THERMEx Rigel Series User manual

Thermex Rigel
Premix Condensing Combi Boiler
www.thermex.com.tr
Combi Boiler
Installation
And User’s
Manual
Read carefully before
operating the appliance.

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Thermex Rigel Premix Condensing Combi Boiler Installation and User’s Manual - ENG
PAGE
1- INTRODUCTION 3
2- WARNINGS FOR THE USER 3
3- CONDITIONS INELIGIBLE FOR WARRANTY 3
4- SWITCHING ON THE BOILER 4
5- DAILY OPERATION OF THE BOILER 4
6- FILLING THE BOILER 4
7- SWITCHING OFF THE BOILER 5
8- MAINTENANCE OF THE BOILER 5
9- INSTALLATION INSTRUCTIONS 5
10- DIMENSIONS OF THE BOILER 6
11- CONNECTING THE FLUE 6
12- ELECTRIC CONNECTION 7
13- ERROR CODES 8
14- TECHNICAL DATA 9
INDEX

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Thermex Rigel Premix Condensing Combi Boiler Installation and User’s Manual - ENG
Thermex Rigel PM 24 kw - 27,99 kw - 35 kw
condensing boilers are wall hung boilers designed
to produce for heating your house as well as
preparing domestic hot water by using natural gas.
The boilers are suitable for natural gas fuel.
This installation and usage manual contains
detailed instructions and recommendations for safe
and efficient use of the boiler, further this manual
contains technical data, information for installation
and connections, use, maintenance, troubleshooting
and explanation of the most possible failures of the
appliance.
Please do not operate your appliance before reading
this manual and to keep in a safe place for future
reference.
a. Installation and connections of the boiler must be
carried out in full conformity with the governing
legal regulations, the requirements of local
gas distributing Company and the instructions
provided by the manufacturer.
b. Ensure that the flue gas connection is not
terminated in a closed compartment and
connected with no other appliance but the special
chimney made to be used for the connection of
more than one appliance and flue gas outlet cap
is not clogged.
c. Ensure that the supply gas complies with the
gas type, pressure and capacity of the boiler
indicated in the data plate.
d. Ensure that both central heating system and
domestic hot water distribution pipes are
cleaned properly before the installation and
connection to the boiler. The manufacturer is
not responsible of any damages arising from the
dirt and small particles left inside the piping and
such failures and damages are out of warranty
claim.
e. The commissioning of the boiler must be
performed by qualified personnel/Thermex
authorised services only. Ensure that electric,
water and gas connections to the boiler
are carried out are in conformity with local
requirements as well as to the instructions
provided in this manual.
f. Cleaning of external surfaces of the appliance
should be made by using a damp cloth, do not
use any chemical or detergent.
g. In order to use the appliance efficiently for years
to come schedule annual maintenance of the
boiler with Thermex authorised service.
The THERMEX warranty claim does not apply any
failures arising from any use of the appliance out of
such mentioned in this manual as well as from the
following cases:
a. Happened in appliances not commissioned by
authorised THERMEX services,
b. Arising from installations not confirming the
instructions given in this manual as well as those
from misuse,
c. Arising from selecting wrong type of appliance
for the intended purpose,
d. Arising from intervening the appliance by an
unauthorized service agency,
e. Physical failures happened after the appliance
has been delivered,
f. Arising from natural disasters, fire and lightning
strike,
g. Arising from high or low supply voltage out of
the limits stated in the data plate or connections
to a power supply line with an ineficient earth
connection,
h. Arising from the failure of observing the periodic
maintenances specified in the instructions to be
done in time by the authorized service agencies,
i. Arising from other accessories and ancillary
products used with the appliance,
j. Arising from freezing
k. Manipulation of data plate and warranty
certificate,
l. Using the appliance in a cold water supply
network out of the conditions set in this instruction
manual,
The warranty does not apply to above specified
failures, and repair of such failures is subject to a
fee.
INTRODUCTION
WARNINGS FOR THE USER
1
2
CONDITIONS INELIGIBLE
FOR WARRANTY
3

Before starting the boiler ensure electric, gas and wa-
ter connections are properly made and the appliance is
supplied with correct power as stated in the data plate.
a. Open power supply connection.
b. Turn gas cock to open position.
c. The Central Heating temperature adjustment button
serves both “off”and Summer/Winter mode selection
button. When this button is “off” position the
appliance is switched off. When it is “Sun” position
the appliance is in Summer mode and only operates
for hot water production. When the Central Heating
temperature is increased the boiler is in Winter mode
and heats central heating as well. Figure 1
WARNING: In Summer mode the boiler does not
start unless a hot water tap is opened.
d. Adjust your desired temperature by temperature
adjustment buttons to put the appliance in
operation. (When the temperature adjustment
button is used the temperature adjustment is
flashes on the display and temperature adjustment
changes with 1°C steps . When you have adjusted
the desired temperature the LED display returns
to the previous status after 5 seconds.)
WARNING: When the boiler is first started the
boiler may show ignition failures and go into
block several times till the air in the gas supply
line is evacuated. In that case push Reset button
for 2 seconds to restart the boiler.
Summer/Winter/Only Heating mode selection;
When it is not required to use central heating, the
appliance may be switched to Summer mode only to
produce domestic hot water. To set Summer mode
simply turn central heating temperature adjustment
button to “Sun” symbol.
WARNING: When the appliance is “Off”
mode pump anti blocking safety,anti-frost
protection and three-way valve motor blocking
safetyfunctions are active.
a. When the appliance is Summer mode the
display shows ( ) sign. To set this mode; turn
central heating temperature adjustment button
to “Sun” symbol. To adjust domestic hot water
temperature turn ( ) button to your desired
temperature.
With summer mode pump anti blocking safety
and anti-frost protectionfunctions are active.
b. When the appliance is Winter mode the display
shows ( ) and ( ) signs.To set this mode;
just turn central heating temperature adjustment
button to minimum setting.
To adjust central heating temperature turn ( )
central heating adjustment temperature to set the
desired temperature.
To adjust domestic hot water temperature turn
( ) button to your desired temperature. With
winter mode pump anti blocking safety and anti-
frost protection functions are active.
c. When the appliance is “only heating” mode the
display shows ( ) sig.
With “only heating” mode pump anti blocking
and anti-frost protection functions are active.
WARNING: When the boiler switches on after a
heat demand (when the burner is on), ( ) sign
is shown in the display.
Filling water is supplied through the filling valve
located in the bottom of the boiler, Figure 3. When
the boiler is cold the installation should be filled such
that the manometer located in the front of the boiler,
(Figure 2) indicates a water pressure between 1-1,5
bar. When the pressure drops to the critical level the
appliance shuts-off automatically. (0-0,3)
Figure 1
SWITCHING ON THE BOILER4
FILLING THE BOILER6
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Thermex Rigel Premix Condensing Combi Boiler Installation and User’s Manual - ENG
DAILY OPERATION OF
THE BOILER
5
Fault Warning IndicatorDomestic Hot Water Symbol
Service Indicator
Multi-function Indicator
Burner On Symbol
Central Heating Symbol
Central Heating
Temperature
Adjustment
Domestic Hot Water
Temperature
Adjustment
Reset
Button
Digital
Display
Manometer

To switch off the boiler turn central heating
adjustment button to “off” position. When the boiler
is “off” position the pump antiblockage andanti-
frost protection are active and there is electric
current in the boiler. In order to switch off the boiler
completely, switch the external power supply fuse-
circuit breaker to OFF position.
WARNING: In order anti-frost protection
to be active electric and gas supply to the
boiler should not be closed. Observe the
requirements indicated in Paragraph 4. When
the temperature inside the boiler drops below
7°C the burner the anti-frost protection
switches, turns on the burner and heats the
water up to 10°C.
In order to use your appliance trouble-free and
efficiently for long years we recommend scheduling
annual maintenance, preferably at early winter
season, by Thermex authorised service.
Do not clean external surfaces of your appliance
with detergent or chemical materials.
Check your installation before making connections
to the boiler and ensure that the installation pipes
are free from dirt or any particles.
Boiler package contains:
Boiler, support
Styrofoam, installation
hanging equipment,
user’s manual,
warranty certificate
and service booklet.
The locations where
the boiler can be
installed should
be selected by
observing the relevant
regulations and
requirements set forth
by standard codes
of practice in force
as well as local gas
company standards.
Installation hanging
equipment should be fixed on the wall in such way
to carry the weight of the boiler. The hanging bracket
should be fixed level, Figure 4.
Condensate drain should be laid with continuous 2°
downward slope and to be connected to the waste
water drain. The drain hose should be insulated
against freezing.
A suitable filter and a ball valve must be installed to
the water inlet to the boiler, Figure 5.
Check that the maximum water mains pressure does
not exceed 6 bars; if it does, a pressure reducing
valve must be installed.
Make sure that the gas category for which the boiler
was designed corresponds to the category available
in the location where it will be used and the supplied
gas pressure, as well as the gas installation is in
conformity with data plate.
Check that the gas installation is in conformity with
data plate.
If the boiler is installed in an open balcony, it should
be installed inside a cabinet. The cabin should be
removable.
If the boiler is inside a cabinet; a minimum gap of 5
cm from the sides, 50 cm from the botton and 3 cm
from the front must be provided when installing the
boiler.
Manometer
Filling Tap
Figure 2
Figure 3
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Thermex Rigel Premix Condensing Combi Boiler Installation and User’s Manual - ENG
SWITCHING OFF THE BOILER7
MAINTENANCE OF THE BOILER8
INSTALLATION INSTRUCTIONS9
Figure 4
399
23980 80
680 30

Dimensions of the boiler are given in Figure 6.
When connecting the flue, the flue gas accessories
supplied by the manufactured must be used. When
selecting the location of the boiler the position of
flue gas connection and flue terminal should be
considered. For flue connection the requirements
set forth by the local authorities and gas distributing
company must be observed.
Flue connection must not be made to:
a. Building stairwells,
b. Building aisles,
c. Light-wells,
d. On the chimney walls
e. Balconies
f. Elevator shafts.
The followings must be observed when making flue
connection:
a. Flue terminal vertical distance to eaves and roof
coverings should be minimum 1,5 m from the top
and should also extend further from such eaves
and roof coverings.
b. Minimum vertical distance above the ground
should be 0,3 m and in places where there is an
impact risk the flue terminal must be covered
with a wire net.
c. When the flue terminal is extended off the wall it
must extend minimum 50 mm outside the wall.
d. Horizontally connected flue connections must be
installed with 3% upward slope.
e. Where the appliance is installed to penthouses
flue terminal should be minimum 40 cm above
the roof. In such cases the roof must be insulated
with non-combustible material.
f. Maximum length of the flue connection is 9 m.
Maximum length is shortened by 1 meter for each
additional 90° elbow and 0,5 meter for each addi-
tional 45° elbow.
g. Roof tightness must be fully ensured with vertical
flue applications. In case where tightness can-
not be ensured any failure or damage which may
arise is out of warranty claim.
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Thermex Rigel Premix Condensing Combi Boiler Installation and User’s Manual - ENG
CONNECTING THE FLUE11
Front
24 kW 28 kW
35 kW
Side
399 335 400
200 180 180
710
DIMENSIONS OF THE BOILER10
Figure 6
Figure 5
ACentral Heating Flow (3/4”)
BSanitary Water (DHW) Flow (1/2”)
CGas Inlet
DSanitary Water (DHW) Inlet (1/2”)
ECentral Heating Return (3/4”)
F Filling Tap
G Condensation Siphon
A
GF
BCD E
In the use of additional elbows,
90° 1 m
45° 0,5 m total equivalent length decreases.
Figure 7
L = max. 8 m
L = max. 8 m
Total
equivalent = 9 m

The appliance must be connected to a power supply
line with an efficient earth connection.
The appliance must be connected to 220~230V
single phase power supply line with efficient earth
connection through (3-10 A) V- Automatic circuit
breaker.
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Thermex Rigel Premix Condensing Combi Boiler Installation and User’s Manual - ENG
ELECTRIC CONNECTION12
Figure 10
L = max. 9 m
Figure 8
Figure 9
L1 + L2 = 7 m
Total equivalent = 9 m
L1 + L2 + L3 = 7 m
Total equivalent = 9 m
90° elbow = equal to 1 m ue length
45° elbow = equal to 0,5 m ue length
L1
L1
L2
L3
L2
L1
L1
L2
L3
L2

Figure 11
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Thermex Rigel Premix Condensing Combi Boiler Installation and User’s Manual - ENG
The appliance displays certain failures or warnings on the display to inform the user, Figure 11. In such case
if the error does not disappear after performing the indicated action the closest authorised service must be
called to fix the error of the appliance.
ERROR CODES13
Display
Code
Remote
Code Desription of Error Required Action
1.A 11 Outside sensor failure Check the wring
2.A 12 Return sensor failure - operates if low water flow
measurement is active only Check the wiring
3.A 13 High water pressure warning, over 2,5 bar Decrease pressure adjustment under 2 bar
4.A 14 Internal parameter error - Main card failure Parameter error - Main card replacement
5.A 15 Low water flow warning
6.A 16 Ignition electrode voltage failure Voltage unbalance
7.A 17 Low water flow warning
8.A 18 Sensor failure
If temperature difference between flow-return
sensors greater smaller than 5 degrees an
error ignal is produced
9.A 19 Fan speed control failure - Low rpm Control fan
10.A 20 Fan speed control failure - High rpm
11.A 21 Over temperature (if temperature increases over
89 degrees) The error disappears under 75 degrees
12.A 22 If water pressure drops under 0,5 bar longer than 5
seconds Pump should be stopped
13.A 23 Water pressure sensor failure
14.A 24 Main heat exchanger freezing warning, under 2
degrees Pump runs 5 minutes
16.A 26 Domestic hot water sensor failure Check sensor wiring
17.A 27 Central heating sensor failure Check sensor wiring
1.L 1 Eeprom parameter failure - Main card Card control
2.L 2 STB thermostat
The fail is signalled, all requests are inhibited,
the TWV is switched in CH direction and
the Pump is activated until the STB is open.
It’s cleared by the Reset activation if STB is
closed.
3.L 3 Flame control failure Reset the boiler
4.L 4 No flame failure Reset the boiler
5.L 5 Flame failure even no ignition Reset the boiler
6.L 6 Flue gas thermostat failure Control
7.L 7 Ignition failure Control main card

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Thermex Rigel Premix Condensing Combi Boiler Installation and User’s Manual - ENG
Figure 12
TECHNICAL DATA14
Condensing Boiler Models Unit Thermex
Rigel PM 24
Thermex
Rigel PM 28
Thermex
Rigel PM 35
Gas Type G20 G20 G20
Gas Inlet Pressure (for G20) mbar 20 20 20
Type C13, C33 C13, C33 C13, C33
Category I2H (G20=20 mbar) I2H (G20=20 mbar) I2H (G20=20 mbar)
Central Heating System
Maximum Efciency (Partial Load) %108 10 8,1 108
Efciency Class (92/42/EEC) ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
Central Heating Nominal Power (50-30°C) kW 24 2 7,9 9 35
Central Heating Minimum Power (50-30°C) kW 5,3 6,28 7, 4 4
Central Heating Nominal Power (80-60°C) kW 21,5 25,1 31,2
Central Heating Minimum Power (80-60°C) kW 4,9 5,7 6,8
Maximum Nominal Input (Qi) kW 22,6 25,9 32,3
Minimum Nominal Input (Qi) kW 5,2 6,1 7, 2
Central Heating Temperature Adjustment °C 30-80 30-80 30-80
Central Heating Circuit Max. Pressure bar 3 3 3
Central Heating Circuit Min. Pressure bar 0,8 0,8 0,8
NOx Class 6 6 6
Gas Consumption - at Maximum Power m³/h 2,38 2,74 3,42
Gas Consumption - at Minimum Power m³/h 0,57 0,64 0,76
Expansion Vessel Capacity Liter 8 8 8
Expansion Vessel Pre-charged Pressure bar 1 1 1
Domestic Hot Water (DHW) System
DHW Heating Power, Max kW 21,5 2 7, 5 32,2
DHW Heating Power, Min kW 4,9 5,7 6,8
DHW Volume (∆T = 30°C, Max) l/min. 10,3 13,2 15,4
DHW Volume (∆T = 25°C, Max) l/min. 12,3 15,8 18,4
DHW Temperature Adjustment °C 30-60 30-60 30-60
Maximum Operating Pressure bar 9 9 9
Minimum Operating Pressure bar 0,3 0,3 0,3
Annual Electric Power Consumption for DHW Production GJ 16,4 16,5 16,7
Electrical Specications
Power Supply Voltage VAC 230 230 230
Power Supply Frequency Hz 50 50 50
Power Consumption W160 160 190
Electric System Protection Grade -IP X4D IP X4D IP X4D
Connections to Installation
Gas Connection inch 3/4 3/4 3/4
Central Heating Circuit Flow / Return inch 3/4 3/4 3/4
HDW Inlet / Outlet inch 1/2 1/2 1/2
General Specications
Sound Power dB(A) 51 52 52
Flue Diameter - Ø mm 60/100 60/100 60/100
Dimensions (Height x Width x Depth), Without Package mm 710 x 399 x 335 710 x 399 x 400 710 x 399 x 400
Dimensions (Height x Width x Depth), With Package mm 760 x 430 x 392 760 x 430 x 460 760 x 430 x 460
Weight (Without Package) kg 33,6 36,6 3 7, 8
Weight (With Package) kg 35,6 39,2 40,4

Pump Operating Field
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Thermex Rigel Premix Condensing Combi Boiler Installation and User’s Manual - ENG
Thermex Rigel PM (24 kW)
Head (m)
Water Flow (m3/h)
6
5
4
3
2
1
0
0 0,5 1 1,5 2 2,5 3
Head (m)
Thermex Rigel PM (28 kW)
Head (m)
Water Flow (m3/h)
7
6
5
4
3
2
1
0
0 0,5 1 1,5 2 2,5 3
Head (m)
Thermex Rigel PM (35 kW)
Head (m)
Water Flow (m3/h)
7
6
5
4
3
2
1
0
0 0,5 1 1,5 2 2,5 3

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Thermex Rigel Premix Condensing Combi Boiler Installation and User’s Manual - ENG
This document is issued to provide information about the appliance.
THERMEX, in order to develop/improve its products, preserves the right to modify
instruction and user’s manual without prior notice.

www.thermex.com.tr
Dear Customer,
Thank you for choosing a
Thermex product.
Revision 3 / 08.05.2020