Rinnai REU-V2520FFU Operation & Installation Manual page 27

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
1) Read the safety issues completely before installing the Rinnai Water Heater.
2) This water heater is suitable for water (potable) heating or space heating.
- The piping and components connected to the Rinnai Water Heater must approved
for use in portable water systems.
- Toxic chemicals such as those used for boiler water treatment are NOT to be
introduced to the portable water used for space heating.
- The Rinnai Water Heater, if it will be used as a potable water source, must not be
connected to a system that was previously used with a nonpotable
water heating appliance.
- When the system requires water for space heating at temperatures higher
than required for other uses, a means such as mixing valve shall be installed to
temper the water for other uses in order to reduce the scald hazard potential.
3) The Rinnai Water Heater is not suitable for use in pool or spa applications
4) This unit is designed to be installed indoors using the proper vent piping to
exhaust by-products of combustion to the outside environment. Contact your
dealer or Rinnai for proper vent kits. DO NOT operate this unit without vent piping
connected. Exhaust gasses must be expelled outside the home.
5) Maintain proper space around the unit for proper servicing and operation.
Minimum clearances from combustible materials are listed below.
6) Installer must install a Pressure relief
valve. Pipe pressure relief discharge
to a drain or outside environment (See
pressure relief valve section).
7) The appliance should be located in an area where leakage of the unit or
connections will not result in damage to the area adjacent to the appliance or
to lower floors of the structure. When such locations cannot be avoided, it is
recommended that a suitable drain pan, adequately drained, be installed under
the appliance.
Rinnai America
-Warnings- (Commercial Unit)
This manual must be followed exactly.

Top of Heater
Back of Heater
Front of Heater
Sides of Heater
Floor
Vent/Air Intake
6 inches
0 inch
6 inches
2 inches
12 inches
0 inches
FF Models