LAARS MLXC 175 MBH User Manual
User’s Manual Document 1286A
User’s Information for
®
Mascot
LX
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,
qualied in hot water boiler and heater 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.
AVERTISSEMENT
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 qualied 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 inammables 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 qualié ou
par le fournisseur de gaz.
H2364100A
CONTENTS Pgs -
LAARS Heating Systems
MASCOT LX
SECTION 1.
General Information
Familiarizing yourself to the Laars Mascot LX ............. 1
1. Caring For Your Mascot LX ......................................2
2. Filling, Shut Down and Restart ...............................2-3
3. The User Interface and the Digital Display ............4-5
START-UP
INSTRUCTIONS
LAARS Heating Systems
WIRING
DIAGRAM
RATING PLATE
Figure 1. Opening the Mascot LX.
The top and bottom panels come off when
pulled forward. This is true for all sizes.
FAMILIARIZING YOURSELF TO THE
Mascot
®
LX
User’s Manual - Mascot LX Boilers and Water Heaters
LAARS Heating Systems
Page 2
1.5 Mascot LX, Overview
TERMINALS
Page 1
LOW VOLTAGE
FIELD CONNECTION
CENTRAL HEAT OUT
LIFT
TERMINALS
CONNECTION
(SUPPLY WATER)
CENTRAL HEAT
IN CONNECTION
(RETURN WATER)
2 SCREWS
USER
INTERFACE
ON / OFF
SWITCH
TEMPERATURE /
PRESSURE GAUGE
2 SCREWS
CENTRAL HEAT
IN CONNECTION
(RETURN WATER)
GAS SUPPLY
BOTTOM
VIEW
DHW
HOT OUT
DHW FLAT PLATE
HEAT EXCHANGER
(COMBINATION BOILERS ONLY)
COMBUSTION INLET
EXHAUST
SERVICE HATCH
GAS SUPPLY
COLD IN
DHW
AUTOMATIC
AIR VENT
LOW WATER CUT OFF
(OPTIONAL)
WATER PRESSURE
SWITCH
BLOCKED VENT
PRESSURE SWITCH
SHOWN WITH THE FRONT PANELS OFF,
AND A SIDE PANEL MISSING FOR VISUAL
PURPOSES.
CENTRAL HEAT OUT
CONNECTION
(SUPPLY WATER)
CONDENSATE
TRAP
COMBUSTION
AIR FAN
( BLOWER )
GAS VALVE
HEAT EXCHANGER
ASME TAG
HEAT EXCHANGER
3-WAY VALVE
PUMP
FOLDS DOWN
TO OPEN
HIGH VOLTAGE
FIELD CONNECTION
Figure 2. Location of Components.
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