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User Guide
Viega Multifunctional Heat/Cool
Thermostat
Part Number 15118
This document is subject to updates.
For the most current Viega technical
literature please visit www.viega.us.
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.
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.
UG-HC 566441 1219 Multifunctional Thermostat (EN)
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 floor. Select an area with
average temperature and good air circulation.
No
No
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
Pick an installation location that is
easy for the user to access. The
temperature of the location should be
representative of the building
No
Yes
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Summary of Contents for Viega 15118
-
Page 1: User Guide
4 to 5 feet above the floor. Select an area with This document is subject to updates. average temperature and good air circulation. For the most current Viega technical literature please visit www.viega.us. Viega products are designed to be installed by licensed and trained... -
Page 2: Mounting The Subbase
Viega Multifunctional Thermostat User Guide 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 fit between the thermostat and the subbase: ■... -
Page 3: Battery Installation
Viega Multifunctional Thermostat User Guide Battery Installation Thermostat Wiring Battery installation is recommended even if ■ If you are replacing a thermostat, make note thermostat is hardwired (C terminal connected). of the terminal connections on the thermostat When thermostat is hardwired and batteries that is being replaced. -
Page 4: Terminal Designations
Viega Multifunctional Thermostat User Guide Terminal Designations Terminal 2 Heat 2 Cool 2 Heat 2 Cool 3 Heat 2 Cool Conventional System Heat Pump System Heat Pump System Transformer power Transformer power Transformer power (cooling) (cooling) (cooling) Transformer power Transformer power... - Page 5 Viega Multifunctional Thermostat User Guide Typical Industry Wiring Diagrams Power supply Optional 24 VAC common connection when thermostat is used in battery power mode Factory-installed jumper. Remove only In many heat pump systems with no when installing on 2-transformer systems emergency heat relay a jumper can be installed between E and W2.
- Page 6 Viega Multifunctional Thermostat User Guide Viega Wiring Diagrams Connecting Viega Thermostats and Zone Valves to the Viega Zone Control Thermostat 15116 Thermostat 15117 Thermostat 15118 Thermostat 18050 120 V AC Zone 4 Priority Power Supply Zone 1 Zone 2 Zone 3...
- Page 7 Viega Multifunctional Thermostat User Guide Viega Wiring Diagrams Connecting Viega Thermostats to the Viega Zone Control Thermostat 15118 Thermostat 15116 Thermostat 15117 Thermostat 18050 Zone Control (18060, 18062) Powerhead with Optional Priority (15064) 4 Wire, 24 V, For use with...
- Page 8 Viega Multifunctional Thermostat User Guide Connecting Viega Thermostats Connecting Viega Thermostats to 2-Wire Powerheads to 4-Wire Powerheads Thermostat -15118 Thermostat -15118 Viega Viega Viega Black Yellow White Yellow 120 V AC 120 V AC Power Supply Class II Power Supply...
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Page 9: Thermostat Display
Viega Multifunctional Thermostat User Guide Thermostat Display LCD Display Glow in the dark light button Set point buttons Program buttons Menu button Fan button System button Button/battery access door Battery cover 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. -
Page 10: Programming The Thermostat
Viega Multifunctional Thermostat User Guide Programming the Thermostat Configure the installer options as desired This thermostat has a technician setup menu using the table below. for easy installer configuration. To setup the Use the + or - keys to change settings and... - Page 11 Viega Multifunctional Thermostat User Guide Technician Setup Steps LCD will Show Adjustment Options Factory Default Settings Cooling Swing The cooling swing 0.5°F The swing setting, often called “cycle setting is adjustable rate”, “differential” or “anticipation” from ±0.2°F to ± 2°F.
- Page 12 Viega Multifunctional Thermostat User Guide Technician Setup Steps LCD will Show Adjustment Options Factory Default Settings °F or °C °F for Fahrenheit °F This feature allows you to display °C for Celsius temperatures in either Fahrenheit or Celsius. 12 or 24 Hour Clock...
- Page 13 Viega Multifunctional Thermostat User Guide Technician Setup Steps LCD will Show Adjustment Options Factory Default Settings Display Light Use the + or - key to The display light can be configured to turn on or off. stay on at all times or come on when OFF configures display any key is pressed.
- Page 14 Viega Multifunctional Thermostat User Guide Technician Setup Steps LCD will Show Adjustment Options Factory Default Settings Gas Auxiliary for Heat Pump For heat pump systems This option will turn the heat pump that are “dual fuel” off 45 seconds after the auxiliary heat (use a gas furnace for relay turns on.
- Page 15 Viega Multifunctional Thermostat User Guide Technician Setup Steps LCD will Show Adjustment Options Factory Default Settings Satisfy Setpoint Use the + or - key to This feature allows the thermostat to turn on or off. keep multiple stages of heat or cool energized until setpoint is satisfied.
- Page 16 Viega Multifunctional Thermostat User Guide Programming the Schedule All our programmable thermostats are shipped with an energy saving pre-program. You can Set Time customize this default program by following the Follow the steps below to set the day of the Set Program Schedule.
- Page 17 Viega Multifunctional Thermostat User Guide Factory Default Program for 2 Time Periods of the Setpoint Temperature Setpoint Temperature Week Events Time (Heat) (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.
- Page 18 Viega Multifunctional Thermostat User Guide Set Program Schedule for Four To customize your 7 day program schedule, Time Periods follow these steps: Monday (Wake, Leave, Return, Sleep or Occupied 1, Unoccupied 1, Occupied 2, Unoccupied 2) Select HEAT or COOL using the SYSTEM To customize your 5+1+1 program schedule, key.
- Page 19 Viega Multifunctional Thermostat User Guide Set Program Schedule for Two To customize your 7 day program schedule, Time Periods follow these steps: Monday (OCCUPIED, UNOCCUPIED) To customize your 5+1+1 program schedule, Select HEAT or COOL using the SYSTEM follow these steps: key.
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Page 20: Auto Changeover
Viega Multifunctional Thermostat User Guide Auto Changeover Temporary and Permanent Hold Feature 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 Temporary Hold: The thermostat will display has reached its setpoint.
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