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Safety Instructions
Safety Precautions
Read and understand this safety information before installing,
operating or servicing this Navien Combination Water Heater.
This manual must remain with the Navien Combination Water
Heater.
Have your installer show you the location of the gas shut-
off valve and show you how to close the valve. Close the
manual shut-off valve if the Navien Combination Water
Heater ever becomes subjected to overheating, fire, flood,
physical damage or any other such damaging condition.
And, DO NOT operate the Combination Water Heater
again until it has been checked by qualified personnel.
DO NOT turn on the Combination Water Heater unless water and gas supplies
are fully opened.
DO NOT turn on the Combination Water Heater if cold water supply shut-off valve is
closed.
DO NOT use this Navien Combination Water Heater for other than its intended
purpose as described in this manual.
DO NOT attempt to repair or replace any part of your combination water heater
unless it is specifically recommended in this manual. All other servicing should
be referred to an Authorized Service Technician.
Make certain power to the Combination Water Heater is turned “OFF” before
attempting to make any repairs to your Navien combination water heater.
Label all wires prior to disconnecting and servicing controls. Wiring errors can cause
improper and/or dangerous operation. Verify proper operation after servicing.
Improper adjustment, alteration, service or maintenance can cause property
damage, personal injury or death.
To prevent scalding always check the temperature of the hot water before
showering, bathing etc.
DO NOT attempt to change the temperature setting while someone is using the
combination water heater.
DO NOT use parts other than those specified for this equipment.
DO NOT operate the combination water heater if you feel something is wrong
with the unit.
DO NOT allow children to operate or otherwise handle the unit.
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