Heater Manual
Installation and Operation
Instructions
This manual is intended only for use by a quali ed heating installer/technician. Read and follow this manual, all supplements and
related instructional information provided with the boiler. Install, start and service the boiler only in the sequence and methods
given in these instructions. Failure to do so can result in severe personal injury, death or substantial property damage.
Do not use the boiler during construction. Construction dust and particulate, particularly drywall dust, will cause contamination
of the burner, resulting in possible severe personal injury, death or substantial property damage. The boiler can only be operated with
a dust-free air supply. Follow the instruction manual procedures to duct air to the boiler air intake. If the boiler has been contaminated
by operation with contaminated air, follow the instruction manual guidelines to clean, repair or replace the boiler if necessary.
Affix these instructions near to the boiler. Instruct the building owner to retain the instructions for future use by a qualifi ed service
technician, and to follow all guidelines in the User’s Information Manual.
Condensing,
High Eff
iciency
IW Water Heaters
IE2IWIOM-1
82-0147-002
62403822 R00 July. 01, 2020
THIS MANUAL APPLIES TO
APPLIANCE WITH SERIAL
NUMBER HIGHER THAN 20440001.
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