Herrmidifier Co G-100ES User Manual

G-100ES

Duct Mount Humidifier

Installation • Operation • Maintenance

CAUTION:
READ INSTALLATION, OPERATION, AND MAINTENANCE

INSTRUCTIONS CAREFULLY FOR SAFE OPERATION.
EXERCISE EXTREME CAUTION WHEN WORKING WITH

ELECTRICITY.

252907-001 9/04

Table of Contents

Introduction ..........................................1

Specifications ........................................2

Capacity Selection Guide......................3

Operation ..............................................3

Installation ............................................5

Mounting Locations ........................6

Maintenance ........................................7

Troubleshooting ....................................9

Description of Parts ............................11

Parts List ..............................................12

Unit Diagram ......................................13

Warranty..............................................14

1

Introduction

Introduction

The benefits of a properly humidified environment (35-50%, Relative Humidity) are many. They
include both personal comfort as well as the preservation of furniture, draperies, carpets,
wooden floors and cabinets, paintings, pianos, etc.. Your home will be more comfortable at a
lower temperature (i.e.: 68° F) at 30-40% Relative Humidity (RH) than at 71° to 72° F without
controlled humidity. Since every degree of temperature setback represents about 3% of your
heating costs, this can possibly represent a significant annual savings.

During the heating season, cold air is brought into the home and heated. When heated, this air
dries out and greatly increases its capacity to hold more moisture. By using a humidifier, a source
of water is provided to satisfy this increased moisture holding capability, rather than having it
drawn from our body surface and the surrounding hygroscopic furnishings in the home.

2

Specifications

To improve the efficiency of your humidifier, and to reduce the possibility of a health hazard, it
is recommended that you take the following precautions:

• Follow the manufacturer’s recommended cleaning and maintenance instructions.

• The amount of minerals and other impurities in a water source can vary greatly, therefore the
frequency of cleaning the humidifier also varies.

• During the heating season, check for film or scale build up on the humidifier, evaporator pad,
and all moving parts on a monthly basis and establish a proper cleaning schedule.

• Do not allow film or scale to build up on the unit, evaporator pad, or any moving part which
will reduce the efficiency of the humidifier.

• At the end of the winter humidification season, drain and thoroughly clean your humidifier
as part of the summer shut down. Be sure to install a new evaporator pad at the beginning

of the heating season before starting the humidifier.

Like your heating system and air conditioning unit, periodic maintenance and cleaning are
required to ensure the safe and efficient operation of your humidifier.

Model

Type of Unit

Duct mounting

GPD @ 140°

GPD @ 120°

GPD @ 100°

Solenoid valve voltage

Motor

Unit W x D x H

Duct Opening W x H

Shipping Weight

Standard Equipment

Features

G100ES

Power flow through

Supply

24.0

19.0

14.5

24VAC

1/20 HP - 120VAC (220-240VAC International)

13” x 11 1/2” x 18 3/4”

12 1/4” x 15 1/4”

18 lbs

Wall/Duct Mount Humidistat

Self Piercing Saddle Valve

120VAC (220-240VAC International) to 24V Transformer

Power Cord with 3-Prong Plug

Brass solenoid valve assembly

Removable motor cap allows easy access to motor for
servicing or maintenance

Cleanable & replaceable internal water filter protects
the solenoid valve

Attractive design and finish - neutral beige color

2” evaporator pad for greater surface area

Specifications

3

Capacity Selection Guide

Operation

This humidifier operates using the evaporative principle in a quiet, efficient and automatic
manner. It is constructed of the highest quality, engineering grade materials to assure superior
performance and durability. This humidifier is controlled so that it operates only when the
furnace blower is operating and the humidistat, which is installed on the cold air return duct or
in your living area, calls for humidity.

When there is a call for humidity and the circulating air blower is operating, the solenoid valve
opens and water flows into the distribution tray and trickles down through the evaporator pad.
Warm, dry air is drawn through the evaporator pad, where it absorbs moisture and is returned
to the duct, and is circulated throughout the house. There is no standing water in this humidifier,
thus reducing maintenance and handling. The drain, located at the bottom of the unit, allows
unused water to drain from the humidifier and flush away mineral deposits that have been left
behind after the evaporation process. A fluid restrictor located in the evaporator pad supply
tubing controls the amount of water flowing through the humidifier.

Do NOT attempt to control the flow of water by using the saddle valve. It is designed to be
either fully open or closed.

A felt pad located in the distribution tray distributes water evenly between the openings. The
distribution tray should be inspected annually and any plugged holes cleaned (more frequently
in areas of poor water quality).

Sq. Footage of

Home

1000

1500

2000

2500

3000

4000

Tight Home

(GPD)

0.5

3.0

5.0

7.5

10.0

14.5

Average Home

(GPD)

5.0

10.0

14.0

19.0

23.5

33.0

Loose Home

(GPD)

10.0

16.5

24.0

30.5

37.5

51.5

Air Tightness of Home

The above calculations are for reference only and are based on the following

• Inside temperature 70° F/35% Relative Humidity

• Outside Temp 20° F /70% Relative Humidity

• 8 foot ceiling height

• Internal moisture gain of one pound per hour

• Furnace on-time of 70%

This chart uses A.R.I. standard designations:

A “Tight Home” is assumed to be well insulated with vapor barriers, tight storm windows and
doors, and a dampered fireplace. Air exchange rate of .5 changes per hour.

An “Average Home” is insulated and has a dampered fire place, but there are no vapor barriers,
storm doors, or storm windows. Air exchange rate of 1.0 change per hour.

A “Loose Home” is generally one constructed before 1930, has little or no insulation, no storm
doors, storm windows, weather stripping or vapor barriers, and often no effective dampering of
fireplaces. Air exchange rate is as high as 1.5 changes per hour.