System Inputs Screen; System Outputs Screen - Watts tekmar 289 Installation, Operation And Maintenance Manual

System Inputs Screen

Heating Calls
• The Room Target displays the desired room temperature
when an indoor sensor is available .
• Early Start is in effect when the dot is green . This is available
when an indoor sensor is available .
• Boost is in effect when the dot is green . This is available
when there is no indoor sensor .
• Smart Setback is in effect when the dot is green .
• Domestic Hot Water dot is green when there is a DHW
heating call .
Sensors
• The outdoor temperature is used to calculate the heat on
time of the steam boiler using outdoor air reset .
• The optional condensate return temperature is used to
determine when steam is established at the furthest radiator .
• The optional indoor temperature is used to provide
indoor temperature feedback for the heat on time .
• The optional pressure sensor is used for monitoring and
operating the second stage boiler .

System Outputs Screen

• When an output is turned on (relay closed), the dot
is green .
• When an output is turned off (relay open), the dot
is gray .
• When Warm Weather Shut Down (WWSD) is in effect,
the dot is green .
• Manual override are displayed . In normal operation the
override will display "AUTO" .
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