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Weil-McLain WMB-155C User Manual

Weil-McLain WMB-155C
100 pages
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Boiler Manual
Part number 550-100-305/1016
This manual must only be used by a qualified heating installer/service technician. Failure to comply could result in
severe personal injury, death or substantial property damage.
When calling or writing about the boiler— Please have boiler model number from the boiler rating label.
Quick Start Guide
Pages 3 & 4
Aqua Balance
WMB-155C
Wall Mount Gas-Fired
Combination Boiler – Heating and Domestic Hot Water
• Installation
• Startup
• Maintenance
• Parts

Table of Contents

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Weil-McLain WMB-155C Specifications

General IconGeneral
BrandWeil-McLain
ModelWMB-155C
CategoryBoiler
LanguageEnglish

Summary

Boiler Manual

Quick Start Guide

Overview of initial boiler setup and default settings.

Safety and Precautions

General Safety Warnings

Critical safety information for installers and users regarding operation and maintenance.

Prepare Boiler Location

Clearances and Air Openings

Specifies required clearances from combustibles and air opening requirements.

Prepare Boiler

Wall Mounting Requirements

Details for securely mounting the boiler to the wall structure.

Hydrostatic Pressure Testing

Fill and Pressure Test Procedures

Steps for filling the system with water and performing a hydrostatic pressure test.

Converting to Propane

Propane Conversion Kit Installation

Procedures and part numbers for converting the boiler to propane fuel.

Gas Piping

Sizing Gas Lines

Guidelines for sizing natural gas and propane piping based on input and length.

Venting and Air Piping

Direct Vent Installation Options

Details on direct vent options, including sidewall and vertical terminations.

Vent Termination Requirements

Minimum Clearances and Prohibited Locations

Specifies minimum distances and locations where vents must not terminate.

Startup Procedures

System Cleaning and Water Chemistry

Steps for flushing the system, verifying water chemistry, and adding antifreeze.

Startup Final Checks

Test Mode Operation

Procedures for operating the boiler in test mode for checks and adjustments.

Troubleshooting

Error Code Diagnosis

List and explanation of error codes indicating boiler faults and conditions.

Maintenance

Burner Inspection and Cleaning

Procedures for accessing, removing, and inspecting the boiler's burner.

Replacement Parts

Boiler Components and Kits

Lists various replacement parts, kits, and accessories for the boiler.

Boiler Ratings

AHRI Certified Ratings and Notes

Details boiler performance ratings, efficiency, and important notes.

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