Bradley CNA Serie Installation page 4

CNA-Series Tankless Heater
Pre-Installation Information
General Information
The Bradley Tankless Water Heater Powered by Keltech
®
hot water . To insure proper performance, install the heater according to the following installation instructions and in
compliance with applicable national and local codes .
Bradley 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 Bradley 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) .
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
Standard maximum operating pressure: 150 psi (10 bar)
ASME maximum operating pressure: 160 psi (11 bar)
Minimum flow activation: 1 .5 gpm (5 .7 lpm)
Certifications
Bradley Electric Tankless Water Heaters are certified by ETL to UL499, UL50E, CSA22 .2 No 88 and NPFA 496
(for hazardous locations) and third party certified to NSF/ANSI 372 . Heaters are compliant to NEC/NFPA 70 and
Canadian Electrical Code C22 .1 .
WARNING For safe operation of the heater, observe all the warning labels as indicated.
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8/1/2021
provides instant and precise temperature-controlled
Installation
Bradley • 215-1814 Rev. G