Viega 15117 Instruction sheet

1 of 12
Product
Instructions
PI-PR 566440 1017 (Programmable Heat-Cool Thermostat)
Viega LLC, 12303 Airport Way, Ste. 395 • Broomfield, CO 80021 • Ph: 800-976-9819 • Fax: [phone]
Viega®Programmable Heat/Cool Thermostat
The Viega programmable heat/cool thermostat is easy
to install, easy to wire and easy to program. It can be
used for single stage heating and cooling applications,
making it ideal for many different applications. Installation
instructions can be found below.
Part Number 15117
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
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.
Menu
Mon
AM
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) No
Multi-stage Systems No
Heat Only Systems Yes
Cool Only Systems Ye s

2 of 12
Product
Instructions
PI-PR 566440 1017 (Programmable Heat-Cool Thermostat)
Viega LLC, 12303 Airport Way, Ste. 395 • Broomfield, CO 80021 • 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

3 of 12
Product
Instructions
PI-PR 566440 1017 (Programmable Heat-Cool Thermostat)
Viega LLC, 12303 Airport Way, Ste. 395 • Broomfield, CO 80021 • 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
Terminal designations
W - Heat relay
Y - Compressor relay
G - Fan relay
O - Heat pump changeover valve energized in cooling
RC - Transformer power for cooling
RH - Transformer power for heating
B - Heat pump changeover valve energized in heating
C - Common wire from secondary side of cooling
system transformer
Wiring tips:
RH & RC terminals
For single transformer systems, leave the jumper wire in
place between RH and RC. Remove jumper wire for two
transformer systems.
Heat pump systems (with no auxiliary or emergency heat)
If wiring to a heat pump, use a small piece of wire (not
supplied) to connect terminals W and Y.
C terminal
The C (common wire) terminal does not have to be
connected when the thermostat is powered by batteries.
Wire specifications
Use shielded or non-shielded 18-22 gauge thermostat wire.
Caution: Electrical hazard
Failure to disconnect the power before beginning
to install this product can cause electrical shock or
equipment damage.
Warning:
All components of the control system and the
thermostat installation must conform to Class II circuits
per the NEC Code.
RC
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

4 of 12
Product
Instructions
PI-PR 566440 1017 (Programmable Heat-Cool Thermostat)
Viega LLC, 12303 Airport Way, Ste. 395 • Broomfield, CO 80021 • Ph: 800-976-9819 • Fax: [phone]
Typical industry wiring diagrams
Typical 1H/1C System: 1Transformer
COMPRESSOR
RELAY
HEAT RELAY
FAN RELAY
RC
RH
Y
C
W
G
C
R
L2
L1(HOT)
Typical 1H/1C Heat Pump System
COMPRESSOR
RELAY
FAN RELAY
COOL CHANGE
OVER VALVE
HEAT CHANGE
OVER VALVE
OB
C
R
L2
L1(HOT)
RC
RH
Y
C
W
G
Typical 1H/1C System: 2 Transformer
COMPRESSOR
RELAY
HEAT RELAY
FAN RELAY
RC
RH
Y
C
W
G
L2
L1
(HOT)
REMOVE JUMPER
L2
L1(HOT)
C
R
C
R
Power supply
Factory-installed jumper. Remove only when installing on 2-transformer systems
Use either O or B terminals for changeover valve
Use a small piece of wire (not supplied) to connect W and Y terminals
Set fan operation setting to Electric
Optional 24 VAC common connection when thermostat is used in battery power mode
Typical Heat-Only System
HEAT RELAY
RC
RH
Y
C
W
G
C
R
L2
L1(HOT)
Typical Heat Only System With Fan
FAN RELAY
HEAT RELAY
RC
RH
Y
C
W
G
C
R
L2
L1(HOT)
Typical Cool-Only System
FAN RELAY
COMPRESSOR
RELAY
C
R
L2
L1(HOT)
RC
RH
Y
C
W
G
Power supply
Factory-installed jumper. Remove only when installing on 2-transformer systems
Use either O or B terminals for changeover valve
Use a small piece of wire (not supplied) to connect W and Y terminals
Set fan operation setting to Electric
Optional 24 VAC common connection when thermostat is used in batter
y power mode

5 of 12
Product
Instructions
PI-PR 566440 1017 (Programmable Heat-Cool Thermostat)
Viega LLC, 12303 Airport Way, Ste. 395 • Broomfield, CO 80021 • 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 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 "RC" 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

6 of 12
Product
Instructions
PI-PR 566440 1017 (Programmable Heat-Cool Thermostat)
Viega LLC, 12303 Airport Way, Ste. 395 • Broomfield, CO 80021 • Ph: 800-976-9819 • Fax: [phone]
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/ON/CCOM
PUMP
END
SWITCH
ISOLATED
END
SWITCH
ZONE 1 ZONE 2 ZONE 3 ZONE 4
FUSE
(5 AMP MAX)
POWER IN
WCRWCRWC
RWCR
123 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 RW NTCA/B
Thermostat -18050
POWERHEAD (15061, 15070)
FOR USE WITH
STAINLESS MANIFOLD
2 WIRE, 24 V,
POWERHEAD (15064, 15069)
FOR USE WITH
STAINLESS MANIFOLD
4 WIRE, 24 V,
JUMPER
3&4 JUMPER
3&4
IF PRIORITY
IS USED
1234123 4123 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
Connecting Viega thermostats
to the Viega zone control
Part Numbers:
15116, 15117 and 15118
1. Connect the "RC" 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: Thermostat
Line Voltage
Low Voltage
LEGEND: Thermostat
Line Voltage
Low Voltage
LEGEND: Thermostat
Class II
Transformer
C
R
120 V AC
Power Supply
N
L
C
O
B
W
RH
RC
G
Y
Thermostat -15117
Viega
Viega
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 AUXILIAR
Y
DEVICE REQUIRING CONTAC
T
CLOSURE. SEE NOTE 2.
C
O
B
W
RH
RC
G
Y
Thermostat -15117

7 of 12
Product
Instructions
PI-PR 566440 1017 (Programmable Heat-Cool Thermostat)
Viega LLC, 12303 Airport Way, Ste. 395 • Broomfield, CO 80021 • Ph: 800-976-9819 • Fax: [phone]
Thermostat display
1LCD display
2Glow in the dark light button
• Push the glow in the dark button and the screen will
illuminate.
3Fan switch
• Set to AUTO to run the fan anytime heating or
cooling is running.
• Set to ON to run the fan at all times.
4System switch
• Set to cool, off or heat.
5Easy change battery door
• 2- AA batteries included.
6Temperature setpoint buttons
• Use the +or –buttons to adjust the
temperature.
7User Buttons
• Menu
• Tech Setup
• Set Time
• Set Sched
1Indicates the current room temperature
2Time and day of the week
3Low battery indicator: Replace batteries when this
indicator is shown
4Button options
5Program time periods: This thermostat has four
programmable time periods per day.
6System operation indicators: The COOL ON, HEAT
ON or icon will display when the COOL, HEAT OR
(fan) is on.
7Hold is displayed when the thermostat program is
permanently overridden.
8Setpoint: Displays the user selectable setpoint
temperature.
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
63 the batteries must be replaced immediately to avoid
freezing or overheating because the thermostat will shut
the unit off until the battery is changed.
7
8
7
3
2
2
1Hold
LOW
COOL ON
HEAT ON
Sun Mon Tue Wed Thu Fri Sat
Temperature
Tech Set
Next Step
Set Time
Run Sched
Set Sched
Hold
Prev Step
Menu
Done LEAVE SLEEP
RETURN WAKE

8 of 12
Product
Instructions
PI-PR 566440 1017 (Programmable Heat-Cool Thermostat)
Viega LLC, 12303 Airport Way, Ste. 395 • Broomfield, CO 80021 • 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:
High quality alkaline batteries are recommended.
Rechargeable batteries or low quality batteries do not
guarantee a 1-year life span.
Insert 2 AA Alkaline
batteries (included). High
quality alkaline batteries
are recommended.
Simple operating
instructions are found
on the back of the
battery door.

9 of 12
Product
Instructions
PI-PR 566440 1017 (Programmable Heat-Cool Thermostat)
Viega LLC, 12303 Airport Way, Ste. 395 • Broomfield, CO 80021 • Ph: 800-976-9819 • Fax: [phone]
Programming the thermostat
Adjusting the room temperature
The current room temperature is displayed in large text
in the center of the thermostat under the “temperature”
heading. The set point or desired room temperature is in
the upper right corner of the display under “set at”. To
raise or lower the desired “set at” temperature use the
+and –buttons on the top right of the thermostat.
Swing setting tip
Temperature swing, sometimes called differential or cycle
rate, can be customized for this individual application. For
most applications choose a swing setting that is as long
as possible without making the occupants uncomfortable.
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.
Wiring Diagrams
Wiring Diagrams
Tech Settings
Typical 1H/1C System: 1Transformer
Typical 1H/1C System: 2Transformer
COMPRESSOR
RELAY
HEAT RELAY
FAN RELAY
Typical 1H/1C Heat Pump System
COMPRESSOR
RELAY
HEAT RELAY
FAN RELAY
RC
RH
Y
C
W
G
C
R
L2
L1(HOT)
RC
RH
Y
C
W
G
L2
L1
(HOT)
REMOVE JUMPER
L2
L1(HOT)
C
R
COMPRESSOR
RELAY
FAN RELAY
COOL CHANGE
OVER VALVE
HEAT CHANGE
OVER VALVE
OB
C
R
L2
L1(HOT)
RC
RH
Y
C
W
G
C
R
Power supply
Factory-installed jumper. Remove only when installing on 2-transformer systems
Use either O or B terminals for changeover valve
Use a small piece of wire (not supplied) to connect W and Y terminals
Set fan operation setting to Electric
Optional 24 VAC common connection when thermostat is used in battery power mode
Typical Heat-Only System
Typical Heat Only SystemWith Fan
Typical Cool-Only System
HEAT RELAY
RC
RH
Y
C
W
G
C
R
L2
L1(HOT)
FAN RELAY
HEAT RELAY
RC
RH
Y
C
W
G
C
R
L2
L1(HOT)
FAN RELAY
COMPRESSOR
RELAY
C
R
L2
L1(HOT)
RC
RH
Y
C
W
G
Power supply
Factory-installed jumper. Remove only when installing on 2-transformer systems
Use either O or B terminals for changeover valve
Use a small piece of wire (not supplied) to connect W and Y terminals
Set fan operation setting to Electric
Optional 24 VAC common connection when thermostat is used in battery power mode
This thermostat has a technician setup menu for easy installer
conguration. To setup the thermostat for your particular application:
Swing Setting Tip
Temperature swing, sometimes called dierential or cycle rate, can be customized
for this individual application. For most applications choose a swing setting that is
as long as possible without making the occupants uncomfortable.
Technician Setup Menu
LCD Will Show
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 o.
Selecting “ON”will not allow
the compressor to be turned on
for 5 minutes after the last time
the compressor was switched
o. Select “OFF”to remove this
delay.
0
This feature allows the installer
to change the calibration of the
room temperature display. For
example, if the thermostat reads
70˚ degrees and you would like it
to read 72˚ then select +2.
Room
Temperature
Calibration
You can adjust the room
temperature display to read
4˚above or below the factory
calibrated reading.
Tech Settings Adjustment Options
Compressor
Short Cycle
Delay
Default
0N
Cd
0.5
The swing setting often called
“cycle rate”,“dierential”or“
anticipation”is adjustable. A
smaller swing setting will cause
more frequent cycles and a larger
swing setting will cause fewer
cycles.
Cooling
Swing
The cooling swing setting is
adjustable from 0.2˚ to 2˚. For
example: A swing setting of
0.5˚ will turn the cooling on at
approximately 0.5˚ above the
setpoint and turn the cooling
o at approximately 0.5˚ below
the setpoint.
05
0FF
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.
Filter Change
Reminder
You can adjust the lter change
reminder from OFF to 2000
hours of runtime in 50 hour
increments.Tap the second
button from the top left side of
the thermostat to display the
current lter elapsed runtime.
F1
Next Step
Prev Step
100 SE
0
Next Step
Prev Step
CAL
Next Step
Prev Step
Next Step
Prev Step
Use the or keys to change settings and the NEXT STEP or
PREV STEP key to move from one step to another. Note: Only press
the DONE key when you want to exit the Technician Setup options.
1. Press the 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.
Tech Settings Adjustment Options Default
The swing setting often called“cycle
rate”,“dierential”or “anticipation”
is adjustable. A smaller swing
setting will cause more frequent
cycles and a larger swing setting
will cause fewer cycles.
The heating swing setting is
adjustable from 0.2˚ to 2˚. For
example: A swing setting of
0.5˚ will turn the heating on at
approximately 0.5˚ below the
setpoint and turn the heating
o at approximately 0.5˚ above
the setpoint.
Heating
Swing 0.4
04
Next Step
Prev Step
This feature allows you to set a
minimum cool setpoint value.The
setpoint temperature cannot be
lowered below this value.
Cooling
Setpoint
Limit 44
Use the and key to
select the minimum cool
setpoint.
This feature allows you to set a
maximum heat setpoint value.The
setpoint temperature cannot be
raised above this value.
Heating
Setpoint
Limit 90
Use the and key to
select the maximum heat
setpoint.
Next Step
Prev Step
Next Step
Prev Step
CO L
Select F for Fahenheit temperature
read out or select C for Celsius
read out.
F for Fahrenheit
C for Celsius
F or C F
F
FC
You can select either a 12 or 24 hour
clock setting.
12 or 24
Hour Clock 12
Use the and to select 12
or 24 hour clock.
Next Step
Prev Step
Next Step
Prev Step
Tech Settings
HE L
dFHE
LCD Will Show
Wiring Diagrams
Wiring Diagrams
Tech Settings
Typical 1H/1C System: 1Transformer
Typical 1H/1C System: 2Transformer
COMPRESSOR
RELAY
HEAT RELAY
FAN RELAY
Typical 1H/1C Heat Pump System
COMPRESSOR
RELAY
HEAT RELAY
FAN RELAY
RC
RH
Y
C
W
G
C
R
L2
L1(HOT)
RC
RH
Y
C
W
G
L2
L1
(HOT)
REMOVE JUMPER
L2
L1(HOT)
C
R
COMPRESSOR
RELAY
FAN RELAY
COOL CHANGE
OVER VALVE
HEAT CHANGE
OVER VALVE
OB
C
R
L2
L1(HOT)
RC
RH
Y
C
W
G
C
R
Power supply
Factory-installed jumper. Remove only when installing on 2-transformer systems
Use either O or B terminals for changeover valve
Use a small piece of wire (not supplied) to connect W and Y terminals
Set fan operation setting to Electric
Optional 24 VAC common connection when thermostat is used in battery power mode
Typical Heat-Only System
Typical Heat Only SystemWith Fan
Typical Cool-Only System
HEAT RELAY
RC
RH
Y
C
W
G
C
R
L2
L1(HOT)
FAN RELAY
HEAT RELAY
RC
RH
Y
C
W
G
C
R
L2
L1(HOT)
FAN RELAY
COMPRESSOR
RELAY
C
R
L2
L1(HOT)
RC
RH
Y
C
W
G
Power supply
Factory-installed jumper. Remove only when installing on 2-transformer systems
Use either O or B terminals for changeover valve
Use a small piece of wire (not supplied) to connect W and Y terminals
Set fan operation setting to Electric
Optional 24 VAC common connection when thermostat is used in battery power mode
This thermostat has a technician setup menu for easy installer
conguration. To setup the thermostat for your particular application:
Swing Setting Tip
Temperature swing, sometimes called dierential or cycle rate, can be customized
for this individual application. For most applications choose a swing setting that is
as long as possible without making the occupants uncomfortable.
Technician Setup Menu
LCD Will Show
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 o.
Selecting “ON”will not allow
the compressor to be turned on
for 5 minutes after the last time
the compressor was switched
o. Select “OFF”to remove this
delay.
0
This feature allows the installer
to change the calibration of the
room temperature display. For
example, if the thermostat reads
70˚ degrees and you would like it
to read 72˚ then select +2.
Room
Temperature
Calibration
You can adjust the room
temperature display to read
4˚above or below the factory
calibrated reading.
Tech Settings Adjustment Options
Compressor
Short Cycle
Delay
Default
0N
Cd
0.5
The swing setting often called
“cycle rate”,“dierential”or“
anticipation”is adjustable. A
smaller swing setting will cause
more frequent cycles and a larger
swing setting will cause fewer
cycles.
Cooling
Swing
The cooling swing setting is
adjustable from 0.2˚ to 2˚. For
example: A swing setting of
0.5˚ will turn the cooling on at
approximately 0.5˚ above the
setpoint and turn the cooling
o at approximately 0.5˚ below
the setpoint.
05
0FF
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.
Filter Change
Reminder
You can adjust the lter change
reminder from OFF to 2000
hours of runtime in 50 hour
increments.Tap the second
button from the top left side of
the thermostat to display the
current lter elapsed runtime.
F1
Next Step
Prev Step
100 SE
0
Next Step
Prev Step
CAL
Next Step
Prev Step
Next Step
Prev Step
Use the or keys to change settings and the NEXT STEP or
PREV STEP key to move from one step to another. Note: Only press
the DONE key when you want to exit the Technician Setup options.
1. Press the 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.
Tech Settings Adjustment Options Default
The swing setting often called“cycle
rate”,“dierential”or “anticipation”
is adjustable. A smaller swing
setting will cause more frequent
cycles and a larger swing setting
will cause fewer cycles.
The heating swing setting is
adjustable from 0.2˚ to 2˚. For
example: A swing setting of
0.5˚ will turn the heating on at
approximately 0.5˚ below the
setpoint and turn the heating
o at approximately 0.5˚ above
the setpoint.
Heating
Swing 0.4
04
Next Step
Prev Step
This feature allows you to set a
minimum cool setpoint value.The
setpoint temperature cannot be
lowered below this value.
Cooling
Setpoint
Limit 44
Use the and key to
select the minimum cool
setpoint.
This feature allows you to set a
maximum heat setpoint value.The
setpoint temperature cannot be
raised above this value.
Heating
Setpoint
Limit 90
Use the and key to
select the maximum heat
setpoint.
Next Step
Prev Step
Next Step
Prev Step
CO L
Select F for Fahenheit temperature
read out or select C for Celsius
read out.
F for Fahrenheit
C for Celsius
F or C F
F
FC
You can select either a 12 or 24 hour
clock setting.
12 or 24
Hour Clock 12
Use the and to select 12
or 24 hour clock.
Next Step
Prev Step
Next Step
Prev Step
Tech Settings
HE L
dFHE
LCD Will Show
Wiring Diagrams
Wiring Diagrams
Tech Settings
Typical 1H/1C System: 1Transformer
Typical 1H/1C System: 2Transformer
COMPRESSOR
RELAY
HEAT RELAY
FAN RELAY
Typical 1H/1C Heat Pump System
COMPRESSOR
RELAY
HEAT RELAY
FAN RELAY
RC
RH
Y
C
W
G
C
R
L2
L1(HOT)
RC
RH
Y
C
W
G
L2
L1
(HOT)
REMOVE JUMPER
L2
L1(HOT)
C
R
COMPRESSOR
RELAY
FAN RELAY
COOL CHANGE
OVER VALVE
HEAT CHANGE
OVER VALVE
OB
C
R
L2
L1(HOT)
RC
RH
Y
C
W
G
C
R
Power supply
Factory-installed jumper. Remove only when installing on 2-transformer systems
Use either O or B terminals for changeover valve
Use a small piece of wire (not supplied) to connect W and Y terminals
Set fan operation setting to Electric
Optional 24 VAC common connection when thermostat is used in battery power mode
Typical Heat-Only System
Typical Heat Only SystemWith Fan
Typical Cool-Only System
HEAT RELAY
RC
RH
Y
C
W
G
C
R
L2
L1(HOT)
FAN RELAY
HEAT RELAY
RC
RH
Y
C
W
G
C
R
L2
L1(HOT)
FAN RELAY
COMPRESSOR
RELAY
C
R
L2
L1(HOT)
RC
RH
Y
C
W
G
Power supply
Factory-installed jumper. Remove only when installing on 2-transformer systems
Use either O or B terminals for changeover valve
Use a small piece of wire (not supplied) to connect W and Y terminals
Set fan operation setting to Electric
Optional 24 VAC common connection when thermostat is used in battery power mode
This thermostat has a technician setup menu for easy installer
conguration. To setup the thermostat for your particular application:
Swing Setting Tip
Temperature swing, sometimes called dierential or cycle rate, can be customized
for this individual application. For most applications choose a swing setting that is
as long as possible without making the occupants uncomfortable.
Technician Setup Menu
LCD Will Show
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 o.
Selecting “ON”will not allow
the compressor to be turned on
for 5 minutes after the last time
the compressor was switched
o. Select “OFF”to remove this
delay.
0
This feature allows the installer
to change the calibration of the
room temperature display. For
example, if the thermostat reads
70˚ degrees and you would like it
to read 72˚ then select +2.
Room
Temperature
Calibration
You can adjust the room
temperature display to read
4˚above or below the factory
calibrated reading.
Tech Settings Adjustment Options
Compressor
Short Cycle
Delay
Default
0N
Cd
0.5
The swing setting often called
“cycle rate”,“dierential”or“
anticipation”is adjustable. A
smaller swing setting will cause
more frequent cycles and a larger
swing setting will cause fewer
cycles.
Cooling
Swing
The cooling swing setting is
adjustable from 0.2˚ to 2˚. For
example: A swing setting of
0.5˚ will turn the cooling on at
approximately 0.5˚ above the
setpoint and turn the cooling
o at approximately 0.5˚ below
the setpoint.
05
0FF
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.
Filter Change
Reminder
You can adjust the lter change
reminder from OFF to 2000
hours of runtime in 50 hour
increments.Tap the second
button from the top left side of
the thermostat to display the
current lter elapsed runtime.
F1
Next Step
Prev Step
100 SE
0
Next Step
Prev Step
CAL
Next Step
Prev Step
Next Step
Prev Step
Use the or keys to change settings and the NEXT STEP or
PREV STEP key to move from one step to another. Note: Only press
the DONE key when you want to exit the Technician Setup options.
1. Press the 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.
Tech Settings Adjustment Options Default
The swing setting often called“cycle
rate”,“dierential”or “anticipation”
is adjustable. A smaller swing
setting will cause more frequent
cycles and a larger swing setting
will cause fewer cycles.
The heating swing setting is
adjustable from 0.2˚ to 2˚. For
example: A swing setting of
0.5˚ will turn the heating on at
approximately 0.5˚ below the
setpoint and turn the heating
o at approximately 0.5˚ above
the setpoint.
Heating
Swing 0.4
04
Next Step
Prev Step
This feature allows you to set a
minimum cool setpoint value.The
setpoint temperature cannot be
lowered below this value.
Cooling
Setpoint
Limit 44
Use the and key to
select the minimum cool
setpoint.
This feature allows you to set a
maximum heat setpoint value.The
setpoint temperature cannot be
raised above this value.
Heating
Setpoint
Limit 90
Use the and key to
select the maximum heat
setpoint.
Next Step
Prev Step
Next Step
Prev Step
CO L
Select F for Fahenheit temperature
read out or select C for Celsius
read out.
F for Fahrenheit
C for Celsius
F or C F
F
FC
You can select either a 12 or 24 hour
clock setting.
12 or 24
Hour Clock 12
Use the and to select 12
or 24 hour clock.
Next Step
Prev Step
Next Step
Prev Step
Tech Settings
HE L
dFHE
LCD Will Show
Wiring Diagrams
Wiring Diagrams
Tech Settings
Typical 1H/1C System: 1Transformer
Typical 1H/1C System: 2Transformer
COMPRESSOR
RELAY
HEAT RELAY
FAN RELAY
Typical 1H/1C Heat Pump System
COMPRESSOR
RELAY
HEAT RELAY
FAN RELAY
RC
RH
Y
C
W
G
C
R
L2
L1(HOT)
RC
RH
Y
C
W
G
L2
L1
(HOT)
REMOVE JUMPER
L2
L1(HOT)
C
R
COMPRESSOR
RELAY
FAN RELAY
COOL CHANGE
OVER VALVE
HEAT CHANGE
OVER VALVE
OB
C
R
L2
L1(HOT)
RC
RH
Y
C
W
G
C
R
Power supply
Factory-installed jumper. Remove only when installing on 2-transformer systems
Use either O or B terminals for changeover valve
Use a small piece of wire (not supplied) to connect W and Y terminals
Set fan operation setting to Electric
Optional 24 VAC common connection when thermostat is used in battery power mode
Typical Heat-Only System
Typical Heat Only SystemWith Fan
Typical Cool-Only System
HEAT RELAY
RC
RH
Y
C
W
G
C
R
L2
L1(HOT)
FAN RELAY
HEAT RELAY
RC
RH
Y
C
W
G
C
R
L2
L1(HOT)
FAN RELAY
COMPRESSOR
RELAY
C
R
L2
L1(HOT)
RC
RH
Y
C
W
G
Power supply
Factory-installed jumper. Remove only when installing on 2-transformer systems
Use either O or B terminals for changeover valve
Use a small piece of wire (not supplied) to connect W and Y terminals
Set fan operation setting to Electric
Optional 24 VAC common connection when thermostat is used in battery power mode
This thermostat has a technician setup menu for easy installer
conguration. To setup the thermostat for your particular application:
Swing Setting Tip
Temperature swing, sometimes called dierential or cycle rate, can be customized
for this individual application. For most applications choose a swing setting that is
as long as possible without making the occupants uncomfortable.
Technician Setup Menu
LCD Will Show
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 o.
Selecting “ON”will not allow
the compressor to be turned on
for 5 minutes after the last time
the compressor was switched
o. Select “OFF”to remove this
delay.
0
This feature allows the installer
to change the calibration of the
room temperature display. For
example, if the thermostat reads
70˚ degrees and you would like it
to read 72˚ then select +2.
Room
Temperature
Calibration
You can adjust the room
temperature display to read
4˚above or below the factory
calibrated reading.
Tech Settings Adjustment Options
Compressor
Short Cycle
Delay
Default
0N
Cd
0.5
The swing setting often called
“cycle rate”,“dierential”or“
anticipation”is adjustable. A
smaller swing setting will cause
more frequent cycles and a larger
swing setting will cause fewer
cycles.
Cooling
Swing
The cooling swing setting is
adjustable from 0.2˚ to 2˚. For
example: A swing setting of
0.5˚ will turn the cooling on at
approximately 0.5˚ above the
setpoint and turn the cooling
o at approximately 0.5˚ below
the setpoint.
05
0FF
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.
Filter Change
Reminder
You can adjust the lter change
reminder from OFF to 2000
hours of runtime in 50 hour
increments.Tap the second
button from the top left side of
the thermostat to display the
current lter elapsed runtime.
F1
Next Step
Prev Step
100 SE
0
Next Step
Prev Step
CAL
Next Step
Prev Step
Next Step
Prev Step
Use the or keys to change settings and the NEXT STEP or
PREV STEP key to move from one step to another. Note: Only press
the DONE key when you want to exit the Technician Setup options.
1. Press the 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.
Tech Settings Adjustment Options Default
The swing setting often called“cycle
rate”,“dierential”or “anticipation”
is adjustable. A smaller swing
setting will cause more frequent
cycles and a larger swing setting
will cause fewer cycles.
The heating swing setting is
adjustable from 0.2˚ to 2˚. For
example: A swing setting of
0.5˚ will turn the heating on at
approximately 0.5˚ below the
setpoint and turn the heating
o at approximately 0.5˚ above
the setpoint.
Heating
Swing 0.4
04
Next Step
Prev Step
This feature allows you to set a
minimum cool setpoint value.The
setpoint temperature cannot be
lowered below this value.
Cooling
Setpoint
Limit 44
Use the and key to
select the minimum cool
setpoint.
This feature allows you to set a
maximum heat setpoint value.The
setpoint temperature cannot be
raised above this value.
Heating
Setpoint
Limit 90
Use the and key to
select the maximum heat
setpoint.
Next Step
Prev Step
Next Step
Prev Step
CO L
Select F for Fahenheit temperature
read out or select C for Celsius
read out.
F for Fahrenheit
C for Celsius
F or C F
F
FC
You can select either a 12 or 24 hour
clock setting.
12 or 24
Hour Clock 12
Use the and to select 12
or 24 hour clock.
Next Step
Prev Step
Next Step
Prev Step
Tech Settings
HE L
dFHE
LCD Will Show
ProgrammingProgramming
Tech Settings & Programming Programming
This feature will start heating early
to bring the building temperature
to its programmed setpoint by the
begining of the WAKE time period.
Morning
Recovery ON
You can congure this thermostat
to have 5+1+1 programming or
non programmable.
Program
Options 5d
Use the and key to
select 5d for 5+1+1, or
0d for non programmable.
Next Step
Prev Step
Next Step
Prev Step
Use the and key to turn
ON or OFF.
Tech Settings Adjustment Options Default
LCD Will Show
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.
Fan
Operation GAS
GAS - GS
or
ELEC - EL
Next Step
Prev Step
Set Time
1. With system switch set to OFF, press the MENU button
2. Press SET TIME
3. Day of the week will be ashing. Use the or key
to select the current day of the week.
4. Press NEXT STEP
5. The current hour is ashing. 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 ashing. Use the or key to
select current minutes.
8. Press DONE when completed.
(If using programming)
Programming
All of our programmable thermostats are shipped with an
energy saving pre-program. You can customize this default
program by following the steps on page 14.
Your thermostat can be programmed to have all the weekdays
the same, a seperate program for Saturday, and a seperate
program for Sunday. There are four time periods for each
program (WAKE, LEAVE, RETURN, SLEEP).
Set Program Schedule
1. Select HEAT or COOL with the system switch. Note: You have
to program heat and cool each seperately.
2. Press the MENU button (If menu does not appear rst press RUN SCHED)
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 ashing. Use the or key to make your time
selection for the weekday WAKE time period.
5. Press NEXT STEP
6. The setpoint temperature is ashing. Use the or key
to make your setpoint selection for the weekday wake period.
7. Press NEXT STEP
8. Repeat steps 4 thru 7 for weekday LEAVE time period, for
weekday RETURN time period, and for weekday SLEEP time
period.
To customize your program schedule, follow these steps
Weekday:
Repeat steps 4 thru 7 for the Saturday WAKE time period, for the
Saturday LEAVE time period, for the Saturday RETURN time
period, and for the Saturday SLEEP time period.
Saturday:
Repeat steps 4 thru 7 for the Sunday WAKE time period, for the
Sunday LEAVE time period, for the Sunday RETURN time period,
and for the Sunday SLEEP time period.
Sunday:
You can use the table below to plan your customized program schedule.

10 of 12
Product
Instructions
PI-PR 566440 1017 (Programmable Heat-Cool Thermostat)
Viega LLC, 12303 Airport Way, Ste. 395 • Broomfield, CO 80021 • Ph: 800-976-9819 • Fax: [phone]
Programming the thermostat
Set time (if using programming)
1. With system switch set to OFF, press the MENU
button.
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.
Temporary and Permanent Hold Feature (if using
programming)
When cool or heat is turned on, the thermostat will display
HOLD and RUN SCHED on the left of your screen when
you press the +or –button.
Temporary Hold: At this time if you do nothing, the
temperature will remain at this setpoint temporarily until
next time period.
Permanent Hold: If you press the HOLD key on the left of
your screen, you will see HOLD appear below the setpoint
temperature in the display. The thermostat will now
permanently stay at this setpoint and can be adjusted
using the +or –keys.
To Return to Running Schedule: Press the RUN SCHED
button on the left of your screen to exit either temporary
or permanent hold.
Filter Change Reminder
If your installing contractor has congured the thermostat
to remind you when the air lter needs to be changed, you
will see FILT in the display when your air lter needs to be
changed.
Resetting the filter change reminder: When FILT
reminder is displayed, you should change your air lter
and reset the reminder by holding down the second
button from the top left side of the thermostat for 3
seconds.
All our programmable thermostats are shipped with an
energy saving pre-program. You can customize this
default program by following the steps below.
Your thermostat can be programmed to have all the
weekdays the same, a separate program for Saturday,
and a separate program for Sunday. There are four time
periods for each program for each program (WAKE,
LEAVE, RETURN, SLEEP).
ProgrammingProgramming
Tech Settings & Programming Programming
This feature will start heating early
to bring the building temperature
to its programmed setpoint by the
begining of the WAKE time period.
Morning
Recovery ON
You can congure this thermostat
to have 5+1+1 programming or
non programmable.
Program
Options 5d
Use the and key to
select 5d for 5+1+1, or
0d for non programmable.
Next Step
Prev Step
Next Step
Prev Step
Use the and key to turn
ON or OFF.
Tech Settings Adjustment Options Default
LCD Will Show
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.
Fan
Operation GAS
GAS - GS
or
ELEC - EL
Next Step
Prev Step
Set Time
1. With system switch set to OFF, press the MENU button
2. Press SET TIME
3. Day of the week will be ashing. Use the or key
to select the current day of the week.
4. Press NEXT STEP
5. The current hour is ashing. 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 ashing. Use the or key to
select current minutes.
8. Press DONE when completed.
(If using programming)
Programming
All of our programmable thermostats are shipped with an
energy saving pre-program. You can customize this default
program by following the steps on page 14.
Your thermostat can be programmed to have all the weekdays
the same, a seperate program for Saturday, and a seperate
program for Sunday. There are four time periods for each
program (WAKE, LEAVE, RETURN, SLEEP).
Set Program Schedule
1. Select HEAT or COOL with the system switch. Note: You have
to program heat and cool each seperately.
2. Press the MENU button (If menu does not appear rst press RUN SCHED)
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 ashing. Use the or key to make your time
selection for the weekday WAKE time period.
5. Press NEXT STEP
6. The setpoint temperature is ashing. Use the or key
to make your setpoint selection for the weekday wake period.
7. Press NEXT STEP
8. Repeat steps 4 thru 7 for weekday LEAVE time period, for
weekday RETURN time period, and for weekday SLEEP time
period.
To customize your program schedule, follow these steps
Weekday:
Repeat steps 4 thru 7 for the Saturday WAKE time period, for the
Saturday LEAVE time period, for the Saturday RETURN time
period, and for the Saturday SLEEP time period.
Saturday:
Repeat steps 4 thru 7 for the Sunday WAKE time period, for the
Sunday LEAVE time period, for the Sunday RETURN time period,
and for the Sunday SLEEP time period.
Sunday:
You can use the table below to plan your customized program schedule.

11 of 12
Product
Instructions
PI-PR 566440 1017 (Programmable Heat-Cool Thermostat)
Viega LLC, 12303 Airport Way, Ste. 395 • Broomfield, CO 80021 • Ph: 800-976-9819 • Fax: [phone]
You can use the table below to plan your customized
program schedule.
Set program schedule
To customize your program schedule, follow these steps:
Weekday:
1. Select HEAT or COOL from the system switch.
NOTE: You have to program heat and cool each
separately.
2. Press the MENU button. (If menu does not appear
first press RUN SCHED.)
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.
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.
ProgrammingProgramming
Tech Settings & Programming Programming
This feature will start heating early
to bring the building temperature
to its programmed setpoint by the
begining of the WAKE time period.
Morning
Recovery ON
You can congure this thermostat
to have 5+1+1 programming or
non programmable.
Program
Options 5d
Use the and key to
select 5d for 5+1+1, or
0d for non programmable.
Next Step
Prev Step
Next Step
Prev Step
Use the and key to turn
ON or OFF.
Tech Settings Adjustment Options Default
LCD Will Show
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.
Fan
Operation GAS
GAS - GS
or
ELEC - EL
Next Step
Prev Step
Set Time
1. With system switch set to OFF, press the MENU button
2. Press SET TIME
3. Day of the week will be ashing. Use the or key
to select the current day of the week.
4. Press NEXT STEP
5. The current hour is ashing. 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 ashing. Use the or key to
select current minutes.
8. Press DONE when completed.
(If using programming)
Programming
All of our programmable thermostats are shipped with an
energy saving pre-program. You can customize this default
program by following the steps on page 14.
Your thermostat can be programmed to have all the weekdays
the same, a seperate program for Saturday, and a seperate
program for Sunday. There are four time periods for each
program (WAKE, LEAVE, RETURN, SLEEP).
Set Program Schedule
1. Select HEAT or COOL with the system switch. Note: You have
to program heat and cool each seperately.
2. Press the MENU button (If menu does not appear rst press RUN SCHED)
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 ashing. Use the or key to make your time
selection for the weekday WAKE time period.
5. Press NEXT STEP
6. The setpoint temperature is ashing. Use the or key
to make your setpoint selection for the weekday wake period.
7. Press NEXT STEP
8. Repeat steps 4 thru 7 for weekday LEAVE time period, for
weekday RETURN time period, and for weekday SLEEP time
period.
To customize your program schedule, follow these steps
Weekday:
Repeat steps 4 thru 7 for the Saturday WAKE time period, for the
Saturday LEAVE time period, for the Saturday RETURN time
period, and for the Saturday SLEEP time period.
Saturday:
Repeat steps 4 thru 7 for the Sunday WAKE time period, for the
Sunday LEAVE time period, for the Sunday RETURN time period,
and for the Sunday SLEEP time period.
Sunday:
You can use the table below to plan your customized program schedule.

12 of 12
Product
Instructions
PI-PR 566440 1017 (Programmable Heat-Cool Thermostat)
Viega LLC, 12303 Airport Way, Ste. 395 • Broomfield, CO 80021 • Ph: 800-976-9819 • Fax: [phone]
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 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 0.8"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) No
Multi-stage Systems No
Heat Only Systems Yes
Cool Only Systems Ye s
This document subject to updates. For the most current Viega technical literature please visit www.viega.us.
Para ver las instrucciones en español visite www.viega.us
Pour obtenir des instructions en français visite www.viega.us
Viega products are designed to be installed by licensed and trained plumbing and mechanical professionals who are familiar
with Viega products and their installation. Installation by non-professionals may void Viega LLC’s warranty.