Power Random Start Up
This feature prevents multiple units sharing
The anti short cycle delay is 300sec delay
on break during normal operation.
same electrical circuit or network from
tarting at the same time.
H
not demand high
rush currents simultaneously when starting
e than 28
illiseconds, a random delay is initiated
t
27
3
t
t be removed completely.
cycle delay
feature protects the compressor short
all from a
ermostat or controller (after the random
tart up and/or the anti short cycle delays
have elapsed). Y input terminal must be
d with a 24 VAC signal.
to
energize the compressor output (CC). The
the
s
It assures that eat Pumps sharing the
same electrical circuit do
in
back up after a power failure.
If the controller has been completely
powered down for mor
m
typically the unit will star between the time
range of 0 and 00 seconds, his only if
the controller is set to normal operation (test
switch set to NO).
In order for the random sequence- to initiate
the unit power mus
Anti short
This
cycling if the Y call is set and removed.
Y Call
The UPM will energize the compressor’s
utput (CC) in an event of a “Y” c
o
th
s
energize
High and Low pressure protection
The UPM monitors the state of the High and
Low pressure Switch inputs, HPC and LPC
on the board respectively, these switches
must be closed in order for the controller
CC output will only be energized when
switches are closed and the anti short cycle
(and /or random start up when applicable)
has expired.
NOTE:
If the board is set to test mode through the “TEST”
DIP switch the delay will be 5 seconds.
IMPORTANT:
If controller is set to “TEST” mode through the
“TEST” DIP switch SW1 delay will be 10 seconds.
5
