Copyright 2010 Biological Controls
3
8/19/2010
2.3.1.
Blower Intake collar-plate
To avoid freight damage, the duct collar-plate is usually mounted with just four (4) sheet metal
screws with the duct-collar facing into the blower chassis,. The plate must be turned around prior to
installation and reattached using these screws and ten (10) others packaged in a small plastic bag
taped to the Blower Module.
The plate may be attached in one of two (2) positions since the collar is not centered on the blower
chassis. Select the position that best aligns the inlet duct-work with the chassis.
2.3.2.
Exhaust collar-plate ¼ and ½ HP Blower Modules
This plate is the same part as the Inlet Collar but has only one correct mounting and is shipped in
the proper position. The collar must align with the blower chassis exhaust port opening.
2.4.
Spacing Modules and Components
The distance between a Blower Module and Filter Module cannot exceed nine (9’) feet without a
custom-length Interconnect Cable Assembly. A “slave” Filter Module (a second Filter Module)
requires no Interconnect Cable; therefore, spacing is determined by the duct length restrictions
only.
The distance between the Filter Module intake-grille (door) and any ceiling diffuser should be at
least 6-8 feet to avoid a “short-circuit” of air-circulation. This happens if most of the air-circulation
occurs only between the Filter Module and the ceiling diffuser; as opposed to dispersing the air
more evenly throughout a room.
3.
INSTALLATION ELECTRICAL
Turn off power at the facility fuse or circuit breaker panel before proceeding
with wiring or installation activities.
All electrical installation and maintenance must be performed by qualified
individuals and in accordance with the National Electrical Code. ANSI/NFPA
70-1999 and local codes.
3.1.
Blower Module-Electrical
The module contains an electrical box to connect to the facility high voltage source (115/230VAC
50/60Hz). The electrical box contains a fuse or breaker to protect the internal wiring. Follow the
appropriate wiring schematic in the appendix depending upon the voltage source available at the
facility power panel. Note that the blower module has been pre-wired for a specific voltage.
Always check the serial number label to confirm the power requirements.
3.1.1.
High Voltage Wall Switch (optional)
A high voltage wall switch may be installed to control the input power to the Blower Module.
The switch is provided by the installing electrician.
3.2.
Filter Module-Electrical
The Filter Module contains the system power switch, pressure gauge, and optional Hour-Meter. It
also contains some additional components when the remote monitoring and power control options
are provided.
Note
that the
UV lamps for EXCFM-UV units are not installed
to protect them
during shipping. The lamps are packaged and taped to the inside of the unit. The lamps should be
installed before adding duct-work to the unit. They can be accessed and installed through the 12”
duct opening in the side of the unit. If not, the bulbs can be accessed by removing the HEPA filter.
