THERMEx Xantus HM 24 User manual

XANTUS (PRO)
HM 24 - HM 28
ROOM SEALED
CONVENTIONAL
COMBI BOILER
COMBI INSTALLATION AND USER’S MANUAL
Read carefully before operatng the applance

INDEX
1.INTRODUCTION
2. WARNINGS FOR THE USER
3. CONDITIONS INELIGIBLE FOR WARRANTY
4. SWITCHING ON THE BOILER
5. DAILY OPERATION OF THE BOILER
6. FILLING THE BOILER
7. SWITCHING OFF THE BOILER
8. MAINTENANCE OF THE BOILER
9. INSTALLATION INSTRUCTIONS
10. DIMENSIONS OF THE BOILER
11. CONNECTING THE FLUE
12.ELECTRIC CONNECTION
13. ELECTRIC SCHEME AND ROOM THERMOSTAT
14. ERROR CODES
15.TECHNICAL DATA
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1. INTRODUCTION
THERMEX Xantus(Pro) HM 24 - HM 28 room sealed convenonal boilers are wall hung boilers
designed to meet your needs for heang your house as well as preparing domesc hot water by
using natural gas. The boilers are suitable for natural gas fuel.
This installaon and usage manual contains detailed instrucons and recommendaons for safe
and efficient use of the boiler, further this manual contains technical data, informaon for
installaon and connecons, use, maintenance, troubleshoong and explanaon 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.
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 heang system and domesc hot water distribuon pipes are cleaned
properly before the installaon and connecon to the boiler. The manufacturer is not responsible
of any damages arising from the dirt and small parcles le inside the piping and such failures and
damages are out of warranty claim.
f. Cleaning of external surfaces of the appliance should be made by using a damp cloth, do not use
any chemical or detergent.
a. Happened in appliances not commissioned by authorised THERMEX services,
h. In order to use the appliance efficiently for years to come schedule annual maintenance of the
boiler with Thermex authorised service
2. WARNINGS FOR THE USER
a. Installaon and connecons of the boiler must be carried out in full conformity with the
governing legal regulaons, the requirements of local gas distribung Company and the
instrucons provided by the manufacturer.
b. Ensure that the flue gas connecon is not terminated in a closed compartment and connected
with no other appliance but the special chimney made to be used for the connecon of more than
one appliance and flue gas outlet cap is not clogged.
g. The appliance is not designed for children use so its installaon is made in such way to make
children difficult to access.
3. CONDITIONS INELIGIBLE FOR WARRANTY
b. Arising from installaons not confirming the instrucons given in this manual as well as those
from misuse,
The THERMEX warranty claim does not apply any failures arising from any use of the appliance out
of such menoned in this manual as well as from the following cases:
e. The commissioning of the boiler must be performed by qualified personnel/Thermex
authorised services only. Ensure that electric, water and gas connecons to the boiler are carried
out are in conformity with local requirements as well as to the instrucons provided in this
manual.

e. Arising from intervening the appliance by an unauthorized service agency,
WARNING: In summer mode the boiler does not start unless a hot water tap is opened.
h. Arising from high or low supply voltage out of the limits stated in the data plate or connecons
to a power supply line with an inefficient earth connecon,
k. Arising from freezing if anfreeze protecon cannot be acvated due to a cut of power and gas
supply,
g. Arising from natural disasters, fire and lightning strike,
d. Arising from selecng wrong type of appliance for the intended purpose,
c. Arising from selecng a wrong locaon for the appliance,
4. SWITCHING ON THE BOILER
j. Arising from other accessories and ancillary products used with the appliance,
Before starng the boiler ensure electric, gas and water connecons are properly made and the
appliance is supplied with correct power as stated in the data plate.
b. Turn gas cock to open posion.
i. Arising from the failure of observing the periodic maintenances specified in the instrucons to
be done in me by the authorized service agencies,
d. Start the boiler by adjusng to your desired temperature through temperature adjustment
buons
The warranty does not apply to above specified failures, and repair of such failures is subject to a
fee.
a. Open power supply connecon.
f. Physical failures happened aer the appliance has been delivered,
l. Manipulaon of data plate and warranty cerficate,
m. Using the appliance in a cold water supply network out of the condions set in this instrucon
manual,
c. Turn on-off buon to Summer or Winter mode at your discreon to put the appliance in
operaon. The on-off buon serves also Summer/Winter mode selecon buon. Figure 1.
WARNING: When the boiler is first started the boiler may show ignion failures and go into block
several mes ll the air in the gas supply line is evacuated. In that case turn on/off buon to “Off”
posion and wait for 3 seconds to restart the boiler.
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Figure 1

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a. When the appliance is in Summer mode and operates only for hot water producon the display
shows ( ) sign. To set hot water temperature you may turn ( ) buon in parallel to the
thickness of the adjustment line and by observing the temperature on the display for the desired
temperature.
To set central heang temperature you may turn ( ) buon from max. to min. by observing the
temperature on the display for the desired temperature.
When it is not required to use Central Heang mode of the boiler, the appliance may be turned to
Summer mode sole to produce Domesc Hot Water. In order to set Summer mode turn “on/off”
buon to ( ) posion.
5. DAILY OPERATION OF THE BOILER
Summer/Winter mode selecon;
WARNING: When the appliance is “Off” posion pump an blocking safety is acve, an-frost
protecon is not acve.
In Summer mode pump an blocking safety and an-frost protecon are acve.
( ) the mode selecon buon should be between “min” and “max” points.
b. When the appliance is in Winter mode the display shows ( ) and ( ). To set this mode;
To set hot water temperature you may turn ( ) buon in parallel to the thickness of the
adjustment line and by observing the temperature on the display for the desired temperature.
6. FILLING THE BOILER
WARNING: When the boiler switches on aer a heat demand (when the burner is on), ( ) sign is
show in the display.
Filling water is supplied through the filling valve located in the boom of the boiler, Figure 3.
With winter mode pump an blocking safety and an-frost protecon funcons are acve
When the boiler is cold the installaon 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 crical level the appliance shuts-off automacally.

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To switch off the boiler turn ON/OFF buon ( ) to “Off” posion. When the boiler is switched
off through this buon the pump anblockage funcon is acve, an-frost protecon is not acve
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 posion.
WARNING: In order an-frost protecon to be acve 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 5°C the burner the an-frost protecon switches, turns on the burner and
heats the water up to 30°C.
Figure 2
Figure 3

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Do not clean external surfaces of your appliance with detergent or chemical materials.
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.
Check your installaon before making connecons to the boiler and ensure that the installaon
pipes are free from dirt or any parcles.
The lifeme of wall hung combinaon boilers set by the Ministry of Science, Industry and Trade is
15 years. According to the relevant codes the manufacturing companies undertake to maintain
and provide required spare parts of the appliance during the set lifeme.
Check that the maximum water mains pressure does not e
xceed 8 bars; if it does, a pressure reducing valve must be i
nstalled.
The locaons where the boiler can be installed should be s
elected by observing the relevant regulaons and r
equirements set forth by standards codes of pracce in f
orce as well as local gas company standards. Installaon h
anging equipment should be fixed on the wall in such way to c
arry the weight of the boiler. The hanging bracket should be fi
xed level, Figure 4.
Make sure that the gas category for which the boiler was d
esigned corresponds to the category available in the locaon where it will be used and the
supplied gas pressure, as well as the gas installaon, is in conformity with data plate.
Boiler, support Styrofoam, installaon hanging equipment, u
ser’s manual, warranty cerficate and service booklet.
A suitable filter must be installed to the water inlet to the b
oiler, Figure 5.
Boiler package contains; Figure 4

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Figure 5

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d. On the chimney walls
11. FLUE CONNECTION
a. Building stairwells,
b. Building aisles,
When connecng the flue, the flue gas accessories supplied by the manufactured must be used.
When selecng the locaon of the boiler the posion of flue gas connecon and flue terminal
should be considered. For flue connecon the requirements set forth by the local authories and
gas distribung company must be observed.
Flue connecon must not be made to:
c. Light-wells,
e. Balconies
The followings must be observed when making flue connecon:
b. Minimum vercal 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 18 mm outside the wall.
f. Elevator shas
a. Flue terminal vercal 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.
d. Horizontally connected flue connecons must be installed with 1% downward slope.
Figure 6