Smart Temp SMT?770 Installer Manual - Switch
9
|
P a g e
Switch
8
–
Thermostat
Control
Logic.
This
switch
also
has
two
functions
based
on
the
position
of
switch
6.
When
the
SMT
‐
770
is
set
as
a
programmable
thermostat,
switch
8
determines
whether
a
commercial
program
or
residential
program
is
selected.
When
switch
6
has
the
SMT
‐
770
used
as
a
non
programmable
thermostat,
this
switch
sets
single
set
point
mode
(imitating
a
simple
mechanical
thermostat)
or
whether
a
separate
heating
and
cooling
set
point
can
be
selected
by
the
user.
Two
set
point
mode
also
permits
the
user
to
select
a
separate
day
and
night
set
point
if
required.
TT
Terminal
Functions
The
SMT
‐
770
is
fitted
with
a
set
of
terminals
marked
“TT”.
Details
on
the
functions
that
the
“TT”
terminals
perform
is
provided
below.
See
the
advanced
installer
setting
menu
on
page
19
of
this
manual
for
setting
the
function
of
this
set
of
terminals.
The
wiring
used
in
the
following
examples
are
not
polarity
dependent
and
do
not
normally
require
screened
cable.
Note:
The
SMT
‐
770
can
use
multiple
sensors
if
required
for
averaging.
Drawings
showing
these
various
configurations
are
shown
on
page
37
of
this
manual.