Laars Mighty Max VW Series Installation, Operation And Maintenance Instructions Download Page 25 | Manualshive

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Mighty Max Volume Water Heater

Page 25

Figure 19. Troubleshooting Chart.

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Summary of Contents for Mighty Max VW Series

Page 1: ...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...

Page 2: ...ersion for Ducted Combustion Air 14 2K 4 Combustion Air Piping 15 2L Electrical Wiring 15 SECTION 3 Operation 3A Start Up Requirements 17 3B Hi Limit Checkout 17 3C Venturi and Gas Pressure Regulator...

Page 3: ...clude the heater serial number and model number this information can be found on the rating plate installation date and name of the installer Shipping costs are not included in the warranty coverage S...

Page 4: ...utdoor From Combustibles Inches mm Inches mm Top 18 457 Unobstructed Water Conn Side 12 305 12 305 Opposite side 6 152 6 152 Front Alcove Unobstructed Rear 6 152 6 152 Vent 6 152 Flooring Combustible...

Page 5: ...drop 2 Check supply pressure and local code requirements before proceeding with work 3 Pipe fittings must be considered when determining gas pipe sizing Table 3 Natural Gas and Propane Pipe Size Requ...

Page 6: ...controls see Figure 4 Fit the trap with a threaded cap which can be removed for cleaning 5 When required by code install a second manual gas shutoff valve Do not remove manual shutoff valve supplied w...

Page 7: ...circulating pump is essential for proper operation of the heater see Section 2G 5 The heater circulating pump must be sized to provide enough flow to prevent damage to the heat exchanger and must hand...

Page 8: ...of withstanding 210 F 99 C without distortion 4 Must be installed to allow complete drainage of both the relief valve and discharge pipe 5 Must not have any valve between the relief valve and the end...

Page 9: ...ls to the heating system piping since the piping contains water for potable use Do not use solder containing lead in the potable water lines If the space heating system requires water temperatures gre...

Page 10: ...r of the boiler jacket over the stack opening on the top panel of the boiler 8 Apply high temperature sealant see Table 6 to vent collar stack and install on the rear of the flue collector 9 Slip the...

Page 11: ...on Category I Exhaust Terminal Detail Side View Wall Figure 7 Venting and Combustion Air Options NOTE All views are shown from rear of heater Horizontal Intake Terminal Detail Combustion Air Side View...

Page 12: ...ollector IMPORTANT Maximum pipe length allowed is 50 feet 15m regardless of the number of elbows Maximum number of elbows allowed is 5 Vent pipe minimum clearance from combustible surfaces is 6 inches...

Page 13: ...t the installer may determine it should be higher depending on local conditions 5 Locate the terminal so the vent exhaust does not settle on building surfaces and other nearby objects Vent products ma...

Page 14: ...ke sure the ventilation air is not directed at the heater water piping or other equipment which could be damaged by freezing 2K 3 Conversion for Ducted Combustion Air The conversion to ducted combusti...

Page 15: ...to ground the metal parts of the heater Often plastic pipe or dielectric unions isolate the heater electrically Service and maintenance personnel who work on or around the heater may be standing on we...

Page 16: ...Page 16 LAARS HEATING SYSTEMS Figure 11 Wiring Diagram IGNITION SYSTEM 20 ON OFF SIZES 320 1000 NATURAL OR PROPANE...

Page 17: ...oiler for a long enough period to bring the water temperature within the range of the hi limit slowly back off the high limit setting until the boiler shuts off The main burners should re ignite when...

Page 18: ...the venturi throat tap yellow After installing the shutoff valves be certain they are closed Low Side of Manometer High Side of Manometer Venturi Inlet Tap Blue Venturi Throat Tap Yellow Gas Orifice T...

Page 19: ...concepts The following section describes this setup procedure 5 Leaving the positive side of the manometer connected to the venturi inlet tap blue connect the negative side of the manometer to the sh...

Page 20: ...regulator to track air pressure even when abnormal conditions occur such as blockage of the combustion air Before firing confirm that this tube and the venturi pressure switch tubes are in place and f...

Page 21: ...GAS ORIFICE UNFIRED ELEVATION OFFSET DIFFERENTIAL VENTURI FT PRESSURE PRESSURE DIFFERENTIAL inch W C inch W C inch W C SEA LEVEL 0 4 4 0 5 8 2000 0 4 3 7 5 3 4000 0 4 3 4 4 9 6000 0 4 3 2 4 6 8000 0 4...

Page 22: ...4B 2 4B 1 Inspection of the Heat Exchanger WARNING Improper installation or maintenance can cause nausea or asphyxiation from carbon monoxide in flue gases which could result in severe injury property...

Page 23: ...device 5 Low water cutoffs including flushing or float types Every six months Other maintenance requirements include 1 Periodic cleaning of filters when supplied 2 Lubrication of moving parts when app...

Page 24: ...ribes guidelines for checking the operation of electrical components installed on the heater Refer to the wiring diagram for correct connection locations 5C 1 General Troubleshooting This section desc...

Page 25: ...Mighty Max Volume Water Heater Page 25 Figure 19 Troubleshooting Chart...

Page 26: ...t Laars Heating Systems 480 S Service Road West Oakville Ontario Canada L6K 2H4 Telephone 905 844 8233 Item Description Part Number 1 Base Assembly 320M 20157801 400M 20157802 520M 20157803 625M 20157...

Page 27: ...Mighty Max Volume Water Heater Page 27 Front View Right Side View...

Page 28: ...Page 28 LAARS HEATING SYSTEMS Front View Rear View Right Side View Left Side View...

Page 29: ...erature E2101400 13 Display Temperature E2101600 14 Heat Exchanger Assy 2 pass Copper Tubes 520M 20256003 625M 20256004 775M 20256005 1000M 20256006 Item Description Part Number Heat Exchanger Assy 2...

Page 30: ...nt Safety Switch E2103000 37 Cover Plate For Gas Conn 320M 400M 20262701 520M 625M 20262702 775M 1000M 20262703 Item Description Part Number 38 Tile Assembly 320M 20255101 400M 20255102 520M 20255103...

Page 31: ...Mighty Max Volume Water Heater Page 31...

Page 32: ...05 529 2000 FAX 805 529 5934 20 Industrial Way Rochester NH 03867 603 335 6300 FAX 603 335 3355 480 S Service Road West Oakville Ontario Canada L6K 2H4 905 844 8233 FAX 905 844 2635 www laars com Lith...

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