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SIDFEN ASL series - User Manual

SIDFEN ASL series
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QE Series
QM Series
AL Series
ASL Series
Over heati ng Powe r
Electric Tankless Water Heater Installation and Owner's Manual
ASL seriesAL seriesQE seriesQM series
Installation instructions for the licensed electrician and plumber. Please
read and understand these instructions thoroughly and completely prior
installation and before use. Failure to follow the installation instructions and
operating instructions thoroughly or improper use voids the warranty.
Failure to follow these instructions could cause property damage or serious
bodily injury and/or death.

Questions and Answers

  • G
    gregory37Jul 31, 2025
    How to fix SIDFEN ASL with no hot water?
    • J
      James ContrerasJul 31, 2025
      If your SIDFEN Water Heater isn't producing hot water, start by checking if the circuit breakers are off and turn them on if necessary. Also, examine whether the safety thermal cut-out has tripped and reset it if needed. Finally, ensure that the flow rate is sufficient to activate the unit by cleaning the filter screen and faucet aerator or shower head.
  • M
    Mary SolisAug 10, 2025
    Why SIDFEN ASL Water Heater water not hot enough?
    • D
      David GeorgeAug 10, 2025
      If the water from your SIDFEN Water Heater isn't hot enough, the water flow rate might be too high. Try reducing the water flow rate until the light on the front cover stops blinking. Also, verify that the voltage supplied to the unit is correct; low voltage can cause this issue. Ensure the unit receives the correct voltage.
  • H
    Heidi BondAug 21, 2025
    What to do if SIDFEN ASL Water Heater has insufficient flow?
    • D
      Debra BrooksAug 21, 2025
      If you are experiencing insufficient flow from your SIDFEN Water Heater, the shower head or rose might be blocked with limescale. Descale or renew the shower head to resolve this issue.

Summary

IMPORTANT SAFETY INFORMATION

Risk of Electric Shock!

Mandatory installation by licensed professionals and adherence to codes for all SIDFEN electric tankless water heaters.

Cautions and Important Notes

Key warnings regarding multiple electrical connections, turning off supplies, and user capabilities for temperature settings.

Mounting the Water Heater

Water Connection

Water Line Connection Procedure

Connect COLD WATER to INLET and HOT WATER to OUTLET, ensuring secure pipe mounting.

Flushing and Leak Inspection

Purge air from lines for 2-3 minutes before powering on, and then inspect all connections for leaks.

Electrical Connection

Professional Installation Mandate

All SIDFEN electric tankless water heaters must be installed by a licensed electrician and plumber in accordance with all applicable codes.

Wiring, Grounding, and Circuit Protection

Ensure correct wire gauge, circuit protection, and grounding comply with NEC and that power supply is adequate.

Connecting Wires to Terminal Block

Insert wires into terminal slots, tighten screws firmly, and secure the clamp for a reliable electrical connection.

Final Electrical Connection Checks

Double-check all wire connections are tight, correct breaker size/wire gauge used, and grounding is secure.

General Operating Instructions & Setting Output

Troubleshooting Guide

Warranty Information

SIDFEN ASL series Specifications

General IconGeneral
BrandSIDFEN
ModelASL series
CategoryWater Heater
LanguageEnglish