IBC DC 33-124

INSTALLATION AND OPERATING INSTRUCTIONS
www.ibcboiler.com
DC Series Combi Boilers
DC 23-84, DC 29-106, DC 33-124, DC 33-160
(Natural Gas or Propane)
WARNING: If the information in this manual is not followed exactly, a re or
explosion may result causing property damage, personal injury, or loss of life.
Do not store or use gasoline or other ammable vapours and liquids or other
combustible materials in the vicinity of this or any other appliance.
WHAT TO DO IF YOU SMELL GAS:
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any phone in your building.
• Immediately call your gas supplier from a nearby phone. Follow the gas
supplier’s instructions.
• If you cannot reach your gas supplier, call the re department.
Installation and service must be performed by a qualied installer, service
agency or the gas supplier.
This Manual is also available in French - contact IBC or visit our web site www.ibcboiler.com

IBC DC 33-124 Specifications

General

AFUE	95%
Boiler Type	Condensing
Fuel Type	Natural Gas or Propane
Electrical Supply	120V, 60Hz
Heating Capacity	33, 000 BTU/h
Efficiency	95%

Summary

INSTALLATION

General Requirements & Codes

Details general installation guidelines, code requirements, and standards for compliance.

Location, Clearances & Venting

Specifies approved locations, clearances, venting, and air intake requirements for safe installation.

Condensate, Water & Gas Piping

Provides guidance on condensate removal, water piping, and gas piping connections.

Electrical Connections & Controls

Outlines electrical connections, control wiring, sensor installation, and safety precautions.

BOILER SYSTEMS AND OPERATION

General Operation & Controls

Provides a general overview of boiler operation, control panel functions, and installer interface.

Programmable Parameters & DHW Modes

Explains programmable parameters, DHW modes, and options for adding domestic hot water storage.

Space Heating & Sequence of Operation

Describes space heating operation and the step-by-step sequence of boiler functions.

STARTUP AND COMMISSIONING

Lighting, Shutting Down & Pre-Startup

Provides instructions for safely starting, shutting down, and performing pre-startup checks.

Commissioning & Fuel Conversion

Details commissioning steps, safety tests, and procedures for fuel conversion.

MAINTENANCE

General Care, Inspection & Venting

Covers general care, annual inspection, venting checks, and condensate trap maintenance.

Burner, Heat Exchanger & System Components

Details maintenance for burner, heat exchanger, pump, gas piping, controls, and water systems.

Fan and Gas Valve Service

Provides instructions for removing and re-assembling the fan and gas valve for servicing.

TROUBLESHOOTING

Preliminary Checks & Component Testing

Guides preliminary checks and testing of electronic components for fault diagnosis.

Warnings, Fault Codes & Operational Faults

Explains warning/fault codes and addresses common operational issues like burner, heating, and DHW problems.

DIAGRAMS

Parts Diagrams

Provides assembly diagrams and a detailed parts list for the DC Series boiler.

Wiring Diagrams

Includes schematic and ladder wiring diagrams for electrical connections and troubleshooting.

INSTALLATION & COMMISSIONING REPORT

Report Form

A report form for documenting boiler details, installation checks, and commissioning readings.

IMPORTANT

Energy Saving Feature Override

Details an energy-saving feature and conditions for using its override function.