Installation
24
United Industries, Inc.
P.O. Box 58
Sterling, KS 67579
800-835-3272 • 620-278-3160
Fax 800-500-3115 • 620-278-3115
www.towerflo.com
Form TFH-INSTALL3/4:4/14
Data presented here is the best available at the
time of publicaton. United Industries and/or its
representatives assume no liability for its use.
Series
TFH
STEP 4. ELECTRICAL
All TOWER-FLO
®
systems are pre-wired at the factory and require only field connections to power source. Proceed
as follows:
A) Locate the panel specific, 11" x 17", wiring schematic packed in the filter’s control panel. This schematic match
-
es this exact control panel. Make copies if necessary. This schematic should remain in the control panel for future
reference.
B) Check power supply wiring and related components for compatibility with system making sure local code require-
ments are met.
C) Make all contacts according to the appropriate phase/voltage wiring schematic.
D) In the standard control panel, there are two sets of contacts for remote communication with a building control
system (BCS):
1) control terminals 8 & 9 are for remote indication of repeat backwash alarm.
2) control terminals 10 & 11 are for remote pump on/off in combination with the HOA switch. They are factory
jumpered so that the system will operate in either Hand or Auto. To connect to the BCS, remove the jumper
across terminals 10 & 11 and connect BCS wiring.
STEP 4A. ANTI-SIPHON SOLENOID VALVE
Per the warning statement under STEP 2, you may choose to install a
n
ormally closed 24 VAC solenoid valve in the backwash line to waste
designed to prevent accidental draining of condenser water should
power loss occur to the control valves while in a backwash cycle. Such
a valve is available, as optional equipment, from Tower-Flo.
Install the solenoid valve in the backwash line before it reaches the
backwash sight tube or sight glass. Connect the solenoid valve to the
filter control panel according to the schematic below.
BACKWASH
ANTI-SIPHON
SOLENOID
VALVE, 24VAC
RED
X1
TFH SERIES FILTERS
CONTROL TERMINAL WIRING
DIFFERENTIAL
PRESSURE SWITCH
ACTUATOR, I/O SWITCH
ON POSITION “I”
WHITE
WHITE
WHITE
BLACK
1
5
14
15
X3
X3
X3
16
17
17