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Armstrong EHU-801 User Manual

Armstrong EHU-801
60 pages
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Series EHU-800 Humidifier
Installation and Operation Manual
530-EN V2.4
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Armstrong EHU-801 Specifications

General IconGeneral
BrandArmstrong
ModelEHU-801
CategoryHumidifier
LanguageEnglish

Summary

Description of Nameplate

Dimensions and Weight

Humidifier Components Part Overview

Preparation and Installation

Site selection

Location requirements for humidifier installation.

Water Quality And Treatment

Guidance on water quality for humidifier operation.

Remedies:

Solutions for water quality issues affecting humidifier.

Installation

Step-by-step guide for installing the humidifier unit.

Step 1 - Placing and wall attachment

Instructions for physically mounting the humidifier.

Step 2 - Water connection

Guide for connecting the water supply and drain.

Step 3 - Steam pipe positioning

Guidance on installing the steam dispersion tube.

Step 4 - Electrical connections

Instructions for making electrical connections to the unit.

Control Wiring

Controller / Humidistat with Safety Switches

Wiring humidistats and safety switches to the EHU unit.

Sensor

Wiring diagram for sensors used with the humidifier.

Building Management System

Connecting the EHU to a BMS.

Room Mounted Modulating High Limit

Wiring for room-mounted modulating high limits.

Duct Modulating High Limit

Wiring for duct-mounted modulating high limits.

Step 6 - Control Connection

Main Board Connection and Fuses Location

Identifying connections and fuses on the main control board.

Communications

Modbus

Connecting and configuring the EHU via Modbus protocol.

Modbus Variants List

Table of Modbus registers and their functions.

Operational Guidelines

Maintenance

Recommended maintenance and precaution

Routine checks and precautions for humidifier upkeep.

Steam Generator Maintenance

Procedures for maintaining the steam generator component.

Tank Cleaning

Steps for cleaning the humidifier's water tank.

Tank Removal and Replacement

Procedures for removing and replacing the humidifier tank.

Tank Disassembly

Detailed steps for taking apart the humidifier tank.

Valves Maintenance

Troubleshooting and repair for fill and drain valves.

Start Up Checklist

Start Up Procedure

Legacy EHU PCB Index

Control Wiring

Wiring guidance for older EHU PCB models.

Remote Information Board (Option)

Limited Warranty and Remedy

Special Warranty

Specific warranty periods for EHU-800 humidifiers.

Principle of operation

How the EHU-800 humidifier functions.

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