Laars Mascot LX User Manual
Laars Mascot LX User Manual

Laars Mascot LX User Manual

Wall-mounted, modulating boiler

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User's Manual
FOR YOUR SAFETY: This product must be installed and serviced by a professional service technician,
qualified in hot water boiler and heater 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.
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.
WARNING
User's Information for
M
ascot
Wall-Mounted, Modulating
Boiler
Model MLXH
50, 75, 100, 125, 150, 175,
& 220 MBH
Combination Boiler
Model MLXC
125, 150 and 175 MBH
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 êtes.
• 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.
Document 1286A
LX
®

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Summary of Contents for Laars Mascot LX

  • Page 1 User’s Manual Document 1286A User’s Information for ascot ® Wall-Mounted, Modulating Boiler Model MLXH 50, 75, 100, 125, 150, 175, & 220 MBH Combination Boiler Model MLXC 125, 150 and 175 MBH FOR YOUR SAFETY: This product must be installed and serviced by a professional service technician, qualified in hot water boiler and heater installation and maintenance.
  • Page 2 ® Mascot LX units must be installed in accordance with the procedures detailed in this manual, or the LAARS Heating Systems warranty will be voided. The installation must conform to the requirements of the local jurisdiction having authority, and, in the United States, to the latest edition of the National Fuel Gas Code, ANSI Z223.1/NFPA54. In Canada, the installation must conform to the latest edition of CSA B149.1 Natural Gas and Propane Gas Installation...
  • Page 3 LAARS Heating Systems Page 2 User’s Manual - Mascot LX Boilers and Water Heaters Page 1 1.5 Mascot LX, Overview GAS SUPPLY CENTRAL HEAT OUT CONNECTION (SUPPLY WATER) CENTRAL HEAT IN CONNECTION (RETURN WATER) BOTTOM VIEW 2 SCREWS USER INTERFACE...
  • Page 4: General Care

    1.1 General Care open bleeding devices on all radiation units at the Keep the area around the Mascot LX clean and high points in the piping throughout the system, free from combustible materials, gasoline and other unless automatic air bleeders are provided at such flammable liquids and vapors.
  • Page 5 User’s Manual - Mascot LX Boilers and Water Heaters Page 3 2.2 Shutting Down Mascot LX WARNING turn off the main electrical disconnect switch. Improper adjustment may lead to poor combustion Close all manual gas valves. quality, increasing the amount of carbon monoxide If freezing is anticipated, drain Mascot LX and be produced.
  • Page 6 User Interface is the Digital if you press the Cancel button. Display. All of the needed parameters of the Mascot LX otherwise, exit InstALLeR Mode by pressing and can be viewed and adjusted on this Digital Display. All holding ‘select/oK’...
  • Page 7: Modulation Control

    120°F + 10°F = 130°F The control will automatically reduce the firing of the the on point is 130°F – 20°F = 110°F Mascot LX to prevent the high limit from tripping. the high limit setpoint is not adjustable. Incorrect settings: P07 = 120°F...
  • Page 8 Customer Service and Product Support: Industrial Way, Rochester, NH 03867 • 603.335.6300 • Fax 603.335.3355 Headquarters: 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 1410 Document 1286A...

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