INDOOR MODEL Flow Modulated with Hydro-generated Ignition
520-HN-N / 520-HN -L
Suitable for heating potable water only - Not approved for space heating purposes
(Intended for variable flow applications with steady cold water inlet temperatures)
Warning: If the information in this manual is not followed exactly, a fire
or explosion may result causing property damage, personal injury or
Do not store or use gasoline or other flammable vapor and liquids in the
vicinity of this or any other appliance.
Improper installation, adjustment, alteration, service or maintenance
can cause injury or property damage. Refer to this manual. For assistance
or additional information consult a qualified installer, service agency or
the gas supplier. In the Commonwealth of Massachusetts this product
must be installed by a licensed plumber or gas fitter.
Upon completion of the installation, these instructions should be handed
to the user of the appliance for future reference.
What to do if you smell gas
Close gas valve. Open windows.
Do not try to light any appliance.
Do not touch any electrical switch; do not use any phone in your
Immediately call your gas supplier from a neighbor's phone. Follow
the gas supplier's instructions.
If you cannot reach your gas supplier, call the fire department.
Installation and service must be performed by a qualified installer,
service agency or the gas supplier.