Installation & Operation Manual
Models: 400, 500, 600, 725,
& 850
is manual must only be used by a
quali ed heating installer / service
technician. Read all instructions,
including this manual and the FTXL
Service Manual, before installing.
Perform steps in the order given.
Failure to comply could result in
severe personal injury, death, or
substantial property damage.
WARNING
Save this manual for future reference.
FTXL-I-O_100059358_2000005000 Rev E
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