Rinnai Water Heater REU-V2520FFUD - Manual (Page 45)

Model #
Model #
Inlet Gas Pressure Manifold Forced Low Fire Manifold Forced High Fire
Inlet Gas Pressure Manifold Forced Low Fire Manifold Forced High Fire
REU-V2520FFU Series
REU-V2520FFUD Series
REU-V2532FFU Series
REU-V2532FFUD Series
REU-V2520FFU Series
REU-V2520FFUD Series
REU-V2532FFU Series
REU-V2532FFUD Series
6" - 10.5" 0.77" 3.7"
6" - 10.5" 0.77" 3.7"
10" - 13.5" 0.93" 4.2"
10" - 13.5" 0.93" 4.2"
Propane Gas Inlet and Manifold Gas Pressure by Model
Natural Gas Inlet and Manifold Gas Pressure by Model
NOTE: The pressure may be low due to too little flow, too high an incoming temperature,
and/or undersized gas piping. Examine these areas before determining that the
pressure needs to be adjusted. Contact Rinnai before adjusting manifold pressures at
1-800-621-9419. Failure to contact Rinnai, could void unit’s warranty.

Rinnai America FF Models
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
Testing
1) Turn on the gas and water.
2) Check for water and gas leaks. Use soapy water to test for gas leaks.
3) Remove pressure test point screw, attach pressure gauge to test point.
4) Turn Power on.
5) Open any hot water tap fully.
6) Check test point or supply pressure in water columns per inch.
7) If it is determined that the gas pressure needs adjusting, first check the incoming
pressure at the test point on the gas inlet. If it is correct follow the adjusting
procedure contained in the pouch of the unit EXACTLY.
The regulator is pre-set at the factory, it should not need resetting.
8) Turn the hot water off. Turn the power off. Remove the pressure guage and replace
the test point screw. Check for a gas leak around the test point screw.
9) Replace the front cover.
10) Turn the power back on.
11) Check the operation of the unit. Check the operation of each of the remote
controller(s). Check the operation of the Power failure protection system.
12) Explain the proper operation of the Rinnai Water Heaters to the customer.