Table of Contents
Advertisement
Quick Links
Installation
Laars H Series
Tankless Heater Models
LCTEH005, LCTEH006
LCTEH010 & LCTEHV010,
LCTEH015 & LCTEHV015,
LCTEH018 & LCTEHV018,
LCTEH025
Voltage options:
208V Single & Three-Phase
240V Single & Three-Phase
277V Single-Phase
380V Three-Phase
400V Three-Phase
415V Three-Phase
480V Single & Three-Phase
238-54232-00 REV 4/21
Doc#11099
Advertisement
Table of Contents
Subscribe to Our Youtube Channel
Related Manuals for Laars H Series
Summary of Contents for Laars H Series
- Page 1 Installation Laars H Series Tankless Heater Models LCTEH005, LCTEH006 LCTEH010 & LCTEHV010, LCTEH015 & LCTEHV015, LCTEH018 & LCTEHV018, LCTEH025 Voltage options: 208V Single & Three-Phase 240V Single & Three-Phase 277V Single-Phase 380V Three-Phase 400V Three-Phase 415V Three-Phase 480V Single & Three-Phase...
-
Page 2: Table Of Contents
Installation Table of Contents Pre-Installation Information ..............................3-4 Storage Instructions ................................4 Mounting Heater ..................................5 Plumbing Installation ................................6-7 Electric Installation ................................. 8 Start Up Check List ................................. 9 Start Up ....................................10 Digital Controller Operation ..............................11 NEMA 4/4X Digital Controller Operation ..........................12 Perform Operational Test No. - Page 3 Compliance and conformity to local codes and ordinances is the responsibility of the installer. Product warranties may be found under "Resources" on our website at www.laars.com. Separate parts from packaging and make sure all parts are accounted for before discarding any packaging material. If...
-
Page 4: Pre-Installation Information
Application Specific Requirements The H Series can be used in many different applications that require custom tuning for specific applications to maximize performance of the heater. -
Page 5: Mounting Heater
Installation Mounting Heater WARNING HIGH VOLTAGE SHOCK. Disconnect power supply before performing any work inside the heater enclosure. Installation should be performed by a qualified plumber or electrician. For best results, install heater as close as possible to the point of use. Long pipe runs are not recommended. -
Page 6: Plumbing Installation
Installation Plumbing Installation Install shutoff valve above (upstream of) the heater inlet. Components Needed: Install one union on the water inlet side of the heater (2) Union 3/4" and another union upstream of the 100 Mesh (150 Shutoff Valve micron) y-strainer. - Page 7 Installation Plumbing Installation cont…...
-
Page 8: Electric Installation
Installation Electric Installation ELECTRICAL SPECIFICATIONS FOR HEATER WARNING Install product to rated line voltage in (Single-Phase) accordance with current local and national codes and regulations. Min Wire Size WARNING All heaters must be fused in Model Voltage Amps kWatts accordance with National Electric Code (NEC) for the full load amperage listed LCTEH006J 12 AWG*... -
Page 9: Start Up Check List
Installation Start Up Check List Plumbing System is set in a vertical, level, and upright position with the outlet located at the top. System is mounted to the wall using the (4) mounting brackets on the back of the enclosure or bolted to the floor with the optional leg kit. -
Page 10: Start Up
If unit is ordered with the D1 option, the controller is shipped with this option Turn off the connected process and check the deactivated. Contact a Laars representative entire system to verify leak-free installation. to get the unlock code to activate the option. -
Page 11: Digital Controller Operation
Installation Digital Controller Operation 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 is flowing through the heater. The bottom display will then display the setpoint temperature (see Digital Controller Operation section for more information). -
Page 12: Nema 4/4X Digital Controller Operation
Installation NEMA 4/4X Digital Controller Operation 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 is flowing through the heater. The bottom display will then display the setpoint temperature (see Digital Controller Operation section for more information). -
Page 13: Perform Operational Test No. 1
Installation Perform Operational Test No. 1 Ensure the enclosure door is closed prior to performing operation test. Press the up or down arrow keys to adjust the set Set the 3-pole switch or circuit breaker to the ON temperature. The controller displays the temperature position. -
Page 14: Product Options
Output heating capacity is reduced if these heaters are installed on 415V, 400V, or 380V 3-ph. Contact a Laars representative to supply this information. Satisfactory performance of the heater is dependent upon a specific flow rate vs temperature rise capability . If the desired temperature is not achieved, please verify the following: Circuit breaker is on and rated for the maximum power draw . -
Page 15: Maintenance
Installation 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 increases the humidity, which condenses on cooler surfaces . This can cause electrical problems and reduce the efficiency of enclosure insulation. To prevent problems, perform the following: Verify the interior of the enclosure is dry . - Page 16 Installation Troubleshooting for Controller Problem Solution No Power Verify power is on . Turn power off . Check continuity of all internal fuses in control transformer, heating elements or optional fused disconnect circuits . Check all field service circuit breakers or fuses . Check system temperature limit control to make sure it has not activated due to excessive heat exchanger temperature or faulty sensor .
-
Page 17: Troubleshooting
All internal breakers must be in the ON position for the unit to work. For additional information on Troubleshooting or other information, contact Laars Technical Support. Please have Model No . and Serial No . available when seeking technical assistance . Serial No . tag is located in the enclosure on the upper left hand corner of the back plate . -
Page 18: Special Installation And Operating Instructions
Special Installation and Operating Instructions Tankless Water Heaters with Optional D1 or DC Controller Options Pin-Out Diagram for Electrical Wiring The controller is shipped with the D1 option deactivated. Contact Laars to get the unlock code to activate the ption. DC Option Pin-Out... - Page 19 Table of Parameters for DC Option: RS-485 Modbus Read/ Parameter Name Range Map 1 Map 2 Default Data Type Write H Series Meaning -1999.000 to 9999.000 °F Analog Input Float Process Value -1128.000 to 5537.000 °C None (61) Open (65) Fail (32)
Need help?
Do you have a question about the H Series and is the answer not in the manual?
Questions and answers