2
BEFORE ATTEMPTING ANY INSTALLATION, MODIFICATION OR SERVICE OF THIS
HEATER, MAKE SURE THE ELECTRICAL POWER IS DISCONNECTED.
Read and understand the instructions thoroughly before attempting the installation or service of this water
heater. Failure to follow the instructions can result in serious injury, death and/or property damage. The
warranty of the water heater will depend upon proper installation according to the instructions. Some heaters
come supplied with separate faucet aerators. If supplied, the aerator must be installed in the faucet for
optimum performance. The heater must only be used to heat water and must be installed in a location where it
is not subject to freezing temperatures. The manufacturer is not liable for any damages resulting from improper
installation or misuse.
The installation must conform to the latest requirements of the National Electrical Code and all applicable state
and local codes. This information is available through local authorities. You must understand the requirements
before beginning this installation.
This unit is not required by UL 499 to employ a temperature and pressure relief valve (T&P). You should check
with local codes to find out if one is required. If it is, it must be installed in the outlet hot water pipe between
the heater and the isolation valve.
IMPORTANT SAFETY INSTRUCTIONS
When using this electrical equipment, basic safety precautions should always be followed, including the
following:
READ AND FOLLOW ALL INSTRUCTIONS
Supply this appliance only from a grounded system. A green terminal (or a wire connector marked “G”, “GR,
“Ground”, or “GROUNDING”) is provided for wiring the appliance. To reduce the risk of electric shock, connect
this terminal or connector to the grounding terminal of the electric service or supply panel with a continuous
copper wire in accordance with the electrical installation code.
Contents
GENERAL .....................................................................................................................................................................3
1) MOUNTING THE UNIT TO THE WALL......................................................................................................................4
2) PLUMBING HOOK-UP .............................................................................................................................................5
3) ELECTRICAL HOOK-UP ............................................................................................................................................8
4) COMMISSIONING THE HEATER ........................................................................................................................... 10
5) TROUBLESHOOTING ............................................................................................................................................ 13
6) PERIODIC MAINTENANCE .................................................................................................................................... 14
7) PART NUMBERS FOR FITTINGS, AERATORS AND AERATOR ADAPTORS ............................................................. 15
8) REPAIR PARTS FOR FLOWCO UNITS .................................................................................................................... 15
