Maytag RX4000, RX4000B, RX1700 Instructions Manual

Installation Instructions

Ultra-Violet Air Purifier Residential/Commercial Duct
Installation Applications -

RX4000, RX4000B, RX1700

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment
can be hazardous due to system pressure and electri­cal components. Only trained and qualified service per­sonnel should install, repair, or service air-conditioning
equipment.
Untrained personnel can perform basic maintenance
functions such as changing lamps. All other operations
should be performed by trained service personnel.
When working on air-conditioning equipment, observe
precautions in the literature, tags and labels attached to the
unit or accessory, and other safety precautions that may
apply.
Follow all safety codes. Wear safety glasses and work gloves.

WARNING:

Before installing the RX4000, RX4000B, RX1700
or performing maintenance or service on the
purifier, turn off main power switch to unit.
Electrical shock can cause injury or death. There
may be more than one disconnect switch.

WARNING:

Use only specified replacement Lamps with your
Purifier. Use of an incorrect Lamp can result in
damage to the Purifier an/or Lamp.

GENERAL

The Maytag HVAC RX4000, RX4000B and the RX1700
residential ultra-violet air purifiers are designed to kill bacteria,
viruses, odor causing mold and fungus as well as chemical
odors and VOC’s that may be transmitted through the air
ducts of the HVAC equipment. The purifiers are installed
in the return (preferred) or supply air plenum of the HVAC
equipment. The ultra-violet band light inhibits and kills mold,
fungus, bacteria, viruses and microbial growth on 100% of the
air flowing through the 6” square aluminum tube.

Location

The preferred installation location for the purifier is in the re­turn duct as the air will be treated before the filter and HVAC
coil. If it is not possible to install in the return duct, it may be in­stalled in the supply duct. The painted steel power supply
Control Panel section of the purifier is installed on the outside
of the duct.

WARNING:

Never expose eyes or skin to ultraviolet
light from any source. The Purifier MUST be
DISCONNECTED from power source before
performing maintenance or service. Personal
injury may result.

WARNING:

Do not touch Lamp glass without gloves. Reduced
performance of Lamp may result. Clean Lamp
after handling.

WARNING:

The UV Lamp contains a small quantity of
mercury. If a Lamp breaks, clean and dispose of
with care.

Make sure site can be supplied with the necessary power
requirements. The RX4000 and RX4000B have a power
consumption of 35 watts, the RX1700 26 watts, and require
a 110/220 v, 50-60 Hz power source. Insure that there is
adequate clearance for service. If a humidifier is present, the
air purifier should be installed in the air stream before the
humidifier and the humidifier must be protected from UV
rays.

NOTE: The Ballast for ALL models has been factory set at 110
Volts. If the power source is 220 Volt, the switch on the ballast
must be changed to the 220 volt position, and the plug at the
end of the wire set (RX4000) fit with a 110/220 volt adapter,
or cut off and wired into the 220 volt circuit.

The operating temperature range is 40 to 150 F. Operating
the models outside this range will result in decreased
performance.

NOTE: The purifiers are NOT waterproof. If installing outdoors,
the purifiers must be installed in a watertight enclosure.

RX4000, RX4000B INSTALLATION

IMPORTANT:

The RX4000B must be hardwired into the HVAC
system in the same manner as the RX1700.
Refer to the RX1700 for electrical connections.

The RX4000 is energized from a pressure
differential caused by airflow through the
duct. On variable speed fan applications,
airflow at LOW setting may not be sufficient
to energize the air purifier. The pressure switch
is factory set to a differential of 0.03in. Ensure
that there is a sufficient differential to activate
the switch. As well, take into account that the
differential will decrease as the air filter loads.

The RX4000 Control Panel MUST be installed in a
Perfectly vertical (90 Degree) upright position for
the air sensor to function properly. If the Bottom
of the RX4000 is tilted INWARD, the switch may
not release and the RX4000 will remain on. If
necessary, apply the enclosed foam strip to the
bottom of the RX4000 on top of the existing foam
to shim the bottom outward, so that the RX4000
is at 90 degrees. The switch will function correctly
even if the bottom of the RX4000 is angled outward.

If the RX4000 Control Panel is to be installed
in a horizontal position, or the differential is
not sufficient, the air sensor must be bypassed
by disconnecting the two leads on the pressure
switch and joining them together with a wire nut
and wiring the RX4000 into the fan circuit.

Preparation RX4000, RX4000B

1. Turn off all power to HVAC equipment.

2. Remove the Purifier from its packaging.

3. Remove the UV lamp from the packaging material. The
lamp is fragile, use extreme care. Do not touch the glass on
the lamp with bare hands. Use the enclosed gloves when
handling the lamp. Handle lamp from the ceramic ends.

4. Position lamp inside the aluminum tube. Route 4- pronged
end of lamp through clamp. Clamp is tightened by moving
lever perpendicular to the clamp.

5. Connect the female plug to the lamp. The plug fits in one
direction only. If the plug will not connect to the lamp, turn
the plug 90 degrees.

6. The 6” square aluminum tube can be rotated in 90 degree
increments in order for the backplate and Control Panel

front cover to face upward. To rotate the aluminum tube,
open the front cover of the purifier. Loosen the hex head
nut. Grasp the aluminum tube and rotate it in 90 degree
segments. The tube will lock at each 90 degree segment.
When the correct rotation is found, tighten the hex nut.

7. Install the turbulator (square aluminum cap) on the end of
the aluminum tube facing the air flow. Fasten with screws
provided.

8. Ultra-violet light may damage certain plastics and exposed
non-UVC protected wires. If any plastic or wires are within
the light exposure area, wrap exposed plastic and wiring
with aluminum tape or metal conduit.

9. RX4000 Only, The vacuum sensor tube is located on the
backplate of the RX4000 inside a 90 degree chrome elbow.
The end of the tube must face away from the airflow. If an
adjustment is necessary, loosen the nut inside the control
panel that holds the elbow. Rotate elbow so that it will face
away from the airflow. Tighten the nut.

Return or Supply Air Plenum Installation

Perform the following to install the RX4000, RX4000B:

1. Cut a 6.5in by 10-in. rectangular hole in the ductwork at the

installation location.

2. Place the Purifier in ductwork in correct position. Mark the

8 mounting holes on the ductwork. Remove the Purifier.

3. Drill 8 mounting holes marked in Step 2 (size for no. 8 sheet

metal screws).

4. Place the Purifier inside hole in ductwork. Mount to

ductwork with eight no. 8 sheet metal screws provided.

5. RX4000: Plug in the power cord. If outlet is connected to a

light switch, make sure switch is on. RX4000B: See RX1700
instructions.

OPERATION- RX4000 ONLY

The RX4000 has an on-off switch and a circuit breaker located
at the bottom of the front cover. To operate, press the switch to
the “on” position. The switch has a light to indicate that there
is power. If there is no indicator light on, check the outlet for
power, and check the RX4000 circuit breaker. Start the HVAC
fan. The RX4000 detects airflow with the vacuum sensor. The
RX4000 will only operate when the fan is on (airflow through
plenum) and there is a pressure differential of at least 0.04 in.

LED Indicators There are 4 LED indicators on the front panel.
When the RX4000 is plugged in and the on/off switch is “on”,
the “Power” LED will be lit. If the “Sensor” LED” does not
come on when the fan is energized, either the pressure switch
is defective, or there is not enough of a pressure differential
in the duct to “pull in” the diaphragm. When the pressure
switch energizes, the “Sensor On” LED light will be lit.

The Blue LED indicates that the UV Lamp is on; the Green LED
indicates that the Ballast is functioning. If the Ballast (Green)
LED is on, and the Lamp (Blue) LED is off, the UV lamp is
not functioning. If both LED lights are off, the ballast is not
functioning.

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