User Guide

550-141-994 / 0905

WARNING

You must refer to the part number 550-141-986

and part number 550-141-996 to follow these instructions.

DO NOT proceed with the replacement procedure without having these manuals.

Failure to comply can result in severe personal injury, death or substantial property damage.

Weil-McLain Ultra Oil Boiler Manual

Beckett NX Burner manual

WARNING

These instructions must only be used by a qualified, installer/service technician. Read

completely before beginning the installation. Failure to follow all instructions can cause

severe personal injury, death or substantial property damage.

STOP! Read before proceeding:

WARNING

This product contains fiberglass wool and ceramic fiber materials. Airborne fibers from

these materials have been listed by the State of California as a possible cause of cancer

through inhalation. Apply special care when handling these materials, such as jacket

insulation and burner door refractory.

Installation Instructions:

UO-3 - Low Firing Rate Kit

Kit Part Number 386-902-007

DANGER

If the boiler has flue baffles installed, you must remove the baffles before changing to the

.80 GPH low firing rate. Failure to remove the baffles will result in flue gas condensation

causing corrosion damage to the boiler and vent system.

Oil-Fired Water Boiler

WARNING

Turn off fuel supply valves & service switch before changing burner nozzle. If boiler is hot

from operation, allow time to cool before proceeding. Failure to do so can cause severe

personal injury, death or substantial property damage.

WARNING

Indicates presence of hazards that can cause severe personal injury, death or substantial

property damage.

DANGER

Indicates presence of hazards that will cause severe personal injury, death or substantial

property damage.

NOTICE

Indicates special instructions on installation, operation or maintenance that are important

but not related to personal injury or property damage.

Contents of Kit

P/N 560-400-016, .65 GPH, 60° A, Delevan nozzle

P/N 591-221-187, Insulation blanket, 13.75 x 16.00

P/N 591-632-612, 4 oz. Bottle of water glass

P/N 550-141-994, Instructions installation combustion chamber blanket kit

PAGE 1
Oil-Fired Water Boiler Installation Instructions: UO-3 - Low Firing Rate Kit Kit Part Number 386-902-007 STOP! Read before proceeding: DANGER Indicates presence of hazards that will cause severe personal injury, death or substantial property damage. WARNING Indicates presence of hazards that can cause severe personal injury, death or substantial property damage.
PAGE 2
PROCEDURE Install Refractory Blanket 1. Open burner door and wipe any debris from bottom of heat exchanger. 2. Dry fit refractory blanket. Center blanket on chamber floor flush with front of heat exchanger. 16” dimension will lie left to right. Mark or note blanket position. 3. Remove blanket and spread water glass on heat exchanger where blanket will lie. 4. Install blanket as noted in step 2 and press firmly in place. 5. Visually check burner mounting door refractory and seal. 6.