5
Ductwork Requirements
Install the conditioned air plenum, ducts and air filters (not
provided) in accordance with NFPA 90B Standard for the
Installation of Warm Air Heating and Air-Conditioning Systems
(latest edition).
For the best performance, draw air from the central part of the
building and return it to the outer areas of the building.
Insulated flexible duct may be used on the discharge air supply
side of the dehumidifier to reduce air noise from the fan.
Flexible duct is recommended on all connections to reduce noise
and vibration transmitted to rigid ductwork in the building.
Duct Size
■ For supply duct lengths up to 25 ft, use a minimum of 10"
diameter round or equivalent rectangular duct. For return
duct lengths up to 25 ft, use a minimum of 12" diameter
round or equivalent rectangular duct.
■ For supply duct lengths longer than 25 ft, use a minimum of
12" diameter or equivalent rectangular duct. Grilles or
diffusers installed on the duct ends should not restrict airflow.
For return duct lengths longer than 25 ft, use a minimum of
14" diameter round or equivalent rectangular duct.
■ For two or three isolated areas that do not have any heat or
air conditioning ductwork, use a minimum of 8" diameter
branch duct to each area.
■ For four or more isolated areas with stagnant air, use a
minimum of 6" diameter branch duct to each area.
Electrical Requirements
Recommended Grounding Method
■ A 110- to 120-volt, 14.5 FLA amps, 60 Hz, AC only 20-amp
fused, grounded electrical supply is required.
■ All field wiring must be done in accordance with National
Electrical Code requirements, applicable requirements of UL,
or local codes, where applicable.
INSTALLATION INSTRUCTIONS
Inspect Shipment
This whole house dehumidifier is shipped in one package,
completely assembled and wired.
1. Check the dehumidifier rating plate to confirm specifications
are as ordered.
2. Upon receipt of equipment, inspect it for possible shipping
damage. Examine the dehumidifier inside the carton if the
carton is damaged.
If damage is found, it should be noted on the carrier’s freight bill.
Damage claims should be filed with the carrier immediately.
Claims of shortages should be filed with the seller within 5 days.
NOTE: If any damages are discovered and reported to the carrier,
do not install the dehumidifier, because your claim may be
denied.
WARNING
Electrical Shock Hazard
Use 12 gauge solid copper wire.
Electrically ground dehumidifier.
Connect ground wire to green ground lug.
Failure to follow these instructions can result in death,
fire, or electrical shock.
WARNING
Fire Hazard
Read and follow all instructions provided for
installation, service, alteration, or maintenance.
Failure to follow these instructions can result in death
or fire.
WARNING
Excessive Weight Hazard
Use two or more people to move and install
dehumidifier.
Failure to do so can result in back or other injury.