Freeze Protection - Rinnai REU-V2520FFU Operation & Installation Manual

I N S TA L L E R ' S I N S TA L L AT I O N I N S T R U C T I O N S
If the Rinnai water heater is disconnected from
either the electrical supply or gas supply, or if
there is an error that prevents the water heater from
functioning normally, there is NO FREEZE
PROTECTION. Freeze protection of the water
heater is only possible when electricity, gas
supply and normal water heater functions are
enabled. If you expect freezing conditions while
either electricity or gas supply is interrupted,
water must be completely drained from water
heater.
This water heater and venting system is
designed to withstand temperatures to as
O
low as -30 F, so long as electricity and gas
are supplied to the product and normal
water heater functions are enabled. If either
gas or electricity is interrupted NO FREEZE
PROTECTION is available.
The installation of auto drain down solenoid valves is optional. However, Rinnai strongly
recommends that these valves be installed to prevent damage from freezing in case the normal
freeze protection should become disabled. If the valves are not installed then any product
damage due to freezing will not be covered by the warranty.
NOTE: Rinnai is continually updating and improving products, therefore, specifications are subject
to change without prior notice. Local, state, provincial and federal codes must be adhered to prior
to installation.
Climate conditions can dictate special applications. Please refer to local codes before installing
product.
Rinnai America

Freeze Protection

Turn Water Off
Turn Gas Off
Drain Water

Filter
Drain
Valve
Water
Hot Cold Gas
FF Models
Gas
Valve