lp-441 Rev. 004 Rel. 000 Date 7.2.21
47
It is extremely important that whenever work is performed on the
plumbing system that either:
• The water heater is powered off, or,
• The water heater is valved off and isolated from the
plumbing system.
Failure to take these measures could result in a dry-firing condition.
The water heater must be full of water and the system fully purged
BEFORE powering the water heater. Performing any work in the
plumbing system without either powering off the water heater or
isolating the water heater through the use of shut-off valves could
result in a condition referred to as “dry-firing”. Dry-firing the water
heater will damage the heat exchanger, and could result in property
damage, serious personal injury, or death. Such damages ARE NOT
covered by water heater warranty.
Part 15 - Maintenance
Allowing the water heater to operate with a dirty combustion
chamber will hurt operation. Failure to clean the heat exchanger
as needed by the installation location could result in water heater
failure, property damage, personal injury, or death. Such product
failures ARE NOT covered under warranty.
In unusually dirty or dusty conditions, care must be taken to keep
water heater cabinet door in place at all times. Failure to do so
VOIDS the warranty.
Hydrogen gas can build up in a hot water system served by this
water heater that has not been used for a long period of time
(generally two weeks or more). When opening a hot water faucet
in a system that has been out of use for a time, keep all ignition
sources (electrical appliances, open flame, etc.) away from the
faucet. If hydrogen is present, there will be a sound of air escaping
as water begins to flow. Allow the water to run for a few minutes
to dissipate built up hydrogen from the system. Failure to follow
these instructions can result in property damage, personal injury,
or death.
The water heater requires minimal periodic maintenance under
normal conditions. However, in unusually dirty or dusty conditions,
periodic vacuuming of the cover to maintain visibility of the display
and indicators is recommended.
Periodic maintenance should be performed once a year by a
qualified service technician to assure that all the equipment is
operating safely and efficiently. The owner should make necessary
arrangements with a qualified heating contractor for periodic
maintenance of the heater. The installer must also inform the owner
that the lack of proper care and maintenance of the heater may
result in a hazardous condition.
Table 23 - Installation Checklist
Start-Up, Adjust, and Test
Yes
No
Has the water heater been started?
If necessary, has the water heater gas valve been adjusted?
Has the installation been customized per installation location requirements?
Have all customized system parameters been tested?
Has proper water heater operation been confirmed?
Final Installation Approvals
Signed by Technician
Date
Considerations
•
To avoid electric shock, disconnect electrical supply before
performing maintenance.
•
To avoid severe burns, allow the heater to cool before
performing maintenance.
NOTE:
In addition to the routine maintenance detailed in this manual,
this water heater should be inspected annually by a qualified service
technician to ensure that all the equipment is operating safely and
efficiently. The owner should make necessary arrangements with a
qualified heating contractor for periodic maintenance of the heater.
The installer must also inform the owner that lack of proper care and
maintenance may result in a hazardous condition, premature heater
failure, and void the warranty.
Routine preventative maintenance ensures the water heater operates
safely and efficiently over its service life. The
Owner / User
may
perform the maintenance activities described below.
Monthly (Every two weeks in hard water locations)
It is recommended that a few quarts of water be drained from the
heater. This will flush sediment deposits from the bottom of the heater
and lengthen the heater’s service life.
Water drained from the water heater may be scalding hot. Take care
to avoid scalding. Wear gloves and safety glasses, and direct water to
a safe drainage location. It is recommended to turn down the water
heater thermostat and run hot water from a faucet until it cools
BEFORE draining water from the heater. Failure to comply with this
warning could result in property damage, severe personal injury, or
death.
