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Specifications
• Model: DH70
• Capacity: 70 pints/day, (3.25lbs./hr) @ 80°/60%RH
• Electrical: 110-120 VAC, 6.7 FLA Amps, 60 Hz, grounded
• Operating Return Air Temp. Range: 50°F min., 90°F max.
• Air Flow:
• 280 CFM without external ducting
• 235 CFM @ .30 IWG external static
• 195 CFM @ .50 IWG external static
• Refrigerant Charge: 17.5 oz. R-410A
• Duct connections: Return duct flange: 8" Round, Outlet 8" Round,
• Filter Size: High Efficiency (MERV 11): Pleated 11-3/4" X 11-3/4" X 2"
• Size (Clearance): 14" Height x 26" Width x 14" Depth, 12" minimum front or rear clearance for filter service.
• Weight: 65 pounds (Shipping Weight 80 pounds)
Read the installation operation and maintenance instructions carefully before installing and using this unit.
Proper adherence to these instructions is essential to obtain maximum benefit from the DH70 system.
Installation contrary to these guidelines or lack required maintenance will void warranty.
Unit Location
The DH70 can be installed in a variety of locations to meet the
owner's needs as listed below. In all cases keep the following
cautions in mind:
• The unit is designed to be installed indoors in a space that is
protected from rain, flooding and/or other forms of excess water.
Unit is not designed to be exposed to chlorinated pool conditions
or spaces where unit will be exposed to corrosive chemicals or
conditions.
Install the unit with space to access the front panel for
maintenance and service. Also allow easy access to the filter
cover panel. DO NOT INSTALL THE UNIT WITH THE FRONT
PANEL OR FILTER COVER PANEL INACCESSIBLE.
• Avoid discharging the air directly at people, over the water in pool
areas, or other areas or objects where dehydration or evaporation
of moisture is not desired.
• If used near wet areas, be certain there is NO chance the unit could fall into the water or be splashed and that it is
wired into a GROUND FAULT INTERRUPTER protected circuit (see local codes for other requirements).
• A secondary drain pan MUST be placed under the unit if installed above a living area or above an area where water
leakage could cause damage (see local codes for other requirements).
• DO NOT locate the DH70 directly on structural members where noise or vibration may be objectionable. The DH70
is equipped with adjustable support feet to raise and level the unit from the mounting surface, these adjustable feet
should be utilized to provide improved drainage from the drain pan and should be adjusted to tilt slightly toward the
drain utilized.
FORM NO. DH70 REV A
Read and Save These Instructions
By GeneralAire
DH70 - Crawl Space, Attic or Basement
Whole House Dehumidifier
Installation & Owners Manual
®
13.00
8"
Return
LEFT SIDE VIEW
Ajustable Legs 1/4"- 1"
27.25
TOP VIEW
23.25
Humidistat
Low Voltage Terminal
RIGHT SIDE VIEW
DH 70
Humidistat
Supply
FRONT VIEW
Service Access
Grounded 120 V Power Cord - 90"
3/4" NPT Drain
BACK VIEW
3/4" NPT Drain Option
Factory Installed Plug
8"
1
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Table of Contents
Summary of Contents for HealthyAire DH70
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Page 1: Whole House Dehumidifier
Read the installation operation and maintenance instructions carefully before installing and using this unit. Proper adherence to these instructions is essential to obtain maximum benefit from the DH70 system. Installation contrary to these guidelines or lack required maintenance will void warranty. -
Page 2: Electrical Requirements
• In a whole house system, the DH70 should be located near the existing air handling system to minimize the required ductwork for connecting of the DH70 system. When the remote control option is used, the control (humidistat) unit must be located in the space that is to be conditioned. The control (humidistat) may be low voltage (24 volt) and should be connected to the DH70 with code approved, low voltage thermostat cable. • When a remote Humidistat is utilized, set the unit mounted humidistat to the “OFF” position. • When locating the DH70 in areas of extreme heat or high humidity, >120-degrees/90% humidity, additional external insulation may be required to prevent undesired condensation on the exterior of the unit. Electrical Requirements • The DH70 are equipped with an appliance cord with ground prong and may be plugged directly into a grounded 3 prong, 120 volt, 15 amp household type convenience outlet. If used in a wet area such as an indoor pool, spa room, or an area prone to flooding (basement or crawlspace), a ground fault interrupter protected circuit is required. In all cases local codes precede over all installation and wiring recommendations. • Do not remove ground prong. Do not use an adaptor. Do not use an extension cord. - Page 3 C. Installation in a Basement or Crawl Space with an Existing Forced Air HVAC System (Whole House Dehumidification) If the structure in which the DH70 System is to be installed has an existing forced air HVAC system, and this system serves the areas that are desired to be controlled, utilize the HVAC system to make the DH70 System installation easier and provide better whole house type system performance. Basement or Crawl Space Installation: Install a separate 8” return for the DH70 in a central area of the structure or if the return ducting is adequate tap into the existing return duct system near the return air grill. Duct the supply of the DH70 System to the return ducting of the existing HVAC system. The fan interlock provision must be utilized for proper system performance. D. Installation in an Attic with an Existing Forced Air HVAC System (Whole House...
- Page 4 F. Installation in a Structure with No Existing Forced Air HVAC System (Whole House Dehumidification) When installing the DH70 in a structure that does not have a forced air HVAC system, a single return for the DH70 should be installed in central open area of the structure. DO NOT locate the return in a bathroom or a kitchen. The supply of the DH70 should be located in the remote areas of the structure (such as bedrooms, den, etc.). By ducting this way, the air inside the structure will circulate through the DH70 to be filtered and dehumidified. 5” diameter duct is recommended for branches to the bedrooms, 6” diameter duct is recommended for branches to larger areas. G. Installation in a Sealed Crawl Space or Sealed Attic (Spot Dehumidification) When installing the DH70 in sealed crawlspace or sealed attic, a single return for the DH70 should be installed in central open area of the structure. If the area is open without partitions return ducting is not necessary. Supply ducting is recommended to enhance the performance of the system, a minimum length of supply duct, 3’ to 6’ will aid in air distribution. If the area(s) being served are divided by walls or partitions, a supply and return duct system is recommended. In all cases sound duct design practices must be followed such as those provided in ACCA manual “D”, or ASHRAE’s “Fundamentals of Air System Design”. Wiring...
- Page 5 Supply Air Out Side Air (OSA) Hood Air Handler With Bug Screen 24 Volt Motorized Damper ( Power Open- Spring Closed) Optional Outside Air Ventilation DH 70 Operation The DH70 is designed to deliver dehumidified, filtered air to the living space, and is equipped with an onboard humidistat and fan control and can be equipped with various accessories to enhance its operation, including a remote humidistat, and your system may incorporate any or all of the described operational components It is recommended that the indoor environment maintain a maximum relative humidity level of 50% to 60%. Other factors may dictate a relative humidity level different than the recommended, such as musical instruments, antiques, books/papers, or special situations. Winter minimum humidity levels of 30-35% may not be attainable without supplemental humidification (Humidifier), and may not be desired during times of low outdoor temperatures. System Variations: Humidity Control - Standard The system may be installed as free standing or incorporate ducting to an area or existing heating/cooling system.
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Page 6: High Efficiency Air Filter
Typical System Operation Sequence Upon the relative humidity exceeding the humidistat set point, normally by approximately 3%, the humidistat will energize the dehumidification and air circulation components of the DH70 (note the time delay on some electronic humidistats). If the DH70 system is connected and interlocked with an existing Heating/Air conditioning system, this systems circulation fan will also be energized. The DH70 will continue to operate until the humidity level is reduced to the set point selected on the humidistat and then will cycle off. During this cycle, the air circulated through the DH70 system will be filtered and dehumidified. If an outside ventilation air duct has been installed, fresh air will be filtered and dehumidified and introduced to the space during this cycle. Coil Freeze Protection (Auto Defrost) Maintenance High Efficiency Air Filter The DH70 is supplied with a 2” pleated high efficiency air filter. The 2” filter is rated MERV 11, and is more efficient than standard air filters and is able to catch much smaller particles that can aggravate allergies. Operating the unit with a dirty filter will reduce dehumidifier capacity and efficiency and may cause the compressor to cycle off and on unnecessarily. Under normal operating conditions, the filter will last approximately 6 months. However, in high particulate concentrations more frequent replacements may be required. It is recommended that the filter be inspected regularly for the first three to four months to determine the loading and correct replacement intervals. Your installation contractor should be contacted for assistance. To access the air filter, remove the filter access panel from the Front or Back side of the unit, marked “Filter Access”. The filter should be readily visible and can be removed by pulling it straight out of the unit. Replacement filters can be purchased from your installation contractor or ordered from the factory if a local representative is not available. DO NOT operate the unit without the filter, or with a less effective filter than originally supplied. The heat exchange coils inside the unit could become clogged and require disassembly to clean. FAILURE TO MAINTAIN SERVICE AND UTILIZE CLEAN FILTERS WILL VOID WARRANTY. -
Page 7: Limited Warranty
Limited Warranty Applies in U.S.A. and Canada Only FAILURE TO MAINTAIN YOUR EQUIPMENT WILL VOID THIS WARRANTY COVERED EQUIPMENT The following equipment is covered by the Limited Warranty: General Filters, Inc. Whole House Dehumidifier Units: DH70 (“Covered Equipment”) TWO (2) YEARS COVERAGE - RESIDENTIAL APPLICATIONS DH70 Parts warranted by General Filters, Inc. (“Company”) for a period of two (2) years from the date of the original installation, when installed in residential applications (“Limited Warranty Period”). “EXTENDED COVERAGE EQUIPMENT”: COMPRESSORS DH70 - Five (5) Years. Compressor warranty is five (5) years from the date of the original installation in all residential applications (“Extended Warranty Period”). (Note, commercial applications warranty is 2 years.) EXCLUDED COMPONENTS The following components are not covered by this warranty: cabinets, cabinet pieces, air filters, driers, refrigerant, refrigerant line sets, wiring, fuses, and unit accessories. - Page 8 LIMITATIONS OF REMEDIES OWNER’S SOLE AND EXCLUSIVE REMEDY UNDER THE ABOVE LIMITED WARRANTY AND COMPANY’S ENTIRE LIABILITY THEREUNDER, SHALL BE, AT THE SOLE OPTION OF COMPANY, REPLACEMENT OR REPAIR OF SUCH COVERED OR EXTENDED COVERAGE EQUIPMENT AND ITS COMPONENTS (“COMPONENTS”) BY COMPANY OR COMPANY’S AGENTS ONLY. REFRIGERANT, PIPING, SUPPLIES, TRANSPORTATION COSTS, LABOR COSTS INCURRED IN REPAIR OR REPLACEMENT OF SUCH COMPONENTS ARE NOT INCLUDED. THIS DISCLAIMER AND EXCLUSION SHALL APPLY EVEN IF THE EXPRESS LIMITED WARRANTY AND LIMITED REMEDY SET FORTH HEREIN FAILS OF ITS ESSENTIAL PURPOSE. OWNER ACKNOWLEDGES THAT NO REPRESENTATIVE OF COMPANY OR OF ITS AFFILIATES OR RESELLERS IS AUTHORIZED TO MAKE ANY REPRESENTATION OR WARRANTY ON BEHALF OF COMPANY OR ANY OF ITS AFFILIATES OR RESELLERS THAT IS NOT IN THIS AGREEMENT. LIMITATIONS OF LIABILITY General Filters, Inc. makes no express warranties other than the warranty specified above. All implied warranties, including the implied warranties of merchantability and fitness for a particular purpose, are excluded to the extent and for a period legally permissible. Should such exclusion or limitation of the warranty be unenforceable, such implied warranties are in any event limited to a period of one (1) year. Liability for special, incidental, direct, indirect, collateral and consequential damages is excluded. Some states do not allow limitation of incidental damages, so the limitations or exclusions may not apply to you. General Filters, Inc. will not pay electricity or fuel costs, or increases in electricity or fuel costs, for any reason whatsoever, including additional or unusual use of supplemental electric heat. This warranty does not cover lodging expenses or labor charges. General Filters, Inc. shall not be liable for any default or delay in performance under this warranty caused by any contingency beyond its control. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state. APPLICABLE LAW AND VENUE ANY ARBITRATION, ENFORCEMENT OF AN ARBITRATION OR LITIGATION RELATED TO THE PRODUCT WILL BE BROUGHT EXCLUSIVELY IN OAKLAND COUNTY, STATE OF MICHIGAN, AND CUSTOMER CONSENTS TO THE JURISDICTION OF THE FEDERAL AND STATE COURTS LOCATED THEREIN, SUBMITS TO THE JURISDICTION THEREOF AND WAIVES THE RIGHT TO CHANGE VENUE. CUSTOMER FURTHER CONSENTS TO THE EXERCISE OF PERSONAL JURISDICTION BY ANY SUCH COURT WITH RESPECT TO ANY SUCH PROCEEDING. If any term or condition of this Limited Warranty is found by a court of competent jurisdiction to be invalid, illegal or otherwise unenforceable, the same shall not affect the other terms or conditions hereof or thereof or the whole of this Limited Warranty. Any delay or failure by Company to exercise any right or remedy will not constitute a waiver of Company to thereafter enforce such rights Keep this warranty and your sales slip together for future reference. You must provide proof of purchase or installation date for in- warranty service. Write down the following information about your Dehumidifier to better help you obtain assistance or service if you ever need it. You will need to know the complete model and serial number. You can find this information located on the rating plate on the outside panel for all models. Unit Model Number ___________________________ Serial Number _______________________________ Installation Date______________________________...
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