Laars LMH User Manual

Also see for LMC: Installation and operation instructions Installation and operation instructions User manual

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LAARS Heating SystemsPage 2SECTION 1.General InformationWARNINGMascot II units must be installed in accordancewith the procedures detailed in this manual, or theLAARS Heating Systems warranty will be voided.The installation must conform to the requirementsof the local jurisdiction having authority, and, in theUnited States, to the latest edition of the National FuelGas Code, ANSI Z223.1/NFPA54. In Canada, theinstallation must conform to the latest edition of CSAB149.1 Natural Gas and Propane Gas InstallationCode, and/or local codes. Where required by theauthority having jurisdiction, the installation of MascotII boilers must conform to the Standard for Controlsand Safety Devices for Automatically Fired Boilers,ANSI/ASME CSD-1. Any modifications to the boiler,its gas controls, or wiring may void the warranty.If field conditions require modifications, consultthe factory representative before initiating suchmodifications.1.1 IntroductionThis manual provides information necessary forthe installation, operation, and maintenance of LAARSHeating Systems Mascot II appliances. Read it carefullybefore installation.All application and installation proceduresshould be reviewed completely before proceedingwith the installation. Consult the LAARS HeatingSystems factory, or local factory representative, withany problems or questions regarding this equipment.Experience has shown that most operating problems arecaused by improper installation.Mascot II is protected against over pressurization.A pressure relief valve is included with each Mascot II.The PRV should be installed prior to filling the system.Refer to Figures 1 and 2 for PRV locations.IMPORTANT: The inlet gas pressure to the appliancemust not exceed 13” W.C. (3.2kPa).All installations must be made in accordance with1) American National Standard Z223.1/NFPA54-LatestEdition “National Fuel Gas Code” or 2) CSA B149.1“Natural Gas and Propane Installation Code” and withthe requirement of the local utility or other authoritieshaving jurisdiction. Such applicable requirements takeprecedence over the general instructions containedherein.All electrical wiring is to be done in accordancewith the local codes, or in the absence of local codes,with: 1) The National Electrical Code ANSI/NFPA No.70-latest Edition, or 2) CSA STD. C22.1 “CanadianElectrical Code - Part 1”. This appliance must beelectrically grounded in accordance with these codes.1.2 Model IdentificationConsult the rating plate on the unit. The followinginformation describes the model number structure.(1-2) Model Series DesignationL M = Mascot II(3) UsageH = Modulating BoilerC = Combination Boiler and Water Heater(4-6) Size1 2 5 = 125,000 BTU/hr input(7) FuelN = Natural GasP = LP Gas(8) AltitudeA = 0-10,000 Feet(9) Revision1 = First version(10) Options CodeX = No Options(11) Pump OptionsX = No Pump(12) Regulatory DesignationB = Internal Use1.3 Appliance OverviewSee Figure 2.1.4 WarrantyLAARS Heating Systems’ Mascot II appliancesare covered by a limited warranty. The owner shouldcomplete the warranty registration at www.Laars.com.All warranty claims must be made to an authorizedModel Nomenclature1 2 3 4 5 6 7 8 9 10 11L M 1 2 5 A 1 X XSERIESL MUSAGEH - HYDRONICC - COMBIUNITSIZEMBTU/h1 2 5FUELN - NATURALP - PROPANEALTITUDEA - 0-10,000 FEETREVISION1 - FIRSTOPTIONSX - NONEPUMPX - NONEREG DESIGNATIONB - INTERNAL USEB12H2338601-Addendum to 1239 Install/Operating Instruction ManualAddendum - Nov 16th, 2012 H2338601-Model Sizes Part No. Doc. # Page .Mascot ll 125 H2338600- Doc. 1239 2Pg 2 Model NomenclatureAn additional number has been added to theModel Nomenclature for product trackingpurposes.Page Change