WEIL-McLAIN AB-80 NG Aquabalance Series 2 Wall Mount Gas-Fired Water Boiler
REPLACEMENT PART NUMBERS
WM Technologies part numbers are found in this manual and in Weil-McLain Boilers and Controls Repair Parts Lists.
WHEN OPERATING THE BOILER ON PROPANE GAS
WARNING: ALL boilers must be converted in order to operate with propane gas.
WARNING:Failure to adhere to these guidelines can result in severe personal injury, death or substantial property damage.
Obtain parts only through WM Technologies
Replacement parts must be purchased through a local WM Technologies 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.
The boiler contains ceramic fiber materials
The boiler contains ceramic fiber materials. Use care when handling these materials per instructions on page 86 of this manual. Failure to comply could result in severe personal injury.
Reinstall jacket door
Inspect boiler jacket door front of cabinet and reinstall boiler jacket door after start or servicing. The boiler jacket 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 jacket door securely fastened could result in severe personal injury or death.
BEFORE SERVICING or MAKING CONNECTIONS
ALWAYS TURN POWER OFF TO THE BOILER TO PREVENT ELECTRICAL SURGES, WHICH CAN DAMAGE BOILER COMPONENTS.
Label wires
Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation.
Replacement parts
| Item | Name | Part Number |
| 100 | Heat Exchanger | 640-000-118 |
| 110 | Flue Sensor Temperature | 640-000-011 |
| 120 | Blower | 640-000-081 |
| 130 | Blower Gasket | 640-000-021 |
| 140 | Ignitor | 640-000-109 |
| 150 | Central Heat Exchanger Insulation | 640-000-010 |
| 160 | Burner | 640-000-012 |
| 170 | Burner Gasket Set Burner Gasket Premix 1 Piece Burner Cover Gasket 1 piece | 640-000-013 |
| 180 | Burner Cover | 640-000-016 |
| 190 | Inspection Glass | 640-000-015 |
| 200 | Kit – Natural Gas Conversion | 640-000-082 |
| 210 | Kit – Liquefied Petroleum (Propane) Gas Conversion | 640-000-133 |
| 220 | Gas Valve VK8205V | 640-000-037 |
| 230 | Circulator UPS2578 | 640-000-086 |
| 240 | Air Separator | 640-000-087 |
| 250 | Water Pressure Switch | 640-000-019 |
| 260 | DHW Inlet Pipe | 640-000-098 |
| 270 | Water Filter | 640-000-027 |
| 280 | Valve 3-Way | 640-000-088 |
| 285 | Valve 3-Way Motor | 640-000-134 |
| 290 | 3-Way Valve-PHE Pipe | 640-000-095 |
| 300 | N/R Valve Fitting | 640-000-030 |
| 310 | Flow Meter | 640-000-084 |
| 320 | Plate Exchanger PFH30 | 640-000-089 |
| 330 | CH Temperature Probe DP | 640-000-034 |
| 340 | CH Temperature Probe US | 640-000-035 |
| 350 | DHW Temperature Probe US | 640-000-036 |
| 360 | Relief Valve 3/4” | 640-000-038 |
| 370 | NPT Adapters | 640-000-090 |
| 380 | Gasket Set O-Ring 167 ID 63.5mm X 3.53mm NBR 5 pcs Gasket OD 24 X ID17mm X 2mm 10 pcs O-Ring 21.89mm X 2.62mm EPDM 5 pcs Gasket OD18.5 X ID12.5mm X 2mm 10 pcs O-Ring 23.81mm X 2.62mm EPDM 5 pcs Gasket OD14.5 X ID8.5mm X 2mm 10 pcs Gasket OD 12.5mm x ID 8.5mm Silic. 10 pcs Gasket OD45 X ID33.5mmX2mm EPDM 10 pcs | 640-000-101 |
| 390 | Condensate Drain Trap | 640-000-073 |
| 400 | Vent Adapters (2 adapters in kit) | 640-000-107 |
| 410 | Gaskets – Vent Adapter (2 gaskets in kit) | 640-000-108 |
| 420 | Wall Mount Bracket | 640-000-044 |
| 430 | Outdoor Temperature Sensor | 640-000-043 |
| 440 | Heat Exchanger Flow Pipe | 640-000-091 |
| 450 | CH – Return Pipe | 640-000-097 |
| 460 | Bypass Pipe | 640-000-093 |
| 470 | Flow Meter PHE Pipe | 640-000-099 |
| 480 | DHW Outlet Pipe | 640-000-096 |
| 490 | Gas Pipe | 640-000-100 |
| 500 | Heat Exchanger Return pipe | 640-000-092 |
| 510 | CH Flow Pipe | 640-000-094 |
| 520 | Gasket – Heat Exchanger Vent | 640-000-136 |
