Installing LARGER ECOR PRO DESICCANT dehumidifiers
Using Dryfan® technology EPD150/DH25XX & EPD200/DH35XX
EPD150 / EPD200 Full Movie
DH25XX / DH35XX Full Movie
Difference between THE LARGER Desiccant models
DON’T TREAT IT AS A FAN THAT GIVES INSTANT, TOTALLY DRY AIR
Note that the EPD150/DH25XX & EPD200/DH35XX do not have a humidistat fitted unlike the smaller EPD30/DH8XX & EPD50/DH12XX
An external humidistat will need to be fitted to regulated automatically the humidity of the air. If these dehumidifiers are mounted remotely then the humidistat should be placed in the area that needs to be monitored.
Every time air passes through the DryFan it is dried about 30% and again by 30% for every repeated cycle through the DryFan
Desiccant technology can dry to lower humidity levels in general to Compressor or Refrigerant dehumidifiers but it very much depends on the installation and ambient conditions. Indeed moisture generated in the area is being dried. The video shows the principle
Water can go upwards & the ducts can be extended
KEEP DUCTS AS SHORT AS POSSIBLE WITH MINIMUM NUMBER OF BENDS. SMOOTH DUCTING WORKS BEST OF AL.
Increasing the length of the ducts means greater air resistance and therefore less performance. It is better to keep the wet air exhaust duct (no water is produced) as short as possible and increase the length of the dry air outlet if needed.
The greater the duct length, the greater chance of condensation forming in the exhaust. Angle the duct downwards to prevent any condensate that builds in the exhaust to drain out away from the dehumidifier. Alternatively, insulate the duct to prevent condensation in colder climates.
To increase air flow use wider ducting than the one prescribed as much as possible.
Ducting considerations of DH25XX / EPD150 when used in a restoration environment. The same principles are true of any other installation
Ducting considerations of DH35XX / EPD200 when used in a restoration environment.
If spiral ducting used then try to keep number of turns as few as possible to give the least amount of air resistance in the duct. Straight plastic or metal ducting can also be used but take care that access can be given to the air filter.
rule of thumb FOR the right model for the maintaining a desired humidity level
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.
Be carefule of direct unlight or areas of high solar gain. Units will stop working in air temperatures above 40°C / 104 °F. Each unit is reset from overheating differently. If your unit stops working see this pageIs My Dehumidifier Working?
Select The Right Model for the Home
You may need separate consideration for Garages, Conservatories, Crawl Spaces or Attics
Keep ducts as short as possible. See below for more considerations on ducting the dehumidifiers.
Keep air Flowing to the extreme points of the space with ducting or additional air movers
DH35XX / EPD200 – Modes of use
This is a 4-Hole dehumidifier meaning that there are 2 separate fans inside. One for the Process-Air (Air that needs to be dried) and the Regen Air that is used to purge the wheel of moistures and is then vented away
Focussing the dry air gives faster drying times. Example of "Positive Pressure" or forcing the dry air into areas it is needed
Recirculating the air to be dried gives a compound effect and gives faster drying. This system is "Neutral Pressure" and is outside the room being dried.
Having the machine in the area being dried and recirculating the air is the most efficient way of drying. This system is "Neutral Pressure" and is inside the room being dried.
Operating below zero and can operate in sealed rooms, 4-Hole allows even cold rooms and freezers to reduce moisture problems.
EPD200 / DH35XX
Inside room being dried pressure neutral .g. cold room “4 -hole mode”. Ceiling mount with C-Clips as the picture below positioned in a food freezer.
EPD200 / DH35XX
Inside room being dried example in simple “3 hole mode” . Could have been placed with C-Clips to the wall on it’s side.
EPD200 / DH35XX
Used to make a drying cabinet in pressure neutral mode. Used for food production, industrial processes and lumber drying as well as other organic materials.Read More
DH25XX / EPD150 – Modes of use
This is a 3-Hole dehumidifier meaning that there is one fan inside. Part of the dried process air is turned around, heated and used to purge the internal adsorption wheel of moisture that can be then vented away.
15% of the air that is processed is expelled as wet air. This air needs to be replaced. Air from outside the room may be more humid. This is averted with a larger model.
Having the machine in the area being dried and recirculating the air is the most efficient way of drying. This system is "Negative Pressure. In a small enclosure, covered with plastic sheeting a frame is needed to ensure the tent maintains structure. Rooms generally are not air tight so in larger rooms air can leak under doors etc
3-hole systems have one advantage over 4-Hole systems. Around 60 Watts of energy will be retained in the process air flow with a 4-Hole system. Normally this is not a problem (Same energy as an old home light bulb) but if it is a variable air valve may be added to balance the system with regen air.
This assumes that the air from any variable inlet (variable in order to find balance of air flow) is colder than the air inside the room being dried. Typical applications will include buildings where heat generated by people is not covered fully by any air conditioning.
EPD150 / DH25XX
Freestanding drying flooded areas just on the ground
EPD200 / DH35XX Options Explained
EPD150 / DH25XX Options Explained