Weil-McLain UO-3 CV manual Startup / Checkout, Startup/Checkout, Set combustion with instruments

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Startup / Checkout

!WARNING Explosion and Fire Hazard

Failure to follow these instructions could lead to equipment malfunc- tion and result in heavy smoke emission, soot-up, hot gas puff- back, fire and asphyxiation hazards.

yDo not attempt to start the burner when excess oil has accumulated in the appliance, the ap- pliance is full of vapor, or when the combustion chamber is very hot.

yDo not attempt to re-establish flame with the burner running if the flame becomes extin- guished during start-up, venting, or adjustment.

yVapor-Filled Appliance: Allow the unit to cool off and all vapors to dissipate before attempting another start.

yOil-Flooded Appliance: Shut off the electrical power and the oil supply to the burner and then clear all accumulated oil before continuing.

yIf the condition still appears unsafe, contact the Fire Department. Carefully follow their directions.

yKeep a fire extinguisher nearby and ready for use.

If the burner or control fails any of the following tests, recheck control wiring. If the burner or control still fails any tests, replace the control.

▪Check Safety Features

○Safe Start Check

1.Place a jumper across the cad cell terminals.

2.Refer to the steps for “Start up burner/set combustion” and have the system call for heat.

3.Burner must not start. Verify that the green light is on continuously and that the control remains in Standby mode.

4.End the call for heat and remove the cad cell jumper.

○Simulate Flame Failure and Ignition Failure

1.Refer to the steps for “Start up burner/set combustion” and have the system call for heat.

2.After flame is established and the burner igniter turns off, close the hand valve in the oil supply line.

3.At flame loss, the control will enter Recycle mode. Verify that the green light is flashing. The control will remain in Recycle for 60 seconds.

6104BAFG R0

Startup/Checkout

4.After the 60 second recycle period, the control will try to restart the system.

5.After the 15 second lockout time, the control will lock out the burner and the reset button will flash. Verify that the burner motor and igniter are off and that the burner oil solenoid valve (if used) is not energized.

6.Open the hand valve in the oil line.

7.Click the reset button and verify that the red light in the reset button shuts off and that the burner lights.

8.End the call for heat.

○Before leaving the installation, verify that all thermo- stat and boiler/furnace control wiring is correct. Con- sult heating appliance manual for directions.

Set combustion with instruments

!CAUTION OIL-BURNING EQUIPMENT SHALL BE CONNECTED TO

FLUES HAVING SUFFICIENT DRAFT AT ALL TIMES TO ENSURE SAFE AND PROPER OPERATION OF THE BURNER.

1.Allow the burner to run for approximately 5 to 10 minutes.

2.Set the stack or over-fire draft to the level specified by the appliance manufacturer.

yNatural Draft Applications; typically over-fire draft is -0.01” or -0.02” w.c.

yDirect V enting; typically may not require draft adjustment.

yHigh Eff ciency/Positive Pressure Appliances; also vary from traditional appliances (see manu- facturer’s recommendations).

3.Follow these four steps to properly adjust the burn- er:

Step 1: Adjust the air shutter/band until a trace of smoke is achieved.

Step 2: At the trace of smoke level, measure the CO2 (or O2) . This is the vital reference point for further adjustments. Example: 13.5% CO2 (2.6% O2)

Step 3: Increase the air to reduce the CO2 by

1.5to 2 percentage points. (O2 will be in- creased by approximately 2.0 to 2.7 per- centage points.) Example: Reduce CO2 from 13.5% to 11.5% (2.6% to 5.3% O2).

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Contents R02 01/09 To the Homeowner or Equipment Owner To the Professional, Qualif ed Installer or Service AgencyPotential for Fire, Smoke and Asphyxiation Hazards Table of Contents Information To Be Used Only By Qualif ed Service TechniciansFeature Hazard DefinitionsGeneral Information Indicates a hazardous situWeekly General Information To the OwnerBurner Specif cations General Specifications Air Tube Combination ATC codesInspect/Prepare Installation Site Inspect Chimney or Direct Vent System Tion HazardChamber Dimensions Clearances to burner and applianceCombustion chamber Burner retrof t- ting NozzleInspect/Prepare Installation Site Prepare the Burner Prepare the Burner Mount burner on applianceCheck/Adjust ‘Z’ Dimension ‘F’ heads Burner DimensionsCheck/Adjust ‘Z’ Dimension L1 & L2 Heads Installing the Oil Tank and Supply System Fuel Line Valves and FilterWire burner Burner installed at jobsiteSpecial wiring required with covered burners Frozen Plumbing Water Damage HazardWiring FeaturesBurner Controls GeniSys Model 7505 Control Fire or Explosion HazardBurner Controls Reset Button Operation Light Color On Continuously FlashingTypical Burner Wiring Control System FeaturesCad Cell Resistance Indicator Resetting From Restricted or Hard LockoutStart up burner/set combustion Hot Gas Puff-Back Heavy Smoke HazardCheck Safety Features Startup / CheckoutStartup/Checkout Set combustion with instrumentsPerform regular maintenance Shutting the Burner OffBlower wheel assembly Replace the blower wheelPage Description Warranty

UO-3 CV, UO-4 CV, UO-5 CV specifications

Weil-McLain is a well-respected name in the heating industry, recognized for its high-quality and efficient boiler systems. Among its notable offerings are the UO-3 CV, UO-4 CV, and UO-5 CV models, all of which showcase advanced engineering and innovative technology tailored for residential and commercial applications.

The UO-3 CV boiler is designed for mid-sized heating requirements, boasting a strong output capacity that balances efficiency with performance. It features a compact size, suitable for smaller installations, without sacrificing power. The boiler is equipped with a durable cast iron heat exchanger that provides excellent thermal efficiency and longevity, ensuring reliable operation over the years. Its easy access for maintenance also makes it a popular choice among HVAC professionals.

Moving to the UO-4 CV model, this boiler builds on the success of the UO-3 with an increased output capacity, making it ideal for larger residential or light commercial spaces. The UO-4 CV incorporates Weil-McLain’s advanced combustion technology, which optimizes fuel use and significantly reduces emissions. This model maintains a compact design while enhancing overall performance through improved heat transfer and reduced standby losses. The UO-4 CV's user-friendly features, including easy-to-use controls and a diagnostic system, streamline operational efficiency.

The UO-5 CV further solidifies Weil-McLain's commitment to excellence with its highest output among the three. This boiler is particularly suited for extensive heating demands, making it popular among larger commercial installations. The UO-5 CV also employs cutting-edge technology, including advanced controls for precise temperature regulation and an efficient system designed to minimize energy consumption. Its robust construction ensures it can handle heavy use while remaining reliable, even in challenging environments.

In summary, the Weil-McLain UO series, including the UO-3 CV, UO-4 CV, and UO-5 CV, represents a perfect blend of efficiency, innovation, and reliability. All models utilize durable materials, advanced engineering, and state-of-the-art technologies that define Weil-McLain's reputation for quality in hydronic heating solutions. Whether for residential or commercial applications, these boilers serve as dependable sources of heat, catering to various needs while maintaining energy efficiency and lower emissions.
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