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Keltech CNA-108 Installation Manual

Manual is about: CNA-Series Tankless Heater

Summary of CNA-108

  • Page 1

    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 installation 215-1814 rev. C; ecn 150010 © 2015 keltech page 1 of 20 7/13/2015 cna-series tankless heater models cna-36 cna-54 cna-63 cna-72 cna-108 cna-126 cna-144 cnar-...

  • Page 2: Danger

    2 cna-series tankless heater installation 7/13/2015 keltech • 215-1814 rev. C; ecn 150010 danger tipover hazard. System can crush you resulting in serious injury or death. Read and follow precautions in this installation manual for instructions on how to safely transport and mount. Do not transport ...

  • Page 3: Pre-Installation Information

    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 t...

  • Page 4: Storage Instructions

    4 cna-series tankless heater installation 7/13/2015 keltech • 215-1814 rev. C; ecn 150010 storage instructions notice! Keep keltech electric tankless water heaters stored in original packaging until installation. Recommended storage criteria: store keltech electric tankless water heaters where tempe...

  • Page 5: Mounting Heater

    5 installation cna-series tankless heater keltech • 215-1814 rev. C; ecn 150010 7/13/2015 mounting heater 1 warning high voltage shock. Disconnect power supply before performing any work inside the heater enclosure. For best results, install heater as close as possible to the point of use. Installat...

  • Page 6: Plumbing Installation

    6 cna-series tankless heater installation 7/13/2015 keltech • 215-1814 rev. C; ecn 150010 plumbing installation 2 b install one union on the water inlet side of the heater and another union upstream of the 100 mesh (150 micron) y-strainer . Install one union on the water outlet side of the heater an...

  • Page 7: Electric Installation

    7 installation cna-series tankless heater keltech • 215-1814 rev. C; ecn 150010 7/13/2015 electric installation 3 b using a hole punch, cut a hole the proper size for conduit connection; large enough for the wire size for each heater . The connectors need to be rated nema4/4x to ensure proper sealin...

  • Page 8: Start Up Check List

    8 cna-series tankless heater installation 7/13/2015 keltech • 215-1814 rev. C; ecn 150010 start up check list 4 plumbing system is set in a vertical, level, and upright position with the outlet located at the top . System is mounted by legs (2) bolted to the floor (3/8" dia . Minimum) . Confirm inst...

  • Page 9: Start Up

    9 installation cna-series tankless heater keltech • 215-1814 rev. C; ecn 150010 7/13/2015 start up 5 a slowly turn on water supply to the unit with the enclosure door open and the breaker in the off position . C turn off the connected process and check the entire system to verify leak-free installat...

  • Page 10: Digital Controller Operation

    10 cna-series tankless heater installation 7/13/2015 keltech • 215-1814 rev. C; ecn 150010 digital controller operation 6 the preprogrammed digital controller is mounted through the bezel on the enclosure door. The digital controller will be powered but the bottom display will read off until water i...

  • Page 11

    11 installation cna-series tankless heater keltech • 215-1814 rev. C; ecn 150010 7/13/2015 perform operational test no. 1 perform operational test no. 2 7 8 a start the water flow through the heater by starting the process or fixture this heater is connected to in order to activate heater . A turn o...

  • Page 12

    12 cna-series tankless heater installation 7/13/2015 keltech • 215-1814 rev. C; ecn 150010 output heating capacity is reduced if these heaters are installed on 415v, 400v or 380v 3-ph . Contact the factory to supply this information . Satisfactory performance of the heater is dependent upon a specif...

  • Page 13: Product Options

    13 installation cna-series tankless heater keltech • 215-1814 rev. C; ecn 150010 7/13/2015 product options gf (ground fault): detects electrical leakage from external sources to protect equipment, electronics, and the heat exchanger from being damaged in the event of a power fault . After turning on...

  • Page 14: Maintenance

    14 cna-series tankless heater installation 7/13/2015 keltech • 215-1814 rev. C; ecn 150010 maintenance preventative maintenance is important for optimal performance of the heater . To ensure the heater works properly, always keep the inside of the enclosure dry . Moisture inside an enclosure increas...

  • Page 15

    15 installation cna-series tankless heater keltech • 215-1814 rev. C; ecn 150010 7/13/2015 troubleshooting for controller problem solution no power verify power is on . Check continuity of all internal fuses in control transformer, heating elements or optional fused disconnect circuits . Check all f...

  • Page 16

    16 cna-series tankless heater installation 7/13/2015 keltech • 215-1814 rev. C; ecn 150010 troubleshooting using the flow limit control board (flcb) problem solution the heater does not work or works intermittently . Check that the flow sensor located at the inlet is spinning with water running . Ch...

  • Page 17: Exp2Cfpm Installation Notes

    17 installation cna-series tankless heater keltech • 215-1814 rev. C; ecn 150010 7/13/2015 special installation and 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 o...

  • Page 18: Purge Gas Supply Notes

    18 cna-series tankless heater installation 7/13/2015 keltech • 215-1814 rev. C; ecn 150010 purge gas supply notes an alarm shall be provided to indicate failure of the protective gas supply to maintain the required pressure . Piping for the protective gas shall be protected against mechanical damage...

  • Page 19: Is Installation Continued…

    19 installation cna-series tankless heater keltech • 215-1814 rev. C; ecn 150010 7/13/2015 is installation continued… all quarter turn latches in the door of the pe must be fully latched for proper operation . Power to the pe must be turned off before opening the enclosure . Warning this pressurized...

  • Page 20

    20 cna-series tankless heater installation 7/13/2015 keltech • 215-1814 rev. C; ecn 150010 special installation maintenance routine maintenance of the system (every 6 months) recommended maintenance of the systems is as follows: repeat commissioning test at least every six months . The test includes...