Laars MIGHTY THERM2 MT2H Mode d’emploi
User's Information Manual Document 1216A
H2431000A
Hydronic Boiler
Model MT2H
Volume Water Heater
Model MT2V
Sizes 500–2000 MBTU/h
WARNING
If the information in this manual is not
followed exactly, a re or explosion may
result causing property damage, personal
injury or loss of life.
Do not store or use gasoline or other
ammable vapors and liquids in the vicinity
of this or any other appliance.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not
use any phone in your building.
• Immediately call your gas supplier from a
nearby phone. Follow the gas supplier's
instructions.
• If you cannot reach your gas supplier, call
the re department.
Installation and service must be performed by
a qualied installer, service agency, or gas supplier.
AVERTISSEMENT
Assurez-vous de bien suivres les instructions
données dans cette notice pour réduire au
minimum le risque d’incendie ou d’explosion
ou pour éviter tout dommage matériel, toute
blessure ou la mort.
Ne pas entreposer ni utiliser d’essence ni
d’autres vapeurs ou liquides inammables dans
le voisinage de cet appareil ou de tout autre
appareil.
QUE FAIRE SI VOUS SENTEZ UNE ODEUR DE GAZ:
• Ne pas tenter d’allumer d’appareils.
• Ne touchez à aucun interrupteur. Ne pas vous servir
des téléphones dansle bâtiment où vous êtes.
• Appelez immédiatement votre fournisseur de
gaz depuis un voisin. Suivez les instructions du
fournisseur.
• Si vous ne pouvez rejoindre le fournisseur de
gaz, appelez le sservice des incendies.
L’installation et l’entretien doivent être assurés par
un installateur ou un service d’entretien qualié ou
par le fournisseur de gaz.
FOR YOUR SAFETY: This product must be installed and serviced by a professional service technician,
qualied in hot water boiler installation and maintenance. Improper installation and/or operation could
create carbon monoxide gas in ue gases which could cause serious injury, property damage, or death.
Improper installation and/or operation will void the warranty. For indoor installations, as an additional
measure of safety, Laars strongly recommends installation of suitable Carbon Monoxide detectors in the
vicinity of this appliance and in any adjacent occupied spaces.
User's Information Manual for
MIGHTY THERM2®
Page 2
WARNING
Carbon Monoxide Hazard
This product burns gas to produce heat. The
appliance must be properly installed, operated, and
maintained to avoid exposure to appreciable levels
of carbon monoxide and the installer is required to
conrm that at least one carbon monoxide alarm is
installed in the living space before the appliance is put
into operation.
It is important for carbon monoxide alarms to be
installed, maintained, and replaced following the alarm
manufacturer’s instructions and applicable local codes.
AVERTISSEMENT
Danger lié au monoxyde de carbone
Ce produit brûle des gaz pour produire de la chaleur.
L’appareil requiert une installation, un fonctionnement
et une maintenance adéquates an d’éviter l’exposition
à des niveaux appréciables de monoxyde de carbone;
l’installateur est requis de conrmer qu’au moins une
alarme de détection de monoxyde de carbone est
installée dans l’espace de vie avant que l’appareil ne
soit mis en service.
Il importe que les alarmes de détection de monoxyde
de carbone soient installées, maintenues et remplacées
selon les directives du manufacturier et les codes
locaux applicables.
LAARS Heating Systems
A. General Care
Your Mighty Therm2 will require very little
Maintenance. However, as with any ne appliance
there are certain steps that should be taken to ensure
continuing optimum performance.
Keep the area around the Mighty Therm2 clean
and free from combustible materials, gasoline and
other ammable liquids and vapors.
The Mighty Therm2 must be completely isolated
and protected from any source of corrosive chemical
fumes such as trichlorethylene, perchlorethylene,
chlorine, etc.
Keep grille openings on the boiler free for proper
ventilation of interior components.
Do not obstruct or block a free ow of air to the
boiler to ensure proper ventilation.
If desired, clean the jacket surfaces with a damp
cloth and mild detergent. Do not use ammable
cleaning materials.
If sidewall vented, keep the vent terminal clear
of obstructions — do not pile snow against the vent
terminal. Clean the air lter(s) often, and then develop
an appropriate maintenance schedule.
B. Annual Inspection of Flue and Vents
Visually inspect the vent pipe once a year. Should
any deterioration exist, have the aected parts replaced
by a qualied service person.
C. Shutting Down the Mighty Therm2
1. Switch o the main electrical disconnect switch.
2. Close all manual gas valves.
3. If freezing is anticipated, drain the Mighty
Therm2 and be sure to also protect the building
piping from freezing. This step to be performed
by a qualied service person.
D. To Restart the Mighty Therm2
If drained, follow the Installation and
Operation Manual for proper lling and purging.
1. Switch o the main electrical disconnect switch.
2. Close all manual gas valves.
3. WAIT FIVE (5) MINUTES.
4. Set the aquastat or thermostat to its lowest setting.
5. Open all manual gas valves.
Page 3
WARNING
Should overheating occur or the gas supply fail to
shut o, do not turn o or disconnect the electrical
supply to the pump. Instead, shut o the gas supply
at a location external to the appliance.
WARNING
Do not use this heater if any part has been under
water. Immediately call a qualied service technician
or Gas Company personnel to inspect the site.
Heater replacement is recommended.
Mighty Therm2, (500-2000) User's Manual
6. Reset all safety switches (low water cut o,
manual reset high limit, etc.).
7. Set the temperature controller to the desired
temperature setting and switch on electrical
power.
8. Burner will go through a prepurge period and
ignitor warm-up period, followed by ignition.
E. In the Event of a Power Failure
The Mighty Therm2 can not be operated during
an electrical power outage. If there is an extended
power outage with danger from freezing, then the
Mighty Therm2 (and all other water systems) should
be drained completely. When draining the boiler, turn
o main electrical disconnect switch. When placing
back in service, refer to start-up instructions in the
Installation and Operation Manual for lling and
purging. Draining and lling shall only be done by a
qualied service person.
F. Full Service Every Three (3) Years
In addition to the annual visual inspections, a
qualied service agency should conduct a detailed
inspection of all ue product carrying areas of the
boiler and its venting system.
FOR SERVICE
Contact your installing contractor, gas utility, Laars
dealer, or call Laars for the nearest authorized
representative in your area.
Notes:
H2431000A
Customer Service and Product Support: 800.900.9276 • Fax 800.559.1583
Headquarters: 20 Industrial Way, Rochester, NH, USA 03867 • 603.335.6300 • Fax 603.335.3355
9 Brigden Gate, Halton Hills, Ontario, Canada L7G 0A3 (905) 203-0600 Fax: (905) 636-0666
www.Laars.com Litho in U.S.A. © Laars Heating Systems 23-10 Document 1216A
Laars Heating Systems Company reserves the right to change specications, components, features, or to discontinue products without notice.
Mighty Therm2, (500-2000) User's Manual
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