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Cabinet Divider
and Seals
Reactivation Air Outlet
Process Air Inlet
Heater
Principle of Operation
Process Air Outlet
Desiccant Wheel
Desiccant Wheel
Drive and Chain
3 Installation Instructions
Proper installation of this dehumidifier is very important for
maximum service and performance. Refer to “Installation
Instructions for the Phoenix 1200 Dehumidifier” label on top
of machine above control panel.
3.1 Inspection
Thoroughly inspect the dehumidifier inside and out to insure
that no damage has occurred during shipping. (If any damage
is found, a claim should be made to the shipping company
immediately).
3.2 Placing The Machine
Remove any external packaging or crating.
Note: The supplied casters are stored in the process outlet
plenum for shipping. Remove and install casters prior to
operating machine. The dehumidifier should be carefully set
in place before connecting hose ducts.
3.3 Electrical
All local and state codes must be strictly adhered to and good
electrical practices should be followed to achieve the best
installation possible. The supplied power cord must have a
proper plug or connection as required. Overload protection
should be sized for 40 amps @220/1/60.
(See Electrical Schematic drawing in the back of this manual
for internal wiring).
The power supply should be checked to be certain that the
supply voltage agrees with the equipment nameplate. Serious
damage to motors and controls can occur if incorrect voltage
is applied.
3.4 Duct Work
The duct work requirements for these systems are much
more critical than conventional air conditioning systems.
ALL SUPPLY AND RETURN AIR DUCT HOSES FOR THE
DEHUMIDIFIER MUST BE AIR AND VAPOR TIGHT. This is
extremely important for proper dehumidifier performance.
Even though the dehumidifier is removing moisture, it may
not perform properly if moisture enters the dry air stream
through leaks in the ductwork. The air ducts must be properly
sized to keep pressure losses at a minimum, and prevent
this loss from exceeding the designed fan static capability.
It is important to insure that the reactivation discharge
air does not enter the process or reactivation inlets. See
“Specifications” drawing for fan external static pressure.
4 Operating Instructions
Refer to “Installation Instructions for Phoenix 1200
Dehumidifier” label on top of machine above control panel.
The Phoenix 1200 dehumidifier comes complete ready for
operation. All that is required is to provide the proper power
source and duct connections.
4.1 Airflow
The dehumidifier uses two distinct air streams. This
eliminates the requirement to “balance” the air streams.
4.2 Desiccant Wheel Rotation
A fixed speed gear motor, timing pulley, and timing belt rotate
the desiccant rotor at the proper speed. The belt tension is
maintained with a spring loaded roller type tensioner.
5 Start-Up
At this point it is assumed that the installation is complete
and that the recommendations and instructions have been
followed. The following will outline the proper procedures for
starting and adjusting the dehumidifier.
5.1 Manual Operation
If the dehumidifier is to be run continuously, without the use
of the installed automatic humidistat, place the “HAND/OFF/
AUTO” switch into the “HAND” position. The unit will energize,
as indicated by the green “UNIT RUN” light, and commence
dehumidification.
5.2 Automatic Operation
If the dehumidifier is to be operated by the installed
humidistat, adjust the humidistat to the desired set point, and
place the “HAND/OFF/AUTO” switch into the “AUTO” position.
Provided that sensed relative humidity requires dehumidifier
operation, the unit will energize, as indicated by the green
“UNIT RUN” light, and commence dehumidification.
