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Environmental Technology, Inc.
Model EDH–4 Rev E Installation and Operation Manual
LIMITED WARRANTY
ETI’s two year limited warranty covering defects in workmanship and materials applies.
Contact Customer Service for complete warranty information.
DISCLAIMER
Environmental Technology, Inc. makes no representations or warranties, either expressed or implied, with respect to the contents of this publication or the
products that it describes, and
specifically disclaims any implied warranties of merchantability or fitness for any particular purpose
. Environmental
Technology, Inc. reserves the right to revise this publication and to make changes and improvements to the products described in this publication, without
the obligation of Environmental Technology, Inc. to notify any person or organization of such revisions, changes or improvements.
The ETI logo and We Manage Heat are registered trademarks of Environmental Technology, Inc. EDH is a trademark of Environmental Technology, Inc.
Copyright © 2014 Environmental Technology, Inc. All rights reserved.
SPECIFICATIONS
Operation
Dehydrator Type
Non-Programmable, Single Can-
ister, Desiccant Dehydrator
Regeneration Method
Manual Regeneration or Replacement
Regeneration Indication
Desiccant Color Change and
Compressor Run Time
Outlet Dew Point
-40°C (New or newly regenerated
desiccant)
to -10°C (Desiccant requiring
regeneration or replacement)
Output Pressure
0.3 - 0.5 psig (34.5 mbar)
Flow Rate
6.0 scfh (2.8 lpm)
Capacity, Standard
18 scf (510 liters)
Capacity, Max
45 scf (1,274 liters)
Discharge port
Single Port: 1/8" NPT Female
(1/4" Hose Barb supplied)
Supply Voltage
100 – 240 VAC 50/60 Hz, Auto-select
Power Requirement
@120 VAC: 22 watts maxi-
mum; 8.3 watts minimum
Reliability
MTBF: 100,000 hours
Interface
Air Pressure Indication
Digital Display (English or SI)
Data Display
Pressure, Estimated Desiccant
Capacity Remaining, Error Codes
Communications Port
Alarm Relay
Alarm Relay Capacity
2 Amp @ 30 VDC
Relay Connection
6-position terminal block
Enclosure
Dimensions
5.22" × 11.63" × 7.0"
(133 mm × 295 mm × 178 mm)
Weight
7.8 pounds (3.54 kg)
Mounting
19" or 13 1/2" Rack (3U space re-
quired), wall mount, shelf or table top
Environmental
Storage Temp
-40°C to 60°C
Operating Temp
0°C to 55°C
ORDERING INFORMATION
Order Number
Description
18021
EDH–4 Low Cost Air Dehydrator (Revision A)
25016
Replacement Desiccant Canister with Desiccant for EDH-4 (Revision A)
18138
Replacement Desiccant, 32 ounces (0.95 liters)
