The electrical requirements for the Photohelic gage and switch are 120 VAC, single
phase, 60 Hz. Only a qualified electrician should make the connection of this device.
FILTER CLEANING SYSTEMS
With the standard filter cleaning system, the reverse pulse is released from the
diaphragm valve by the solenoid pilot valve, which is activated in turn by the timer
control board.
On-Demand Filter Cleaning System. A Photohelic gage and switch are used to
initiate the filter cleaning sequence. This unit is a sophisticated and sensitive device.
Therefore, any questions regarding the electrical connection of this device should be
referred to EECI at 1-800-999-0501 before proceeding. Refer to the electrical
schematic labeled “Pulse System Wiring” provided with this manual. Do not connect
circuit test equipment to the timer control board. See CAUTION.
CAUTON
Do not connect circuit test equipment to the timer control board. The
use of certain types of test equipment can seriously damage the
timer control board components. Failure to follow this instruction
will void the warranty.
1.
EECI recommends that the timer control board be mounted next to the
AirWall unit, or within 4 to 6 ft. of the unit.
2.
The common (white) lead, along with wires numbered 1 through 5, have
been pre-wired into the junction box located on the AirWall unit. Leads in
this junction box are numbered 1 through 5, with an additional common
(white) lead. Run these leads through suitable conduit into the Photohelic
control panel. Since the distance from the junction box to the Photohelic
control panel is not known for your installation, this cable is not supplied.
3.
From the junction box, connect wires 1 through 5 to terminals 1 through 5
on the timer control board.
4.
Connect the common lead (white) from the AirWall unit to the common
terminal on the sequence controller board. These connections allow the
