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Identifies immediately hazardous situations to prevent serious injury or death.
Alerts to potentially hazardous situations to prevent serious injury or death.
Points out potentially hazardous situations to prevent moderate injury or property damage.
Provides details for enhanced efficiency, longevity, and proper operation.
Offers recommendations for optimal installation procedures.
Details how to adjust the domestic hot water temperature settings.
Introduces the DC Series boilers/water heaters and their general installation aspects.
Outlines the installation must conform to all applicable codes and standards.
Specifies suitable locations and clearance requirements for installation.
Explains the applications of direct vent systems and combustion air requirements.
Details approved materials for exhaust venting systems in Canada and USA.
Defines vent travel allowances and equivalent lengths for various pipe sizes and fittings.
Provides guidelines for routing vent piping through building structures.
Details requirements for terminating exhaust and intake vents on a rooftop.
Outlines procedures for terminating exhaust and intake vents on building sidewalls.
Details requirements for direct vent combustion air intake piping.
Discusses limitations on indoor air intake for combustion.
Provides guidance for installing the unit in confined spaces like closets.
Explains the procedure for cleaning the condensate trap and further installation details.
Covers general aspects of water piping for space heating, including pump operation.
Details the requirements for installing the pressure relief valve and its discharge piping.
Illustrates basic options for boiler/water heater trim and piping configurations.
Discusses primary/secondary piping benefits and installation rules, and pump air bleeding.
Explains the operation of the domestic hot water system, including modes and water quality considerations.
Details the piping requirements for domestic hot water connections and system components.
Provides instructions for connecting the unit to a 120VAC power supply.
Addresses the need for surge protectors and power conditioning equipment.
Explains how to connect zone valves and pumps for system zoning.
Details wiring connections for thermostats and sensors to the control module.
Provides a general overview of the boiler/water heater's capabilities and features.
Describes the controller indicators, buttons, and basic operation.
Covers the installer interface for appliance ON/OFF and basic settings.
Explains how to set PSI/Fahrenheit or Bar/Celsius and access programming modes.
Details the different operating modes for tankless domestic hot water generation.
Explains how to connect the unit to a domestic hot water storage tank.
Describes how the unit provides heat for space heating, including outdoor reset.
Details the operational sequence of the boiler/water heater for heating and hot water calls.
Provides instructions for safely starting up and shutting down the boiler.
Lists essential checks to perform before initial boiler startup.
Outlines the steps for commissioning the boiler, including fuel conversion checks.
Details the procedure for converting the unit between natural gas and propane fuels.
Explains how to access the combustion chamber and remove the burner assembly.
Covers general care, inspection, venting, condensate traps, and burner maintenance.
Details inspection and cleaning procedures for the heat exchanger.
Outlines checks for the pump, gas piping, and control module during maintenance.
Covers maintenance of the water heating system and freeze protection measures.
Advises on the proper treatment of boiler water and chemical inhibitors.
Details the procedure for maintaining and testing the pressure relief valve.
Emphasizes the importance of domestic water quality for system longevity.
Provides instructions for removing and re-assembling the fan and gas valve components.
Guides users through initial checks to diagnose system issues.
Introduces troubleshooting for electronic components like sensors and the control module.
Lists common warning and fault codes displayed by the controller and their solutions.
Covers various other faults not classified under warnings or specific codes.
Details the function, resistance values, and testing of various temperature sensors.
Describes the fan operation and how to connect thermostats to the control.
Explains the function of the water pressure sensor and its role as a low water cut-off.
Details the vent high-limit sensor's function in ensuring safe shutdown.
Covers troubleshooting and replacement of DHW flow and temperature sensors.
Details the DHW tank sensor and its resistance values for temperature control.
Lists controller warning codes and possible solutions for troubleshooting.
Lists controller fault codes and possible solutions for troubleshooting.
Covers common burner faults like ignition failure, noisy ignition, and resonance.
Addresses issues related to no space heating, desired temperature not reached, and no hot water.
Details troubleshooting steps when hot water does not reach the desired temperature.
Refers to diagrams showing the assembly of boiler and water heater parts.
Refers to diagrams illustrating the electrical wiring connections for the unit.
Provides a parts assembly diagram for the DC 15-95 model.
Provides parts assembly diagrams for DC 15-96, 20-125, and 33-160 models.
Illustrates the schematic and ladder wiring diagrams for the DC series.
General
