Rinnai RL75i REU-VC2528FFUD-US Installation And Operation Manual page 40

WARNING
Tes ng the pressure relief valve should only be
performed by a licensed professional. Scalding hot
water may be released under pressure.
Pressure Relief Valve:
Operate the valve manually once a year. In doing so,
it will be necessary to take precau ons with regard to
the discharge of poten ally scalding hot water under
pressure. Ensure discharge has a place to flow.
Contact with your body or other property may cause
damage or harm.
Visual Inspec on of Flame
Verify proper opera on a er servicing.
The burner must flame evenly over the en re surface
when opera ng correctly. The flame must burn with a
clear, blue, stable flame. See the parts breakdown of
the burner for the loca on of the view ports.
The flame pa ern should be as shown in the figures
below.
40
Freeze Protec on
Make sure that in case of freezing weather that the
water heater and its water lines are adequately
protected to prevent freezing. Damage due to
freezing is not covered by the warranty. Refer to the
sec on on Freeze Protec on.
Winterizing
These recommenda ons are intended to suggest
prac ces which are e ec ve for winterizing the water
heater. They should be used as a guide only. No
liability is assumed for any issues resul ng from the
use of this informa on.
GAS
Shut o the gas to the water heater. It is generally
preferable to shut o the gas service to the en re
loca on if gas is not going to be used.
WATER
Shut o the cold water supply to the water heater. It
is generally preferable to shut o the water to the
en re loca on if water is not going to be used.
Drain the water heater by opening the drain valves on
the cold water line and hot water line.
Open several hot water taps and remove the filter
assembly at the water inlet in order to allow room for
expansion in case there is water in the lines that
freeze.
ELECTRIC
Disconnect the power supply by either unplugging the
electrical cord or by turning o the circuit breaker to
the water heater to prevent poten al damage from
irregular power surges or interrup ons.
VENT TERMINATION
Place a cover over the vent termina on (intake and
exhaust) if it can be safely accessed. The cover should
be easy to apply and remove. This will prevent
debris, leaves, and small animals from entering the
ven ng and water heater which could cause air flow
issues upon return to service.
VC Series Manual