Tekmar 256 Boiler Control Instrukcja Użytkownika

The Boiler Control 256 is designed to control a single stage heat source in order to provide outdoor reset. The control has a Liquid Crystal Display (

Note: The temperature sensor (thermistor) is built into the enclosure.Remove the screw and pull the front cover off the sensor enclosure.The sensor ca

Mounting the Universal Sensor Note: This sensor is designed to mount on a pipe or in a temperature immersion well.The Universal Sensor should be place

STEP FOUR TESTING THE WIRING No wires should be connected to the control during the testing.The following tests are to be performed using standard t

Test The Power Supply Make sure exposed wires and bare terminals are not in contact with other wires or grounded surfaces. Turn on the power and mea

The installer should test to confi rm that no voltage is present at any of the wires. Powered Input Connections 24 V (ac) PowerConnect the 24 V (ac) p

Press and release the Item button to advance to the units adjustment. Use the or button to set the scale to °F or °C.To exit the ADJUST menu, press

Current outdoor air temperature as measured by the outdoorsensor. This is also the default display for the control. SectionAdvancedInstallerDisplay De

The minimum temperature allowed for the boiler target temperature.OFF, 80 to 180°F(OFF, 27 to 82°C) B3The differential that the control is to use when

The Boiler Control 256 has a built-in test routine which is used to test the boiler function. The 256 continually monitors the sensors, and displays a

The control was unable to read a piece of information from its EEPROM. This error can be caused by a noisy power source. The control will load the fac

This brochure is organized into four main sections. They are: 1) Sequence of Operation, 2) Installation, 3) Control Settings, and 4) Troubleshooting.

Limited Warranty The liability of tekmar under this warranty is limited. The Purchaser, by taking receipt of any tekmar product (“Product”), acknowl-e

3 of 20 © 2011 D 256 - 07/11ItemNumber FieldDisplays the current valueof the selected item{ButtonsSelects Menus, Items andadjusts settingsMenu F

POWERING UP THE CONTROL When the Boiler Control 256 is powered up, the control displays the control type number in the LCD for 2 seconds. Next, the s

Section B1GeneralSection B2InstallerSection B3AdvancedBOILER DEMAND A boiler demand is required in order for the 256 to provide heat to the heating s

ROOM OCC & UNOCC (ROOM) The ROOM is the desired room temperature for the boiler zones, and it provides a parallel shift of the Characterized Heat

Radiator (5) A radiator terminal unit has a large heated surface that is exposed to the room. A radiator provides heat to the room through radiant h

BOILER DIFFERENTIAL (BOIL DIFF) An on / off heat source such as a boiler, must be operated with a differential in order to prevent short cycling. Wit

Enclosure C --------------------------------------------------------Enclosure C is designed for smaller controls and their wiring. This enclosure has