Installing EPD50 -EPD30 / DH1200-DH800 dehumidifiers

Using Dryfan® technology
EPD30 & EPD50 are the USA model References.
DH811 & DH1211 are the 110V versions of the DH800 & DH1200 220V EU models

Professional grade dehumidifiers for home use. Designed to work all day every day safely

one DEHUMIDIFIER can solve the HUMIDITY problems for the whole home

EPD50 / DH12XX

The dehumidifier can be placed in many places out of sight including in the attic,cellar, ceiling voids and even in cupboards.

EPD50 / DH12XX has a more powerful turbo fan so longer ducting lengths can be added. Air can be drawn through several vents by ducting to the unit, dried then ducted to a central vent in the home to recirculate.

When ducting is used it is advisable to use an external humidistat EPHUM24DF to get a faster reaction time to changes in humidity. Also draw air from bedrooms or bathrooms to prevent any feeling of draughts.

EPD30 / DH8XX

The dehumidifier is an ideal space dryer. Put in a room, connect the exhaust and simply dry the space. The room can be any room in the home.

Both models are perfect even for outside spaces such as holiday homes & garages as they work below freezing and are unaffected by frost.

Also, both models are very portable so can be carried to places for temporary drying such as boats, RVs & vacation homes.

The EPD50 / DH12XX uses a turbo fan and can duct dry air out. The EPD30 / DH8XX has an axial fan and no exhaust option for dry air.

EPD50 / DH1200 LOCATING IN AN ATTIC

A popular location for the EPD50 / DH1200 is in the attic or in a void in the attic.

1, Exhaust the wet air through a duct to an overhang eaves. It is also possible to put the exhaust duct through the gable end of the home. In both instances a suitable vent cover should be used to prevent animals entering the duct and help prevent any wind blowing back into the exhaust. Ensure the exhaust is on a slight decline or insulate the exhaust.

2, Take humid air from a several points whether bedrooms or bathrooms. Easiest is just to or the worst affected room such as the bathroom. Use Y-connectors to increase the number of inlets. Blowing dry air into these rooms may feel draughty especially in the the bathroom.

3, DryAir can be exhausted to one central point usually on the landing area at the top of the stairs. Moisture in the home will migrate upwards from the lower floor/s. The convector current in the home up the stairs will also help to disperse or mix the dry air. Air humidity in the home will always try to equalise.

4, Leave doors slightly ajar to promote air flow around the rooms

5, A humidistat is built into the EPD50 / EPD1200. However, when ducting is fitted to the dehumidifier, it may be necessary to use an external humidistat such as EPHUM24 which fits in seconds. This humidistat can be placed ideally on the top of the stairs or next to the home heating controls for more accurate monitoring of the air and improve reaction time.

6, The filter of the dehumidifier will need to be cleaned periodically. To avoid having to go into the attic or ceiling void to clean the filter, consider adding a suitable filter grill to the inlets that includes a filter built-in. These can then be periodically cleaned rather than the air filter on the dehumidifier

7, On longer duct runs, consider using wider than prescribed to increase air flow to maintain the level of airflow. See below.

8, A power supply to the dehumidifier should be from the mains supply. Although, the maximum power consumption is only 500-550 Watts, power should not be taken from the any lighting circuit that is often readily accessible in the attic area.

9, Set the RH (Relative Humidity) control to a low (10%) for typically 2-3 weeks. It will work continuously. After the humidity in the home is under control, increase the RH level to a higher level that is right for your home typically 65%.

10, Periodically clean the inlet grill filter.

Click Images to Enlarge

Easiest Installation

Take air from the bathroom.

That bathroom inlet grill should have an air filter included and cleaned periodically.

Exhaust dry air to the central landing of the home through a suitable vent.

Keep doors slightly ajar to dehumidify the whole home.

Exhaust wet air to the gable end or to the eaves on a slight decline on the duct.

Take two weeks of continuous use to dry the fabric of the home.

Set the in-built humidistat to a level right for your home.

ALL you need to do is clean any air inlet grill periodically

That’s all you have to do!

Guide for Domestic Applications with Desiccant Models

Ducting Vapour Upwards aND eXTENDING dUCTS

As vapour, water can indeed be made to go upwards. Take care not to let any condensation that can build in the exhaust duct run back into the dehumidifier if the exhaust is inclined.

eXTENDING dUCTS

Ducting Can be Extended Greater Than What is Prescribed in the User Manual

Avoid sharp bends which can reduce performance between 15-25% depending on ducting material.

Try to keep all ducts as short as possible & minimum bends to maximise airflow. If spiral wound flexible ducting use ensure pulled tight to minimise air resistance. Use more smooth plastic or metal ducting for maximum efficiency. Ensure access to the air filter is possible or use an external air filter to the air input

Wider ducting than prescribed can be used to improve air flow and performance if longer ducting lengths are being used. Check all air flows before ducts are fitted and after to compare performance.

Extend ducting further by widening the ducts prescribed. Wider ducting will give less air resistance. There needs to be air flow for internal cooling of the dehumidifier else it will cut out an need resetting. The dehumidifier power draw is self regulating for any air flow however performance or water extraction level will be affected. In the example, double duct diameter to triple the prescribed length.

Dehumidifier selector home dehumidifiers by Ecor Pro

Select The Right Model

All models can be used in the same 3-Hole mode to dry even the largest home

You may need separate consideration for Garages, Conservatories, Crawl Spaces or Attics

use under the home in crawl spaces, cellars or basements

Keep the air circulating around the space using a duct in or out to help distribute air

Both dehumidifiers are ideal for crawl spaces. Dry air will equalise in the space but it is important there is a flow of air to prevent dead spots. Pockets of dry or damp air in the room being dried. Use ducting if needed to help circulate & distribute air. It is better to vent trough a duct rather then feed air in via a duct. However, ducting air both in and out is also possible.

Allow air to flow around the space. Avoid “dead spots” of dry air.

External air vents can be shut off as there will normally be enough air to replace the exhaust air through other slight openings in the room. Very few rooms are actuallly air tight.

Garage Installation

Rule of Thumb Guide All Installed In Similar Fashion

EPD30 / DH800 – 1 Car Garage

EPD50 / DH1200 – 2 Car Garage

EPD150 / DH2500 – 3 Car Garage

See Garage Page Here

Guide for Commercial Applications with Desiccant Models

Select The Right Model for Typical Commercial Applications

Information is should be classed as a rule of thumb. Consider the average temperature the dehumidifier will be working in.

Difference between two Smaller Desiccant models

There is no outlet flange to attach a duct on the smaller dehumidifier

USA “Pro” & European “Inox”

All DH & EPD models are mild steel with tough epoxy paint finish. The USA “Pro” versions & Inox units sold in Europe and the rest of the world are Stainless Steel.

Boats & Catering for Hygiene

Stainless steel models are often used in boating applications, for storing food & catering environments where the casing is more resistant to salt or cleaning with harsh chemicals.

Exhaust Duct

Place in the room to be dried in any orientation even upside down or on the walls. Put the exhaust to the outside even vertically upwards. If there is a risk of condensation in the pipe returning back to the dehumidifier (either long duct length or the duct is in a cold environment), either lag exhaust or put on a decline. A condensation trap can also be used. See below

Mounted on it’s side, secured with special feet that swivel out. A public toilet installation ducting moisture through an extractor fan. The extractor fan was in operation when the toilet was occupied but the same vent was use to vent moisture continuously all day and every day when needed.

Note a top cover without a handle can also be obtained if required.

Mounted upside down. The curved ducting lengths have been used to help avoid dead air spots that can occur if the dehumidifier is placed in a corner of a room or an alcove. In that instance, dry air would circulate over and over in the same area and not be dispersed to the rest of the room. Two ways to overcome this; either extend the dry air outlet with ducting or add additional fans to help circulate the air around the room being dried.

Example A – Most common installation

Actually, you don’t need to install. Just put the dehumidifier in a room and vent moisture to the outside even through a slightly opened window

EXAMPLE B simple WALL or CEILING install

Example c drying mounted out of sight

The swivel out feet on these models allow then to be anchored to any point with suitable fixings easily. Ideal for walls, boats, ceilings or vehicles

Simple Application

Put the dehumidifiers into a room in any orientation. Do not put units into corners or alcoves that restrict air movement around the room. Keep inlets and outlets away from walls that will restrict air flow.

Air will naturally enter the room from outside to replace the air being expelled in the exhaust. No room will be air tight. Should there be need to create a drying chamber see more here.

For pressure neutral drying see EPD200/DH3500.

EPD50 / DH12XX

This model can allow dry air to be ducted out. This is essential if the dehumidifier is being concealed out of sight.

It is advisable in this instance to use the EPHUM24DF humidistat which simply plugs into the unit (also fits EPD30/DH12XX if needed).

Grills can be used on the ducts to give an attractive finish.

Do not treat the dehumidifier as a fan that gives instant, totally dry air

Every time air passes through the DryFan it is dried about 30% and again by 30% for every repeated cycle through the DryFan.

DH800/EPD30 Example of a bad installation. Additional screws were used to secure the product in place through the casing which is extremely dangerous. It can damage components and could cause a risk of electrical shock.

Use should have been made of the securing feet and ducting added to ducting flanges. However, the EPD30/DH800 does not have an outlet flange so one was attempted to be constructed from foam.

The inlet filter has been removed which will eventually cause dust to build in the dehumidifier and impair performance and could cause damage.

The objective was to create drying cabinet but the construction has been made in the most ineffective way as above.

EPD50 / DH12XX

As the air passes through the dehumidifier it is dried by 30% not instantly a dried to 0% humidity. Do not consider the dehumidifier as instantly giving “dryness” to the room. There is moisture in furnishings, walls and indeed the air that naturally enters the room from outside.

See this video to understand more-

EPD30 / DH8XX

Exhausted dry air is too close to a corner or side wall. This can create “dead spots” of dry air. The dehumidifier will turn off sensing the air that has bounced off the near wall.

Try turning the dehumidifier 90° so air can go up and down the wall or make the exhaust longer to allow air to circulate better.

DRYING CABINET

The air that needs to purge the system and is vented away is around 15% of the process air and is called “Regen Air”. No home is air tight so this amount of air is nothing in comparison to what normally enters the home on an hourly basis.