1. Using mounting plate, mark holes on
furnace return duct to be cut.
2. Cut holes in desired location and
attach mounting plate to duct with
screws.
3. Make sure the negative static pres-
sure tube from the pressure switch
is inserted into the return air duct
properly. The end of the tube should
be clear of any insulation or other
obstacles.
4. Attach HEPA unit to mounting plate
with screws.
5. Installing Grommet and Tubing
• First drill a 1/4" to 5/16" diameter hole in the duct wall on the
supply air side of the furnace duct. Carefully insert the grommet
into the hole. (Drilling a metal duct may produce burrs. Be care-
ful not to cut or pricked by the burrs or the duct.) Make a mark
a distance of1/2" from one end of the tubing. Slide this end of
the tubing through the center of the gr
ommet up to the mark as
illustrated.
6. Connect the other end of tube you connected to the supply air duct
to the positive port of the pressure switch located on the electrical
panel and marked "Pressure Switch"
7. Open the access door of the DM3000P and remove the carbon fil-
ter and the HEPA filter that are sealed in a plastic bag. Remove the
plastic bag and dispose of them appropriately. Insert the HEPA fil-
ter carefully then insert the carbon filter. Close and latch the
access door.
8. Switch rocker switch to "ST
ANDBY" or "CONTINUOUS".
OPERATION
Your Fantech HEPA filtration system incorporates three stages of filtration. Air is drawn from the house via one of the installation examples,
found in this manual, by a powerful efficient EBM fan. The air is cleaned as it passes through the filters, where it is then reintroduced back into
the home, cleaned of the majority of harmful particles.
The DM3000P includes a differential pressure switch. When rocker switch is set to "STANDBY" the DM3000P will remain OFF until the pres-
sure switch detects airflow in the forced air system's duct. As airflow is detected, the DM3000P is turned ON. When the rocker switch is set
to "CONTINUOUS" the DM3000P will operate continuously irregardless of the forced air system's operation. Finally, when the rocker switch is
set to "OFF" all power to the DM3000P is disengaged.
Note: A semi-annual service schedule must be followed to ensure the HEPA unit is operating at its full potential.
INSTALLATION
DM 3000P - Duct Mounted model
The return side of the furnace is the recommended location for the
HEPA to connect to.
IMPORTANT NOTICE:
1) The DM3000P should not be installed on its side. Should only be
installed like Option A & B.
2) Variable speed forced air systems or installation where the pres-
sure difference between the return air and supply air ducts are
less than 18 Pa (0.07 in wg) may not provide the required differ-
ential pressure to activate the DM3000P when set on "STANDBY".
The only remedy is to set the DM3000P on "CONTINUOUS" mode.
* Diagrams are examples only. Actual installation may vary.
Airflow
DM 3000P - (installation instructions)
Option A
Option B
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