User's Information Manual Document 1216
H2329700-
WARNING
If the information in this manual is not
followed exactly, a fire or explosion may
result causing property damage, personal
injury or loss of life.
Do not store or use gasoline or other
flammable 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 fire department.
Installation and service must be performed by a
qualified installer, service agency, or gas
supplier.
FOR YOUR SAFETY: This product must be installed and serviced by a professional service technician,
qualified in boiler installation and maintenance. Improper installation and/or operation could create carbon
monoxide gas in flue gases which could cause serious injury, property damage, or death. Improper
installation and/or operation will void the warranty.
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 inflammables 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
vous trouvez.
• 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 qualifié ou
par le fournisseur de gaz.
A subsidiary of BRADFORD WHITE Corporation
Hydronic Boiler
Model MT2H
Sizes 500–2000 MBTU/h
User's Information Manual for
Mighty Therm
®
2
LAARS Heating Systems
Page 2
TABLE OF CONTENTS
SECTION 1.
Caring For Your Mighty Therm2
1A. General Care ..................................................... 3
1B. Annual Inspection of Flues and Vents ................. 3
1C. Shutting Down the Mighty Therm2 ...................... 3
1D. To Restart the Mighty Therm2 ........................... 3
1E. In the Event of Power Failure ............................. 3
1F. Full Service Every 3 Years .................................3
Page 3
Mighty Therm2
SECTION 1.
Caring For Your Mighty Therm
2
Your Mighty Therm2 will require very little
Maintenance. However, as with any fine appliance
there are certain steps that should be taken to ensure
continuing optimum performance.
1A. General Care
Keep the area around the Mighty Therm2 clean
and free from combustible materials, gasoline and
other flammable 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 flow 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 flammable
cleaning materials.
If sidewall vented, keep the vent terminal clear
of obstructions — do not pile snow against the vent
terminal. Clean the air filter(s) often, and then develop
an appropriate maintenance schedule.
1B. Annual Inspection of Flue and Vents
Visually inspect the vent pipe once a year.
Should any deterioration exist, have the affected parts
replaced by a qualified service person.
1C. Shutting Down the Mighty Therm2
1. Switch off 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 qualified service person.
1D. To Restart the Mighty Therm2
If drained, follow the Installation and
Operation Manual for proper filling and purging.
1. Switch off 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.
6. Reset all safety switches (low water cut off,
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.
1E. 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
off main electrical disconnect switch. When placing
back in service, refer to start-up instructions in the
Installation and Operation Manual for filling and
purging. Draining and filling shall only be done by a
qualified service person.
1F. Full Service Every Three (3) Years
In addition to the annual visual inspections, a
qualified service agency should conduct a detailed
inspection of all flue product carrying areas of the
boiler and its venting system.
WARNING
Do not use this boiler if any part has been under
water. Immediately call a qualified service
technician to inspect the boiler and to replace
any part of the control system and any gas
control which has been under water.
WARNING
Should overheating occur or the gas supply fail
to shut off, do not turn off or disconnect the
electrical supply to the pump. Instead, shut off
the gas supply at a location external to the
boiler.
FOR SERVICE
Contact your installing contractor, gas utility,
Laars dealer, or call Laars for the nearest
authorized representative in your area.
H2329700-
20 Industrial Way, Rochester, NH 03867 • 603.335.6300 • Fax 603.335.3355
1355 Kuehner Drive, Simi Valley, CA 93063 • 800.900.9276 • Fax 800.559.1583
(Sales, Service)
1869 Sismet Road, Mississauga, Ontario, Canada L4W 1W8 • 905.238.0100 • Fax 905.366.0130
www.Laars.com Litho in U.S.A. © Laars Heating Systems 0803 Document 1216
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