Installation
4
Pre-Installation Information
General Information
The H Series Tankless Water Heater provides instant and precise temperature-controlled hot water. To ensure proper
performance, install the heater according to the following installation instructions and in compliance with applicable
national and local codes.
Flow rates and temperature figures are important for proper sizing If needed to meet certain temperature demands,
flow control devices are readily available See temperature rise table for specifications Contact Laars representatives for
further information on available flow control devices
.
Operation and Setup
H 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 H 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 re-circulation 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.
Installation Considerations
Maximum operating pressure: 150 psi (10 bar)
ASME maximum operating pressure: 160psi (11 bar)
Standard flow activation: 1.5 gpm (5.7 lpm)
Certifications
Electric Tankless Water Heaters are certified by ETL to UL499, cETL listed to CSA-C22 2 No 88 and third party certified to
NSF/ANSI 372.
WARNING For safe operation of the heater, observe all the warning labels as indicated.
Storage Instructions
NOTICE! Keep Electric Tankless Water Heaters stored in original packaging until installation.
Recommended storage criteria:
Store Electric Tankless Water Heaters where temperatures exceed 35°F (2°C) at all times.
Indoor storage is recommended.
Minimize excessive on-site transport to reduce risk of shock and impact damage.
Packaging
Box dimensions approx: 30" x 15" x 6" (762mm x 381mm x 152mm)
All boxes must be stacked evenly and horizontally.
Safety issues related to packaging:
Product should be transported with the care associated to packages labeled “FRAGILE” even if packaging is not
marked accordingly.
Standard safety procedures for forklift transport and large items less than 1000lbs (454 kgs) should be followed at
all times.
