LAARS Mascot ll LMC - Users Manual - Manual (Page 4)

LAARS Heating Systems Page 4
Shut off the manual gas valve, and call the unit for
heat. Main gas valve will be energized, attempting
to light, for four (4) seconds, and then will de-
energize. The unit will go into lockout after the
required number of trial for ignition periods.
Press the manual reset button on the boiler control,
or the user display, open the manual gas valve and
allow the unit to light. While the unit is operating,
close the manual gas valve and ensure that power to
the main gas valve has been cut.
13. Within three (3) days of start-up, recheck all air
bleeders and the expansion tank as described in
Steps 4 and 8 above.
WARNING
Improper adjustment may lead to poor combustion
quality, increasing the amount of carbon monoxide
produced. Excessive carbon monoxide levels may
lead to personal injury or death.
2.2 Shutting Down Mascot II
1. Turn off the main electrical disconnect switch.
2. Close all manual gas valves.
3. If freezing is anticipated, drain Mascot II and be
sure to also protect building piping from freezing.
All water must be removed from heat exchanger
and condensate trap or else damage from freezing
may occur.
This step to be performed by a qualified service person.
2.3 To Restart Mascot II
If drained, please refer back to section 2.1 of
this manual before restarting.
1. Turn 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 (pressure switch, manual
reset high limit, etc.).
7. Switch on electrical power.
8. Burner will go through a prepurge period and
ignitor warm-up period, followed by ignition.
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.