Weil-McLain GOLD DV WATER BOILER manual VI Field wiring, Electrical installation must comply with

Page 40

GOLD GV Water boiler series 3 — manual

VI Field wiring

Electrical installation must comply with:

National Electrical Code and any other national, state, provincial or local codes or regulations.

In Canada, C.S.A. C22.1 Canadian Electrical Code Part 1, and any local codes.

Wiring must be N.E.C. Class 1.

If original wiring as supplied with boiler must be replaced, use only type 90 °C wire or equivalent.

Boiler must be electrically grounded as required by National Electrical Code ANSI/NFPA 70-latest edition.

Wiring connections

Thermostat(s)

Install on inside wall away from influences of drafts, hot or cold water pipes, lighting fixtures, television, sunrays, or fireplaces.

Follow instructions with thermostat. If it has a heat anticipator, set heat anticipator in thermostat to match power requirements of equipment connected to it (ignition control and gas valve, zone valve contacts, etc.). Wiring diagram on boiler gives setting for standard equipment (ignition control and gas valve).

Thermostat wires are labeled "T-T" on boiler. Remove label before connecting as shown in Figure 18. Route this wiring through the hole in the upper left side jacket.

For zoned systems, substitute the zone valve end switches or circulator relay contacts for the thermostat contact shown in Figure 18.

When using three-wire zone valves, take care to avoid miswiring. This can impose an additional 24 volts across the boiler control circuitry. The boiler control module will sense this problem and lockout. It will flash the POWER and TSTAT CIRC lights to indicate the problem. See label on control module for explanation of lockout conditions. To verify before connecting to boiler, disconnect field thermostat wires at boiler. Place a voltmeter across the leads. Then watch the voltmeter as each zone is activated (by activating zone thermostat). There should never be a voltage reading across the two leads coming to the boiler. If you see a voltage reading, one or more zone valves is miswired.

Junction Box (furnished)

Mount the 2 x 4 junction box on the left side of the boiler as shown on page 3 of this manual and in other illustrations.

Fused disconnect or service switch (15 amp. recommended) may be mounted on this box. For those installations with local codes which prohibit installation of fused disconnect or service switch on boiler, install a 2 x 4 cover plate on the boiler junction box and mount the service switch remotely as required by the code.

Connect 120 VAC power wiring as shown in Figure 18.

40

Part number 550-141-850/0699

Page 39 Page 41
Image 40
Page 39 Page 41
Contents Gold GV How it works Gold GV Water boiler Series Hazard definitions Installer User Please read before proceedingBoiler operation When servicing boilerBoiler water Contents Contents Ia Prepare boiler location overview Overview of this sectionInstallations must follow these codes Ib Prepare boiler location codes & altitudeIc Prepare boiler location clearances Clearance optionsLarge space Small spaceResidential garage installation PrecautionsFlooring and foundation FlooringRemoving from existing vent Id Prepare boiler location vent systemGV special vent system Ie Prepare boiler location contamination Air contaminationIf Prepare boiler location air openings Special considerations GV in small space less than aloneIIa Prepare boiler overview IIb Prepare boiler vent starter tee & drainScrew hole Base rail Insert Cpvc elbow Plate installation IIc Prepare boiler orifice plateNatural gas PropaneBottom side of boiler front section When required IId Prepare boiler high altitude kitAltitudes above 5,500 feet only White Hose RedIIe Prepare boiler place in position Rotate IIf Prepare boiler pressure test Perform hydrostatic pressure testPrepare boiler for test Fig Fill and pressure testPiping connections for hydrostatic test IIIa Water piping overview For heating system with See pages 27 30Install relief valve IIIb Water piping relief valveIIIc Water piping boiler connections Supply & return connectionsAir separator Expansion tankPiping closed IIId Water piping all systems Zoning with circulatorsIIIe Water piping baseboard system Baseboard system pipingIIIf Water piping radiator system Radiator system pipingIIIg Water piping single-zone radiant or heat pump system IIIh Water piping multi-zone radiant system Outdoor reset controlMulti-zone radiant heating system piping IIIi Water piping snow melt system Manual bypass valves for fixed temp operation onlyIIIj Water piping water chiller systems Water chiller systemsIV Venting and combustion air Gas piping Connecting gas supply piping to boilerPropane Gas Feet VI Field wiring Electrical installation must comply withWiring connections ThermostatsField wiring Factory wiring Freeze protection when used VIIa Start-up overviewVIIb Start-up preparation Verify water chemistryVIIb Start-up preparation Verify gas/air orifice plateCheck for gas leaks Fill the system with waterVIIc Start-up read Section VIId Start-up to operate boilerPerform final checks before starting boiler Start the boilerVIId Start-up operate boiler VIIe Start-up if boiler doesn’t startVIIf Start-up altitude over 5,500 feet only Connect and adjust manometerCheck Gas Control Set Point At Least Inches VIIIa Check-out procedure overview Check-out procedure checklistVIIIb Check-out procedure checklist Shows the ladder wiring diagram for the GV series 3 boiler IXa Operation overviewIXb Operation sequence StepsIXb Operation wiring diagrams Ladder diagram legendGCM For Your Safety Read Before Operating IXc Operation lighting instructionsWhite-Rodgers gas valve model 36E Xa Service and maintenance overview Xb Service and maintenance schedule Service technicianXc Service & maintenance annual start-up Annual start-up only by qualified service technicianStart-up Xc Service & maint. annual start-upcont Annual start-up check/testGauges Expansion tankIgniter Boiler relief valve Annual start-up owner reviewReview with owner Condensate drain line Check valve assembly To remove the blower assembly Igniter XIa Troubleshooting overview Before troubleshooting XIb Troubleshooting proceduresCheck the following XIc Troubleshooting air pressure switch Checking the air pressure switchXId Troubleshooting servicing tips Blower HousingIgniter Gas ValveXIe Troubleshooting control module Control ModulePower XIf Troubleshooting common problems Symptom Common Causes Possible CorrectionsSymptom Common Causes Possible Corrections XIg Troubleshooting GCM lights Chart 1 Troubleshooting Power light statusChart 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 XIIb Replacement parts accessory bag Water trim bag assembly #1XIIc Replacement parts section assembly Description Model Weil-McLain Number Part number85041 XIId Replacement parts jacket assembly 422-200-22885042 XIIe Replacement parts Blower assembly 382-200-340Vent starter tee not included XIIf Replacement parts trim assembly Description Weil-McLain Number Part number85048 XIIg Replacement parts interior panel Interior panel Xiii Dimensions and ratings NumberDOE Gold GV Water boiler Series
Top Page Image Contents