Installation Guide

Rinnai Tankless Water Heater Installation and Operation Manual 59
1. Supply power to the tankless water heater
for the first time. The controller displays
“SEt” and the Priority button LED light on
the controller is blinking.
2. Press the “Priority” button. The controller
displays “nG” (natural gas).
4. The controller displays “In” (indoor).
Figure 61
In
SEt
Figure 57
Figure 58
nG
3(A). If using natural gas: Press the “On/Off”
button to confirm natural gas. Then,
proceed to step 4.
If using propane gas, skip this step and
proceed to step 3(B).
Figure 59
nG
3(B). If using propane gas: Press the up or
down arrow button. The controller
displays “LPG” (Liquid Propane Gas).
Press the “On/Off” button to confirm
Liquid Propane Gas. Proceed to step 4.
LPG
5(A). If you install the tankless water heater
indoors: Press the “On/Off” button to confirm
“In” (Indoor). Proceed to step 6.
If you install the tankless water heater
outdoors with the Rinnai outdoor vent cap,
skip this step and proceed to step 5(B).
Figure 62
In
Figure 60