tekmar 263 Boiler Control - Manual (Page 33)

33 of 36 © 2009 D 263 - 03/09
MAX HEAT
The control has a function called Max Heat. In this mode, the control turns on and operates the system up to the maximum set
temperatures as long as there is a demand for heat. The control continues to operate in this mode for up to 24 hours or until the
Item, Menu or Test button is pressed. This mode may be used for running all circulators during system start-up in order to purge
air from the piping. To enable the Max Heat feature, use the following procedure.
1) Press and hold the Test button for more than 3 seconds. At this point, the control flashes
the MAX segment and displays the word OFF
2) Using the ▲ or ▼ buttons, select the word On. After 3 seconds, the control turns on all
outputs. However, the max heat mode is still limited by the BOIL MAX setting.
3) To cancel the Max Heat mode, press the Item, Menu, or Test button.
4) Once the Max Heat mode has either ended or is cancelled, the control resumes
normal operation.
Menu Item
Menu Item
Error Messages (1 of 2)
The control was unable to read a piece of information stored in its memory. Because of this, the control
was required to reload the factory settings into all of the items in the ADJUST menu. The control will
stop operation until all of the items in the ADJUST menu of the control have been checked by the user
or installer.
Note: The Advanced / Installer DIP switch must be set to Advanced in order to clear the error.
The control is no longer able to read the outdoor sensor due to a short circuit. In this case the control
assumes an outdoor temperature of 32°F (0°C) and continues operation. Locate and repair the problem
as described in the Data Brochure D 070. To clear the error message from the control after the sensor
has been repaired, press either the Menu or Item button.
The control is no longer able to read the outdoor sensor due to an open circuit. In this case the control
assumes an outdoor temperature of 32°F (0°C) and continues operation. Locate and repair the problem
as described in the Data Brochure D 070. To clear the error message from the control after the sensor
has been repaired, press either the Menu or Item button.
The control is no longer able to read the boiler supply sensor due to a short circuit. The control will not
operate the boiler(s) until the sensor is repaired. Locate and repair the problem as described in the Data
Brochure D 070. To clear the error message from the control after the sensor has been repaired, press
either the Menu or Item button.