Viega 15118 Instruction sheet

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Product
Instructions
PI-PR 566441 0114 (Multifunctional Thermostat)
Viega LLC, 301 N. Main, 9th Floor • Wichita, KS 67202 • Ph: 800-976-9819 • Fax: [phone]
Viega®Multifunctional Heat/Cool Thermostat
The Viega multifunctional heat/cool thermostat is easy
to install, easy to wire and easy to program. It can be
used for three stages of heating and two stages of
cooling, making it ideal for many applications. Installation
instructions can be found below.
Part Number 15118
Caution: Electrical Hazard
Failure to disconnect the power before beginning
to install this product can cause electrical shock or
equipment damage.
Mercury Notice:
All of our products are mercury free. However, if the
product you are replacing contains mercury, dispose of it
properly. Your local waste management authority can give
you instructions on recycling and proper disposal.
A trained, experienced technician must install this
product. Carefully read these instructions. You could
damage this product or cause a hazardous condition if
you fail to follow these instructions.
W/E
W2
Y2
For vertical mount put one screw top and one screw bottom.
For horizontal mount put one screw left and one screw right.
The thermostat can be mounted directly to the wall or it can
be mounted to a wall box. Use the vertical mounting screw
location to attach to a wall box.
Mounting the subbase
Thermostat applications guide
Description
Gas or Oil Heat Yes
Electric Furnace Yes
Heat Pump (No Aux. or Emergency Heat) Yes
Heat Pump (with Aux. or Emergency Heat) Yes
Multi-stage Systems Yes
Heat Only Systems Yes
Cool Only Systems Ye s

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Product
Instructions
PI-PR 566441 0114 (Multifunctional Thermostat)
Viega LLC, 301 N. Main, 9th Floor • Wichita, KS 67202 • Ph: 800-976-9819 • Fax: [phone]
Installation tips
Wall locations
The thermostat should be installed approximately 4 to 5 feet above the
oor. Select an area with average temperature and good air circulation.
NOTE: Pick an installation location that is easy for the
user to access. The temperature of the location should be
representative of the building
Do not install thermostat in locations:
• Close to hot or cold air ducts
• That are in direct sunlight
• With an outside wall behind the thermostat
• In areas that do not require conditioning
• Where there are dead spots or drafts (in corners or
behind doors
• Where there might be concealed chimneys or pipes

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Product
Instructions
PI-PR 566441 0114 (Multifunctional Thermostat)
Viega LLC, 301 N. Main, 9th Floor • Wichita, KS 67202 • Ph: 800-976-9819 • Fax: [phone]
Thermostat wiring
1. If you are replacing a thermostat, make note of the
terminal connections on the thermostat that is being
replaced. In some cases the wiring connections will
not be color coded. For example, the green wire
may not be connected to the G terminal.
2. Loosen the terminal block screws. Insert wires then
retighten terminal block screws.
Viega thermostat terminal conversion
Power type
• 3 wire
• 3 wire with battery backup
• 2 wire with battery
Wire specifications
Use shielded or non-shielded 18-22 gauge thermostat wire.
Wiring Tips
C terminal
The C (common wire) terminal does not have to be
connected when the thermostat is powered by batteries.
NOTE: In systems with no emergency heat relay a jumper
can be installed between E and W2 to turn thermostat into
a single stage control.
Warning: All components of the control system and the thermostat installation
must conform to Class II circuits per the NEC Code.
Terminal
2 Heat 2 Cool
Conventional System
2 Heat 2 Cool
Heat Pump System
3 Heat 2 Cool
Heat Pump System
RC Transformer power
(cooling)
Transformer power
(cooling)
Transformer power
(cooling)
RH Transformer power
(heating)
Transformer power
(heating)
Transformer power
(heating)
C Transformer common Transformer common Transformer common
B Energized in heating Heat pump changeover
valve energized in cooling
Heat pump changeover
valve energized in heating
O Energized in heating Heat pump changeover
valve energized in cooling
Heat pump changeover
valve energized in heating
G Fan relay Fan relay Fan relay
W/E First stage of heat Emergency heat relay Emergency heat relay
Y First stage of cool First stage of heat & cool First stage of heat & cool
Y2 Second stage of cool Second stage of cool Second stage of cool &
second stage of heat
W2 Second stage of heat Auxiliary heat relay,
second stage of heat
Auxilary heat relay,
third stage of heat
Terminal designations
This thermostat is shipped from the factory to operate a conventional heating and cooling system. See the "heat pump"
conguration step on page 11 of this manual to congure the thermostat for heat pump applications.
RH
C
W
RH
C
W/E
L
N
R
C
W
Thermostats
15116
15117
Thermostat
15118
Zone Control
18060
18062
18050
Zone Control
18032
Thermostat
18029

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Product
Instructions
PI-PR 566441 0114 (Multifunctional Thermostat)
Viega LLC, 301 N. Main, 9th Floor • Wichita, KS 67202 • Ph: 800-976-9819 • Fax: [phone]
AUXILLARY
Typical industry wiring diagrams
NOTE: In many systems with no emergency heat relay a jumper can be installed between E and W2

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Product
Instructions
PI-PR 566441 0114 (Multifunctional Thermostat)
Viega LLC, 301 N. Main, 9th Floor • Wichita, KS 67202 • Ph: 800-976-9819 • Fax: [phone]
Viega wiring diagrams
ZONE CONTROL (18060, 18062)
WITH OPTIONAL PRIORITY
OFF
ON
ZONE 4 PRIORITY
ZONE 1 ZONE 2 ZONE 3 ZONE 4
ZONE 4 RELAY
N/O N/CCOM
PUMP
END
SWITCH
ISOLATED
END
SWITCH
ZONE 1 ZONE 2 ZONE 3 ZONE 4
FUSE
(5 AMP MAX)
POWER IN
W C
R W CR W CR WCR
1234
120 V AC
Power Supply
L
N
R
C
CC RW NTC A/B
Thermostat -18050
1 2 34 1234
C
O
B
W
RH
RC
G
Y
Thermostat -15116
C
O
B
W
RH
RC
G
Y
Thermostat -15117
C
O
B
W/E
RH
G
Y
Thermostat -15118
W2 Y2
RC
Viega Yellow
Yellow
Red
Red
Viega
Yellow
Yellow
Red
Red
Viega Yellow
Yellow
Red
Red
Viega
Yellow
Yellow
Red
Red
Line Voltage
Low Voltage
LEGEND: Zone Controls
Part Numbers:
15116, 15117 and 15118
1. Connect the "RH" terminal
from the thermostat to "R"
terminal on the zone control
2. Connect the "W" terminal
from the thermostat to "W"
terminal on the zone control,
for part number 15118
connect "W/E" terminal from
the thermostat to "W" terminal
on the zone control
3. Connect the "C" terminal from
the thermostat to the "C"
terminal on the zone control
Connecting Viega thermostats and zone valves to the Viega zone control

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Product
Instructions
PI-PR 566441 0114 (Multifunctional Thermostat)
Viega LLC, 301 N. Main, 9th Floor • Wichita, KS 67202 • Ph: 800-976-9819 • Fax: [phone]
Class II
Transformer
C
R
120 V AC
Power Supply
N
L
C
O
B
W
RH
RC
G
Y
Thermostat -15116
ViegaViega
Line Voltage
Low Voltage
LEGEND: Zone Controls
Sensors
ELECTRICAL SCHEMATIC
NOTES: Wiring
1. This drawing shows system wiring concept only Installer is responsible for all equipment & detailing required by local codes
2. All wiring shall be in conformance with the latest edition of the National Electrical Code
3. Maximum current rating of Basic and Advance Heating Control Relay is 10 Amps, Basic and Advance Snow Meltng Control
Relay is 5 Amps, Maximum current rating of Zone Control Relays is 5 Amps, if circulator draw exceeds this use pilot relay with
120 VAC coil operated by Viega Control.
4. Consult with control / boiler manufacturer for limitations and installation instructions
5. Do not run the wires parallel to telephone or power cables. If the sensor wires are located in an area with strong sources of
electromagnetic interference (EMI), shielded cable or twisted pair should be used or the wires can be run in a grounded metal
conduit. If using shielded cable, the shield wire should be connected to the Com or Com Sen terminal on the control and not to
earth ground. Use 18 AWG copper wiring for all sensor wiring. Sensors should be located 12" down stream of mixing point.
6. DHW priority relay must be rated to handle full amperage load of zone circulator relay center
7. Other configurations are possible, but all space heating zone circulators must turn off when DHW mode is on or heat source
needs to be sized for multiple loads.
Thermostat &
2 Wire
Powerhead
Class II
Transformer
C
R
120 V AC
Power Supply
N
L
Viega
Red
Red Yellow
Yellow
TO T-T BOILER CONTACT, PUMP
RELAY OR OTHER AUXILIARY
DEVICE REQUIRING CONTACT
CLOSURE. SEE NOTE 2.
C
O
B
W
RH
RC
G
Y
Thermostat -15116
Line Voltage
Low Voltage
LEGEND: Zone Controls
Sensors
ELECTRICAL SCHEMATIC
NOTES: Wiring
1. This drawing shows system wiring concept only Installer is responsible for all equipment & detailing required by local codes
2. All wiring shall be in conformance with the latest edition of the National Electrical Code
3. Maximum current rating of Basic and Advance Heating Control Relay is 10 Amps, Basic and Advance Snow Meltng Control
Relay is 5 Amps, Maximum current rating of Zone Control Relays is 5 Amps, if circulator draw exceeds this use pilot relay with
120 VAC coil operated by Viega Control.
4. Consult with control / boiler manufacturer for limitations and installation instructions
5. Do not run the wires parallel to telephone or power cables. If the sensor wires are located in an area with strong sources of
electromagnetic interference (EMI), shielded cable or twisted pair should be used or the wires can be run in a grounded metal
conduit. If using shielded cable, the shield wire should be connected to the Com or Com Sen terminal on the control and not to
earth ground. Use 18 AWG copper wiring for all sensor wiring. Sensors should be located 12" down stream of mixing point.
6. DHW priority relay must be rated to handle full amperage load of zone circulator relay center
7. Other configurations are possible, but all space heating zone circulators must turn off when DHW mode is on or heat source
needs to be sized for multiple loads.
Thermostat &
4 Wire
Powerhead
Connecting
Viega
thermostats
to 2 wire
powerheads
Connecting Viega thermostats
to 4 wire powerheads
4 powerheads may
be connected to
each thermostat
4
powerheads
may be
connected
to each
thermostat
ZONE CONTROL (18060, 18062)
WITH OPTIONAL PRIORITY
OFF
ON
ZONE 4 PRIORITY
ZONE 1 ZONE 2 ZONE 3 ZONE 4
ZONE 4 RELAY
N/O N/CCOM
PUMP
END
SWITCH
ISOLATED
END
SWITCH
ZONE 1 ZONE 2 ZONE 3 ZONE 4
FUSE
(5 AMP MAX)
POWER IN
W CR W CR W CR W CR
1 2 3 4
120 V AC
Power Supply
L
N
Viega
Viega
Viega
Yellow
Yellow
Red
Red
Yellow
Yellow
Red
Red
Viega
Yellow
Yellow
Red
Red
R
C
C C R W NTC A/B
Thermostat -18050
POWERHEAD (15061)
FOR USE WITH
STAINLESS MANIFOLD
2 WIRE, 24 V,
POWERHEAD (15064)
FOR USE WITH
STAINLESS MANIFOLD
4 WIRE, 24 V,
JUMPER
3&4 JUMPER
3&4
IF PRIORITY
IS USED
1 2 3 4 1 2 3 4
C
O
B
W
RH
RC
G
Y
Thermostat -15116
C
O
B
W
RH
RC
G
Y
Thermostat -15117
C
O
B
W/E
RH
G
Y
Thermostat -15118
W2 Y2
RC
Line Voltage
Low Voltage
LEGEND: Zone Controls
Sensors
ELECTRICAL SCHEMATIC
NOTES: Wiring
1. This drawing shows system wiring concept only Installer is responsible for all equipment & detailing required by local codes
2. All wiring shall be in conformance with the latest edition of the National Electrical Code
3. Maximum current rating of Basic and Advance Heating Control Relay is 10 Amps, Basic and Advance Snow Meltng Control
Relay is 5 Amps, Maximum current rating of Zone Control Relays is 5 Amps, if circulator draw exceeds this use pilot relay with
120 VAC coil operated by Viega Control.
4. Consult with control / boiler manufacturer for limitations and installation instructions
5. Do not run the wires parallel to telephone or power cables. If the sensor wires are located in an area with strong sources of
electromagnetic interference (EMI), shielded cable or twisted pair should be used or the wires can be run in a grounded metal
conduit. If using shielded cable, the shield wire should be connected to the Com or Com Sen terminal on the control and not to
earth ground. Use 18 AWG copper wiring for all sensor wiring. Sensors should be located 12" down stream of mixing point.
6. DHW priority relay must be rated to handle full amperage load of zone circulator relay center
7. Other configurations are possible, but all space heating zone circulators must turn off when DHW mode is on or heat source
needs to be sized for multiple loads.
Thermostat &
Powerhead
to
Zone Control
Connecting Viega thermostats to
the Viega zone control
Part Numbers:
15116, 15117 and 15118
1. Connect the "RH" terminal
from the thermostat to "R"
terminal on the zone control
2. Connect the "W" terminal
from the thermostat to "W"
terminal on the zone control,
for part number 15118
connect "W/E" terminal from
the thermostat to "W" terminal
on the zone control
3. Connect the "C" terminal from
the thermostat to the "C"
terminal on the zone control
Line Voltage
Low Voltage
LEGEND: Zone Controls
Line Voltage
Low Voltage
LEGEND: Zone Controls
Line Voltage
Low Voltage
LEGEND: Zone Controls

7 of 16
Product
Instructions
PI-PR 566441 0114 (Multifunctional Thermostat)
Viega LLC, 301 N. Main, 9th Floor • Wichita, KS 67202 • Ph: 800-976-9819 • Fax: [phone]
Attaching the thermostat to the subbase
Align the 4 tabs on the subbase with corresponding slots
on the back of the thermostat, then push gently until the
thermostat snaps in place.
Battery installation
Battery installation is recommended even if thermostat
is hardwired (C terminal connected). When thermostat
is hardwired and batteries are installed, the thermostat
will activate a compressor delay of 5 minutes when the
thermostat detects a power outage from the hardwired
power supply (batteries included).
Important:
The low battery indicator is displayed when the AA battery power is low. If the user fails to replace the battery
within 21 days, the thermostat display will only show the low battery indicator as a nal warning before the thermostat
becomes inoperable. For more information, see Battery installation and replacement above.
On the back of the thermostat
insert 2 AA alkaline batteries
(included).

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Product
Instructions
PI-PR 566441 0114 (Multifunctional Thermostat)
Viega LLC, 301 N. Main, 9th Floor • Wichita, KS 67202 • Ph: 800-976-9819 • Fax: [phone]
Thermostat display
Important:
The low battery indicator is displayed when the AA
battery power is low. If the user fails to replace the
battery within 21 days, the screen will only show the low
battery indicator but maintain all functionality. If the user
fails to replace the batteries after an additional 21 days
(days 22-42 since rst “low battery” display) the set points
will change to 55°F (Heating) and 85°F (Cooling). If the
user adjusts these setpoints away from these it will hold
for 4 hours then return to either 55°F or 85°F. After day
42 the batteries must be replaced immediately to avoid
freezing or overheating because the thermostat will shut
the unit off until the battery is changed.
1LCD
2Glow in the dark light button
• Push the glow in the dark button and the screen will
illuminate.
3Fan button
• Set to AUTO to run the fan anytime heating or
cooling is running.
• Set to ON to run the fan at all times.
4System button
• Set to heating/cooling or off.
5Menu buttons access door
6Temperature setpoint buttons
• Use the +or –buttons to adjust the room
temperature.
7Menu button
8- 10 User program buttons

9 of 16
Product
Instructions
PI-PR 566441 0114 (Multifunctional Thermostat)
Viega LLC, 301 N. Main, 9th Floor • Wichita, KS 67202 • Ph: 800-976-9819 • Fax: [phone]
Programming the thermostat
This thermostat has a technician setup menu for easy
installer conguration. To setup the thermostat for your
particular application:
1. Press MENU button.
2. Press and hold TECH SET button for 3 seconds. This
3 second delay is designed so that homeowners do
not accidentally access the installer settings.
3. Congure the installer options as desired using the
table below.
Use the +or –keys to change settings and the
NEXT STEP or PREV STEP key to move from one
option to another. Note: Only press DONE key when
you want to exit the Technician Setup options.
NOTE: Only press DONE key when you want to exit
the Technician Setup options.
4. Press DONE key to exit.
Technician Setup Steps
Filter Change
Reminder
Room
Temperature
Calibration
Minimum
Compressor On
Time
Compressor
Short Cycle Delay Cooling Swing Heating Swing Keypad Lockout
This feature will
ash "FILT" in the
display after the
elapsed run time to
remind the user to
change the lter. A
setting of "off" will
disable this feature
This feature
allows the installer
to change the
calibration of the
room temperature
display. For
example, if the
thermostat reads
70° and you would
like it to read 72°
then select +2.
This feature
allows the
installer to select
the minimum
run time for the
compressor. For
example: A setting
of 4 will force the
compressor to
run for at least 4
minutes every time
the compressor
turns on,
regardless of the
room temperature
The compressor
short cycle delay
protects the
compressor from
"short cycling".
This feature will
not allow the
compressor to
be turned on for
5 minutes after it
was last turned off.
The swing setting,
often called "cycle
rate", "differential"
or "anticipation"
is adjustable. A
smaller swing
setting will cause
more frequent
cycles and a larger
swing setting
will cause fewer
cycles.
The swing setting,
often called "cycle
rate", "differential"
or "anticipation"
is adjustable. A
smaller swing
setting will cause
more frequent
cycles and a larger
swing setting
will cause fewer
cycles.
Keypad lockout
allows you to
congure the
thermostat so that
none or some of
the keys do not
function.
LCD will Show
Adjustment Options
You can adjust
the lter change
reminder from "off"
to 2000 hours of
runtime in 50 hour
increments.
You can adjust the
room temperature
display to read
-4°F to +4°F above
or below the
factory calibrated
reading.
You can select
the minimum
compressor run
time from "off",
"3", "4", or "5"
minutes. If 3, 4,
or 5 is selected,
the compressor
will run for at least
the selected time
before turning off.
Selecting "on"
will not allow the
compressor to
be turned on for
5 minutes after
the last time the
compressor was
on. Select "off" to
remove this delay.
The cooling
swing setting is
adjustable from
±0.2°F to ±2°F. For
example: A swing
setting of 0.5°F will
turn the cooling on
at approximately
0.5°F above the
setpoint and turn
the cooling off
at approximately
0.5°F Below the
setpoint.
The heating
swing setting is
adjustable from
±0.2°F to ±2°F. For
example: A swing
setting of 0.5°F will
turn the heating on
at approximately
0.5°F below the
setpoint and turn
the heating off
at approximately
0.5°F above the
setpoint.
Pick PA or FU
PA = partial
keypad lockout,
which locks all the
keys except the +
or –keys.
FU = Full keypad
lockout, which
locks out all the
keys.
Note: Keypad
lockout
instructions are
below.
Factory Default Settings
Off 0°F Off On 0.5°F 0.4°F PA
NOTE: To lock the keypad hold down the +and –keys for 3 seconds. You will see a lock in the display. To unlock
the key pad hold down the +and –keys for 3 seconds.

10 of 16
Product
Instructions
PI-PR 566441 0114 (Multifunctional Thermostat)
Viega LLC, 301 N. Main, 9th Floor • Wichita, KS 67202 • Ph: 800-976-9819 • Fax: [phone]
Technician Setup Steps (continued from the previous page)
Heating
Temperature
Setpoint Limit
Cooling
Temperature
Setpoint Limit °F or °C
12 or 24
Hour Clock Fan Operation
Morning
Recovery Program Options
This feature
allows you to set
maximum heat
setpoint value.
The setpoint
temperature
cannot be raised
above this value.
This feature
allow you to set
a minimum cool
setpoint value.
The setpoint
temperature
cannot be lowered
below this value.
This feature allows
you to display
temperatures in
either Fahrenheit
or Celsius
You can select
either a 12 or 24
hour clock setting.
Select GAS for
systems that
control the fan
during a call for
heat.
Select ELEC
to have the
thermostat control
the fan during a
call for heat.
This feature turns
your system on
before the WAKE
programming
time to ensure the
environment is at
the WAKE setpoint
when the WAKE
time period begins.
The recovery
period will change
based on previous
days knowledge.
For 2 time periods,
the system will
turn on before
the occupied
programmable
time.
You can congure
this thermostat
to have a 7 day
program, a 5+1+1
program or
nonprogrammable.
LCD will Show
Adjustment Options
Use the +or –
key to select the
maximum heat
setpoint.
Range 44°F - 90°F
Use the +or –
key to select the
minumum cool
setpoint.
Range 44°F - 90°F
Select °F for
Fahrenheit or °C
for Celsius
Use the +or –
key to select 12 or
24 hour clock.
GAS or ELEC Use the +or –
key to turn on or
off.
Use the +or –
key to select 7d
for 7 day, 5d for
5+1+1 or 0d for
nonprogrammable.
Factory Default Settings
90°F 44°F °F 12 Hour Clock GAS ON 5d

11 of 16
Product
Instructions
PI-PR 566441 0114 (Multifunctional Thermostat)
Viega LLC, 301 N. Main, 9th Floor • Wichita, KS 67202 • Ph: 800-976-9819 • Fax: [phone]
Technician Setup Steps (continued from the previous page)
Time Periods Display Light
Contractor Call
Number Beep Heat Pump
Operating Modes
Selection
Gas Auxiliary for
Heat Pump
You can congure
this thermostat
to have 2 or 4
programmable
time periods per
day.
2 time periods
is Occupied/
Unoccupied.
4 time periods
is Wake, Leave,
Return, Sleep.
The display light
can be congured
to stay on at all
times or come on
when any key is
pressed.
NOTE: HARDWIRE
ONLY Keeping
the display light
continually "ON"
will greatly reduce
battery life.
Allows you to
put your phone
number in the
display.
You can choose
ON or OFF
When any key is
pressed an audible
beep will sound.
You can choose
ON or OFF
When turned on
the thermostat
will operate a heat
pump.
1. EM. Heat will
show as an option
in the system
switch.
2. Y will be rst
stage of heat &
cool, W/E will be
emergency heat
relay & W2 will be
auxiliary heat relay.
You can congure
the system switch
for the particular
application:
Heat - Off - Cool,
Heat - Off,
Cool - Off,
Heat-Off-Cool-Auto
NOTE: EM, Heat
will show if in heat
pump mode.
This option will
turn the heat pump
off 45 seconds
after the auxiliary
heat relay turns on.
For 2 stage heat
applications, the
rst stage will turn
off 45 seconds
after the auxiliary
stage turns on.
For 3 stage heat
applications, the
rst and second
stage will turn off
45 seconds after
the auxiliary stage
turns on.
LCD will Show
Adjustment Options
Use the +or –
key to select 2 or
4 time periods per
day.
OFF congures
display light to
come on when
the light key or
any other key is
pressed.
ON congures the
display light to stay
on. Use the +or
–key to turn on
or off.
If selected on,
you will see the
input screen after
pressing next step.
Use the +or –
key to select the
desired number
and the FAN or
SYSTEM key
to move from
one character to
another. See note
below operation.
On is selected the
beep will sound.
OFF is selected,
there is no sound.
OFF congures
the thermostat for
non heat pump
systems.
ON congures the
thermostat for heat
pump systems.
Use the +or
–key until the
desired application
is ashing.
For heat pump
systems that are
"dual fuel" (use
a gas furnace for
auxiliary stage
heat) you can turn
this feature on to
turn off the heat
pump when the
auxiliary stage of
heating has been
called for.
Factory Default Settings
4 OFF OFF ON OFF Heat-Off-Cool OFF
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 .8 degrees for heating
and the thermostat is set at 70°F, the rst stage will turn
on at approximately 69.2°F and the rst will turn off at
70.8°F. If third stage is used, it will turn on at 3x the swing
and turn off at approximately 2x the swing.
NOTE: If contractor Call Number is selected ON, your
phone number will show in the display if there has been
a continuous call for heating or cooling for 24 hours or if
the light button is held down for 3 seconds. To remove the
phone number from the display, hold the light button for 3
seconds.

12 of 16
Product
Instructions
PI-PR 566441 0114 (Multifunctional Thermostat)
Viega LLC, 301 N. Main, 9th Floor • Wichita, KS 67202 • Ph: 800-976-9819 • Fax: [phone]
Technician Setup Steps (continued from the previous page)
Stages of Heat
Cooling Fan
Delay Satisfy Setpoint Staging Delay
You can congure
the thermostat to
operate a 3 stage
heat pump system.
2H 2C =
2 heat, 2 cool
3H 2C =
3 heat, 2 cool
The cooling fan
delay setting will
delay the fan from
coming on in cool
mode and keep
running after the
compressor shuts
off for a short time
to save energy in
some systems.
This feature allows
the thermostat
to keep multiple
stages of heat or
cool energized
until setpoint is
satised.
This feature allows
a delay to occur
when a second
and third stage
is needed. This
allows the previous
stage extra time to
satisfy setpoint.
LCD will Show
Adjustment Options
Use the +or
–key to change
between 2 heat
and 3 heat
2 heat will use Y1
as rst stage and
W2 as auxiliary.
3 heat will use
Y1 as rst stage,
Y2 as second
stage and W2 as
auxiliary.
You can select
the Cooling Fan
Delay from "Off"
"15" "30" "60" or
"90" seconds. If
15, 30, 60 or 90 is
selected the fan
will not turn on for
that many seconds
when there is a call
for cool and will
run for that many
seconds after
satisfying a call for
cool.
Use the +or –
key to turn on or
off.
Use the +or –
key to select OFF,
5, 10, 15, 30, 45,
62, 90.
Factory Default Settings
2 Stages OFF OFF OFF

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Product
Instructions
PI-PR 566441 0114 (Multifunctional Thermostat)
Viega LLC, 301 N. Main, 9th Floor • Wichita, KS 67202 • Ph: 800-976-9819 • Fax: [phone]
Programming the thermostat
Set time
Follow the steps below to set the day of the week and
current time:
1. Press MENU.
2. Press SET TIME.
3. Day of the week will be flashing. Use the +or
–key to select the current day of the week.
4. Press NEXT STEP.
5. The current hour is flashing. Use the +or –
key to select the current hour. When using 12-hour
time, make sure the correct a.m. or p.m. choice is
selected.
6. Press NEXT STEP.
7. Minutes are now flashing. Use the +or –key
to select current minutes.
8. Press DONE when completed.
Programming
All our programmable thermostats are shipped with an
energy saving pre-program. You can customize this
default program by following the Set Program Schedule.
Your thermostat can be programmed to have each day of
the week programmed uniquely (7 days), all the weekdays
the same, a separate program for Saturday, and a separate
program for Sunday (5+1+1), or non-programmable.
There can be four time periods for each program (WAKE,
LEAVE, RETURN, SLEEP), or two time periods for each
program (OCCUPIED, UNOCCUPIED). This thermostat
has a programmable fan feature, which allow you to run
the fan continuously during any time period.
Factory Default Program for 4 Time Periods
Day of
the Week Events Time
Setpoint
Temperature
(Heat)
Setpoint
Temperature
(Cool)
Weekday Wake 6 a.m. 70°F (21°C) 75°F (24°C)
Leave 8 a.m. 62°F (17°C) 83°F (28°C)
Return 6 p.m. 70°F (21°C) 75°F (24°C)
Sleep 10 p.m. 62°F (17°C) 78°F (26°C)
Saturday Wake 8 a.m. 70°F (21°C) 75°F (24°C)
Leave 10 a.m. 62°F (17°C) 83°F (28°C)
Return 6 p.m. 70°F (21°C) 75°F (24°C)
Sleep 11 p.m. 62°F (17°C) 78°F (26°C)
Sunday Wake 8 a.m. 70°F (21°C) 75°F (24°C)
Leave 10 a.m. 62°F (17°C) 83°F (28°C)
Return 6 p.m. 70°F (21°C) 75°F (24°C)
Sleep 11 p.m. 62°F (17°C) 78°F (26°C)
Factory Default Program for 2 Time Periods
Day of
the Week Events Time
Setpoint
Temperature
(Heat)
Setpoint
Temperature
(Cool)
Weekday Occupied 8 a.m. 70°F (21°C) 73°F (23°C)
Unoccupied 6 p.m. 64°F (18°C) 80°F (27°C)
Saturday Occupied 8 a.m. 70°F (21°C) 73°F (23°C
Unoccupied 6 p.m. 64°F (18°C) 80°F (27°C)
Sunday Occupied 8 a.m. 70°F (21°C) 73°F (23°C)
Unoccupied 6 p.m. 64°F (18°C) 80°F (27°C)

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Product
Instructions
PI-PR 566441 0114 (Multifunctional Thermostat)
Viega LLC, 301 N. Main, 9th Floor • Wichita, KS 67202 • Ph: 800-976-9819 • Fax: [phone]
You can use the table below to plan your customized
program schedule.
Set program schedule for four time periods
(WAKE, LEAVE, RETURN, SLEEP)
To customize your 5+1+1 program schedule, follow these
steps:
Weekday:
1. Select HEAT or COOL using the SYSTEM key.
NOTE: You have to program heat and cool each
separately.
2. Press MENU.
3. Press SET SCHED. NOTE: Monday-Friday is
displayed and the WAKE icon is shown. You are
now programming the wake time period for the
weekday setting.
4. Time is flashing. Use the +or –key to
make your time selection for the weekday WAKE
time period. NOTE: If you want the fan to run
continuously during this time period, select ON with
the FAN key.
Factory Default Program for 4 Time Periods
Day of
the Week Events Time
Setpoint
Temperature
(Heat)
Setpoint
Temperature
(Cool)
Weekday Wake
Leave
Return
Sleep
Saturday Wake
Leave
Return
Sleep
Sunday Wake
Leave
Return
Sleep
5. Press NEXT STEP.
6. The setpoint temperature is flashing. Use the +
or –key to make your setpoint selection for the
weekday WAKE period.
7. Press NEXT STEP.
8. Repeat steps 4 through 7 for weekday LEAVE time
period, for weekday RETURN time period, and for
weekday SLEEP time period.
Saturday:
9. Repeat steps 4 through 7 for Saturday WAKE
time period, for Saturday LEAVE time period, for
Saturday RETURN time period, and for Saturday
SLEEP time period.
Sunday:
10. Repeat steps 4 through 7 for Sunday WAKE time period,
for Sunday LEAVE time period, for Sunday RETURN
time period, and for Sunday SLEEP time period.
To customize your 7 day program schedule, follow these steps:
Monday:
1. Select HEAT or COOL using the SYSTEM key. You
have to program heat and cool each separately.
2. Press MENU.
3. Press SET SCHED. NOTE: Monday is displayed
and the WAKE icon is shown. You are now
programming the WAKE time period for the Monday
setting.
4. Time is flashing. Use the +or –key to
make your time selection for the Monday WAKE
time period. NOTE: If you want the fan to run
continuously during this time period, select ON with
the FAN key.
5. Press NEXT STEP.
6. The setpoint temperature is flashing. Use the +
or –key to make your setpoint selection for the
Monday WAKE period.
7. Press NEXT STEP.
8. Repeat steps 4 thru 7 for Monday LEAVE time
period, for Monday RETURN time period, and for
Monday SLEEP time period.
Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday:
Repeat steps 4 thru 8 for the remaining days of the week.

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Product
Instructions
PI-PR 566441 0114 (Multifunctional Thermostat)
Viega LLC, 301 N. Main, 9th Floor • Wichita, KS 67202 • Ph: 800-976-9819 • Fax: [phone]
NOTE: Auto Changeover
If in AUTO you have the ability to switch between Auto
Heat or Auto Cool by pressing the SYSTEM key. This can
be done once the current mode has reached its setpoint.
For example: If in Auto Heat, the heat setpoint must be
satised before the thermostat will allow you to switch to
Auto Cool. You can switch out of Auto by holding down
the SYSTEM key. To get back into Auto, you must toggle
the SYSTEM key to Auto.
NOTE: Programmable Fan
The programmable fan feature will run the fan
continuously during any time period it is programmed to
be on. This is the best way to keep the air circulated and
to eliminate hot and cold spots in your building.
Set program schedule for two time periods
(occupied, unoccupied)
Weekday:
1. Select HEAT or COOL using the SYSTEM key.
NOTE: You have to program heat and cool each
separately.
2. Press MENU.
3. Press SET SCHED. NOTE: Monday-Friday is
displayed and the OCCUPIED text is shown. You
are now programming the OCCUPIED time period
for the weekday setting.
4. Time is flashing. Use the +or –key to make
your time selection for the weekday OCCUPIED
time period. NOTE: If you want the fan to run
continuously during this time period, select ON with
the FAN key.
5. Press NEXT STEP.
6. The setpoint temperature is flashing. Use the +
or –key to make your setpoint selection for the
weekday OCCUPIED period.
7. Press NEXT STEP.
8. Repeat steps 4 through 7 for weekday
UNOCCUPIED time period.
Saturday:
9. Repeat steps 4 through 7 for Saturday OCCUPIED
time period and for Saturday UNOCCUPIED time
period.
Sunday:
10. Repeat steps 4 through 7 for Sunday OCCUPIED time
period and for Sunday UNOCCUPIED time period.
To customize your 7 day program schedule, follow these steps:
Monday:
1. Select HEAT or COOL using the SYSTEM key. You
have to program heat and cool each separately.
2. Press MENU.
3. Press SET SCHED. NOTE: Monday is displayed
and the OCCUPIED icon is shown. You are now
programming the OCCUPIED time period for the
Monday setting.
4. Time is flashing. Use the +or –key to make
your time selection for the Monday time period.
NOTE: If you want the fan to run continuously
during this time period, select ON with the FAN key.
5. Press NEXT STEP.
6. The setpoint temperature is flashing. Use the +
or –key to make your setpoint selection for the
Monday OCCUPIED period.
7. Press NEXT STEP.
8. Repeat steps 4 thru 7 for Monday UNOCCUPIED
time period.
Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday:
Repeat steps 4 thru 8 for the remaining days of the week.

16 of 16
Product
Instructions
PI-PR 566441 0114 (Multifunctional Thermostat)
Viega LLC, 301 N. Main, 9th Floor • Wichita, KS 67202 • Ph: 800-976-9819 • Fax: [phone]
This document subject to updates. For the most current Viega technical literature please visit www.viega.us.
Click Services -> Click Electronic Literature Downloads -> Select Product Line -> Select Desired Document
Technical data
The display range of temperature . . . 41°F to 95°F
(5°C to 35°C)
The control range of temperature . . . 44°F to 90°F
(7°C to 32°C)
Loading Rate . . . . . . . . . . . . . . . . 1 amp per terminal,
1.5 amp maximum all
terminals combined
Display accuracy . . . . . . . . . . . . . ±1°F
Swing (cycle rate or differential) . . . . Heating is adjustable
from 0.2°F to 2.0°F
Cooling is adjustable
from 0.2°F to 2.0°F
Power source . . . . . . . . . . . . . . . 18 to 30 VAC, NEC
Class II, 50/60 Hz for
hardwire (common wire)
Battery power from 2
AA alkaline Energizer
batteries
Operating ambient. . . . . . . . . . . . 32°F to +105°F
(0°C to +41°C)
Operating humidity . . . . . . . . . . . 90% non-condensing
maximum
Dimensions of thermostat . . . . . . 4.7"W x 4.4"H x 1.1"D
Thermostat applications guide
Description
Gas or Oil Heat Yes
Electric Furnace Yes
Heat Pump (No Aux. or Emergency Heat) Yes
Heat Pump (with Aux. or Emergency Heat) Yes
Multi-stage Systems Yes
Heat Only Systems Yes
Cool Only Systems Ye s