WH-I-O Rev H
Installation & Operation Manual
Models: WH 55 - 399
This manual must only be used by
a qualified heating installer / service
technician. Read all instructions,
including this manual and the Knight
Wall Mount 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.
To Next Page
Need help?
General