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Stulz ENS 18 A - User Manual

Stulz ENS 18 A
110 pages
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STULZ UltraSonic
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

ENS 14 A ENS 18 A
Original instructions
- Read carefully before use -
- Keep for later reference -
Index 1000720 EN
Issue 08.2016

Table of Contents

Questions and Answers

  • J
    Jessica StricklandAug 21, 2025
    Why is water escaping from the overflow of my Stulz Humidifier?
    • G
      Gary ReillyAug 21, 2025
      Water may escape from the overflow of your Stulz Humidifier for a couple of reasons: * The water supply float switch FS1 should close the supply valve when the maximum water level is reached. If the valve is open (e.g. clogging, mechanical fault), water is fed to the humidifier continuously. * If the drain is blocked, the flush valve is closed, or the unit is not correctly installed, water may escape from the overflow.
  • B
    Brandon GonzalesNov 6, 2025
    What to do if my Stulz Humidifier has no mist production?
    • K
      Kyle MillsNov 6, 2025
      If your Stulz Humidifier isn't producing mist, there are several things you can check: * Start up the unit and check the function of the control system. * Ensure the unit is getting electrical power. * Verify the control system parameters and reset if necessary, in case enabling or flush function is active, or the setpoint was reached. * Check the drinking water supply, fill valve, and drain to ensure a sufficient water supply. * Check float switches FS1 and FS2, and voltage to motherboard (CH) slot CN1 contact 1/2 and slot CN2 contact 5. * Check electrical supply H1/G1 and H2/G2. * Check the transformer. * Ensure the unit is installed correctly as described in the "Humidifier distance" section. * Check operating hours and visually inspect oscillators. * Check setpoint...

Summary

STULZ UltraSonic Humidifier Technical Manual

Safety

Proper use

Defines intended use and prohibits misuse of the humidifier.

Basic safety instructions

General safety precautions for installation and operation.

Qualification requirements for personnel

Specifies necessary qualifications for performing work on the unit.

Product description

Technical data

Provides key specifications for ENS 14 A and ENS 18 A models.

Application limits

Specifies operational limits for water quality, temp, pressure, etc.

Water treatment

Explains requirements and methods for water quality management.

Design and planning

Open-loop and closed loop control

Master;slave control cabinet for ultrasonic humidifier (USM;USS controller)

Describes the function and components of the control cabinet.

Installation

Installation clearances

Specifies required space around the unit for installation and maintenance.

In-duct installation

Guidelines for mounting the humidifier within an air duct.

Connecting water supply line(s)

Instructions for connecting demineralized water supply.

Waste water connection

Procedures for connecting the unit's wastewater drainage.

Electrical connection

Guidelines for connecting the humidifier to power.

Connecting cables between the humidifier and control cabinet

Details on connecting the humidifier to the control system.

Start-UP

Operation

Using the USM

Instructions for operating the USM control unit and its menus.

Setting the operating mode

Explains different operating modes and their applications.

Setting the setpoint

Guides on adjusting humidity setpoints via the controller.

Maintenance

Cleaning

Detailed instructions for cleaning water-bearing parts and components.

Inspecting the electrical system

Steps for checking the electrical components and connections.

Replacing oscillators and the atomizer PCB

Procedure for replacing ultrasonic mist generation components.

Troubleshooting

Stulz ENS 18 A Specifications

General IconGeneral
BrandStulz
ModelENS 18 A
CategoryHumidifier
LanguageEnglish

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