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

Installation, Operation and Maintenance Instructions Document 2064DH0192500DInstallation,Operation andMaintenanceInstructions forMighty MaxVolume Wate

Page 10LAARS Heating SystemsThe following requirements must be used forNon-Category I venting:1. Laars specified vent pipe material (Table 6) andsizes

Mighty Max Volume Water HeaterPage 11Category IVertical Venting (Category I)Combustion Air InThrough LouversVertical Ventingwith DuctedCombustion AirH

Page 12LAARS Heating SystemsFigure 8. Top-To-Rear Vent Collar.Adapter PlateTop PanelVentCollar/StackBlank Plate(HeaterJacket)Blank Plate OnFlue Collec

Mighty Max Volume Water HeaterPage 13It is for this reason that, in addition to followingproper vent sizing, construction and safetyrequirements from

Page 14LAARS Heating Systemsand do not permit any other condition, such as anexhaust blower, to affect the air supply for combustionand ventilation.2.

Mighty Max Volume Water HeaterPage 15Term DescriptionPipe Single-wall galvanized steel pipe,24 gauge minimum.Joint Sealing Permanent duct tape or alum

Page 16LAARS Heating SystemsFigure 11. Wiring Diagram.CONNECTION DIAGRAMLIGHTBKCOMNO24VCOMBLRFUSIBLELINKFAN115V 24V115V/60 HzPOWER SUPPLYWFUSE2 AMPIND

Mighty Max Volume Water HeaterPage 17SECTION 3.OperationWARNINGTo avoid property damage, injury or loss of life, donot use this appliance if any part

Page 18LAARS Heating Systems4. Séquence normale d’opération. Quand la pompede circulation est en marche, la chaudière semettra automatiquement en marc

Mighty Max Volume Water HeaterPage 196. Wait five (5) minutes to clear out any gas, thensmell for gas, including near the floor. Be sure tosmell next

Page 2LAARS Heating SystemsTABLE OF CONTENTSSECTION 1.General Information1.1 Introduction... 31.2 Warr

Page 20LAARS Heating SystemsFigure 14. Unfired Venturi Differential Pressure -Natural Gas.5.8" WCGasPlenum TapGasOrifice TapVenturiInlet TapFigur

Mighty Max Volume Water HeaterPage 21By setting the gas offset pressure and gas orificedifferential pressure according to Table 10, the correctinput r

Page 22LAARS Heating Systems4. Now that the heater is firing, use the blowerdamper to readjust the venturi inlet pressureaccording to the installation

Mighty Max Volume Water HeaterPage 234.2.1 Inspection of the Heat ExchangerWARNINGImproper installation or maintenance can causenausea or asphyxiation

Page 24LAARS Heating SystemsNOTE: While the heat exchanger is out of the heater,inspect the firewall refractory insulation blocks forcracks, wear and

Mighty Max Volume Water HeaterPage 25Figure 19. Troubleshooting Chart.OUT OFPRODUCTION

Page 26LAARS Heating Systemslong as the ignition control igniter senses a stableflame.5. After the call for heat is satisfied the ignitioncontrol clos

Mighty Max Volume Water HeaterPage 275.3.2 Electrical TroubleshootingTroubleshooting procedures should only beperformed by professional service techni

Page 28LAARS Heating SystemsItem Description Part Number8. Sight Glass ... F00448009. Igniter, Hot Su

Mighty Max Volume Water HeaterPage 29Front ViewRight Side ViewOUT OFPRODUCTION

Mighty Max Volume Water HeaterPage 3SECTION 1.General Information1.1 IntroductionThis manual provides installation, operation, andmaintenance instruct

Page 30LAARS Heating SystemsFront ViewRear ViewRight Side ViewLeft Side ViewOUT OFPRODUCTION

Mighty Max Volume Water HeaterPage 31OUT OFPRODUCTION

H0192500DA subsidiary of BRADFORD WHITE Corporation20 Industrial Way, Rochester, NH 03867 • 603.335.6300 • Fax 603.335.33551355 Kuehner Drive, Simi Va

Page 4LAARS Heating SystemsAutomatically Fired Heaters, CSD-1. In Canada, otherstandards may apply. Any changes to the heater, itsgas controls, gas or

Mighty Max Volume Water HeaterPage 5Figure 3. Heater Gas Valve Arrangement.Notes: 1. These numbers are based on 1/2 inch (13mm) water column pressure

Page 6LAARS Heating SystemsNOTE: The heater and all other gas appliancessharing the heater gas supply line must be firing atmaximum capacity to proper

Mighty Max Volume Water HeaterPage 7local factory representative or Laars factory foradditional information.2.7.3 Pressure Buildup in Water SystemThe

Page 8LAARS Heating SystemsFigure 6. Installation of Tempering Valve.Mixing ValveOut -Mixed WaterFor Potable UseHot WaterFrom Water Heateror Storage T

Mighty Max Volume Water HeaterPage 92.8 Venting and Combustion AirInformationProvisions for venting and supply of air forventing and combustion must b