tekmar 161 Setpoint Control Installation - Manual (Page 25)

25 of 32 © 2007 D 161 - 08/07
Restore Factory Defaults SECTION I
To restore the factory defaults, locate the Default item in the Miscellaneous menu
and press and hold the Up and Down buttons for 1 second. The display will show
“SELECT” and when completed it will show “DONE”.
The setpoint control can display temperatures in either Fahrenheit (°F) or in
Celsius (°C).
•
• Locate the units setting in the Miscellaneous menu.
Use the setpoint control’s backlight to increase the visibility of the display. The
backlight can be set to On, Temporary, or Off. If Temporary is selected, the back-
light comes on for 30 seconds when a button is pressed. By default, the backlight
is Temporary. If Off is selected the backlight remains permanently off.
•
• Locate the Backlite setting in the Miscellaneous menu.
When the setpoint control is connected to a tN4 system, the setpoint control has
additional features not present when operating alone.
tN4 Bus
When connecting the setpoint control to a tN4 system, there may be several tN4
buses available. The setpoint control should be connected to the tN4 bus that best
represents the water temperature required for the setpoint load. Typically, the setpoint
control should be connected to the boiler tN4 bus for Application Modes 2 (Hot Tub)
and 3 (DHW Tank). Typically the setpoint control should be connected to a mix tN4
bus for Application Mode 4 (Floor).
Heat Source
When the setpoint control is part of a tN4 system, the Heat Source item in the Adjust
menu allows the setpoint control to inform the tN4 system control whether the heat
is hydronic (HYDr) or provided by another (OTHr) heat source.
Exchange Supply
When the setpoint control is connected to a tN4 system control and Heat Source item
is set to hydronic (HYDr), the setpoint control requests that the Exchange Supply
Occupied water temperature be maintained on the tN4 bus whenever Relay 1 is
heating the load.
Temperature Units SECTION J
Backlight SECTION K
tN4 Features SECTION L