AERCO Modulex Users Guide - Manual (Page 6)

USER’S INFORMATION MANUAL
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C. Periodically during heating season:
Where low water cut-offs are used, a periodic inspection of the low water cut-off is
necessary, including flushing of float type devices. Refer to the low water cut-off
manufacturer’s specific instructions.
D. End of each heating season – annual shut down procedure:
Follow instructions in this manual under “To Turn Off Gas To The Appliance.”
If heating system is to remain out of service during freezing weather, and does not
contain antifreeze, drain system completely. If boiler will be exposed to freezing
temperatures, drain condensate lines. Otherwise, do not drain system or boiler.
E. Should overheating occur or the gas supply fails to shut off, do not turn off or
disconnect the electrical supply to the pump. Instead, shut off the gas supply at a
location external to the appliance.