Specifications

Part number 550-100-090/0809
g a s -f i r e d w a t e r b o i l e r — Boiler Manual
112
Replacement parts
Replacement parts must be purchased through a local Weil-McLain distributor. When ordering,
specify boiler model and size and include description and part number of replacement part.
Results from using modified or other manufactured parts will not be covered by warranty and
may damage boiler or impair operation.
Weil-McLain part numbers are found in Weil-McLain Boilers and Controls Repair Parts Lists.
The boiler contains ceramic ber materials. Use care when handling these materials per
instructions on page 93 of this manual. Failure to comply could result in severe personal in-
jury.
Reinstall boiler jacket front door after startup or servicing
Inspect boiler jacket front door gaskets and reinstall boiler jacket front door after start or
servicing. The boiler front door must be securely fastened to the boiler to prevent boiler from
drawing air from inside the boiler room. This is particularly important if the boiler is located
in the same room as other appliances. Failure to keep the door securely fastened could result in
severe personal injury or death.
Propane conversion kits and instructionsFigure 116
The conversion kits listed below are only for use with Ultra Series 3 boilers. For series 1 or series 2
boilers, refer to the boiler manual or contact Weil-McLain for the correct parts.
Natural to propane conversion — SERIES 3 BOILERS ONLY
(not required for Ultra-399 — adjustment is made with throttle screw, not with orifice)
Sea level (to 5,500 feet altitude) High altitude (above 5,500 feet)
Model Kit part # Kit location Instructions Model Kit part # Kit location Instructions
Ultra-80
383-501-020
SPECIAL
ORDER
In kit only
Ultra-80LP 383-500-644
SPECIAL
ORDER
See page 44
or kit
Ultra-105
540-100-001
Supplied with boiler
See page 44 Ultra-105 383-500-645
SPECIAL
ORDER
See page 44
or kit
Ultra-155
383-500-115
Supplied with boiler
See page 45 Ultra-155 383-500-646
SPECIAL
ORDER
See page 45
or kit
Ultra-230
383-500-120
Supplied with boiler
See page 45 Ultra-230 383-500-647
SPECIAL
ORDER
See page 45
or kit
Ultra-299
540-202-832
Supplied with boiler
See page 45 Ultra-299 383-500-394
SPECIAL
ORDER
See page 45
or kit
Propane to natural conversion
Ultra-80
383-501-021
SPECIAL
ORDER
In kit only
Contact factory
Boilers marked with this symbol require special installation procedures. Do not use the instructions in this manual — use
only the instructions supplied in the conversion kit.