Weil-McLain UO-4 CV, UO-5 CV manual Mounting Burner in Appliance, WARNING Oil Leak and Fire Hazard

Mount burner on appliance

Figure 7. – Mounting Burner in Appliance Figure 8. – Inside Tank Gravity Feed System

If space between burner air tube and opening exceeds 1/2 inch, pack burner opening with ce- ramic fiber refractory.

Tilt down 2o

SK8745

Installing the Oil Tank and Supply System

!WARNING Oil Leak and Fire Hazard

Install the oil tank following applicable stan- dards in the U.S. by referring to the latest edition of NFPA 31 or CSA-B139 & CSA-B140 in Canada, and all authorities having jurisdic- tion.

!CAUTION Do Not Use Tef on Tape

Damage to the pump could cause impaired burner operation, oil leakage and appliance soot-up.

yNever use Teflon tape on fuel oil fittings.

yTape fragments can lodge in fuel line compo- nents and fuel unit, damaging the equipment and preventing proper operation.

yUse oil-resistant pipe sealant compounds.

Note: to determine the proper fuel line size, refer to the fuel pump manufacturer’s instructions pro- vided with the burner. Refer to Figure 8 or Figure 9 for typical installation layouts.

Fuel Line Valves and Filter

Install two high quality, oil duty rated, fusible handle design shutoff valves in accessible loca- tions on the oil supply line. Locate one close to the tank and the other close to the burner, upstream of the filter for service access.

Install a generous capacity filter inside the building between the fuel tank shutoff valve and the burner, locating both the filter and the valve close to the burner for ease of servicing. Filter should be rated for 50 microns or less.

Figure 9. – Outside Buried Tank-Lift System

NOTICE To further protect the fuel supply sys- tem and reduce nozzle orifice plugging with firing rates below 0.75 gph, a dual filtration system can be installed. This typically consists of a 50 micron primary filter, located near the fuel tank and a secondary filter rated for at least 10 microns located near the burner.

Fuel supply level with or above burner –

!WARNING Do Not Install By-pass Plug with 1-Pipe System

Failure to comply could cause Immediate pump seal failure, pressurized oil leakage and the potential for a fire and injury hazard.

yThe burner is shipped without the by-pass plug installed.

yInstall the by-pass plug in two-pipe oil supply systems ONLY.

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