Copyright © D 261 - 03/091 of 20- Data BrochureBoiler Control 261D 26103/09The Boiler Control 261 is designed to control two separate on / off boiler
Copyright © D 261 - 03/09 10 of 20Setpoint DemandTo generate a setpoint demand, a voltage between 24 V (ac) and 240 V (ac) must beapplied across the S
Copyright © D 261 - 03/0911 of 20Unoccupied SwitchIf an external timer (tekmar Timer 032) or switch is used, connect the two wires fromthe external sw
Copyright © D 261 - 03/09 12 of 20Test The Outputs Boiler Pump (Boil Pmp)If the boiler pump is connected to the Boil Pmp terminal (7), makesure power
Copyright © D 261 - 03/0913 of 20Quick SetupTo enter the installer programming mode, set the Advanced / Installer DIP switch to Installer.Access the A
Copyright © D 261 - 03/09 14 of 20View Menu (1 of 1)Adjust Menu (1 of 2)Current outdoor air temperature as measured by the outdoorsensor. This is also
Copyright © D 261 - 03/0915 of 20Adjust Menu (2 of 2)The time delay the control can expect between thetime the boiler contact closes, and the burner f
Copyright © D 261 - 03/09 16 of 20Testing the ControlThe Boiler Control 261 has a built-in test routine which is used to test themain control function
Copyright © D 261 - 03/0917 of 20TroubleshootingWhen troubleshooting any heating system, it is always a good idea to establish a set routine to follow
Copyright © D 261 - 03/09 18 of 20Error MessagesThe control was unable to read a piece of information from its EEPROM. This error can be caused by ano
Copyright © D 261 - 03/0919 of 20Notes
Copyright © D 261 - 03/09 2 of 20How To Use The Data BrochureThis brochure is organized into four main sections. They are: 1) Sequence of Operation, 2
Limited Warranty The liability of tekmar Control Systems Ltd. and tekmarControl Systems, Inc. (“tekmar”) under this warranty is limited. The purchaser
Copyright © D 261 - 03/093 of 20DisplaySymbol DescriptionSetpoint DemandItemNumber FieldDisplays the current valueof the selected item{ButtonsSelects
Copyright © D 261 - 03/09 4 of 20Sequence of OperationSection AGeneral OperationPage 4Section BBoiler ResetPage 5-8Section CSetpointPage 8Section A —
Copyright © D 261 - 03/095 of 20Section B: Boiler ResetSection B1GeneralSection B2InstallerSection B3AdvancedSection B1: GeneralBOILER DEMAND A boiler
Copyright © D 261 - 03/09 6 of 20Section B2: InstallerOUTDOOR DESIGN (OUTDR DSGN) The OUTDR DSGN is the outdoor air temperature that is the typicalcol
Copyright © D 261 - 03/097 of 20Fancoil (3) A fancoil terminal unit or air handling unit (AHU) consists of a hydronic heating coil andeither a fan or
Copyright © D 261 - 03/09 8 of 20FIRE DELAY (Fire Delay) The Fire Delay is the delay time that may occur between the time thatthe 261 closes a stage c
Copyright © D 261 - 03/099 of 20InstallationCAUTIONImproper installation and operation of this control could result in damage to the equipment and pos
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