Component Maintenance Required Frequency Check
Gas Piping
Check for damage or leaks and repair as needed.
Annually
□
Heat
Exchanger
treatment
Check consistency of any heat exchanger treatment used,
for appropriate mixture. Chemical inhibitors are consumed
over time, lowering their density.
Annually
□
Verify proper operation after servicing.
Caution
Installers should inquire of local water purveyors
as to the suitability of their supply for use in
hydronic heating systems.
If water quality is questionable, a local water
treatment expert must be consulted for testing,
assessment and, if required, treatment.
Alternatively, water or hydronic fluid of known
quality can be brought to the site.
Annually
□
Freeze
protection
Check the effectiveness of the glycol in the system. Use
only antifreeze made specifically for hydronic systems.
Inhibited propylene glycol is recommended. Antifreeze
volume must be between 25% and 50% of the total volume
of water in the system.
Warning
Do not use automotive-type ethylene or other
types of automotive glycol antifreeze, or
undiluted antifreeze of any kind. This may result
in severe combi boiler damage. It is the
responsibility of the Installer to ensure that
glycol solutions are formulated to inhibit
corrosion in hydronic heating systems of mixed
materials. Improper mixtures and chemical
additives may cause damage to ferrous and
non-ferrous components as well as non-
metallic, wet components, normally found in
hydronic systems. Ethylene glycol is toxic, and
may be prohibited for use by codes applicable to
your installation location. For environmental and
toxicity reasons, IBC recommends only using
non-toxic propylene glycol.
Section: Service and maintenance
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