Installation Guide

4 Rinnai Tankless Water Heater Installation and Operation Manual
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.
ANSI American National Standards Institute
Btu British Thermal Unit
DHW Domestic Hot Water
GPM Gallons per minute
LPG Liquid Petroleum Gas
NG Natural Gas
PP Polypropylene
PRV Pressure Relief Valve
PSI Pounds per square inch
WC Inches of water column
•
This manual provides instructions on
operating and maintaining the water heater.
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
precautions.
•
Be sure your water heater is installed by a
trained and qualified professional.
•
If installing in the state of Massachusetts,
refer to section “7.1 Massachusetts State
Gas Regulations” in this manual.
Table 1 provides a list of common acronyms
and abbreviations used in this manual:
• It is recommended that a trained and
qualified professional who has attended
a Rinnai training class complete the
installation. The warranty may be voided
due to any improper installation.
• A 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
rinnaipro.myabsorb.com.
• Read all instructions in this manual
before installing the water heater. The
water heater must be installed according
to the exact instructions in this manual.
• Proper installation is the responsibility of
the trained and qualified professional.
• When installation is complete, leave this
manual with the water heater (for
internal/indoor units) or give the manual
directly to the consumer.
Table 1. Acronyms and Abbreviations