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Details certifications and installation conformance to National Fuel Gas Code, CSA B149.1, and others.
Covers planning for venting materials, travel, termination, and managing steam plume impact.
Specifies that combustion air must be piped directly from outdoors and lists relevant codes.
Details the importance of condensate drainage, neutralization, and trap installation.
Discusses general piping considerations for space heating, pump, and pressure drop.
Details primary/secondary piping configurations and benefits for efficient heat generation.
Provides guidelines and warnings for domestic hot water system installation.
Explains the unit's independent circuit for DHW generation and water quality guidelines.
Covers DHW piping connections, pressure relief valve, and thermal expansion.
Details gas inlet pressure requirements, pipe sizing, and connection requirements.
Outlines requirements for electrical wiring, grounding, and hook-up.
Explains the Standard, Comfort, and ECO Comfort modes for tankless domestic hot water.
Explains the unit's operational sequence for space heating and domestic hot water calls.
Provides step-by-step instructions for safely operating and shutting down the appliance.
Details crucial pre-ignition checks for venting, water piping, gas pressure, and wiring.
Explains factory calibration, fuel calorific value adjustments, and technician requirements.
Guides on converting the unit between natural gas and propane, including orifice and CO2 adjustments.
Details general care, inspection, and maintenance of venting and condensate traps.
Lists warning codes detected by the controller to prevent damage and unsafe operation.
Details specific fault codes (F000-F030) and their possible causes and solutions.
General
