P  FRANÇAIS
1 DESCRIPTION DE LA CHAUDIÈRE....................................................................................................pag. 18
2 INSTALLATION...................................................................................................................................pag. 19
3 CARACTÉRISTIQUES .........................................................................................................................pag. 23
4 UTILISATION ET ENTRETIEN............................................................................................................pag. 24

18
1.1 INTRODUCTION
Les « RMG P » sont des généra-
teurs d’eau chaude conçus pour des
appareils de chauffage de potentialité
moyenne. Ces appareils peuvent être
alimentés au gaz naturel (méthane) et
au gaz butane (G30) ou au gaz propane
(G31).
Les instructions fournies dans ce
manuel ont pour but d'assurer une
installation correcte et un fonctionne-
ment parfait de l'appareil.
1 DESCRIPTION DE LA CHAUDIÈRE
1.2 DIMENSIONS
PD
475
S
L
A
75
R
G
M
19 5
1000
65
555
665
Fig. 1
R Retour chauffage 11/2”
M Démarrage chauffage 11/2”
G Raccord de gaz 1”
S Remplissage/vidange
chaudière 3/4”
L D P A
mm ø mm mm mm
70 P 840 180 645 415
80 P 940 180 645 415
90 P 1040 200 645 415
100 P 1140 225 645 415
110 P 1240 250 670 400
1.3 CARACTÉRISTIQUES TECHNIQUES
RMG 70 P 80 P 90 P 100 P 110 P
Puissance calorifique (Pn max) kW 70,1 78,7 90,0 98,6 107,9
Débit calorique (Qn max) kW 77,9 87,4 100,0 109,5 120,5
Sections n° 8 9 10 11 12
Consommation électrique W5 5 5 5 5
Colonne d’eau maximale (PMS) bar 4 4 4 4 4
Pression d'essai bar 6 6 6 6 6
Quantité d’eau l 25 28 31 34 37
Catégorie 2H3+ 2H3+ 2H3+ 2H3+ 2H3+
Type B11BS B11BS B11BS B11BS B11
Température des fumées °C 158 160 160 144 140
Débit de fumées kg/h 170 180 230 287 330
Température maximale (T max) °C 95 95 95 95 95
Plage de régulation chauffage °C 40÷85 40÷85 40÷85 40÷85 40÷85
Injecteur de gaz principal
Gaz naturel ø mm 0,29 0,29 0,29 0,29 0,29
G30 - G31 ø mm 0,27 0,27 0,27 0,27 0,27
Injecteurs principaux du brûleur
Quantité n° 7 8 9 10 11
Gaz naturel ø mm 2,95 2,95 2,95 2,95 2,95
G30 - G31 ø mm 1,70 1,70 1,70 1,70 1,70
Consommation de gaz *
Gaz naturel m3st/h 8.2 9.2 10.6 11.6 12.7
Butane (G30) kg/h 6,0 6,8 7,7 8,5 9,3
Propane (G31) kg/h 5,9 6,7 7,6 8,3 9,1
Pression du gaz brûleur
Gaz naturel mbar 9,3 9,1 9,3 9,3 9,3
Butane (G30) mbar 25,2 25,4 25,1 25,1 25,6
Propane (G31) mbar 32,6 30,2 30,0 32,7 34,3
Pression d’alimentation gaz
Gaz naturel mbar 20 20 20 20 20
Butane (G30) mbar 30 30 30 30 30
Propane (G31) mbar 37 37 37 37 37
Poids kg 238 266 294 322 350
* Les débits de gaz se rapportent au pouvoir calorifique inférieur dans des conditions standard à 15°C - 1013mbar

19
FR
La chaudière doit être installée dans
un lieu fixe et uniquement par des
entreprises spécialisées et qualifiées,
en respectant toutes les instructions
contenues dans ce manuel.
En outre, l'installation doit être con-
forme aux normes et réglementations
en vigueur.
2.1 LE LOCAL DE LA CHAUDIÈRE
Les chaudières «RMG P» d'une puis-
sance supérieure à 35kW doivent être
équipées d'un local technique dont
les dimensions et les exigences cor-
respondent aux normes de sécurité
en vigueur.
La hauteur minimale de la chaufferie
doit être conforme à ce qui est indiqué
dans la figure 3 par rapport à la capa-
cité thermique totale.
La distance minimum entre les murs
du local et les points extérieurs de la
chaudière (côté droit, gauche, arrière)
ne doit pas être inférieure à 0,60m.
Il est possible de placer plusieurs
chaudières l'une à côté de l'autre, à
condition que tous les dispositifs de
sécurité et de contrôle soient faci-
lement accessibles. En outre, pour
faire circuler l'air dans la pièce, il faut
prévoir des bouches d'aération sur les
murs extérieurs dont la surface ne
doit jamais être inférieure à 3000cm
2
et 5000cm
2
pour les gaz d’une den-
sité supérieure à 0,8.
2.1.1 Manutention
Une fois que la chaudière est en place
sur son lieu d'installation et que l'em-
ballage a été enlevé, il faut procéder
1.4 PRINCIPAUX COMPOSANTS
12
1
10
11
9
4
3
2
5
8
67
Fig. 2
LÉGENDE
1 Vanne de gaz
2 Douille 1/2”
3 Thermostat de sécurité
4 Allumage piézoélectrique
5 Interrupteur principal
6 Thermostat de la chaudière
7 Thermomètre
8 Thermostat fumées
9 Prise de pression 1/8”
10 Collecteur brûleur
11 Vidange chaudière
12 Veilleuse de brûleur
2 INSTALLATION
Fig. 3
H en fonction du débit
thermique total:
– pas supérieur à 116 kW: 2,00 m
– supérieur à 116 kW et moins
de 350 kW: 2,30 m
– supérieur à 350 kW et moins
de 580 kW: 2,60 m
– supérieur à 580 kW: 2,90 m

20
comme suit si celle-ci doit être dépla-
cée (fig. 3/a):
- retirer le couvercle de l'habillage;
– fixer les supports de levage (situés à
l'arrière de la chaudière) et les fixer
à l'aide des vis prévues à cet effet;
– introduire deux tuyaux de 3/4" dans
les trous des supports, soulever
la chaudière avec précaution et la
positionner.
2.2 RACCORDEMENT
DE L’INSTALLATION
Avant de procéder au raccordement
de la chaudière, il est recommandé de
faire circuler l'eau dans les tuyauteri-
es afin d'éliminer tout corps étranger
qui pourrait nuire au bon fonctionne-
ment de l'appareil.
L'appareil doit être raccordé à l'aide
de raccords de tuyauterie rigides qui
ne le soumettent à aucun type de
contrainte.
Les raccordements doivent être faci-
les à déconnecter en utilisant des rac-
cords de tuyauterie avec des conne-
xions orientables. Il est recommandé
d'installer des vannes d'arrêt appro-
priées sur les tuyaux de refoulement
et de retour du système.
Pour obtenir une bonne distribu-
tion de l'eau à l'intérieur du corps
en fonte, les tuyaux de refoulement
et de retour de l'installation doivent
être raccordés du même côté de la
chaudière.
La chaudière est livrée en standard
avec les accessoires sur le côté droit,
mais il est possible de les transférer
sur le côté gauche.
Dans ce cas, il est nécessaire de
déplacer le distributeur d'eau, situé
sur le collecteur de retour, et les
bulbes du thermostat, situés dans la
gaine, du même côté.
L'écart thermique entre les tuyaux de
refoulement et de retour du système
ne doit pas dépasser 20°C. Pour ce
faire, il est conseillé d'installer un
mitigeur avec la pompe anti-conden-
sation correspondante.
ATTENTION : La ou les pompes de
circulation du système doivent entrer
en service au moment de l'allumage
de la chaudière.
Pour cela, il est recommandé d'u-
tiliser un système automatique de
priorité.
Le raccordement au gaz doit être
effectué à l'aide de tuyaux en acier
sans soudure (type Mannesmann),
galvanisés et à joints filetés munis de
joints d'étanchéité, à l'exclusion des
raccords en trois pièces, sauf pour les
raccordements initiaux et finaux.
Lorsque la tuyauterie doit traverser
des murs, un manchon isolant appro-
prié doit être prévu.
Pour déterminer les dimensions de la
tuyauterie de gaz, du compteur à la
chaudière, il convient de tenir compte
à la fois des débits volumiques (con-
sommation) en m
3
/h et de la densité
relative du gaz en question.
Les sections des tuyauteries compo-
sant l'installation doivent être conçues
de manière à garantir une alimen-
tation en gaz suffisante pour couvrir
la demande maximale, en limitant la
perte de pression entre le compteur
de gaz et tout appareil utilisé à un
niveau non supérieur à:
- 1,0 mbar pour les gaz de la famille II
(gaz naturel);
- 2,0 mbar pour les gaz de la famille III
(butane ou propane).
Une plaque signalétique adhésive est
collée à l'intérieur du panneau fron-
tal; elle contient toutes les caractéri-
stiques techniques identifiant la chau-
dière et le type de gaz pour lequel la
chaudière est prévue.
2.3 CARACTÉRISTIQUES
DE L’EAU D’ALIMENTATION
Il est absolument indispensable de
traiter l'eau utilisée pour le système
de chauffage central dans les cas
suivants:
- Systèmes très étendus (avec des
quantités importantes d'eau d'ali-
mentation);
- Ajout fréquent d'eau d'appoint dans
le système;
- En cas de nécessité de vidange par-
tielle ou totale de l'installation.
2.3.1 Filtre sur le tuyau de gaz
La vanne de gaz est équipée de série
d’un filtre d’entrée qui n’est toutefois
pas en mesure de retenir toutes les
impuretés contenues dans le gaz et
dans la tuyauterie de gaz.
Pour éviter tout mauvais fonctionne-
ment de la vanne, voire dans certains
cas pour éviter l’exclusion de la sécu-
rité dont elle est équipée, il est con-
seillé de monter sur le tuyau du gaz un
filtre approprié.
2.4 REMPLISSAGE DU SYSTÈME
Le remplissage doit être effectué
lentement pour permettre aux bul-
les d'air de s'échapper à travers les
évents prévus à cet effet situés sur
l'appareil de chauffage.
La pression de chargement à froid du
système et la pression de précharge
du vase d'expansion doivent corre-
spondre, ou en tout cas ne pas être
inférieures, à la hauteur de la colonne
statique du système (par exemple,
pour une colonne statique de 5m, la
pression de précharge du vase d'ex-
pansion et la pression de charge-
ment doivent correspondre à au moins
0,5bar).
2.5 RACCORDEMENT DU CARNEAU
Le carneau destiné à l'évacuation
dans l'atmosphère des produits de
combustion des appareils à tirage
naturel doit répondre aux exigences
suivantes:
– être étanche aux produits de la
combustion, imperméable et isolé
thermiquement;
– être réalisé dans des matériaux
aptes à résister dans le temps aux
Fig. 3/a