Weil-McLain 550-141-850/0599, GOLD DV WATER BOILER Chart 4 Pres Switch & Power lights flashing

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• Installation • Start-Up • Parts • Maintenance

CHART 4 — PRES SWITCH & POWER lights flashing

Electrical shock hazard — Wherever you see ▲TURN OFF POWER▲, follow the instructions. Failure to follow instructions could result in severe personal injury, death or substantial property damage.

•Reset boiler control by turning off power at service switch or turning down thermostat for at least 45 seconds.

•Thermostat should call for heat and appropriate zone valves open.

Does blower motor operate?

No

Yes

Wait 45 seconds.

Does blower motor operate?

No		Yes

Is blower wheel turning at speed of blower motor?

No	Yes

•Remove BLOWER plug (Figure 34, Item 3) from plug receptacle of control module.

•Place voltmeter leads across the 120 VAC N and 120 VAC H pins of the BLOWER receptacle.

Does the voltmeter indicate 120 VAC?

No	Yes

▲TURN OFF POWER▲ at service switch.

Does blower wheel turn freely by hand?

No	Yes

▲TURN OFF POWER▲ at service switch.

•Properly position blower wheel on blower motor shaft and tighten set screw. (Or replace blower housing assembly.)

•Retest.

Wait 5 minutes.

Is purge light flashing?

No		Yes



Properly position

blower wheel on			Replace blower
blower motor shaft			motor. (Also check
and tighten set screw.			blower housing
(Or replace blower			assembly. Replace if
housing assembly.)			necessary.)
Retest.			Retest.

•Remove one of the red wires connected to the pressure switch.

•Check continuity across the switch terminals.

Does the ohmmeter indicate the switch is closed?

No		Yes

Boiler should be in normal operating sequence.

Observe operation until thermostat is satisfied and blower has completed its post- purge cycle.

Check condensate trap. Is there condensate present?

	No					Yes


Are vent or combustion air						Drain condensate.
Are vent or combustion air						Retest.
passages blocked?						Retest.
passages blocked?

No			Yes

Replace control module. Retest.

Check air pressure switch per manual Section XI. Replace if necessary. Retest.

Clear passages and recycle boiler. Recheck boiler operation.

Part number 550-141-850/0699

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Contents Gold GV How it works Gold GV Water boiler Series Please read before proceeding Hazard definitions Installer UserBoiler water When servicing boilerBoiler operation Contents Contents Overview of this section Ia Prepare boiler location overviewIb Prepare boiler location codes & altitude Installations must follow these codesClearance options Ic Prepare boiler location clearancesLarge space Small spacePrecautions Residential garage installationFlooring and foundation FlooringGV special vent system Id Prepare boiler location vent systemRemoving from existing vent Air contamination Ie Prepare boiler location contaminationIf Prepare boiler location air openings GV in small space less than alone Special considerationsIIb Prepare boiler vent starter tee & drain IIa Prepare boiler overviewScrew hole Base rail Insert Cpvc elbow IIc Prepare boiler orifice plate Plate installationNatural gas PropaneBottom side of boiler front section IId Prepare boiler high altitude kit When requiredWhite Hose Red Altitudes above 5,500 feet onlyIIe Prepare boiler place in position Rotate Perform hydrostatic pressure test IIf Prepare boiler pressure testPrepare boiler for test Fig Fill and pressure testPiping connections for hydrostatic test For heating system with See pages 27 30 IIIa Water piping overviewIIIb Water piping relief valve Install relief valveSupply & return connections IIIc Water piping boiler connectionsAir separator Expansion tankPiping closed Zoning with circulators IIId Water piping all systemsBaseboard system piping IIIe Water piping baseboard systemRadiator system piping IIIf Water piping radiator systemIIIg Water piping single-zone radiant or heat pump system Multi-zone radiant heating system piping Outdoor reset controlIIIh Water piping multi-zone radiant system Manual bypass valves for fixed temp operation only IIIi Water piping snow melt systemWater chiller systems IIIj Water piping water chiller systemsIV Venting and combustion air Propane Gas Connecting gas supply piping to boilerGas piping Feet Electrical installation must comply with VI Field wiringWiring connections ThermostatsField wiring Factory wiring VIIa Start-up overview Freeze protection when usedVIIb Start-up preparation Verify water chemistryVerify gas/air orifice plate VIIb Start-up preparationCheck for gas leaks Fill the system with waterVIId Start-up to operate boiler VIIc Start-up read SectionPerform final checks before starting boiler Start the boilerVIIe Start-up if boiler doesn’t start VIId Start-up operate boilerCheck Gas Control Set Point Connect and adjust manometerVIIf Start-up altitude over 5,500 feet only At Least Inches Check-out procedure checklist VIIIa Check-out procedure overviewVIIIb Check-out procedure checklist IXa Operation overview Shows the ladder wiring diagram for the GV series 3 boilerSteps IXb Operation sequenceLadder diagram legend IXb Operation wiring diagramsGCM IXc Operation lighting instructions For Your Safety Read Before OperatingWhite-Rodgers gas valve model 36E Xa Service and maintenance overview Service technician Xb Service and maintenance scheduleAnnual start-up only by qualified service technician Xc Service & maintenance annual start-upStart-up Annual start-up check/test Xc Service & maint. annual start-upcontIgniter Expansion tankGauges Review with owner Annual start-up owner reviewBoiler relief valve Condensate drain line Check valve assembly To remove the blower assembly Igniter XIa Troubleshooting overview Check the following XIb Troubleshooting proceduresBefore troubleshooting Checking the air pressure switch XIc Troubleshooting air pressure switchBlower Housing XId Troubleshooting servicing tipsIgniter Gas ValveControl Module XIe Troubleshooting control modulePower Symptom Common Causes Possible Corrections XIf Troubleshooting common problemsSymptom Common Causes Possible Corrections Chart 1 Troubleshooting Power light status XIg Troubleshooting GCM lightsChart 2 Tstat Circ & Power lights flashing Chart 3 Limit & Power lights flashing Chart 4 Pres Switch & Power lights flashing Chart 5 Flame & Power lights flashing Chart 6 Tstat Circ light flashing and Power light on steady Chart 7 Limit light flashing and Power light on steady Is thermostat circuit closed continuity across wires? XIIa Replacement parts overview Water trim bag assembly #1 XIIb Replacement parts accessory bagDescription Model Weil-McLain Number Part number XIIc Replacement parts section assembly85041 422-200-228 XIId Replacement parts jacket assembly85042 382-200-340 XIIe Replacement parts Blower assemblyVent starter tee not included Description Weil-McLain Number Part number XIIf Replacement parts trim assembly85048 XIIg Replacement parts interior panel Interior panel Number Xiii Dimensions and ratingsDOE Gold GV Water boiler Series