Installation Guide

60 Rinnai Tankless Water Heater Installation and Operation Manual
5(B). If you install the tankless water
heater outdoors with the Rinnai
outdoor vent cap: Press the up or
down arrow buttons. The controller
displays “Out” (Outdoor).
Press the “On/Off” button to confirm
“Out” (Outdoor).
Proceed to step 6.
6. The controller displays “nG” or “LPG”,
and “In” or “Out” alternatively while the
“Priority” button is blinking. The controller
shows current gas setting and indoor/
outdoor setting.
For example, the controller displays “NG”
and “In” alternatively, indicating the water
heater is set for natural gas and indoor
installation. If you need to change these
settings, press the up arrow button to go
back to step 1. Otherwise, press the
“Priority” button.
Figure 63
Out
Figure 65
Figure 64
7. The controller briefly displays “888” while
a beeping sound is observed. Then,
complete initial settings and the controller
is off.
888
8. If you set initial settings incorrectly, you
can adjust the settings by configuring the
parameter settings. Follow the steps in
section “4.13 Configure Parameter
Settings” and change parameters 10
(Gas Type) and 14 (Indoor/Outdoor)
correctly.
9. After initial settings are complete, press
the “On/Off” button to turn on the unit.
Figure 66
10. If "LPG" (Liquid Propane Gas) is
selected, apply the supplied gas
conversion label at an open space above
the existing label on the left side of the
water heater.
Note: See the “Key Points For A
Successful Installation” document (on
tankless water heater front cover) for
illustration of label location.
11. The default altitude setting for this water
heater is 0-2,000 ft. (0-610 m). If this
water heater is installed at a different
altitude, select the appropriate altitude
setting. Also, set up other parameters
properly. Refer to section "4.13 Configure
Parameter Settings" for specific details
on setting parameters.