LAARS Mighty Therm2 MT2H (Sizes 200, 300, 400) - Users Manual - Manual (Page 3)

Mighty Therm 2 Hydronic Boiler Page 3
SECTION 1.
Caring For Your Mighty Therm2
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.
1.1 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.
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 qualified 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 qualified service person.
1.4 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.
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 filling and
purging. Draining and filling shall only be done by a
qualified service person.
1.6 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.