Planning The Installation - Honeywell F58G Product Data

F58G COMMERCIAL DUCT MOUNTED ELECTRONIC AIR CLEANER1

PLANNING THE INSTALLATION

Application
The F58G is used in a forced air heating, cooling, or
ventilating system. It removes airborne particles from the air
circulated through it. It provides a relay contact that can be
connected to a building management system to provide
remote status indication. It is recommended that only one unit
with WASH indication be installed in each array of units.
IMPORTANT
Do not mount air cleaner in the discharge air duct.
For most efficient air cleaning, airflow must be spread evenly
across the face of the air cleaner. If the duct is a different size
than the air cleaner array, gradual transitions are
recommended.
Applications With Outdoor Air Intake
Return air temperature must be at least 40°F (4°C). Lower
temperatures can cause ionizer wire failure. If outdoor air is
used, warm it upstream from the air cleaner by:
• Making sure the outdoor intake is far enough upstream
from the air cleaner so the return and outdoor air are
thoroughly mixed.
• Adding baffles upstream from the air cleaner to force
thorough air mixing.
• Installing a preheater if large amounts of outdoor air are
used. (Control the preheater with a thermostat. Protect the
hot water or steam coils with a freeze-up control.)
Choosing Mounting Position
WARNING
Heavy Equipment Hazard.
Can cause injury or equipment damage.
Mount the air cleaner with the power supply on top.
Do not mount the air cleaner with the pre-filter facing
down; the latches may not hold and the cell and pre-fil-
ter can fall unexpectedly.
Multiple electronic air cleaner installations are needed for
many commercial systems. F58G air cleaners can be
mounted side-to-side, and stacked in rows. Carefully plan the
number of air cleaners and positions before beginning
installation. To visualize the installation plan, temporarily
arrange the desired number of air cleaners on the floor.
Consider the total dimensions, clearance, and accessibility of
all air cleaners before selecting a location.
Constructing F58G Array
The F58G side flanges are designed so a row of units can be
easily constructed with up to six units per row. Units should be
attached using eight no. 8X 1/4-in. sheet metal screws on
each side panel.
68-0233
Before attaching the adjacent units, plug the wiring con-
nectors together. In addition, multiple rows of units can be
stacked to build an array to the size required for the appli-
cation. Attach upper rows to the rows beneath using four no. 8
x 1/4-in. sheet metal screws per unit in the holes provided.
Constructing Array Support Structure
WARNING
Construction Collapse Hazard.
Can cause personal injury or equipment damage.
Provide adequate structural support to prevent array
collapse.
Support each unit with external structural elements
across both top and bottom and add cross supports,
as needed.
Provide adequate array support to prevent collapse:
• Provide minimum of external structural support across the
top and bottom of each unit.
• Provide cross supports, as needed.
CROSS SUPPORTS
ATTACHED TO DUCT FLANGE
Fig. 3. Array support structure.
Determining Duct Design Requirements
The air cleaner is adaptable to new or existing forced air
heating, cooling and ventilating systems. Transitions, turning
vanes, or offsets may be needed in some applications.
Use transitions when the duct opening is a different size than
the air cleaner array. Gradual transitions reduce air turbulence
and increase efficiency. See Fig. 4. Limit the duct change to
no more than 20 degrees or four inches per linear foot (one
meter per three linear meters).
4
AIR HANDLER
DUCT FLANGE
M13457