Riello RTQ 109 Owner's manual

INSTALLATION, OPERATION, MAINTENANCE AND
SYSTEM MANAGEMENT MANUAL
RTQ
STEEL
BOILERS

2
RANGE
CONFORMITY
RTQ rboilers conform o the Efficiency Directive 92/42/CEE (✫✫).
When used in conjunction with a CE marked jet burner, they also satisfy the requirements of the
Gas Directive 90/396/EEC and applicable sections of the Electromagnetic Compatibility
Directive 89/336/EEC and Low Voltage Directive 73/23/EEC.
0694
MODEL CODE MODEL CODE
RTQ 91 20012118 RTQ 597 20008946
RTQ 109 20008933 RTQ 715 20008947
RTQ 154 20008935 RTQ 837 20008948
RTQ 203 20008937 RTQ 953 20008950
RTQ 235 20008938 RTQ 1074 20011304
RTQ 297 20008940 RTQ 1308 20011317
RTQ 323 20008941 RTQ 1500 20018769
RTQ 357 20008942 RTQ 1700 20011305
RTQ 418 20008943 RTQ 2000 20016243
RTQ 467 20008944 RTQ 2336 20017225
RTQ 537 20008945

3
WARRANTY
Dear Customer,
Thank you for choosing a RTQ rboiler. You have purchased a modern, high efficiency,
quality product that is designed to give dependable and safe service and to provide com-
fort in the home for many years to come. Arrange for your boiler to be serviced regularly
by an authorised rTechnical Assistance Centre. Their personnel are specially trained
to keep your boiler efficient and cheap to run. Technical Assistance Centres also stock any
original spare parts that might be required.
This instruction manual contains important instructions and precautions that must be
observed to ensure the trouble-free installation and efficient functioning of your RTQ r
boiler.
Please accept our renewed thanks for your purchase.
Riello S.p.A.
RTQ r boilers are covered by a SPECIAL WARRANTY that comes into force from the date
of validation by your local rTechnical Assistance Centre. Consult Yellow Pages to find your
nearest Centre.
We therefore recommend that you contact your local r Technical assistance Centre to arrange for
them to start up your boiler FREE OF CHARGE in compliance with the conditions specified in the
WARRANTY CERTIFICATE supplied with it. Please read the warranty certificate thoroughly.

GENERAL
General safety information pag. 5
Precautions “ 5
Product description “ 6
Control panels control panels “ 7
Recommended burners “ 8
Product identification “ 10
Technical specifications “ 11
SYSTEM MANAGER
Start up pag. 12
Temporary shutdown “ 13
Preparing for extended periods of disuse “ 14
Cleaning “ 15
Maintenance “ 15
HEATING ENGINEER
Unpacking the product pag. 16
Overall dimensions and weights “ 17
Handling “ 18
Place of installation “ 18
Installation in older systems and systems
requiring modernisation “ 18
Water connections “ 19
Anti-condensate pump “ 20
Combustion gas exhaust “ 21
Door hinges “ 21
Fitting the casing panels “ 22
TECHNICAL ASSISTANCE SERVICE
Preparing for initial start-up pag. 25
Initial start-up “ 26
Checks during and after initial start-up “ 28
Maintenance “ 28
- Opening the door “ 28
- Adjusting the door “ 28
Cleaning the boiler “ 29
Troubleshooting “ 30
This manual, Code 20017904 Rev. 3 (12/09) is made up
of 32 pages.
CONTENTS
4
CONTENTS
The following symbols are used in this manual:
b CAUTION! = Indicates actions that requi-
re caution and adequate preparation
a STOP! = Identifies actions that you MUST NOT do

GENERAL 5
GENERAL SAFETY INFORMATION
PRECAUTIONS
b The boiler is delivered in separate crates. Check
that it is complete, undamaged and as ordered as
soon as you receive it. Report any discrepancies or
damage to the dealer who sold it.
b In Italy, Law n° 46 of the 5th March 1990 requires
that this r RTQ boiler be installed by a qualified
installation company. On completion of the installa-
tion, the installer must issue the owner with a decla-
ration of conformity confirming that the installation
has been completed to the highest standards in
compliance with the instructions provided by r
in this instruction manual, and that it conforms to all
applicable laws and standards.
b The boiler must only be used for the purpose spe-
cified by rand for which it is designed. The
manufacturer declines all responsibility, contractual
or other, for damage to property or injury to per-
sons or animals caused by improper installation,
adjustment, maintenance or use.
b If you notice any water leaking from the boiler,
disconnect it immediately from the mains electricity
supply, shut off the water supply, and notify your
local rTechnical Assistance Centre or a quali-
fied heating engineer immediately.
b Periodically check that operating pressure in the
water circuit is over 1 bar but below the maximum
limit specified for the boiler. If this is not the case,
contact r’s Technical Assistance Service or a
professionally qualified heating engineer.
b If the boiler is not going to be used for an extended
period of time, contact r’s Technical Assistance
Service or a qualified heating engineer to have it
prepared for shut-down as follows.
- Switch the boiler OFF at the control panel and at the
mains power switch.
- Close the fuel cock and heating circuit water cock.
- Drain the central heating circuit if there is any risk of
freezing.
b The boiler must be serviced at least once a year.
b This instruction manual is an integral part of the
boiler. It must be kept safe and must ALWAYS
accompany the boiler, even if it is sold to another
owner or transferred to another user or to another
installation.
If you damage or lose this manual, order a repla-
cement immediately from your local rTechnical
Assistance Centre.
aDo not allow children or infirm persons to operate
this r RTQ boiler unsupervised.
a Do not operate any electrical devices or equipment,
including switches or domestic appliances, etc., if
you can smell fuel or fumes. If you detect any suspi-
cious smells:
- Ventilate the room by opening all doors and win-
dows.
- Close the fuel shut-off cock.
- Report the fault immediately to the rTechnical
Assistance Service or a professionally qualified
heating engineer.
aDo not touch the boiler while barefoot or wet.
aNever clean or service the boiler without first
disconnecting it from the mains electricity supply
by turning the main power switch and the control
panel switch OFF.
aDo not tamper with or adjust the safety or control
devices without prior authorisation and instruc-
tions from the boiler’s manufacturer.
aNever pull, disconnect, or twist the electrical
cables coming from the boiler even if it is discon-
nected from the mains electricity supply.
aDo not obstruct or restrict the vents in the room
where the boiler is installed. Adequate ventilation
is essential for correct combustion.
aDo not expose the boiler to the elements. Do not
install the boiler outdoors. It is not designed to
work outdoors and is not fitted with the necessary
automatic anti-frost systems to do so.
aDo not switch the boiler off if outdoor temperature
drops below ZERO (risk of freezing).
aDo not store containers of flammable substances
in the room where the boiler is installed.
aDo not dispose of packaging material into the
environment, or leave it within the reach of chil-
dren, since it can become a potential hazard.
Dispose of packaging material in compliance
with applicable legislation.
The operation of any appliance that uses fuel, electrical power and water demands that a number of fundamental safety
precautions be respected.

GENERAL
6
PRODUCT DESCRIPTION
rRTQ steel boilers are high efficiency boilers with
horizontal, flame reversal combustion chambers and
concentrically arranged flue gas pipes. They are desi-
gned for central heating and, when used in conjunction
with a suitable storage cylinder, for domestic hot water
production too.
Because they operate at low pressure, they provide a
gradual heating action without thermal shock.
The most important technical features of these boilers are:
– The combustion chamber and heat exchange system
are specially designed and shaped to achieve the
best possible volume ratio.
– Only top quality materials are used to ensure a long
working life.
Stainless steel turbulators inside the flue gas pipes esta-
blish an ideal pressure inside the combustion chamber
and an ideal flue gas temperature. Evenly distributed
thermal load optimises the efficiency of the boiler-burner
system.
The boiler body is thoroughly insulated with a layer of
high density glass wool.
The boiler’s front door and the flue gas box can be ope-
ned completely to facilitate the inspection, maintenance
and cleaning of internal parts and to speed up servicing
in general.
The front door can open in either direction, even without
removing the burner.
0
30
30
60
60
90
90
3
2
1
12
46785
13
14
10
9
11
15
1 - Burner
2 - Flame inspection window with pressure
measurement / cooling valve
3 - Door
4 - Casing
5 - Central heating return
6 - Safety device fitting
7 - Instrument bulb/sensor sockets
8 - Central heating flow
9 - Flue gas pipes
10 - Turbulators
11 - Combustion chamber
12 - Flue gas exhaust
13 - Flue gas box
14 - Inspection window
15 - Condensate drain

GENERAL 7
CONTROL PANELS
b When a CL/M control panel is installed, the boiler return (cold) line must be equipped with a sensor socket.
The r control panels that can be used with r RTQ steel boilers are listed below. These control panels cater for
all the needs of the heating system and of all the devices installed in it.
20
40
60
80
100
0120
5000 TMR for central heating
only, with single stage thermosta-
tic burner.
5000 EB/T for central heating only
or central heating and domestic
hot water production with single
or two stage thermostatic burner.
5000 CL/M for central heating
with a single stage, two stage, or
modulating burner and a tempe-
rature control card. This type of
control panel also acts as master
control panel in cascaded instal-
lations.
TECH CLIMA TOP for central
heating (1 direct zone and 2
mixed zones) and domestic hot
water production with a single
stage, two stage, or modulating
burner. Also for controlling solar
heating system and cascaded
boiler systems.
TECH PRIME for central heating
only (1 direct zone) with a single
or two stage burner.
TECH CLIMA COMFORT for
central heating (1 direct zone
and 1 mixed zone) and dome-
stic hot water production with a
single stage burner. Also for con-
trolling solar heating system and
cascaded boiler systems.

8
RECOMMENDED BURNERS
The burners recommended to obtain the best possible performance from r RTQ boilers are:
GENERAL
(*) Long head REQUIRED.
(**) Burner with 2 discs supplied. Remove the tube from inside the burner and install the two discs as instructed in the
burner’s own manual.
b 1 - Long heads and burner plates are required for the correct installation and coupling of the burners.
2 - If a two stage burner is installed, 1st stage heat input must not be less than 70% of total heat input. With liquid
fuel burners equipped with 2 nozzles, it is therefore important to choose the correct first stage nozzle
BURNER RTQ
MODEL CODE 91 109 154 203 235 297 323 357 418 467 537 597 715 837 953 1074 1308 1500 1700 2000 2336 LONG
HEAD *
GAS
BS 3 t.c. 3761316 •• 3001009
BS 4 t.c. 3761416 •3001016
RS 34 /1 MZ t.l. 3788501 ••
RS 44 /1 MZ t.c. 3788600 ••• 3010429
RS 44 /1 MZ t.l. 3788601 •••
BS 3D t.c. 3761716 •• 3001009
BS 4D t.c. 3761816 •3001016
RS 34 MZ t.l. 3789001 ••
RS 44 MZ t.c. 3789100
3789130 ••• 3010429
RS 44 MZ t.l. 3789101
3789131 •••
RS 50 t.l. 3784701 •
RS 70 t.l. 3785101 ••
RS 100 t.l. 3785301 ••••
RS 130 t.l. 3785501 •
RS 190 3785812 ••• 3010443
BS 3/M t.c. 3762300 •• 3002724
BS 4/M t.c. 3762400 •3002725
RS 34/M MZ t.l. 3788701 ••
RS 44/M MZ t.l. 3788801
3788831 •••
RS 50/M t.l. 3781621 ••
RS 70/M t.l. 3789601 ••
RS 100/M t.l. 3789701 ••••
RS 130/M t.l. 9789801 •
RS 190/M t.c. 3787621 ••• 3010443
**
RS 250/M MZ t.c.
3788430
3788400 •3010412
GAS 9P/M t.l. 3754032 •

9
GENERAL
(*) Long head REQUIRED.
b See the instruction manual provided with the burner for further information on:
- Burner installation
- Electrical connections
- Burner adjustments.
b 1 - Long heads and burner plates are required for the correct installation and coupling of the burners.
2 - If a two stage burner is installed, 1st stage heat input must not be less than 70% of total heat input. With
liquid fuel burners equipped with 2 nozzles, it is therefore important to choose the correct first stage nozzle
3 - In Italy, the Decree of the President of the Council of Ministers of the 2nd October 1995 requires that heating
systems with heating power of less than 3 MW use fuel oil with a sulphur content of less than 0.3 % by weight.
BURNER RTQ
MODEL CODE 91 109 154 203 235 297 323 357 418 467 537 597 715 837 953 1074 1308 1500 1700 2000 2336 LONG
HEAD *
OIL
RG 3 3739300 •• 3000965
RG 4 S 3739600 •3000966
RG 5 S 3739900 •3001068
RG 3D 3739400 •• 3000965
RG 4D 3739700 •3000966
RG 5D 3739800 •3000981
RL 34 MZ t.l. 3470201 ••
RL 44 MZ t.c. 3470300
3470330 •3010425
RL 44 MZ t.l. 3470301
3470331 •
RL 50 t.c. 3474630 ••• 3010075
RL 50 t.l. 3474631 •••
RL 70 t.l. 3475031 ••
RL 100 t.l. 3475231 •••
RL 130 t.l. 3475431 •
RL 190 t.c. 3475612 ••• 3010444
RL 250 t.c. 3470000 •3010422
P 300 T/G t.l. 3478832 ••

GENERAL
10
b If these plates or any other means of clearly identifying the product are defaced, removed or lost, proper installation
and servicing may be rendered difficult.
– Serial number plate
This is located on the boiler body and specifies
the serial number, model, and furnace power.
– Data plate
This lists the technical specifications and perfor-
mance of the product.
It comes inside the documentation envelope. On
completion of the installation you MUST apply it in
a clearly visible position at the top of one of the
side panels.
If you damage or lose this label, order a repla-
cement immediately from r’s Technical
Assistance Service.
The boilers are identified by two plates:
PRODUCT IDENTIFICATION
b Blast tubes must not exceed the specified lengths by more than 20%.
aDo not re-use old burners if their blast tube lengths are below those specified in the table.
BURNER PLATE
rRTQ boilers have burner plates with holes arranged to accept the recommended burners. The following table
shows the dimensions of the holes.
IMPORTANT
If you are installing a new boiler but re-using an old bur-
ner, always perform the following checks.
- Make sure that the performance of the old burner is
adequate for the requirements of the boiler.
- Make sure that the length and diameter of the burner’s
blast tube are as specified in the following table.
b When you finish installing the burner in the boiler,
fill the gap between the burner’s blast tube and the
refractory material in the door with the ceramic insu-
lation (A) supplied with the boiler.
A
Ø
L
MODEL RTQ
91 109 154 203 235 297 323 357 418 467 537 597 715 837 953 1074 1308 1500 1700 2000 2336
L min. (mm) 170 170 210 300 300 300 300 300 300 300 330 330 330 330 330 350 530 530 530 530 530
Ø (mm) 130 130 130 145 145 180 180 180 185 185 195 195 195 195 205 205 230 300 300 300 350

GENERAL 11
TECHNICAL SPECIFICATIONS
b The stack must guarantee the minimum draught specified by applicable technical standards, assuming zero pressure at the connection to the flue gas exhaust. b Values obtained with rRL and GULLIVER RG burners with CO2= 12,5%; RS and GULLIVER BS burners with CO2= 9,7%.
DESCRIPTION RTQ
91 109 154 203 235 297 323 357 418 467 537 597 715 837 953 1074 1308 1500 1700 2000 2336
Fuel GAS / OIL Rated heat input
Minimum 84 90 115 166 217 257 318 348 384 448 500 575 639 766 896 1020 1150 1400 1594 1800 2100 kW
Maximum 96 115 166 217 255 318 348 384 448 500 575 639 766 896 1020 1150 1400 1606 1820 2140 2500 kW
Rated useful heat output Pn
Minimum 80,2 85,8 108,7 156,9 202,7 243,1 297,0 324,7 357,9 418,0 466,0 535,9 595,5 713,9 835,1 950,6 1071,8 1304,8 1485,6 1677,6 1957,2 kW
Maximum 90,9 108,7 154,2 202,7 235,3 297,0 322,9 356,7 418,0 467,0 537,1 596,8 715,4 836,9 952,7 1074,1 1308,0 1500,0 1700,0 2000,0 2335,8 kW
Useful efficiency at min. Pn
95,5 95,3 94,5 94,5 93,4 94,6 93,4 93,3 93,2 93,3 93,2 93,2 93,2 93,2 93,2 93,2 93,2 93,2 93,2 93,2 93,2 %
Useful efficiency at max. Pn
94,7 94,5 92,9 93,4 92,3 93,4 92,8 92,9 93,3 93,4 93,4 93,4 93,4 93,4 93,4 93,4 93,4 93,4 93,4 93,4 93,4 %
Useful eff. at 30% max. Pn - - 91,4 - 92,8 - 93,3 93,3 - 93,3 - 93,3 - 93,3 93,3 93,3 93,3 93,3 93,3 93,3 93,3 % Constant pressure drop < 1,4 < 1,2 < 1 Flue gas temperature (ΔT) 135 140 166 145 164 152 166 170 150 168 146 163 160 163 165 156 163 162 172 177 165 °C Flue gas mass flow rate 0,039 0,049 0,072 0,094 0,111 0,138 0,151 0,166 0,194 0,217 0,249 0,277 0,332 0,388 0,442 0,497 0,624 0,691 0,797 0,912 1,102 kg/sec Furnace pressure 0,5 0,9 1,6 1,8 2,7 3,5 3,9 4,1 2,9 3,3 2,5 2,9 4,7 4,5 4,6 4,9 4,9 5,7 7,2 4,5 5,1 mbar Furnace volume 91,0 91,0 91,0 138,4 138,4 199,1 199,1 199,1 298,9 298,9 410,5 410,5 410,5 548,0 695,2 912,1 1097,8 1479,4 1479,7 1569,7 2066,2 dm3 Tot. volume of flue gas side
163,2 163,2 163,2 234,3 234,3 317,2 317,2 325,6 457,9 457,9 676,8 676,8 676,8 888,3 1101,4 1388,9 1727,9 2162,7 2162,7 2531,6 3243,5 dm3
Total surface area for heat exchange 4,35 4,35 4,35 6,68 6,68 8,59 8,59 9,47 12,34 12,34 19,04 19,04 19,04 23,52 28,06 32,87 37,28 42,24 42,24 51,37 67,94 m2 Volumetric heat load 1005 1264 1824 1568 1842 1597 1748 1928 1499 1673 1401 1557 1866 1635 1467 1261 1276 1086 1231 1364 1210 kW/m3 Specific heat load 20,9 25,0 35,5 30,3 35,2 34,6 37,6 37,7 33,9 37,9 28,2 31,4 37,6 35,6 34,0 32,7 35,1 35,5 40,2 38,9 34,4 kW/m2 Max. operating pressure 5 6 bar Max. admissible temp. 100 °C Max. operating temp. 87 °C Min. admissible water return temp. 55 Pressure drop ΔT 10°C 11,0 16,0 32,0 70,0 97,0 202,0 258,0 373,0 280,0 315,0 368,0 410,0 455,0 108,0 190,0 108,0 210,0 292,0 310,0 110,0 155,0 mbar Pressure drop ΔT 20°C 2,8 3,5 7,5 17,5 25,0 48,0 65,0 93,6 70,5 74,7 92,0 93,0 109,0 24,0 46,0 23,4 52,0 84,0 105,0 28,0 40,0 mbar Water capacity 161 161 161 291 291 268 268 258 308 308 593 593 593 758 839 1080 1350 1480 1480 1716 2000 liters Turbulators 22 22 22 30 30 34 34 39 44 44 60 60 60 66 74 76 70 75 75 93 114 n°

12
START UP
ON
OFF
20
40
60
80
100
0120
20
40
60
80
100
0120
20
40
60
80
100
0120
- Check that the gas cock and heating water cock are
open
- While the system is still cold, check that working pres-
sure in the water circuit is over 1 bar but below the
maximum limit specified for the boiler
- If the system is equipped with a temperature controller
or timer thermostat, make sure that it is switched on.
- Adjust the timer thermostat/s or temperature controller
to the desired temperature (~20°C)
- Turn the system’s main power switch ON
- Set the boiler thermostat on the control panel to its
maximum value
- Turn the control panel power switch ON and make sure
that the green power indicator lights.
SYSTEM MANAGER
Have r’s Technical Assistance Service start up your
rRTQ boiler for the first time. Once this has been
done, the boiler can be left to function automatically.
Under certain circumstances, such as after long periods
of disuse, the service engineer responsible for the boiler
may need to re-start it without involving the Technical
Assistance Service.
To do so, perform the following checks and operations:

13
SYSTEM MANAGER
ON
OFF
20
40
60
80
100
0120
20
40
60
80
100
0120
20
40
60
80
100
0120
The burner should now ignite and remain in operation
until the set temperature is reached.
The burner will then switch off and on automatically to
maintain the set temperature without further operator
action.
If any ignition faults or malfunctions occur, the burner
performs a “LOCKOUT SHUTDOWN”. This is shown by
the red button light on the burner and by the warning
light on the control panel.
b If a “LOCKOUT SHUTDOWN” occurs, wait about 30
seconds before resetting the burner.
To reset the burner, press the red button light on the bur-
ner and wait until the flame ignites.
Repeat this operation 2-3 times at the most. If the pro-
blem persists after that, call
r ’s Technical Assistance
Service.
If you need to shut down the system for a short period,
proceed as follows.
- Turn the control panel power switch OFF and make
sure that the green power indicator goes out.
- Turn the mains power switch OFF
b Do NOT perform this procedure if outdoor tempera-
ture falls below ZERO (risk of freezing).
Then proceed as follows:
- Adjust the boiler thermostat to its minimum setting
(60°C)
- Make sure that the temperature controller or timer /
room thermostat is set to “frost protection” mode
TEMPORARY SHUTDOWN

ON
OFF
b The combustion chamber and flue pipes must be
cleaned periodically by rTechnical Assistance
Service or by a qualified heating engineer (see
page 28).
SYSTEM MANAGER
14
20
40
60
80
100
0120
If the boiler is not going to be used for an extended
period of time, perform the following operations:
- Turn the control panel power switch OFF and make
sure that the green power indicator goes out
- Turn the mains power switch OFF
- Close the fuel cock and heating circuit water cock
- Drain the central heating circuit if there is any risk of
freezing
b Contact r's Technical Assistance Service if you
encounter any problems in completing the above
procedure.
Use a cloth damped in soapy water to clean the boiler’s
external casing.
To remove stubborn marks, use a cloth damped in a
50% mix of water and denatured alcohol or a suitable
cleaning product.
Carefully dry the boiler after cleaning.
aDo not use abrasive cleaning pads or powder deter-
gents.
aNever clean the boiler without first disconnecting it
from the mains electricity supply by turning the main
power switch and the control panel switch OFF
PREPARING FOR EXTENDED PERIODS OF DISUSE
CLEANING

MAINTENANCE
USEFUL INFORMATION
15
SYSTEM MANAGER
In Italy, Presidential Decree n° 412 of the 26th August
1993 requires that THE PERSON RESPONSIBLE
FOR SYSTEM MANAGEMENT MUST ENSURE THAT
PROFESSIONALLY QUALIFIED HEATING ENGINEERS
UNDERTAKE PERIODIC MAINTENANCE AND
COMBUSTION EFFICIENCY MEASUREMENTS.
r’s Technical Assistance Service is qualified to satisfy
these legal requirements and can also provide useful
information on MAINTENANCE PROGRAMMES desig-
ned to guarantee:
- greater safety
- compliance with applicable legislation
- freedom from the risk of fines in the event of spot
checks.
Date Work done
Date Quantity supplied Date Quantity supplied Date Quantity supplied Date Quantity supplied
Seller: .............................................................................................................................................
Mr. .......................................................................................................................................................
Address .......................................................................................................................................
Tel. ......................................................................................................................................................
Technical Assistance Service: ....................................................................
Mr. .......................................................................................................................................................
Address .......................................................................................................................................
Tel. ......................................................................................................................................................
Fuel oil supplier: ............................................................................................................
Mr. .......................................................................................................................................................
Address .......................................................................................................................................
Tel. ......................................................................................................................................................
Installer:.......................................................................................................................................
Mr. ......................................................................................................................................................
Address ......................................................................................................................................
Tel. .....................................................................................................................................................

A
16
rRTQ steel boilers come in 2 separate crates:
1) BOILER BODY CRATE to which is attached the
documentation envelope (A) containing:
- Instruction manual
- Data label (to be applied to the casing on comple-
tion of the installation)
- Certificate of Warranty and water test certificate
- Bar code labels
- Spare parts catalogue
b The instruction manual is an integral part of the
boiler. Once located, read it thoroughly and keep it
safe.
2) THE CASING PANELS complete with assembly
accessories (2 packs for models RTQ 537÷2000
and 3 packs for models RTQ 2336).
IMPORTANT
For the boiler to function correctly, it must be connected
to a r 5000 - r TECH control panel and dedica-
ted control accessories.
HEATING ENGINEER
UNPACKING THE PRODUCT

HEATING ENGINEER 17
OVERALL DIMENSIONS AND WEIGHTS
C
165
A
A1
B
B1 E
D
100
C
165
A
A1
B
B1 E
D
100
A
A1
C
165
B
B1 E
D
100
RTQ 91÷235
RTQ 297÷467
RTQ 537÷2336
DESCRIPTION RTQ
91 109 154 203 235 297 323 357 418 467 537 597 715 837 953 1074 1308 1500 1700 2000 2336
A - Width 805 805 805 853 853 925 925 975 975 975 1150 1150 1220 1220 1285 1360 1450 1535 1535 1610 1715 mm
A1- Base width 753 753 753 803 803 875 875 925 925 925 1100 1100 1170 1170 1235 1310 1400 1485 1485 1555 1660 mm
B - Depth 1130 1130 1130 1160 1160 1480 1480 1710 1710 1710 2040 2040 2310 2310 2450 2765 3030 3055 3055 3135 3415 mm
B1- Base depth 945 945 945 1110 1110 1255 1255 1450 1450 1450 1710 1710 1930 1930 2110 2375 2470 2580 2580 2630 2980 mm
C -Height 790 790 790 840 840 980 980 1030 1030 1030 1210 1210 1280 1280 1335 1430 1530 1610 1610 1680 1850 mm
D - Burner and flue height 410 410 410 435 435 525 525 550 550 550 655 655 690 690 715 755 820 865 865 900 1000 mm
E - Door depth 135 135 135 145 145 150 150 180 180 180 195 195 205 205 215 245 270 290 290 300 300 mm
Weight of boiler 258 258 258 325 325 420 438 568 568 568 920 920 1134 1134 1336 1730 2185 2670 2670 3045 4170 kg
Weight of casing 25 25 25 30 30 35 35 42 42 42 50 50 55 55 70 87 95 110 110 115 122 kg

HEATING ENGINEER
18
HANDLING
PLACE OF INSTALLATION
INSTALLATION IN OLDER SYSTEMS AND SYSTEMS REQUIRING MODERNISATION
r RTQ steel boilers must be installed in a dedicated
boiler room, with adequately sized vents, in compliance
with applicable laws and standards.
If at all possible, the boiler should be installed on a raised
base to prevent the burner fan sucking up dust.
b When installing the boiler, allow sufficient space
around it to access all safety and control devices
and to permit easy maintenance.
b If the specific weight of the gas supply to the burner
is greater than the specific weight of air, install all
electrical parts at least 500 mm above floor level.
aDo not install the boiler outdoors. It is not designed
to work outdoors and is not fitted with the necessary
automatic anti-frost systems to do so.
When installing these boilers in old systems or systems requir-
ing modernisation, always perform the following checks:
- Make sure that the stack is able to withstand the temperature
of the combustion gases and that it has been designed and
made in compliance with applicable standards. The stack
must also be as straight as possible, sealed, insulated and
not blocked or choked.
-
Make sure that the electrical system has been installed by a
qualified electrician in compliance with applicable standards.
- Make sure that the oil feed line and any oil storage tank are
made and installed in compliance with applicable standards.
- Make sure that the expansion vessels are big enough to con-
tain the volume generated by thermal expansion.
- Make sure that flow rate, head and direction of flow of the
pumps are suitable and correct.
-
Make sure that the circuit has been flushed out to remove all
sludge and lime scale, and has been vented and seal tested.
- Make sure that a suitable water treatment system is installed if
the quality of the supply/recirculation water so demands. (See
page 19.)
rRTQ steel boilers are fitted with lifting attachments.
Take great care when moving them and only use lifting
equipment of adequate capacity.
Remove the fixing screws and remove the wooden pallet
before positioning the boiler.
b Wear suitable personal protective equipment and
use suitable safety devices.

HEATING ENGINEER 19
WATER CONNECTIONS
B
A
E5
4/6
10
D
3
1
C
2
AB100
1 4
3
C
2
5 6
D
F
AB100
1 4
3
C
2
5 6
D
F
G
E
E
G
RTQ 91÷235
RTQ 297÷467
RTQ 537÷2336
r RTQ boilers are designed and made for use in
central heating installations, but can also be used for
domestic hot water production if connected to a suitable
storage cylinder. Water fittings are as specified in the
following table:
b Allow for the dimensions of the control panel that
needs to be installed on top of the boiler.
DESCRIPTION RTQ
91 109 154 203 235 297 323 357 418 467 537 597 715 837 953 1074 1308 1500 1700 2000 2336
1 Central heating
flow
G2" G2" G2" G2" G2" G2"1/2 G2"1/2 G2"1/2 G2"1/2 G2"1/2 DN80 DN80 DN100 DN100 DN100 DN125 DN125 DN125 DN125 DN150 DN175 Ø
2 Instr. bulb/
sensor socket
G1/2" G1/2" G1/2" G1/2" G1/2" G1/2" G1/2" G1/2" G1/2" G1/2" G1/2" G1/2" G1/2" G1/2" G1/2" G1/2" G1/2" G1/2" G1/2" G1/2" G1/2" Ø
3 Safety device fit. G1"1/4 G1"1/4 G1"1/4 G1"1/4 G1"1/4 G1"1/4 G1"1/4 G1"1/4 G1"1/4 G1"1/4 G1"1/2 G1"1/2 G1"1/2 G1"1/2 G2"1/2 G2"1/2 G2"1/2 DN 80 DN 80 DN100 DN100 Ø
4 Central heating
return
G2" G2" G2" G2" G2" G2"1/2 G2"1/2 G2"1/2 G2"1/2 G2"1/2 DN80 DN80 DN100 DN100 DN100 DN125 DN125 DN125 DN125 DN150 DN175 Ø
5 Cond. drain G3/4" G3/4" G3/4" G3/4" G3/4" G3/4" G3/4" G3/4" G3/4" G3/4" G1" G1" G1" G1" G1" G1" G1" G1" G1" G1" G1" Ø
6 Boiler drain
G2" G2" G2" G2" G2" G1" G1" G1" G1" G1" G1"1/4 G1"1/4 G1"1/4 G1"1/4 G1"1/4 G1"1/4 G1"1/4 G1"1/2 G1"1/2 G1"1/2 G1"1/2 Ø
A 577 577 577 628 628 730 730 850 850 850 1000 1000 1250 1250 1300 1540 1600 1650 1650 1650 1910 mm
B
124 124 124 124 124 305 305 315 315 315 480 480 445 445 540 610 655 700 700 735 745 mm
C
115 115 115 115 115 80 80 80 80 80 75 75 105 105 105 100 100 115 115 142 122 mm
D 95 95 95 110 110 205 205 205 205 205 215 215 300 300 250 550 650 380 380 280 510 mm
E
95 95 95 120 120 110 110 110 110 110 110 110 110 110 110 110 110 115 115 115 120 mm
F - - - - - 95 95 95 95 95 95 95 95 95 95 110 115 120 120 117 155 mm
G
- - - - - 85 85 85 85 85 145 145 180 180 125 145 170 180 180 215 335 mm

HEATING ENGINEER
20
3
22
3
33
4
5
3
8
10 15
10
13
14
12
1
EAF
EAF
15
6
33
33
11
67
17 5
33
3
5
3
4
3
5
3
4
D
3÷5 D
DRAINS
b 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 exper-
tise to ensure proper installation and functioning in
compliance with all applicable legislation.
b Circuits filled with anti-freeze must be fitted with
water disconnectors.
b If needed, water supplies and recovery circuits must
be conditioned by suitable treatment systems.
See the table alongside for reference values.
b A sensor socket must be positioned at a distance of 3 to 5 times the diameter of the water return pipe, upstream
from the water fitting, to measure effective water return temperature and control the anti-condensate pump or the
temperature controller stabilisation function.
b Any temperature controllers installed remotely from the control panel must be compatible with the system’s electrical
connections and functioning logic.
ANTI-CONDENSATE PUMP
Schematic diagram - central heating and domestic hot water production
An anti-condensate pump operates during periods of
no heat request to avoid damage until the boiler returns
to a stable operating temperature. While the system is
operating, this pump must guarantee a flow rate betwe-
en 20 and 30% maximum flow to ensure a water return
temperature no lower than 55 °C. Pump shutdown must
also be delayed for at least 3 minutes at the beginning
of extended periods of boiler shutdown (overnight or
weekend shutdown etc.).
REFERENCE VALUES
PH 6-8
Electrical conductivity below 200 mV/cm (25°C)
Chlorine ions below 50 ppm
Sulphuric acid ions below 50 ppm
Total iron below 0,3 ppm
Alkalinity M below 50 ppm
Total hardness 35° F
Sulphur ions none
Ammonia ions none
Silicon ions below 30 ppm
DRAINS
HEATING
FLOW
HEATING
RETURN
DHW USER
POINTS
1 - Boiler
2 - Central heating manifolds
3 - Disconnect valves
4 - System pumps
5 - Non-return valves
6 - Automatic vent valve
7 - Boiler safety valve
8 - Boiler drain cock
9 - Storage cylinder safety valve
10 - System filling cock
11 - CH expansion vessel
12 - r 7200 storage cylinder
13 - Storage cylinder drain cock
14 - DHW expansion vessel
15 - Softener filter
16 - Pressure reducer
17 - Anti-condensate pump