Laars Mighty Max HH (Sizes 320M - 400M) - Installation, User Manual

Installation, Operation and Maintenance Instructions Document 2060EH2090800EInstallation,Operation andMaintenanceInstructions forMighty MaxTMHydronic

Page 10LAARS Heating SystemsInstall a correctly sized expansion orcompression tank with suitable air charger andtank drainer, as appropriate.5. Suppor

Mighty Max Hydronic BoilerPage 11Category IVertical Ventingwith DuctedCombustion AirHorizontal VentingAny Vent Which Does Not MeetCategory I Combustio

Page 12LAARS Heating Systemsthe latest edition of ANSI Z223.1/NFPA 54. InCanada, installation must be in accordance with CSAB149.1, and applicable loc

Mighty Max Hydronic BoilerPage 13IMPORTANT: Maximum pipe length allowed is 50 feet (15m), regardless of the number of elbows. Maximum number of elbows

Page 14LAARS Heating Systems4. Routing vent pipe through spaces which, exceptfor the terminal, remain above 60°F (16°C)during heater operation.2.12.4

Mighty Max Hydronic BoilerPage 152.13Air for Combustion and VentilationThe boiler requires air for combustion and thespace around the boiler requires

Page 16LAARS Heating Systems2.14Electrical WiringWARNINGElectrically ground the heater in accordance withthe latest edition of ANSI/NFPA 70. In Canada

Mighty Max Hydronic BoilerPage 17Figure 12. Wiring Diagram.CONNECTION DIAGRAMLIGHTBKCOMNO24VCOMBLRFUSIBLELINKFAN115V 24V115V/60 HzPOWER SUPPLYWFUSE2 A

Page 18LAARS Heating SystemsSECTION 3.OperationWARNINGDo not use this appliance if any part has beenunder water. Immediately call a qualified service

Mighty Max Hydronic BoilerPage 19de circulation est en marche, la chaudière semettra automatiquement en marche ou s’arrêteraen fonction de la températ

Page 2LAARS Heating SystemsSECTION 1.General Information1.1 Introduction ... 31.2 Warranty ...

Page 20LAARS Heating Systems• Immediately call your gas supplier from aneighbor's phone. Follow the gas supplier'sinstructions.If you don&ap

Mighty Max Hydronic BoilerPage 21and the venturi pressure switch tubes are in place andfirmly connected.The field checkout involves measuring gas andv

Page 22LAARS Heating SystemsFigure 16. Gas Offset Pressure - Natural Gas.Figure 17. Gas Orifice Differential Pressure - Natural Gas.Figure 15. Unfired

Mighty Max Hydronic BoilerPage 23screw clockwise to decrease the gas pressureoffset, turn the regulator screw counter-clockwise to increase the offset

Page 24LAARS Heating Systems7. Be sure all combustion air and ventilationopenings are not blocked.8. After installation and first startup, check the h

Mighty Max Hydronic BoilerPage 254. Inspect the filter for discoloration due tocontamination or any other forms of debris. Ifcontamination or debris e

Page 26LAARS Heating Systems2. The “IND” terminal of the ignition control isenergized for a 15 second pre-ignition purgeperiod during which the combus

Mighty Max Hydronic BoilerPage 27Figure 20. Troubleshooting Chart.OUT OFPRODUCTION

Page 28LAARS Heating Systems4. Use the troubleshooting flow chart (see Figure20) to determine what components and wiringshould be tested first.5. Test

Mighty Max Hydronic BoilerPage 29Front ViewRight Side View361089520712 131136211538412OUT OFPRODUCTION

Mighty Max Hydronic BoilerPage 3(this information can be found on the rating plate),installation date, and name of the installer. Shippingcosts are no

Page 30LAARS Heating SystemsFront ViewRear ViewRight Side ViewLeft Side View3132173023262728 2537253316183529193439OUT OFPRODUCTION

Mighty Max Hydronic BoilerPage 31Item Description Part Number22. Jacket Assembly (not shown)320M ...

H2090800E20 Industrial Way, Rochester, NH 03867 • 603.335.6300 • Fax 603.335.33551355 Kuehner Drive, Simi Valley, CA 93063 • 800.900.9276 • Fax 800.55

Page 4LAARS Heating SystemsSECTION 2.Installation Instructions2.1 General InformationInstall the Mighty Max HH boiler in accordancewith the procedures

Mighty Max Hydronic BoilerPage 5boiler when this mixture is used, increase the waterflow recommendation by 15%. Increase the head lossrequirement by 2

Page 6LAARS Heating Systemscorrosion et autres défaillances qui pourraientprésenter des risques.3. Dans la mesure du possible, fermer toutes lesportes

Mighty Max Hydronic BoilerPage 7Notes: 1. These numbers are based on 1/2 inch (13mm) water column pressure drop.2. Check supply pressure and local cod

Page 8LAARS Heating Systems2.7.2 Variable Water Flow SystemsThere can be reduced water flow through theboiler in heating systems using zone valves, zo

Mighty Max Hydronic BoilerPage 9tubes. Boilers installed in violation of the foregoingmay void the warranty.2.7.5 Combined Space Heating/PotableWater