Pro1 Technologies T855iSH Installation Manual page 7

Technician Setup Menu
Tech Setup Steps
This feature allows fresh air into
a unit for a selectable amount
of time. When Fresh Air Mode is
enabled, the fan and the fresh air
Fresh Air
damper terminal will energize
Mode
simultaneously.
(This setting
cannot be used
with PTAC, three
stages of cool,
or economizer
turned on)
Fresh Air This setting provides the option
to select a terminal for Fresh Air
Terminal
damper functions. The selected
terminal cannot be used for
(Only displayed
reversing valve operations when
if fresh air mode
the heat pump setting is turned
is turned ON.
on.
This setting
cannot be used
with PTAC, three
stages of cool,
or economizer
turned ON.)
Remote
You can configure the thermostat
for one of three remote sensor
Sensor
applications: 0 No Sensor, 1
Operation
Indoor, 2 Outdoor, 3 Floor.
(Only displayed
if a sensor is
connected
to S1 and S2
terminals)
S1 / S2 Terminal
Options Mode
1
Indoor
The local and remote temperatures are averaged.
2 Outdoor
The outdoor temperature is flashed in clock.
3 Floor
The floor temperature is shown in tech.
25
Technician Setup Menu
Tech Setup Steps
Balance point with electric
auxiliary will optimize heat
pump usage. When the outdoor
temperature is above the AUX CUT
OUT selection, the thermostat
Balance Point
to only allow the Y terminal(s)
Electric AUX
to energize and lockout the W2
Cut In
terminal. When the outdoor
temperature falls below the
AUX CUT OUT selection and sits
(Only displayed if
above the AUX CUT IN selection,
remote
sensor setting is
the thermostat to allow the Y
set to 2 and Duel
terminal(s) and the W2 terminal
Fuel Aux if Off)
to energize. When the outdoor
temperature below the AUX CUT
IN selection, the thermostat will
only energize the W2 terminal
and lockout the Y terminal(s).
Balance point run time will allow
the W2 auxiliary terminal to ener-
Balance
gize even if outdoor temperature
Point Run
is above selected balance point
Time
temperature. If enabled, auxiliary
will energize for the current cycle
after the balance point run time
(Only displayed
if remote sensor has expired.
setting is set
to 2)
Note: Only shows if Balance Point is
set to an outdoor temperature.
This feature will bring in outside
Free Cooling
air for first stage cooling opera-
tions, if the outdoor temperature
(Only displayed is 5 (or more) degrees lower than
if remote sensor
the setpoint temperature. This
setting is
setting can only be enabled if the
set to 2)
thermostat is in cooling mode.
27
Adjustment Options
LCD Will Show
Use the and buttons to
select OFF, OC ON or ON.
OFF: Thermostat does not
enable Fresh Air Mode.
OF
OC ON: Fresh Air Mode is
enabled during the OCCUPIED,
WAKE, RETURN, and SLEEP
time periods (It will not bring
in fresh air during UNOCCUPIED
and LEAVE time periods).
ON: Thermostat will enable
Fresh Air Mode for every time
FRESH AIR periods.
Use the and buttons
to select O/B.
0
FRESH AIR TRM
Use the left and right
arrows to select one of three
options. View the S1/S2
0
terminal chart on next page
for an explanation of these
options.
REMOTE MODE
Description Requires
R251S
R250S
R250S
Adjustment Options
LCD Will Show
Use the and buttons
to select 10, 15, 20, 25, 30,
35, 40, 45, 50 degrees.
40
AUX CUT IN
Off, 15, 30, 45, 60, 75, 90
OF
BP RUN TIME
Use the and buttons
to select ON/OFF.
OF
FREE COOLING
Technician Setup Menu
Default Tech Setup Steps
You can disable the sensor on
the T855SH thermostat. At least
Local Temp
one R251S indoor remote sensor
Sensor
must be connected to disable the
local T855S sensor. Note: Will only
(Only displayed
show if remote sensor is set to 1.
OFF
if remote sensor
setting is set to 1)
Enables the use of up to sixteen
Number
indoor sensors R251S. Note: Will
of Indoor
only show Remote Sensor is set
Remotes
to 1 and Local Temp Sensor is
set to on.
(Only displayed
if remote sensor
setting is set to 1)
An outdoor temperature above
Dual Fuel
balance point will cause the
Balance
O
thermostat to energize the Y
Point
terminal(s) only in calls for heat.
An outdoor temperature below
(Only displayed
balance point will cause the
if remote sensor
thermostat to energize the W2
setting is set to
terminal only in calls for heat.
2 and Dual Fuel
AUX = On)
Balance point with electric
auxiliary will optimize heat
pump usage. When the outdoor
0
temperature is above the AUX CUT
Balance Point
OUT selection, the thermostat
to only allow the Y terminal(s)
Electric AUX
will energize and lockout the W2
Cut Out
terminal. When the outdoor
temperature falls below the
(Only displayed if
AUX CUT OUT selection and sits
remote
above the AUX CUT IN selection,
sensor setting is
the thermostat will allow the Y
set to 2 and Duel
terminal(s) and the W2 terminal
Fuel Aux if Off)
to energize. When the outdoor
temperature is below the AUX
CUT IN selection, the thermostat
will only energize the W2 termi-
nal and lockout the Y terminal(s).
Technician Setup Menu
Default Tech Setup Steps
This setting provides the option to
Free Cooling
select a terminal for Free Cooling
Terminal
functions. The selected terminal
cannot be used for reversing valve
(Fresh air
operations when the heat pump
mode and free
setting is turned on.
cooling can be used
together. Free
cooling cannot be
used with PTAC
mode, three stages
of heat, or
OFF
economizer mode)
The temperature of the floor
sensor will be displayed.
Floor
Note: Only shows when REOP is
Temperature
set to 3.
(Only displayed
Use and
if remote sensor
setting is set to 3)
This setting allows you to set
a maximum floor temperature
Floor High
limit for heat. Heat will be locked
Limit
out when the floor temperature
is above this value. Note: Only
(Only displayed shows when REOP is set to 3.
OFF
if remote sensor
setting is set
to 3)
This setting allows you to set
a minimum floor temperature
Floor Low
limit for heat. Heat will turn on
Limit
automatically when the floor
temperature is below this value.
(Only displayed
OFF Note: Only shows when REOP is
if remote sensor
set to 3.
setting is set to 3)
Adjustment Options
LCD Will Show
ON enables local T855SH
sensor. OFF disables local
T855SH sensor.
LOCAL TEMP
You can use 1, 4, 9, or 16
indoor sensors. Refer to the
R251S Install Manual for de-
1
tailed connection information
NUMBER REMOTE
Use the
to select OFF, 10, 15, 20, 25,
30, 35, 40, 45, 50 degrees.
OF
BALANCE POINT
Use the
to select 10, 15, 20, 25, 30,
35, 40, 45, 50 degrees.
40
AUX CUT OUT
Adjustment Options
LCD Will Show
Use the
to select O/B.
O
FREE COOLTRM
N/A
76
buttons to adjust.
FLOOR TEMP
Use the
select the High Limit for the
floor sensor.35 - 120
86
HIGH LIMIT
Use the
select the Low Limit for the
floor sensor.
50
35 - 120
LOW LIMIT
Default
ON
1
and buttons
OFF
and buttons
OFF
26
Default
and buttons
O
N/A
or buttons to
86
or keys to
50
28