LAARS MT2H User Manual

User's Information Manual 1238

User's Information
Manual

®

Mighty therM

2

Hydronic Boiler
Model MT2H
Sizes 200, 300, 400

FOR YOUR SAFETY: This product must be installed and serviced by a professional service technician,

qualied in 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.

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 qualied installer, service agency, or gas
supplier.

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 inammables 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 qualié ou
par le fournisseur de gaz.

AVERTISSEMENT

H2339500-

Page 2

LAARS Heating Systems

TABLE OF CONTENTS

SECTION 1.
Caring For Your Mighty Therm2

1.1 General Care ...................................................... 3

1.2 Annual Inspection of Flues and Vents ................ 3

1.3 Shutting Down the Mighty Therm2 ...................... 3

1.4 To Restart the Mighty Therm2 .............................3

1.5 In the Event of Power Failure .............................3

1.6 Full Service Every 3 Years .................................. 3

Mighty Therm2 Hydronic Boiler

Page 3

SECTION 1.
Caring For Your Mighty Therm2

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.

1.1 General Care

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.

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.

1.5 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 lling and
purging. Draining and lling shall only be done by a
qualied service person.

1.6 Full Service Every Three (3) Years

In addition to the annual visual inspections, a

qualied service agency should conduct a detailed
inspection of all ue product carrying areas of the
boiler and its venting system.

1.2 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 qualied service person.

1.3 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 qualied service person.

1.4 To Restart the Mighty Therm2

If drained, follow the Installation and
Operation Manual for proper lling 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.

WARNING

Do not use this boiler if any part has been
under water. Immediately call a qualied

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.

H2339500-

800.900.9276 • Fax [phone] (Customer Service, Service Advisors)

20 Industrial Way, Rochester, NH 03867 • 603.335.6300 • Fax [phone] (Applications Engineering)

1869 Sismet Road, Mississauga, Ontario, Canada L4W 1W8 • 905.238.0100 • Fax [phone]

www.Laars.com Litho in U.S.A. © Laars Heating Systems 1210 Document 1238