Hybrid
Horizontal
Spacekeeper
–
Installation
Operation
Maintenance
Manual
OPERATION
R090303
Installation
Operation
Maintenance
Manual
is
subject
to
change
without
notice
Page
15
than
normal
temperature
swings.
The
cool
anticipator,
if
oversized,
can
bleed
enough
current
to
indicate
a
cooling
call
even
after
it
has
been
terminated.
3.
Battery
powered
thermostats
–
These
thermostats
were
developed
as
replacements
for
old
mercury
bulb
thermostats
that
had
4
wire
connections
while
24V
electronic
thermostats
required
5
wires.
These
will
work
with
a
CGC
board,
although
CGC
does
not
recommend
them.
They
require
periodic
battery
replacement,
which
is
something
that
should
be
avoided
if
possible.
4.
Power
stealing
thermostats
–
This
type
of
thermostat
is
electronic
and
was
also
developed
as
a
replacement
for
old
mercury
bulb
thermostats.
These
too
are
problematic
in
that
they
bleed
a
small
amount
of
current
down
the
signal
wires
and
this
may
be
interpreted
as
a
signal
for
heat
or
cool.
5.
Triac
switched
controllers
–
This
is
a
commonly
used
switching
device
and
all
controllers
tested
to
date
have
functioned
flawlessly.
CGC
recommends
that
prior
to
installation
of
a
third
party
supplied
controller,
it
be
checked
for
compatibility.
CGC
can
confirm
this.
6.
Relay
switched
controllers
–
This
type
of
controller
works
well
with
CGC
devices.
SHUTDOWN
OUTPUT
The
CGC
board
has
an
optional
input
terminal
strip
that
allows
for
two
types
of
remote
shutdown.
These
are
a)
compressor
shutdown
and
b)
unit
shutdown.
The
advantage
of
these
inputs
is
that
many
units
can
be
connected
in
parallel
and
when
powered
by
an
independent
24V
AC
signal
one
or
both
of
these
actions
can
be
implemented.
Common
uses
are:
a.
Duty
cycling
for
demand
control
b.
Global
night
setback
c.
Heating
only
mode
during
emergency
power
periods
The
CGC
controller
is
also
set
up
so
these
shutdown
functions
can
be
initiated
individually
with
on
board
24V
power.
This
capability
allows
unit
or
compressor
shutdown
based
on
a
door
switch,
a
light
switch,
or
occupancy
switch.
A
separate
24V
power
supply
is
required
if
two
or
more
units
are
being
shutdown.
FAULT
ALARM
OUTPUT
The
CGC
board
is
provided
with
a
fault
alarm
indication
and
output.
The
fault
alarm
relay
provides
normally
open
and
normally
closed
contacts
for
use
in
transmitting
fault
conditions.
NOTE:
The
fault
alarm
is
energized
for
NORMAL,
and
de
‐
energized
for
fault.
As
such,
if
the
unit
