13
Installation
HL-Series Tankless Heater
Keltech •
215-1823 Rev. A; ECN 150023
11/24/2015
Output heating capacity is reduced on the 480V units if these heaters are installed on 415V or 380V single or three
phase .
Contact the factory 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:
1 . Circuit breaker is on and rated for the maximum power draw .
2 . Heater is drawing the proper current for the supply voltage on all the single phase or all the three phases .
3 . All phase indicator lights are lit (not flashing) indicating maximum power draw and maximum
amperage is being drawn .
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 .
Product Options
T190 High Temperature Option:
Reach and maintain temperatures as high as 190°F .
IC Temperature Lock Out:
Temperature lock out at specific °F or °C .
Low Flow (L25 & L15):
Options include 0 .25 GPM and .015 GPM for heating water at a lower flow as required .
D1 Control Interface:
Provides 4–20ma communication interface with temperature controller .
TE2 Corrosive Fluid Protection:
The TE2 option is a single layer of Xylan Fluoropolymeric coated heat exchanger
with bright annealed stainless steel elements, FDA Approved for Food Contact (use in deionized water applications) .
N4-EXP2 & N4X-EXP2 (Explosion Proof Purge System):
Keltech's EXP2 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) . This supply maintains a positive internal pressure and prevents the
enclosure from filling with flammable gasses, dusts or vapors from the ambient environment . Complete installation
provided in this manual .
N4X (NEMA 4X Enclosure):
The optional NEMA 4X corrosion resistant enclosure is designed for harsher
environments and made from 16 gauge 304 stainless steel . The NEMA 4X enclosure can also be specified with 316
stainless steel .
N4 (NEMA 4 Enclosure):
The optional 18 gauge, NEMA 4 enclosure with ANSI61 gray, corrosion resistant paint .
