Welcome - Rinnai Sensei CU199i Installation And Operation Manual

1. Welcome

1. Welcome
Thank you for purchasing a Rinnai Tankless
Water Heater. Before installing and operating this
water heater, be sure to read these instructions
completely and carefully to familiarize yourself with
the water heater's features and functionality.
To The Installer
• It is recommended that a licensed profes-
sional install the appliance, inspect it, and
leak test it before use. The warranty may
be voided due to any improper installation.
• The trained and qualified professional
should have skills such as:
– Gas sizing
– Connecting gas lines, water lines,
valves, and electricity
– Knowledge of applicable national, state,
and local codes
– Installing venting through a wall or roof
– Training in installation of tankless water
heaters. Training on Rinnai Tankless
Water Heaters is accessible at www.
trainingevents.rinnai.us
• Read all instructions in this manual before
installing the water heater. The water heat-
er must be installed according to the exact
instructions in this manual.
• Proper installation is the responsibility of
the installer.
• When installation is complete, leave this
manual with the water heater (for internal/
indoor units) or give the manual directly to
the consumer.
Rinnai Tankless Water Heater Installation and Operation Manual
To The Consumer
• You must read the entire manual to prop-
erly operate the water heater and to have
regular maintenance performed.
• Keep this manual for future reference.
• As when using any appliance generating
heat, there are certain safety precautions
you should follow. See section "2.2 Safety
Precautions" for detailed safety precau-
tions.
• Be sure your water heater is installed by a
licensed installer.
• If installing in the state of Massachusetts,
you must read section "7.1 Massachusetts
State Gas Regulations" in this manual.
Acronyms and Abbreviations
Following is a list of common acronyms and
abbreviations used in this manual:
Table 1
ANSI American National Standards
Institute
BTU British Thermal Unit
DHW Domestic Hot Water
GPM
Gallons per minute
LP
Liquid Propane
NG Natural Gas
PP Polypropylene
PRV Pressure Relief Valve
PSI Pounds per square inch
W.C. Inches water column
5