ACCESSORIES Condensation ManageMent
Spec-00542 I
EQUIPMENT PROTECTION SOLUTIONSSUBJECT TO CHANGE WITHOUT NOTICECOOLING1
Spec-00542
I
763.422.2211
763.576.3200
COOLING
Accessories
condensAtion MAnAgeMent
H2OMIT™ VENT DRAINS
INDUSTRY STANDARDS
Maintains UL/cUL Type 4, 4X rating when properly installed on a UL/cUL
Type 4 or 4X enclosure.
UL 508A Listed; Type 4, 4X; File No. E61997
cUL Listed per CSA C22.2 No 94; Type 4, 4X; File No. E61997
NEMA/EEMAC Type 4, 4X
IEC 60529, IP66
APPLICATION
H2OMIT™ Vent Drains allow accumulated water to drain out the
bottom of an enclosure. The UL-approved vent drains also function
as an air pressure equalizer, reducing the harmful effects of
temperature-induced vacuums that could pull water and moisture
into the enclosure.
FEATURES
• Uses gravity to remove collected liquids
• One-way mechanical shut-off when pressure is equalized
prevents water and contaminants from entering the enclosure
• Helps reduce corrosion that can limit the life of internal electrical
and electronic components
• Installs in a 7/8-in. hole in the bottom of enclosure with provided
nut or in a 1/2-in. NPT/NPS threaded conduit hub
• Installs in the bottom of mild steel, aluminum, stainless steel or
non-metallic enclosures
• Maintains enclosure’s UL Type rating when properly installed
SPECIFICATIONS
Stainless Steel Vent Drain
• Corrosion-resistant polyester material with a Type 304 stainless
steel sleeve
• 2.00-in. long x 1.38-in outside diameter
Non-Metallic Drain Vent
• Corrosion-resistant polyester material
• 2.00-in. long x 1.25-in. outside diameter
Performance Data H2OMIT Vent Drains
CATALOG NUMBERS
AVDR4NM AVDR4SS4
UNIT CONSTRUCTION
Description Non-metallic Vent Drain Stainless Steel Vent Drain
D (in./mm) 1.25/32 1.38/35
Quantity 1 1
ACCESSORIES Condensation ManageMent
Spec-00542 I
PH 763.422.2211 • FAX 763.576.3200 • HOFFMANONLINE.COMEQUIPMENT PROTECTION SOLUTIONS COOLING 2
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ACCESSORIES Condensation ManageMent
Spec-00542 I
EQUIPMENT PROTECTION SOLUTIONSSUBJECT TO CHANGE WITHOUT NOTICECOOLING3
H2OMIT™ THERMOELECTRIC DEHUMIDIFIER
INDUSTRY STANDARDS
UL 508A Listed; File No. E61997
cUL Listed per C22.2 No. 14; File No. E61997
CE
APPLICATION
The H2OMIT™ Thermoelectric Dehumidifier removes moisture
from the air within an enclosure, providing an inexpensive yet highly
effective way to protect electronic and electrical components from
condensation.
FEATURES
• Reduces corrosion that can limit the life of internal electrical and
electronic components
• Condenses moisture from internal enclosure air and standing
liquids
• Built-in drain provision with plastic hose directs collected
moisture to the Vent Drain (sold separately)
• Rotating side air vents direct recirculating air away from critical
controls
• Mounts via DIN rail on internal panel or mounts directly onto the
inside bottom of enclosure above the Vent Drain (sold separately)
• Can be used in mild steel, aluminum, stainless steel and non-
metallic enclosures
SPECIFICATIONS
• High-impact ABS shell
• Operates on 24-Volt DC power
• 4.5 A max. (84 W)
• Runs continuously above 32 Fa (power supply not included)
• Removes 8 oz. of moisture in 24 hours
• Compact 6.00-in. x 5.50-in. x 5.75-in. design
• One Thermoelectric Dehumidifier includes:
- Four feet of plastic hose
- Two hose retainers
- One double-ended hose retainer
- Six inches of Velcro®
- Seven-inch strip of DIN rail
- Two mounting screws
Must be used with UL-certified drain to remove pooled liquid from
enclosure.
aIf continual operation is not desired, a Mechanical Hygrostat (AMHUM)
can be wired to the thermoelectric dehumidifier and then set to turn the
dehumidifier on at the desired relative humidity.
VELCRO is a trademark of Velcro Industries B.V.
ACCESSORIES Condensation ManageMent
Spec-00542 I
PH 763.422.2211 • FAX 763.576.3200 • HOFFMANONLINE.COMEQUIPMENT PROTECTION SOLUTIONS COOLING 4
Performance Data H2OMIT Thermoelectric Dehumidifier
CATALOG NUMBERS
H2OMITTER
Dew Point Temperature : Percent Relative Humidity
Temp. (° F) 100% 95% 90% 85% 80% 75% 70% 65% 60% 55% 50% 45% 40% 35% 30% 25% 20% 15% 10%
110 110 108 106 104 102 100 98 95 93 90 87 84 80 76 72 65 60 51 41
105 105 103 101 99 97 95 93 91 88 85 83 80 76 72 67 62 55 47 37
100 100 99 97 95 93 91 89 86 84 81 78 75 71 67 63 58 52 44 32
95 95 96 92 90 88 86 87 81 79 76 73 70 67 63 59 54 48 40 32
90 90 88 87 85 83 81 79 79 74 71 68 65 62 59 54 49 43 36 32
85 85 83 81 80 78 76 74 71 69 67 64 61 58 54 50 45 38 32 —
80 80 78 77 75 73 71 69 67 65 62 59 56 53 50 45 40 35 32 —
75 75 73 72 70 68 66 64 62 60 58 55 52 49 45 41 36 32 — —
70 70 68 67 65 63 61 59 58 55 53 50 47 44 40 37 32 — —
65 65 63 62 60 59 57 55 53 50 48 45 42 40 36 62 — — — —
60 60 58 57 55 53 52 50 48 45 43 41 38 35 32 — — — — —
55 55 53 52 50 49 47 45 43 40 38 36 33 32 — — — — — —
50 50 48 46 45 44 42 40 38 36 34 32 — — — — — — — —
45 45 43 42 40 39 37 35 34 32 — — — — — — — — — —
40 40 39 37 35 34 32 — — — — — — — — — — — — —
35 35 34 32 — — — — — — — — — — — — — — — —
32 32 — — — — — — — — — — — — — — — — — —
Definition: Dew Point is the temperature at which condensation forms. If the temperature of the enclosure is 85 F
and the relative humidity is 80 percent, Dew Point is reached at a temperature of 78 F or below.
This means that moisture vapor will condense on any surface that is below the Dew Point temperature of 78 F.