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Columbia MCB125 - User Manual

Columbia MCB125
28 pages
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P/N 37612101, Rev. B [02/09]
Co l u m b i a bo i l e r Co m p a n y
Main ofces and Factory: Pottstown, PA
MCB SERIES
Cast Iron Gas Fired Boilers
For Forced Hot Water
INSTALLATION, OPERATION &
MAINTANANCE MANUAL
MODEL NUMBERS:
MCB50 MCB75 MCB100
MCB125 MCB150 MCB175
MCB200 MCB250 MCB300

Other manuals for Columbia MCB125

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Summary

Installation and Operating Instructions

Safety Symbols and Warnings

Defines symbols for hazardous situations and varying risk levels.

Important Pre-Installation Guidance

Crucial pre-installation instructions to be read thoroughly before commencing.

Ratings and Data - Natural Gas & Propane Gas

Boiler Specifications and Performance Data

Details boiler input/output ratings, net capacity, burner count, and water content.

Installation Procedure

General Installation Requirements and Clearances

Outlines conformity to codes, placement, clearances, and utility connections for safe installation.

Ventilation and Combustion Air Requirements

Combustion Air Requirements per Model

Specifies minimum air requirements for unconfined and confined spaces based on boiler model.

Providing Adequate Air Supply

Details methods for providing sufficient air for combustion and ventilation in various spaces.

Connecting Supply and Return Piping

Piping for Refrigerated Systems

Guidance on piping connections when the boiler is used with refrigerated systems.

System Filling and Pressure Requirements

Instructions on filling the hot water boiler system and maintaining minimum pressure.

Connecting Supply and Return Piping Methods

Bypass Piping for Condensation Control

Explains bypass piping options for preventing condensation and adjusting return water temperature.

Connecting Supply and Return Piping Configurations

Single Zone System with DHW Priority

Diagram and explanation for a single zone system prioritizing domestic hot water.

Multizone System with Circulators and DHW Priority

Diagram and explanation for a multizone system with circulators and DHW priority.

Connecting Supply and Return Piping Variations

Multizone with Zone Valves & DHW Priority (Circulator)

Diagram for multizone systems using zone valves and circulators with DHW priority.

Multizone with Zone Valves & DHW Priority (Zone Valve)

Diagram for multizone systems using zone valves with DHW priority.

Vent Installation Guidelines

Vent Pipe Installation Requirements

Rules for vent pipe slope, support, material, and connections to chimney.

Vent System Modification - Boiler Removal

Procedure for safely removing a boiler from an existing common venting system.

Vent System Modification and Damper Use

Vent Damper Installation Procedure

Steps for installing a vent damper, including wiring and placement.

Vent Damper Operation and Placement

Guidance on proper operation and placement of the vent damper.

Connecting Gas Service

Gas Piping and Pressure Requirements

Details on connecting gas service, pipe sizing, drip legs, and leak testing.

Electrical Section Overview

Thermostat Installation Guidelines

Guidance on proper thermostat placement and initial setup for optimal performance.

Wiring Diagram - 24 V Standing Pilot

24 V Standing Pilot System Connections

Schematic illustrating electrical connections for a 24V standing pilot ignition system.

Wiring Diagram - Intermittent Ignition

Intermittent Ignition System Connections

Schematic illustrating electrical connections for an intermittent ignition system.

Lighting Instructions - Intermittent Pilot

Intermittent Pilot System Lighting Procedure

Step-by-step guide for safely lighting and operating the intermittent pilot system.

Lighting Instructions - Continuous Pilot

Continuous Pilot System Lighting Procedure

Step-by-step guide for safely lighting and operating the continuous pilot system.

Normal Sequence of Operation

Boiler Operation Sequence and Safety Features

Describes the sequence of events from thermostat activation to burner operation and safety shutdowns.

General Instructions for Boiler Care

Pre-Seasonal Inspection and Maintenance

Guidance on checks, cleaning, and inspections for efficient and safe operation.

General Instructions for Boiler Care

Flue Passageway Cleaning and Inspection

Procedure for cleaning the boiler's flue gas passageways for optimal performance.

Burner and Pilot Flame Adjustment and Check

Instructions for checking and adjusting burner and pilot flames for proper combustion.

Checking and Adjusting Gas Input Rate

Gas Input Rate Adjustment and Verification

Procedure for adjusting and verifying the boiler's gas input rate for efficient operation.

Safety Control Circuit Testing Procedures

How to test the pilot and high limit controls for proper safety function.

Replacement Parts - Base Components

Base Part Identification and Numbers

List of part numbers for base components including burner tubes, bases, and doors.

Replacement Parts - Heat Exchanger Components

Heat Exchanger Part Identification and Numbers

List of part numbers for heat exchanger components like nuts, tie rods, nipples, and assembled units.

Replacement Parts - Jacket Components

Jacket Part Identification and Numbers

List of part numbers for jacket panels, draft deflectors, and access panels.

Replacement Parts - Pilot Assemblies

Pilot Assembly Part Identification and Numbers

List of part numbers for spark and continuous pilot assemblies, including brackets and tubing.

Replacement Parts - Piping and Controls

Piping and Control Part Identification and Numbers

List of part numbers for various pipes, fittings, wiring harnesses, and control devices.

Rollout and Spill Switch Components

Rollout and Spill Switch Part Identification

Identification of parts for the temperature sensor bracket and the fixed temperature thermo (rollout switch).

Summary

Installation and Operating Instructions

Safety Symbols and Warnings

Defines symbols for hazardous situations and varying risk levels.

Important Pre-Installation Guidance

Crucial pre-installation instructions to be read thoroughly before commencing.

Ratings and Data - Natural Gas & Propane Gas

Boiler Specifications and Performance Data

Details boiler input/output ratings, net capacity, burner count, and water content.

Installation Procedure

General Installation Requirements and Clearances

Outlines conformity to codes, placement, clearances, and utility connections for safe installation.

Ventilation and Combustion Air Requirements

Combustion Air Requirements per Model

Specifies minimum air requirements for unconfined and confined spaces based on boiler model.

Providing Adequate Air Supply

Details methods for providing sufficient air for combustion and ventilation in various spaces.

Connecting Supply and Return Piping

Piping for Refrigerated Systems

Guidance on piping connections when the boiler is used with refrigerated systems.

System Filling and Pressure Requirements

Instructions on filling the hot water boiler system and maintaining minimum pressure.

Connecting Supply and Return Piping Methods

Bypass Piping for Condensation Control

Explains bypass piping options for preventing condensation and adjusting return water temperature.

Connecting Supply and Return Piping Configurations

Single Zone System with DHW Priority

Diagram and explanation for a single zone system prioritizing domestic hot water.

Multizone System with Circulators and DHW Priority

Diagram and explanation for a multizone system with circulators and DHW priority.

Connecting Supply and Return Piping Variations

Multizone with Zone Valves & DHW Priority (Circulator)

Diagram for multizone systems using zone valves and circulators with DHW priority.

Multizone with Zone Valves & DHW Priority (Zone Valve)

Diagram for multizone systems using zone valves with DHW priority.

Vent Installation Guidelines

Vent Pipe Installation Requirements

Rules for vent pipe slope, support, material, and connections to chimney.

Vent System Modification - Boiler Removal

Procedure for safely removing a boiler from an existing common venting system.

Vent System Modification and Damper Use

Vent Damper Installation Procedure

Steps for installing a vent damper, including wiring and placement.

Vent Damper Operation and Placement

Guidance on proper operation and placement of the vent damper.

Connecting Gas Service

Gas Piping and Pressure Requirements

Details on connecting gas service, pipe sizing, drip legs, and leak testing.

Electrical Section Overview

Thermostat Installation Guidelines

Guidance on proper thermostat placement and initial setup for optimal performance.

Wiring Diagram - 24 V Standing Pilot

24 V Standing Pilot System Connections

Schematic illustrating electrical connections for a 24V standing pilot ignition system.

Wiring Diagram - Intermittent Ignition

Intermittent Ignition System Connections

Schematic illustrating electrical connections for an intermittent ignition system.

Lighting Instructions - Intermittent Pilot

Intermittent Pilot System Lighting Procedure

Step-by-step guide for safely lighting and operating the intermittent pilot system.

Lighting Instructions - Continuous Pilot

Continuous Pilot System Lighting Procedure

Step-by-step guide for safely lighting and operating the continuous pilot system.

Normal Sequence of Operation

Boiler Operation Sequence and Safety Features

Describes the sequence of events from thermostat activation to burner operation and safety shutdowns.

General Instructions for Boiler Care

Pre-Seasonal Inspection and Maintenance

Guidance on checks, cleaning, and inspections for efficient and safe operation.

General Instructions for Boiler Care

Flue Passageway Cleaning and Inspection

Procedure for cleaning the boiler's flue gas passageways for optimal performance.

Burner and Pilot Flame Adjustment and Check

Instructions for checking and adjusting burner and pilot flames for proper combustion.

Checking and Adjusting Gas Input Rate

Gas Input Rate Adjustment and Verification

Procedure for adjusting and verifying the boiler's gas input rate for efficient operation.

Safety Control Circuit Testing Procedures

How to test the pilot and high limit controls for proper safety function.

Replacement Parts - Base Components

Base Part Identification and Numbers

List of part numbers for base components including burner tubes, bases, and doors.

Replacement Parts - Heat Exchanger Components

Heat Exchanger Part Identification and Numbers

List of part numbers for heat exchanger components like nuts, tie rods, nipples, and assembled units.

Replacement Parts - Jacket Components

Jacket Part Identification and Numbers

List of part numbers for jacket panels, draft deflectors, and access panels.

Replacement Parts - Pilot Assemblies

Pilot Assembly Part Identification and Numbers

List of part numbers for spark and continuous pilot assemblies, including brackets and tubing.

Replacement Parts - Piping and Controls

Piping and Control Part Identification and Numbers

List of part numbers for various pipes, fittings, wiring harnesses, and control devices.

Rollout and Spill Switch Components

Rollout and Spill Switch Part Identification

Identification of parts for the temperature sensor bracket and the fixed temperature thermo (rollout switch).

Columbia MCB125 Specifications

General IconGeneral
BrandColumbia
ModelMCB125
CategoryBoiler
LanguageEnglish

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