LAARS Mascot LX MLXC 175 MBH - Users Manual - Manual (Page 4)

LAARS Heating Systems Page 2
1. Caring For Your Mascot LX
Your Mascot LX 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 Mascot LX clean and
free from combustible materials, gasoline and other
flammable liquids and vapors.
the Mascot LX must be completely isolated and
protected from any source of corrosive chemical fumes
such as trichlorethylene, perchlorethylene, chlorine,
etc.
Keep bottom and top 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 intake screen 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 In the Event of a Power Failure
the Mascot LX can not be operated during
an electrical power outage. If there is an extended
power outage with danger from freezing, then the
Mascot LX (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 section 2 of this Manual for
instruction. All draining and filling must only be done
by a qualified service person.
1.4 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.
“open” position, allowing air to purge from boiler
loop. Valve is normally in DHW position until
there is a call for Central Heat via “t-t” contacts.
3. If a water pressure regulator is provided on the
make-up water line, adjust the pressure regulator
to provide at least 12 psi (81.8 kPa) at the highest
point in the heating loop.
4. open bleeding devices on all radiation units at the
high points in the piping throughout the system,
unless automatic air bleeders are provided at such
points.
Note that there is an air bleed located on the left
side of Mascot LX, on top of the jacket.
5. Cycle the boiler pump on and off 10 times, 10
seconds on and 10 seconds off to remove all air
from the heat exchanger. then run system and
appliance pump for a minimum of 30 minutes with
the gas shut off.
6. Using manual lever located on left side of 3-way
valve actuator, move from “open” position back to
closed position repeatedly. this process forces air
out of the internal DHW loop.
WARNING
Failure to remove all air from the heat exchanger could
lead to property damage, severe injury or death.
7. Recheck all air bleeders as described in step 4.
8. shut down the entire system and vent all radiation
units and high points in the system piping, as
described in step 4.
9. Close make-up water valve and check strainer in
pressure reducing valve for sediment or debris from
the make-up water line. Reopen make-up water
valve.
10. Check gauge for correct water pressure and then
the system is ready for operation.
11. Refer to local codes and the make-up water valve
manufacturer’s instructions as to whether the
make-up water valve should be left open or closed.
12. After placing the unit in operation, the ignition
system safety shutoff device must be tested.
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.
2. Filling, Shut Down and Restart
2.1 Filling the Boiler System
1. ensure the system is fully connected. Close all
bleeding devices and open make-up water valve.
Allow system to fill slowly.
2. Move manual lever on 3-way valve actuator to