3
Installation
CNA-Series Tankless Heater
Keltech •
215-1814 Rev. C; ECN 150010
7/13/2015
Pre-Installation Information
General Information
The Keltech Tankless Water Heater provides instant and precise temperature-controlled hot water . To insure proper
performance, install the heater according to the following installation instructions and in compliance with applicable
national and local codes .
Keltech can supply heaters for most commercial and industrial hot water applications . Flow rates and temperature
figures are important for proper sizing . If needed to meet certain temperature demands, flow control devices
are readily available . See Maximum Temperature Rise Specifications chart . Contact
KELTECH, INC.
for further
information on available flow control devices .
Operation and Setup
CNA-Series heaters supply an unlimited amount of hot water with specific flow and temperature rise capabilities .
These heaters are energy efficient, reliable, and provide optimum performance in the most demanding applications .
Application Specific Requirements
The CNA-Series can be used in many different applications that require custom tuning for specific applications to
maximize performance of the heater .
For use in a recirculation loop, the incoming loop temperature should not exceed 140°F (60°C) to ensure water
cooling of the solid state relay .
For applications utilizing quick close valves or solenoid valves, it is important to install a hammer arrestor or surge
tank close to the point of use to absorb pressure spikes .
ASME CERTIFICATION:
Please verify if your State Boiler Code requires ASME Certification and that you have the
proper heater to meet your code requirements prior to installation .
Installation Considerations
Maximum operating pressure: 160psi .
Minimum flow activation: 1 .5 gpm
SCCR Rating
Keltech Electric Tankless Water Heaters are certified by ETL to UL499, UL50E and CSA22 .2 No 88 . It is designed to
comply with UL508A .
The SCCR load rating is marked on the enclosure per UL508A requirements for Water Heaters controlling a resistive
heating element load .
WARNING For safe operation of the heater, observe all the warning labels as indicated.