Rinnai Smart Cylinder MP indoor stainless steel: Owner & installer guide: 20430-C 03-17 | 7
Maintenance and servicing
Period
What needs to be done
Every six months
TPR (temperature & pressure relief) valve—operate the easing gear
Year five
Inspection and service of the entire hot water system, including the element*
Every 24 months
after year five
Inspection and service of the entire hot water system, including the element*
* In hard water areas the element(s) must be periodically descaled. To do this the unit must be drained and the element
removed.
TPR valve
This valve is located near the
top of the cylinder and is
essential for safe operation.
The TPR valve works by
automatically venting hot
water if the temperature or
pressure of the water in the
cylinder gets too high.
Every six months operate the
easing gear to remove lime
deposits and to check that
it is not blocked. As this will
discharge hot water, ensure
no one is near the drain line.
Failure to operate
the relief valve
easing gear at
least once every
six months may result in
the water heater exploding.
Continuous leakage of water
from the valve may indicate
a problem. It is important
that you raise and lower the
easing gear gently. During
the operation, if the valve
does not discharge water
when the easing gear is
lifted, or does not seal again
when closed, arrange for an
authorised person to come
and inspect the system
immediately.
During servicing of
your cylinder the
TPR valve needs to
be checked and/or replaced.
This needs to be done by an
authorised person at intervals
not exceeding five years,
or more frequently in areas
where the water is classified
as hard.
A TPR valve must not be
replaced with one that has a
higher pressure rating than
that specified for the cylinder.
Maintenance and servicing
Rinnai has a maintenance,
service, and spare parts
network with personnel who
are fully trained and equipped
to give the best advice on
your Rinnai product. Regular
maintenance and servicing
is not covered by the Rinnai
warranty.
For help locating a service
person in your area call 0800
RINNAI (0800 746 624).
IMPORTANT
Hot water systems, like cars, require regular maintenance and servicing.
To ensure longevity of your cylinder we recommend the following.
WARNING
Lift until water flows
from the drain line,
lower gently
To
water
heater
To drain line
How to operate the easing gear
TPR position -
top of cylinder
Insulated TPR valves will
look like the image below