Viega 15118 User manual

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User Guide
Viega Multifunctional Heat/Cool
Thermostat
UG-HC 566441 1219 Multifunctional Thermostat (EN)
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.
Part Number 15118
Viega products are designed to be
installed by licensed and trained
plumbing, mechanical, and electrical
professionals who are familiar with Viega
products and their installation.
Installation by non-professionals may
void Viega LLC’s warranty.
This document is subject to updates.
For the most current Viega technical
literature please visit www.viega.us.
Pick an installation location that is
easy for the user to access. The
temperature of the location should be
representative of the building
Installation Tips
Applications Guide
The Multifunctional Heat/Cool Thermostat can
be use for the following applications:
■ Gas or Oil Heat
■ Electric Furnace
■ Heat Pump (No Aux. or Emergency Heat)
■ Heat Pump (with Aux. or Emergency Heat)
■ Multi-stage Systems
■ Heat Only Systems
■ Cool Only Systems
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.
Do not install thermostat in locations:
■ Close to heating/cooling emitters
■ 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
No
No
No Yes

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Viega Multifunctional Thermostat User Guide
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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 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.
To insure a solid 󶈵t between the thermostat and
the subbase:
■ Mount subbase to a 󶈶at wall or electrical box.
■ Use screws provided.
■ Drywall anchors should be 󶈶ush with the wall.
■ Wires should be pushed into the wall.
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.

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Viega Multifunctional Thermostat User Guide
UG-HC 566441 1219 Multifunctional Thermostat (EN)
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.
To release battery cover press
󶈵nger bevel on the left side and lift
the cover to access batteries.
Simple operating instructions are found on the
back of the battery door.
Important:
High quality alkaline batteries are
recommended. Rechargeable batteries
or low quality batteries do not guarantee a
1-year life span.
In systems with no emergency heat
relay a jumper can be installed
between E and W2 to turn thermostat
into a single stage control.
Thermostat Wiring
■ 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.
■ Loosen the terminal block screws. Insert
wires then retighten terminal block screws.
Viega Thermostat Terminal
Conversion
Thermostats
15116
15117
Thermostat
15118
Zone Controls
18060
18062
18050
Zone Control
18032
Thermostat
18029
C
W
C
W/E
L
N
R
C
W
RH
RC
RH
RC
Power Type
■ 3 wire
■ 3 wire with battery backup
■ 2 wire with battery
Wiring Tips
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

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Viega Multifunctional Thermostat User Guide
UG-HC 566441 1219 Multifunctional Thermostat (EN)
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 cooling Heat pump changeover
valve energized in cooling
Heat pump changeover
valve energized in cooling
G Fan relay Fan relay Fan relay
W/E First stage of heat First stage of emergency
heat
First stage of emergency
heat
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
Auxiliary heat relay,
third stage of heat
This thermostat is shipped from the factory to operate
a conventional heating and cooling system. See
“Programming the Thermostat” on page 10 to
configure the thermostat for other applications.
WARNING!
All components of the control system
and the thermostat installation must
conform to Class II circuits per the NEC Code.
Terminal Designations

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Viega Multifunctional Thermostat User Guide
UG-HC 566441 1219 Multifunctional Thermostat (EN)
In many heat pump systems with no
emergency heat relay a jumper can be
installed between E and W2.
Typical Industry Wiring Diagrams
Power supply
Factory-installed jumper. Remove only
when installing on 2-transformer systems
Use either O or B terminals for changeover
valve
Optional 24 VAC common connection when
thermostat is used in battery power mode
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Typical 2H/2C System: 1 Transformer Typical 2H/2C System: 2 Transformers
Typical 3H/2C Heat Pump System
Typical Heat Only System with Fan
Typical Cool-Only System
Typical Heat Only System with Fan
(HOT)
(HOT)
(HOT)
(HOT)
Fan Relay
Compressor
Relay
Heat
Relay
Compressor
Relay 2
Auxillary Heat
Change Over Valve
Cool Change Over Valve
Fan Relay
Heat Relay
(HOT)
Compressor
Relay
Compressor
Relay
Compressor
Relay
Compressor
Relay 2 Compressor
Relay 2
Heat
Relay HeatRelay
Heat
Relay 2 Heat
Relay 2
Emergency
Heat Relay
Fan
Relay
Fan
Relay
Fan Relay
(HOT)
(HOT)
Remove
Jumper

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Viega Multifunctional Thermostat User Guide
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Viega Wiring Diagrams
Connecting Viega Thermostats and Zone Valves to the Viega Zone Control
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Viega
Part Numbers: 15116, 15117, and 15118
■ Connect the RC terminal from the
thermostat to R terminal on the zone
control.
■ 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.
■ Connect the C terminal from the
thermostat to the C terminal on the
zone control. C terminal is optional
but recommended when using with
batteries.
Zone Control (18060, 18062)
with Optional Priority
Legend: Thermostat
Low Voltage
Line Voltage
Thermostat
18050
Thermostat 15118Thermostat 15117Thermostat 15116
120 V AC
Power Supply
Zone 1 Zone 2 Zone 3 Zone 4
Zone 4 Priority

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Viega Multifunctional Thermostat User Guide
UG-HC 566441 1219 Multifunctional Thermostat (EN)
Viega Wiring Diagrams
Connecting Viega Thermostats to the Viega Zone Control
Legend: Thermostat
Low Voltage
Line Voltage
Part Numbers: 15116, 15117, and 15118
■ Connect the RC terminal from the
thermostat to R terminal on the zone
control.
■ 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.
■ Connect the C terminal from the
thermostat to the C terminal on the
zone control. C terminal is optional
but recommended when using with
batteries.
Viega
Viega
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Viega
Viega
Powerhead (15061)
2 Wire, 24 V
For use with Stainless Manifold
Thermostat 15116 Thermostat 15117
Thermostat
18050
Powerhead
(15064)
4 Wire, 24 V,
For use with
Stainless
Manifold
Zone Control (18060, 18062)
with Optional Priority
Thermostat 15118

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Viega Multifunctional Thermostat User Guide
UG-HC 566441 1219 Multifunctional Thermostat (EN)
C
O
B
W/E
RH
G
Y
Thermostat -15118
W2 Y2
RC
Class II
Transformer
C
R
120 V AC
Power Supply
N
L
Viega
Viega
Black
White
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
C
O
B
W/E
RH
G
Y
Thermostat -15118
W2 Y2
RC
Class II
Transformer
C
R
120 V AC
Power Supply
N
L
Red
Red Yellow
Yellow
Viega
To T-T boiler
contact, pump
replay or other
auxiliary device
requiring contact
closure.
Legend: Thermostat
Low Voltage
Line Voltage

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Viega Multifunctional Thermostat User Guide
UG-HC 566441 1219 Multifunctional Thermostat (EN)
Programmable
Time Periods
Residential
uses 4 time periods:
Wake, Return,
Leave and Sleep.
Commercial
uses 2 or 4 time periods
that appear in the text
󶈵eld: Occupied and
Unoccupied.
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 first “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.
Thermostat Display
1 LCD Display
2 Glow in the dark light button
3 Set point buttons
4-6 Program buttons
7 Menu button
8 Fan button
9 System button
10 Button/battery access door
11 Battery cover
Days of the week
and time.
Indicates the current
room temperature.
Displays the user
selectable setpoint
temperature.
Low Battery
Indicator
Replace batteries
when this indicator
is shown.
System Operation
Indicators
If these or the Fan
indicator are 󶈶ashing,
it means that they are
in a delay of some
type (Compressor
Delay, Cooling Fan
Delay, Staging Delay).
Staging Indicators
+1 will appear in
the display when
second stage of
heat or cool is on.
+2 will appear for
third stage of heat.
HOLD is displayed
when thermostat
program is
permanently
overridden.
Program Menu Options
Show di󶈴erent options during programming.
1
11
10
456789
3
2

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3 Configure the installer options as desired
using the table below.
4 Use the + or - keys to change settings and
the NEXT STEP or PREV STEP key to move
from one option to another.
5 Press DONE key to exit.
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 three
seconds. This three second delay is designed
so that homeowners do not accidentally
access the installer settings.
Only press DONE key when you want
to exit the Technician Setup options.
Technician Setup Steps LCD will Show Adjustment Options Factory
Default
Settings
Filter Change Reminder
This feature will flash FILT in the
display after the elapsed run time to
remind the user to change the filter. A
setting of OFF will disable this feature.
You can adjust the filter
change reminder from
OFF to 2000 hours
of runtime in 50 hour
increments.
Off
Room Temperature Calibration
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.
You can adjust the room
temperature display to
read -4°F to +4°F above
or below the factory
calibrated reading.
0°F
Minimum Compressor On Time
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.
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.
Off
Compressor Short Cycle Delay
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.
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.
On
Technician Setup Steps
To lock the keypad hold down the +
and – keys for three seconds. You will
see a lock in the display. To unlock
the key pad hold down the + and – keys for
three seconds.

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Technician Setup Steps LCD will Show Adjustment Options Factory
Default
Settings
Cooling Swing
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 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.
0.5°F
Heating Swing
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 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.
0.4°F
Keypad Lockout
Keypad lockout allows you to
configure the thermostat so that none
or some of the keys do not function.
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: See Keypad
lockout instructions in
the info box below.
PA
Heating Temperature Setpoint Limit
This feature allows you to set a
maximum heat setpoint value. The
setpoint temperature cannot be raised
above this value.
Use the + or - key to
select the maximum
heat setpoint.
Range 44°F - 90°F
90°F
Cooling Temperature Setpoint Limit
This feature allows you to set a
minimum cool setpoint value. The
setpoint temperature cannot be
lowered below this value.
Use the + or - key to
select the minimum cool
setpoint.
Range 44°F - 90°F
44°F

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Technician Setup Steps LCD will Show Adjustment Options Factory
Default
Settings
°F or °C
This feature allows you to display
temperatures in either Fahrenheit or
Celsius.
°F for Fahrenheit
°C for Celsius
°F
12 or 24 Hour Clock
You can select either a 12 or 24 hour
clock setting.
12 or 24 Hour Clock
Use the + or - key to
select either a 12 or 24
hour clock.
12 hour
clock
Fan Operation
Select GAS for systems that control
the fan during a call for heat.
Select ELE to have the thermostat
control the fan during a call for heat.
GAS or ELE GAS
Morning Recovery
This feature will start heating early to
bring the building temperature to its
programmed setpoint by the beginning
of the time period (Wake, Occupied).
Use the + or - key to
turn on or off.
ON
Program Options
You can configure this thermostat
to have a 7 day program, a 5+1+1
program or nonprogrammable.
Use the + or - key to
select 7d for 7 day, 5d
for 5+1+1, or 0d for
nonprogrammable.
5d
Time Periods
You can configure this thermostat
to have 2 or 4 programmable time
periods per day. The 4 time periods
are: Wake, Leave, Return, and Sleep.
2C time periods are Occupied and
Unoccupied.
4C time periods are Occupied 1,
Unoccupied 1, Occupied 2, and
Unoccupied 2.
Use the + or - key to
select 4, 2C or 4C time
periods per day.
4
Pre Occupancy Fan
The pre occupancy fan settings will
energize the fan before the occupied
time to provide ventilation prior to
scheduled occupancy.
This feature only shows if technician
setup step for time periods is set to
2C or 4C.
You can select the pre
occupancy fan from
OFF, 1, 2, or 3 hours.
If 1, 2, or 3 is selected,
the fan will turn on that
many hours prior to the
scheduled occupied
time period.
OFF

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Technician Setup Steps LCD will Show Adjustment Options Factory
Default
Settings
Display Light
The display light can be configured to
stay on at all times or come on when
any key is pressed.
Hardware only: keeping the display
light continually ON will greatly reduce
battery life.
Use the + or - key to
turn on or off.
OFF configures display
light to come on when
the light key or any key
on screen is pressed.
ON configures the
display light to stay on.
OFF
Contractor Call Number
Allows you to put your phone number
in the display.
You can choose ON or OFF
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 three seconds. To
remove the phone number from the display,
hold the light button for three seconds.
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.
OFF
Beep
When any key is pressed an audible
beep will sound.
You can choose ON or OFF
ON is selected the beep
will sound.
OFF is selected, there is
no sound.
ON
Heat Pump
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 first stage of heat & cool,
W/E will be emergency heat relay & W2
will be auxiliary heat relay.
OFF configures the
thermostat for non heat
pump systems.
ON configures the
thermostat for heat
pump systems.
OFF
System Set
You can configure 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.
Use the + or - key until
the desired application
is flashing.
Heat-Off-
Cool

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Technician Setup Steps LCD will Show Adjustment Options Factory
Default
Settings
Gas Auxiliary for Heat Pump
This option will turn the heat pump
off 45 seconds after the auxiliary heat
relay turns on.
For 2 stage heat applications, the first
stage will turn off 45 seconds after the
auxiliary stage turns on.
For 3 stage heat applications, the first
and second stage will turn off 45 seconds
after the auxiliary stage turns on.
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.
OFF
Stages of Heat
You can configure the thermostat to
operate a 3 stage heat pump system.
2H 2C = 2 heat, 2 cool
3H 2C = 3 heat, 2 cool
This feature only shows if Technician
Setup step for heat pump is set to ON.
Use the + or - key to
change between 2 heat
and 3 heat
2 heat will use Y1 as
first stage and W2 as
auxiliary.
3 heat will use Y1
as first stage, Y2 as
second stage and W2
as auxiliary.
2 Stages
Cooling Fan Delay
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.
You can select the
Cooling Fan Delay from
OFF, 15, 30, 60 or 90
seconds.
OFF
IAQ Mode Cycle
This feature will configure the fan to run
a selected number of cycles “per hour”.
This mode can be enabled or disabled
at anytime during normal operation, by
selecting IAQ mode with the fan key.
Note: IAQ mode is a programmable/selectable
mode will operate the fan 1-4 cycles per hour,
1-45 minutes per cycle. Once programmed
in tech setup, to enable this mode select IAQ
with the fan key. Or you can disable the mode
by selecting ON or AUTO with the fan key.
Select OFF, 1, 2, 3 or 4
with the + or - keys.
This sets the number
of cycles per hour that
the IAQ fan mode will
operate.
OFF
IAQ Mode Minutes
This allows you to select the minimum
number of minutes that the fan will run
“per cycle”. The thermostat will keep
track of fan run time from normal Heat
and Cool operation. If additional fan
runtime is needed the thermostat will run
the fan to satisfy the IAQ mode minutes.
Select 1, 5, 10, 15, 20,
30 or 45 minutes.
When IAQ fan mode is
enabled, it will ensure
the fan runs at least the
selected number of minutes
per IAQ mode cycle.
1

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Technician Setup Steps LCD will Show Adjustment Options Factory
Default
Settings
Satisfy Setpoint
This feature allows the thermostat to
keep multiple stages of heat or cool
energized until setpoint is satisfied.
Use the + or - key to
turn on or off.
OFF
Staging Delay
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.
Use the + or - key to
select YES, 5, 10, 15,
30, 45, 60, 90 minutes.
OFF
Humidity Pad Reminder
This will remind the user to change the
humidity pad.
Use the + or - key to
select OFF, 600, 1000,
1500, 2000. These
represent hours of heat
operation.
OFF
UV Lamp Reminder
Will remind the user to change the UV
light bulb.
Use the + or - key to
select OFF, 1 Year,
2 Year.
OFF
IAQ Cell Reminder
Will remind the user to change the PHI
Cell after 25,000 hrs.
Use the + or - key to
select OFF, 250 (stands
for 25,000 hours)
OFF
Note: Once a reminder has been turned on and set, the elapsed time can be checked by navigating to its tech setup
step. The elapsed time will then appear in the text field. It can also be reset at that time by a press and hold of the
third button from the left for three seconds. Resetting an expired reminder can be done without entering tech setup, by
a press and hold of the third button from the left for three seconds.

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Viega Multifunctional Thermostat User Guide
UG-HC 566441 1219 Multifunctional Thermostat (EN)
Programming the Schedule
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.
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.
7 Minutes are now flashing. Use the + or - key
to select current minutes.
8 Press DONE when completed.
Day
of the
Week
Factory Default Program
Events Time
Setpoint Temperature
(Heat)
Setpoint Temperature
(Cool)
Weekday Wake/OCC1 6 a.m. 70°F (21°C) 75°F (24°C)
Leave/UNOCC1 8 a.m. 62°F (17°C) 83°F (28°C)
Return/OCC2 6 p.m. 70°F (21°C) 75°F (24°C)
Sleep/UNOCC2 10 p.m. 62°F (17°C) 78°F (26°C)
Saturday Wake/OCC1 8 a.m. 70°F (21°C) 75°F (24°C)
Leave/UNOCC1 10 a.m. 62°F (17°C) 83°F (28°C)
Return/OCC2 6 p.m. 70°F (21°C) 75°F (24°C)
Sleep/UNOCC2 11 p.m. 62°F (17°C) 78°F (26°C)
Sunday Wake/OCC1 8 a.m. 70°F (21°C) 75°F (24°C)
Leave/UNOCC1 10 a.m. 62°F (17°C) 83°F (28°C)
Return/OCC2 6 p.m. 70°F (21°C) 75°F (24°C)
Sleep/UNOCC2 11 p.m. 62°F (17°C) 78°F (26°C)
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
are three time period options for each program:
■ 4 Residential (WAKE, LEAVE, RETURN,
SLEEP)
■ 2C Commercial (OCCUPIED, UNOCCUPIED)
■ 4C Commercial (OCCUPIED 1,
UNOCCUPIED 1, OCCUPIED 2,
UNOCCUPIED 2)
This thermostat has a programmable fan feature
which allows you to run the fan continuously
during any time period.

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Viega Multifunctional Thermostat User Guide
UG-HC 566441 1219 Multifunctional Thermostat (EN)
Day
of the
Week
Factory Default Program for 2 Time Periods
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)
Day
of the
Week
Programming Table
Events Time
Setpoint Temperature
(Heat)
Setpoint Temperature
(Cool)
Weekday Wake/OCC1
Leave/UNOCC1
Return/OCC2
Sleep/UNOCC2
Saturday Wake/OCC1
Leave/UNOCC1
Return/OCC2
Sleep/UNOCC2
Sunday Wake/OCC1
Leave/UNOCC1
Return/OCC2
Sleep/UNOCC2
You can use the table below to plan your customized program schedule if using 5+1+1.

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Viega Multifunctional Thermostat User Guide
UG-HC 566441 1219 Multifunctional Thermostat (EN)
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.
4 Time is flashing. Use the + or - key to make
your time selection for the Monday WAKE/
OCC1 time period.
5 Press NEXT.
6 The setpoint temperature is flashing. Use the
+ or - key to make your setpoint selection for
the Monday WAKE/OCC1 period.
7 Press NEXT.
8 Repeat steps 4 thru 7 for Monday LEAVE/
UNOCC1 time period, for Monday RETURN/
OCC2 time period, and for Monday SLEEP/
UNOCC2 time period.
Tuesday, Wednesday, Thursday,
Friday, Saturday, Sunday
9 Repeat steps 4 through 8 for the remaining
days of the week.
Monday is displayed and the WAKE/
OCC1 icon is shown. You are now
programming the WAKE/OCC1 time
period for the Monday setting.
If you want the fan to run continuously
during this time period, select ON with
the FAN key. If you want to use IAQ
mode during this time period, select IAQ with
the fan key.
Set Program Schedule for Four
Time Periods
(Wake, Leave, Return, Sleep or Occupied 1,
Unoccupied 1, Occupied 2, Unoccupied 2)
To customize your 5+1+1 program schedule,
follow these steps:
Weekday
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.
4 Time is flashing. Use the + or - key to make
your time selection for the weekday WAKE/
OCC1 time period.
5 Press NEXT.
6 The setpoint temperature is flashing. Use the
+ or - key to make your setpoint selection for
the weekday WAKE/OCC1 period.
7 Press NEXT.
8 Repeat steps 4 through 7 for weekday
LEAVE/UNOCC1 time period, for weekday
RETURN/OCC2 time period, and for weekday
SLEEP/UNOCC2 time period.
Saturday
9 Repeat steps 4 through 7 for Saturday
WAKE/OCC1 time period, for Saturday
LEAVE/UNOCC1 time period, for Saturday
RETURN/OCC2 time period, and for Saturday
SLEEP/UNOCC2 time period.
Sunday
10 Repeat steps 4 through 7 for Sunday WAKE/
OCC1 time period, for Saturday LEAVE/
UNOCC1 time period, for Sunday RETURN/
OCC2 time period, and for Saturday SLEEP/
UNOCC2 time period.
Monday-Friday is displayed and the
WAKE/OCC1 icon is shown. You are
now programming the WAKE/OCC1
time period for the weekday setting.
If you want the fan to run continuously
during this time period, select ON with
the FAN key. If you want to use IAQ
mode during this time period, select IAQ with
the fan key.

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Viega Multifunctional Thermostat User Guide
UG-HC 566441 1219 Multifunctional Thermostat (EN)
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.
4 Time is flashing. Use the + or - key to make
your time selection for the Monday time
period.
5 Press NEXT.
6 The setpoint temperature is flashing. Use the
+ or - key to make your setpoint selection for
the Monday OCCUPIED period.
7 Press NEXT.
8 Repeat steps 4 through 7 for Monday
UNOCCUPIED time period.
Tuesday, Wednesday, Thursday,
Friday, Saturday, Sunday:
9 Repeat steps 4 through 8 for the remaining
days of the week.
Set Program Schedule for Two
Time Periods
(OCCUPIED, UNOCCUPIED)
To customize your 5+1+1 program schedule,
follow these steps:
Weekday
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.
4 Time is flashing. Use the + or - key to
make your time selection for the weekday
OCCUPIED time period.
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.
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.
Monday-Friday is displayed and the
OCCUPIED text is shown. You are
now programming the OCCUPIED
time period for the weekday setting.
If you want the fan to run continuously
during this time period, select ON with
the FAN key. If you want to use IAQ
mode during this time period, select IAQ with
the fan key.
Monday is displayed and the
OCCUPIED text is shown. You are
now programming the OCCUPIED
time period for the weekday setting.
If you want the fan to run continuously
during this time period, select ON with
the FAN key. If you want to use IAQ
mode during this time period, select IAQ with
the fan key.

Viega LLC
585 Interlocken Blvd.
Broomfield, CO 80021
Phone [phone]
www.viega.us
Viega Multifunctional Thermostat User Guide
UG-HC 566441 1219 Multifunctional Thermostat (EN)
Temporary and Permanent Hold
Feature
Temporary Hold: The thermostat will display
HOLD and RUN SCHED on the bottom of your
screen when you press the + or - key. If you
do nothing, the temperature will remain at this
setpoint temporarily for four hours. Your program
setpoint will then replace your temporary setpoint.
Permanent Hold: If you press HOLD key at the
bottom of our 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 program: Press the RUN SCHED
key at the bottom of your screen to exit either
temporary or permanent hold.
Filter Change and Other Reminders
If your installing contractor has con󶈵gured the
thermostat to remind you when the air 󶈵lter
needs changed, you will see FILT in the display
when your air 󶈵lter needs changed. FILT will be
shown in the display after your system has run
long enough to require an air 󶈵lter change.
Resetting the 󶈵lter change reminder: When
FILT reminder is displayed, you should change
your air 󶈵lter and reset the reminder by holding
down the third button from the left side of the
thermostat for three seconds.
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.
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. If using IAQ Mode,
set fan to IAQ for any time period desired.
This thermostat also has other maintenance
reminders (Humidity Pad, UV Lamp and IAQ
Cell), that are reset with the same procedure.