Rinnai RIN250EHP Installation And Owner's Manual page 19

Installation and Owner's Manual – Heat Pump
Owner's Manual
What Should I Do During Holi-
days?
If you are going to be away for a week
or more, it is advisable to turn off the
electricity supply to the system. While
there is no damage likely if the electricity
is left on, you will consume energy
through storage tank heat losses which
can be avoided.
Warning: If the hot water system is
not used for two weeks or more, a
quantity of hydrogen gas, which is highly
flammable, may accumulate in the water
heater. To dissipate this gas safely, it is
recommended that a hot tap be turned
on for several minutes at a sink, basin
or bath, but not a dishwasher, clothes
washer, or other appliance. During this
procedure, there must be no smoking,
open flame or any other electrical
appliance operating nearby. If hydrogen
is discharged through the tap, it will
probably make an unusual noise similar
to air escaping.
H4123 025961 Rev. A July 2012
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