Technician Setup Menu - Pro1 Technologies T855iSH Installation Manual

Wiring Diagrams
Power supply
Factory - installed jumper. Remove only when installing on 2 transformer systems.
Use either O or B terminals for changeover valve.
Typical 2H/2C system with 24 VAC Humidifier
RC
RH
Y
C
W/E
G
W2
Y2
H
Typical 2H/2C system with Dehumidify Terminal
RC
RH
Y
C
W/E
G
W2
Y2
D
13

Technician Setup Menu

This thermostat has a technician setup menu for easy installer
configuration. To set up the thermostat for your particular application:
1. Press the MENU button.
2. Press and hold the TECH SET button for 3 seconds. This 3
second delay is designed so that homeowners do not accidentally
access the installer settings.
3. Configure the installer options as desired using the table below.
keys to change settings and the NEXT
Use the or
or PREV key to move from one step to another.
Note: Only press the DONE key when you want to exit the
Technician Setup options.
4. Press the DONE key to exit.
Tech Setup Steps
This feature will flash a reminder
after the elapsed run time to
Filter Change
remind the user to change the
Reminder
filter. A setting of "OFF" will
disable this feature.
This feature allows the installer
to change the calibration of the
Room
room temperature display. For
Temperature
example, if the thermostat reads
Calibration
70˚ and you would like it to read
72˚ then select +2.
The swing setting often called
"cycle rate", "differential" or
"anticipation" is adjustable. A
smaller swing setting will cause
Cooling
more frequent cycles and a larger
Swing
swing setting will cause fewer
cycles.
Swing Setting Tip
The second stage will turn on at 2x the swing setting. The second stage will
turn off when 1x the swing is reached. For example, if the swing setting is .5
degrees for heating and the thermostat is set at 70˚F, the first stage will turn
on at approximately 69.5˚F. The second stage will turn on at 69˚F. The second
stage will turn off at 69.5˚F and the first will turn off at 70.5˚F. If the third
stage is used, it will turn on at 68.5˚F and turn off at approximately 69˚F.
15
R
L1
(HOT)
L2
COMPRESSOR
C
RELAY
HEAT RELAY
FAN RELAY
HEAT RELAY 2
COMPRESSOR
RELAY 2
HUMIDIFIER
R
L1
(HOT)
L2
COMPRESSOR C
RELAY
HEAT RELAY
FAN RELAY
HEAT RELAY 2
COMPRESSOR
RELAY 2
DEHUMIDIFIER
RELAY
LCD Will Show Adjustment Options
You can adjust the filter
OF
change reminder from "OFF"
to 2000 hours of runtime in
50 hour increments.
FILTER
You can adjust the room
0 temperature display to read
up to 4˚above or below the
factory calibrated reading.
CALIBRATE
The cooling swing setting
is adjustable from 0.2˚ to
2˚. For example: A swing
0.5
setting of 0.5˚ will turn the
cooling on at approximately
0.5˚ above the setpoint
and turn the cooling off at
approximately 0.5˚ below
COOL SWING the setpoint.
Wiring Diagrams
A 24 VAC common connection is required with this thermostat.
If DEHUM relay requires a normally-energized input, set Dehumidify relay to NC
in Technician Setup.
Typical 2H/2C system with Dry Contact Humidifier
RC
RH
Y
C
W/E
G
W2
Y2
H
Typical 5H/3C Heat Pump System
RC
RH
Y
C
W/E
G
W2
Y2
O
B
Technician Setup Menu
Tech Setup Steps
The swing setting often called
"cycle rate", "differential", or
"anticipation" is adjustable. A
smaller swing setting will cause
Heating
more frequent cycles and a larger
Swing
swing setting will cause fewer
cycles.
This setting allows the thermostat
to operate a PTAC. This will allow
for multiple fan speeds selectable
PTAC Mode
in the next two tech settings.
This setting allows you to choose
Default
PTAC Fan
the number of fan speeds the
Speeds thermostat will control.
OFF
G = Low Speed Fan
(Only displayed
if PTAC mode is B/O = Medieum Speed Fan
"ON")
Y2 = High Speed Fan
This setting will select the
PTAC Medium
terminal for medium fan speed
Fan Speed
0˚F operations. The selected terminal
Terminal
cannot be used for reversing valve
operations when heat pump is
(Only displayed
enabled.
if PTAC mode is
ON and PTAC fan
speeds is set to 3)
When turned on the thermostat
0.5˚
will operate a heat pump. EM.
Heat will show as an option in the
Heat Pump
system switch tech setting.
Use the
adjust.
System Mode
PTAC (conventional)
PTAC (Heat Pump)
Heat Pump
Conventional
COMPRESSOR
C
RELAY
HEAT RELAY
FAN RELAY
HEAT RELAY 2
COMPRESSOR
RELAY 2
DRY CONTACT
HUMIDIFIER
24V RELAY
NORMALLY-OPEN
TERMINALS
R
COMPRESSOR
C
RELAY 1
AUXILIARY
HEAT 1
FAN RELAY
AUXILIARY
HEAT 2
COMPRESSOR
RELAY 2
COOL
CHANGEOVER OR
COMPRESSOR 3
HEAT
CHANGEOVER OR
COMPRESSOR 3
LCD Will Show Adjustment Options
The heating swing setting is
adjustable from 0.2˚ to 2˚.
For example: A swing setting
0.4
of 0.5˚ will turn the heating
on at approximately 0.5˚
below the setpoint and turn
the heating off at 0.5˚ above
the setpoint.
HEAT SWING
Use the
OF
select ON/OFF.
PTAC MODE
Use the
select , 2 or 3.
2
1. Speeds: ON, Auto
2. Speeds: Low, High, Auto
3. Speeds: Low, Med, High,
Auto
FAN SPEEDS
Use the
select O/B terminals.
0
MED FAN TERM
OFF configures the
thermostat for conventional
systems.
OF
ON configures the
and button to
thermostat for heat pump
systems.
HEAT PUMP
Default Heat Heat Options Cool Default
1 1
2 2, 1
2 5, 4, 3, 2, 1
2 2, 1
R
L1
(HOT)
L2
HUM
HUM
L1
(HOT)
L2
14
Default
0.4˚
and buttons to
OFF
and buttons to
2
and buttons to
0
OFF
Cool Options
1 1
1 1
2 3, 2, 1
2 3, 2, 1
16