Modulex Light Commercial Series
CHAPTER 2: General Information
OMM-0158_A
• 6/28/2022 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page
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Close the valves of the boiler while flushing the system, do not introduce any system cleaner
into the boiler loop. Flush system thoroughly to remove all system cleaner before filling boiler.
Approved antifreeze (maximum concentration of 50%):
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Sentinel X500 (available from AERCO)
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Rhomar RhoGard Multi-Metal (AL safe)
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Noble NoBurst AL
Approved system cleaners:
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Sentinel X300 (available from AERCO)
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Noble Noburst Hydronic System Cleaner
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Fernox F3 Cleaner
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Rhomar Hydro-Solv 9100
The system cleaners from NoBurst, Rhomar, and Fernox are NOT to be used in the boiler itself.
The boiler must be closed off (valves closed) from the rest of the system or not connected while the
cleaners are in the system. The system should then be drained and then thoroughly flushed with
clean water to remove all the system cleaner.
Approved inhibitors:
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Sentinel X100 (available from AERCO)
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Rhomar Pro-tek 922
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Noble Noburst AL inhibitor
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Intercool NFP-AA
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Cryo-tek 100/Al
2.9 Tools, Materials, And Additional Equipment
For the installation and maintenance of the boiler you will need:
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Standard tools for space heating, gas and water fitting
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Manometer that is capable of reading both positive and negative pressures
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Combustion analyzer
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Digital multimeter
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pH digital meter
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Metric Allen wrenches
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Metric socket wrenches
2.10 Disposal
Dispose of the boiler packaging in an environmentally sound manner.
Dispose of components of the heating system (e.g. boiler or control device), that must be replaced
in an environmentally responsible manner.
2.11 General Warnings
Using the Operation and Maintenance Manual
This instruction manual is an integral and indispensable part of the product and must be retained
by the person in charge of the appliance. Please read the instructions contained in this manual
carefully as they provide important information regarding the safe installation, use and servicing
of this appliance. Keep this manual in a safe place for future reference.
