Model #
Inlet Gas Pressure Manifold Forced Low Fire
Manifold Forced High Fire
REU1616-W Series
6" - 10.5"
0.73"
3.5"
REU2020-W Series
6" - 10.5"
0.74"
3.7"
REU2526-W Series
6" - 10.5"
0.56"
3.4"
REU2532-W Series
6" - 10.5"
0.56"
3.4"
Model #
Inlet Gas Pressure Manifold Forced Low Fire
Manifold Forced High Fire
REU1616-W Series
10" - 13.5"
0.72"
3.3"
REU2020-W Series
10" - 13.5"
0.74"
3.7"
REU2526-W Series
10" - 13.5"
0.88"
5.1"
REU2532-W Series
10" - 13.5"
0.88"
5.1"
REU2520FFU Series
6" - 10.5"
0.77"
3.7"
REU2532FFU Series
6" - 10.5"
0.77"
3.7"
REU2520FFU Series
10" - 13.5"
0.93"
4.2"
REU2532FFU Series
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
Propane Gas Inlet and Manifold Gas Pressure by Model
Natural Gas Inlet and Manifold Gas Pressure by Model
46
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.
NOTE: The pressure may be low due to too little fl ow, 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.
7) If it is determined that the gas pressure needs adjusting, fi rst check the in coming
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.
