Install Instructions

POWER THE CONTROL
SELECT FEED DELAY
SELECT FEED AMOUNT
DIAGNOSTIC SYMBOLS
Fd
001
dL
y
Err
LOC
–––
The Diagnostic LED indicate mode of operation and can be used to troubleshoot programming errors. See
figures below for diagnostic symbol interpretations.
NORMAL OPERATING MODE
Feeder is powered and on standby.
DELAY BEFOR FEED MODE
Allows for condensate to return
prior to feed (45 sec. to 10 min.).
FEED MODE
Solenoid valve is open.
TIMER
Counts seconds when FEED button is
pressed. Useful for selecting feed setting.
ERROR
Improper dipswitch setting. Check that ONE
Delay and ONE Feed switch is selected.
LOCKOUT MODE
Feeder has fed 10 minutes and continues to
receive a call from the boiler control. Check
operation of boiler control. Reset feeder by
removing power momentarily.
FEED CALL Illuminated decimal indicates feeder is receiving a call from the boiler control.
NO DELAY 45 SECONDS 2 MINUTES
(Factory Setting)
5 MINUTES 8 MINUTES 10 MINUTES
LWCO
(Factory Setting)
LWCO +15 SEC. LWCO +30 SEC. LWCO +60 SEC. LWCO +90 SEC. LWCO +120 SEC.
Once the control is plumbed and wired, power the system. Upon initial power up, the control will go through a 10
second self-diagnostic test cycle. During this period various characters will be displayed on the LED screen and the
solenoid will power up for approximately one second. This only takes place upon powering the control.
The VXTC is equipped with six delay before feed settings. The delay prevents over-feeding the boiler by allowing
time for condensate to return to the boiler prior to the initiation of a feed cycle. The VXTC is factory set with a two
minute delay. Longer delays should be selected for systems with slow condensate return. A NO DELAY setting is
also provided for process steam applications or other systems in which no delay is needed
The VXTC is equipped with six feed setting. The feeder is factory set in the LWCO position. In this setting, the VXTC
will stop feeding as soon as the water level satisfies the boiler control. The remaining five settings raise the water lev-
el above the boiler control by continuing the feed cycle for varying times (15 to 120 seconds) after the water satisfies
the boiler control. For information on proper feed setting procedure see section on page 4.
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