Weil-McLain 550-110-260/02002 manuals
Household Appliance > Boiler
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Weil-McLain 550-110-260/02002 Manual
60 pages 3.18 Mb
How it works . . . 2 6 1aInstallations must follow these codes: Before locating the boiler, check the following: 7 Prepare boiler location clearances1bResidential garage installation Provide the following clearances: Flooring and foundation Prepare boiler location vent systemVent system Vent termination and combustion air supply 8 1cRemoving from existing vent CGs special vent systemWhen removing boiler from existing common vent system: Prepare boiler location contamination 9 1dAir contamination 10 Prepare boiler location air openings1eSpecial considerationsTight construction Exhaust fans and air movers Motorized air dampers CGs combustion air optionsUsing inside air direct exhaust vent Using outside air direct vent Sizing air openings Place boiler/crate near position 12 Prepare boiler placement & setup2aInspect orifices and burners Orifice replacement procedureLocation Natural gas Propane gas Prepare boiler pressure testPrepare boiler for test Fill and pressure test Drain and remove fittings 13 2bPerform hydrostatic pressure test Water piping general information 14 3a23 3fsystem-bypass (alternate) piping for converted gravity (or steam) systems Water piping refrigeration system3g 24 Gas piping5Connecting gas supply piping to boiler Venting and combustion air4 25 Gas piping 26 Field wiring6Thermostat Junction Box (furnished) Wiring connections Electrical installation must comply with: Determine if water treatment is needed 27 Start-up preparation7aFill the system with waterVerify water chemistry Freeze protection (when used) Check for gas leaks 28 Start-up operate boiler7bInspect system water piping Start-up preparation continued7aFinal check before starting boiler Start the boiler Check system and boiler Inspect base insulation 29 Start-up operate boiler continued7bCheck burner flamesPilot burner flame Main burner flame Start-up if boiler doesnt start . . .7c 30 Check-out procedure checklist8Installation and service certificate 31 Operation sequence9a34 Operation lighting instructions9cFOR YOUR SAFETY READ BEFORE OPERATING TO TURN OFF GAS TO THE APPLIANCE OPERATING INSTRUCTIONSTable 5 Service and maintenance schedules 35 Service and maintenance schedule10aService technician ANNNUAL START-UPOwner maintenanceInspect: Service: Start-up: Check/test: Review: 36 Service & maintenance annual start-up10bReported problems Boiler area Air openings Flue gas vent system (and air piping) Pilot and main burner flames Water piping 37 Inducer motor Oiled bearing circulators Burners, base and inlet air box Boiler heating surfaces Condensate drain system 38 Service & maint. annual start-up continued10b Gas piping Cold fill and operating pressures Air vents and air elimination Limit controls and cutoffs Expansion tank 39 Boiler relief valve40 Service & maint. annual start-up10b 41 Troubleshooting procedure11aBefore troubleshooting: VERIFY PROPER OPERATION AFTER SERVICING. Check the following: 42 Troubleshooting air pressure switch11bCheck pressure switch setting Return to normal operation Troubleshooting air pressure reading 43 Troubleshooting control module11cControl indicator lights non-lockout modesTroubleshooting the control module Control indicator lights lockout modesPart number 550-110-260/0200 44 Troubleshooting control module continued11cFigure 25 Control module connectionsPRESS SWITCH LIMIT TSTAT CIRC POWER FLAME 45 CHART 1 TroubleshootingPOWER light statusIs POWERlight off? Figure 25, item 3 Does voltmeter indicate120 VAC? Figure 25, item 2, Does voltmeter indicate120 VAC? Does voltmeter indicate24 VAC? Is POWERlight flashing now? Is POWER light... Figure 25, item 5, 46 CHART 2 TSTAT CIRC & POWERlights flashingDid you find a voltage across the two external thermostat circuit wires? and Do the lights still flash? 47 CHART 3 PRESS SWITCH & POWER lights flashingDoes the ohmmeter indicate the switch is closed? Does inducer motor operate? light flashing? Is Does the voltmeter indicate 120 VAC? Figure 25, Item 6, page 44 Are vent or combustion air passages blocked? Does inducer motor operate? Is pilot burning during prepurge period? 48 CHART 4 FLAME & POWER lights flashingAre FLAME and POWER lights flashing? and Do lights still flash? Are manual main shutoff valve and gas valve open? Are FLAME &POWER lights flashing? Figure 25, item 8, page 44 Does light flash now? Is 24 VAC present there? Is flame signal at least 1.0 microamp? Is gas present at gas valve inlet and within above range? 50 CHART 6 PRESS SWITCH light flashing and POWERlight on steadyFigure 25, Item 6, page 44 light flashing? Is Does the voltmeter indicate 120 VAC? Does the ohmmeter indicate the switch is closed? Are vent or combustion air passages blocked? Does blower motor operate? 51 CHART 7 Insufficient heat or no heat to system (POWERlight on steady)Is thermostat circuit closed (continuity across wires)? light on? Is Are limit switch contacts closed? Is Does voltmeter show 120 VAC across pins? Is vent or combustion air piping free of blockage? Figure 25, Item 7, page 44 Is boiler System circulator operating? light on? Are limit switch contacts closed? Check rollout switch continuity is switch closed? 52 Replacement parts12a58 Dimensions13aFigure 31 Dimensional drawing RatingsTable 7 Boiler ratings Notes DOE 59 13b
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