Table of Contents
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215-1814 Rev. C; ECN 150010
© 2015 Keltech
Page 1 of 20
7/13/2015
Installation
CNA-Series
Tankless Heater Models
CNA-36
CNA-54
CNA-63
CNA-72
CNA-108
CNA-126
CNA-144
CNAR-108
CNAR-126
CNAR-144
Table of Contents
Pre-Installation Information . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Storage Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Mounting Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Plumbing Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Electric Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Start Up Check List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Start Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Digital Controller Operation . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Operational Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-12
Product Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-16
Special Installation & Operating Instructions . . . . . . . . . . 17-20
729 S. Grove St., Delton, MI 49046
TEL: 269-623-6395 • 800-999-4320 FAX: 269-623-6398
sales@keltech-inc.com • www.keltech-inc.com
Voltage options for models:
600V 3-phase
480V 3-phase
415V 3-phase
400V 3-phase
380V 3-phase
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Table of Contents
Troubleshooting
Summary of Contents for Keltech CNA-36
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Page 1: Table Of Contents
Special Installation & Operating Instructions . . . . . . . . . . 17–20 215-1814 Rev. C; ECN 150010 729 S. Grove St., Delton, MI 49046 © 2015 Keltech TEL: 269-623-6395 • 800-999-4320 FAX: 269-623-6398 Page 1 of 20 7/13/2015 sales@keltech-inc.com •... - Page 2 If any parts are missing, do not begin installation until you obtain the missing parts. A qualified plumber or electrician should install and service this system. Install system according to these instructions and in compliance with national and local codes. Keltech • 215-1814 Rev. C; ECN 150010 7/13/2015...
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Page 3: Pre-Installation Information
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 . -
Page 4: Storage Instructions
. Crate may not be capable of protecting the heater if left outside longer than this time frame . If the Keltech Electric Tankless Water Heater is stored in an outdoor environment, care should be taken to protect the heaters from: •... -
Page 5: Mounting Heater
If heater is installed where freezing can occur, specify Keltech's ENHT Freeze Protection option. Keltech's ENHT option must be purchased at the time of order. Do not install in areas where freezing can occur without the ENHT option listed in the model number. -
Page 6: Plumbing Installation
(762mm) Components provided by installer unless otherwise specified . Power Entrance . Holes Reference the product options sections or contact your local Bradley Representative for product options . Provided By Installer . Keltech • 215-1814 Rev. C; ECN 150010 7/13/2015... -
Page 7: Electric Installation
Installation Electric Installation WARNING All Keltech heaters must be fused in accordance with National Electric Code (NEC) for the full load amperage listed on the nameplate rating for each heater. WARNING Failure to properly ground the unit(s) per the National Electric Code could result in injury or death. -
Page 8: Start Up Check List
Appropriate conductors for unit routed through conduit and secured to power block inside the enclosure . All electrical is installed in accordance with national and local electrical codes, including fuse size and rating . Appropriate earth ground is installed to the lug provided on enclosure backplate . Keltech • 215-1814 Rev. C; ECN 150010 7/13/2015... -
Page 9: Start Up
Freezing of the heater protection. Proceed to Step F once you can cause serious damage. have completed the steps in the Special Installation & Operation Instructions or if you do not have this option . Keltech • 215-1814 Rev. C; ECN 150010 7/13/2015... -
Page 10: Digital Controller Operation
OFF - No Flow Output Indicators Output Output Temp . Output Temp . Temp . Setpoint No Flow Setpoint Temp . Temp . Setpoint Up EZ Key Setpoint Down Infinity Key Advance Key Keltech • 215-1814 Rev. C; ECN 150010 7/13/2015... -
Page 11: Operational Tests
132 .5 lpm Models 480/600V ΔT °C ΔT °C ΔT °C ΔT °C ΔT °C ΔT °C ΔT °C ΔT °C ΔT °C ΔT °C ΔT °C CNA-36 CNA-54 CNA-63 CNA-72 CNA-108 CNA-126 CNA-144 Keltech • 215-1814 Rev. C; ECN 150010 7/13/2015... - Page 12 4 . Flow rate and temperature rise in the water heating process are compatible with the heater specifications . 5 . Verify there is no additional supply of cold water entering the line downstream of the heater . Keltech • 215-1814 Rev. C; ECN 150010 7/13/2015...
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Page 13: Product Options
FDA Approved for Food Contact (Use in deionized water applications) . EXP2CFPM (Continuous Flow Explosion Proof Purge System): Keltech's EXP2CFPM option makes heaters compliant for classified areas: Class I Division 2, Groups A, B, C, D, Temp Code: T5 . The Purge System requires a supply of clean instrument air or inert gas (provided by installer) . -
Page 14: Maintenance
. Power to the heater does not need to be turned off to do this . Keltech • 215-1814 Rev. C; ECN 150010 7/13/2015... -
Page 15: Troubleshooting
Check the incoming service connection . Voltage must match name plate rated voltage . Labels are located on the cabinet door (SCCR) and on upper left of back plate (Serial Number Label) . Keltech • 215-1814 Rev. C; ECN 150010 7/13/2015... -
Page 16: Troubleshooting
All internal breakers must be in the ON position for the unit to work . For additional information on Troubleshooting or other information, please call Keltech Inc . technical support at 1-800-999-4320 . Please have Model No . and Serial No . available when seeking technical assistance . Serial No . -
Page 17: Special Installation & Operating Instructions
Tankless Water Heaters With Optional Class I Division 2 Purge EXP2CFPM Option General Information All Keltech Tankless Water Heaters with a model number suffix of – EXP2CFPM have been fitted with a Z purge system to pressurize the enclosure suitable for use in Class I Division 2 Hazardous Locations . - Page 18 Li plus inductance of interconnecting cabling is less than La fo the associated apparatus 5 . "Simple Apparatus" is a device that will not generate or store more than 1 .2V, 0,1A, 25mW or 20uJ Keltech • 215-1814 Rev. C; ECN 150010 7/13/2015...
- Page 19 “Pressurized” indicator is green! Commissioning Test Commissioning Continuous Flow Keltech Option EXP2CFPM System: 1 . Open the air or gas supply shutoff valve . 2 . Adjust the Flow Control Valve (FCV) so that the enclosure pressure rises to the point where the "Pressurized"...
- Page 20 The source of air is uncontaminated . The interlock and alarms function correctly . Approval labels are legible and undamaged . Adequate spare parts are carried . The action of pressure failure is correct . Keltech • 215-1814 Rev. C; ECN 150010 7/13/2015...