Modulex Light Commercial Series
CHAPTER 2: General Information
OMM-0158_A
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2.8 Operational Requirements
General Requirements
The following instructions MUST be followed:
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Boiler must only be used for its designated purpose as described.
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Each unit is fitted with a data plate. Consult the details on this plate to verify whether the boiler
is compliant with its intended location, e.g.: gas type, power source and venting classification.
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Only use the boiler with the accessories and spare parts listed.
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Other combinations of accessories and products must only be used if specifically designed for
the intended application and do not affect the system performance or the safety requirements.
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Maintenance and repairs must only be performed by trained professionals.
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Installation of a condensing gas boiler must be approved per all federal and local government
codes, regulations, and laws.
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Operation of a condensing gas boiler must use a vent system that has been specifically
designed and approved for this type of boiler.
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Note that local permission and approval for the vent system and condensate water connection
to a public sewage system may be required.
Regulatory Requirements
You must also conform to any rules, regulations, or laws concerning the following:
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Local building codes regarding the installation.
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Local building codes concerning the air intake and outlet systems and the vent connection.
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Regulations for the power supply connection.
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Technical rules laid down by the gas utility company concerning the connection of the gas
connection to the local gas mains.
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Instructions and standards concerning safety equipment for the water/space heating system.
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Installation instructions for building heating systems.
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The boiler must be located in an area where leakage will not result in damage to the area
adjacent to the boiler or to lower floors of the structure. When such locations cannot be avoided,
it is recommended that a suitable drain pan be installed under the boiler.
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Do not restrict or seal any air intake or outlet openings.
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Inform owner, in writing, of any defects found and the associated hazard.
W A R N I N G !
Should overheating occur or gas supply fail to shut off, do not turn off or disconnect the electrical
supply to the pump; shut off the gas supply at a location external to the boiler.
Water Quality Requirements
NOTE:
For additional information concerning water quality and treatment, refer to AERCO technical
documents Glycol Directive and AERCO Piping Application Guide (GF-136-P).
Unsuitable heating system water can cause the formation of scale or sludge, which affects system
efficiency. It can also cause corrosion and reduce life of the heat exchanger.
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You must follow guidelines for boiler water quality.
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Thoroughly flush the system prior to filling.
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Follow the cleaning instructions.
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Never use water that has been treated by reverse osmosis, deionization, or distilled.
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Do not use inhibitors or other additives unless approved by AERCO for that purpose.
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When frost protection of the heating system is desired, only use AERCO-approved
antifreezes. The allowed maximum concentration is 50%.
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When using oxygen-permeable pipes, e. g. for under floor heating systems, you must
separate the system from the boiler using plate heat exchangers.
