- Data BrochureBoiler Control 263D 26303/09 1 of 36 © 2009 D 263 - 03/09The tekmar Boiler Control 263 can control the supply water temperat
© 2009 D 263 - 03/09 10 of 36 DIFFERENTIALA modulating boiler must be operated with a differential while operating in low fire. The boiler d
11 of 36 © 2009 D 263 - 03/09Section C1: Pump OperationSection C: Pump OperationSection C1PumpOperationPRIMARY PUMP OPERATIONThe primary
© 2009 D 263 - 03/09 12 of 36 Section D1BoilerResetSection D: Boiler Reset OperationSection D1: Boiler Reset OperationBOILER DEMANDA boiler
13 of 36 © 2009 D 263 - 03/09TERMINAL UNITSThe control provides for a selection between six different terminal unit types: two types of r
© 2009 D 263 - 03/09 14 of 36 Typical settings for the boost function vary between 30 minutes and two hours for buildings that have a fast r
15 of 36 © 2009 D 263 - 03/09DHW MODE AND PRIORITY OPERATIONThe control has four different modes of DHW operation, which depends on the p
© 2009 D 263 - 03/09 16 of 36 CONDITIONAL DHW PRIORITYThe Conditional DHW Priority Override applies to DHW MODE 2 and 4. If the boiler suppl
17 of 36 © 2009 D 263 - 03/09Section F1: SetpointSection F1SetpointOperationSection F: Setpoint OperationFor correct operation, close att
© 2009 D 263 - 03/09 18 of 36 SETPOINT PRIORITY OVERRIDEThe setpoint has a Priority Override while in SETP MODE 2. In order to prevent the b
19 of 36 © 2009 D 263 - 03/09STEP FOUR ELECTRICAL CONNECTIONS TO THE CONTROLGeneralThe installer should test to confirm that no voltage
© 2009 D 263 - 03/09 2 of 36 How To Use The Data BrochureUser InterfaceTable of ContentsDIP Switch Settings ...
© 2009 D 263 - 03/09 20 of 36 Relay 1 ContactMode 1 - Two ON / OFF StagesThe Relay 1 terminals (11 and 12) are isolated outputs in the cont
21 of 36 © 2009 D 263 - 03/09The 0 to 20 mA output can be converted to 0 to 10 V (dc) using an external 500 Ω resistor across the Modulat
© 2009 D 263 - 03/09 22 of 36 UnOccupied SwitchIf an external timer (tekmar Timer 032) or switch is used, connect the two wires from the ext
23 of 36 © 2009 D 263 - 03/09Setpoint DemandIf a setpoint demand is used, measure the voltage between the Setp Dem and the Com Dem termin
© 2009 D 263 - 03/09 24 of 36 DHW Pump Or Valve (DHW Pmp / Vlv)If a DHW pump or DHW valve is connected to the DHW Pmp / Vlv terminals (9 and
25 of 36 © 2009 D 263 - 03/09DIP Switch SettingsGENERALThe DIP switch settings on the control are very important and should be set to the
© 2009 D 263 - 03/09 26 of 36 View Menu (1 of 1)Outdoor Current outdoor air temperature as measured by the outdoor sensor.-76 to 149°F(-60 t
27 of 36 © 2009 D 263 - 03/09Adjust Menu (1 of 3)AMode Selects the control mode of operation.1 (2 on / off)2 (1 mod & pump)Default =
© 2009 D 263 - 03/09 28 of 36 Adjust Menu (2 of 3)DisplayDescriptionRangeSectionInstallerAdvancedActualSettingB2B3Boiler Differential The te
29 of 36 © 2009 D 263 - 03/09Adjust Menu (3 of 3)DHW Exchange Unoccupied Selects whether or not a DHW d e m a n d w ill b e r e s po n d
3 of 36 © 2009 D 263 - 03/09DisplaySymbol DescriptionBoiler DemandDHW DemandSetpoint DemandModulationPriority OverrideMenu FieldDisplays thecu
© 2009 D 263 - 03/09 30 of 36 SETTING THE TIMEStep OnePress and release the Menu button until the TIME menu is reached.Step TwoPress the Ite
31 of 36 © 2009 D 263 - 03/09Schedule Menu (1 of 1)SETTING THE SCHEDULEA schedule allows the timer to automatically change between two pr
© 2009 D 263 - 03/09 32 of 36 The control has a built-in test routine that is used to test the main control functions. The control continual
33 of 36 © 2009 D 263 - 03/09MAX HEATThe control has a function called Max Heat. In this mode, the control turns on and operates the syst
© 2009 D 263 - 03/09 34 of 36 Error Messages (2 of 2)The control is no longer able to read the boiler supply sensor due to an open circuit.
35 of 36 © 2009 D 263 - 03/09Notes
Technical Data 36 of 36Product design, software and literature are Copyright © 2009 by:tekmar Control Systems Ltd. and tekmar Control Systems, Inc.Al
© 2009 D 263 - 03/09 4 of 36 Section AGeneralOperationPage 4 - 5Section BBoilerOperationPage 6 - 10Section CPumpOperation Page 11Sequence of Oper
5 of 36 © 2009 D 263 - 03/09TYPES OF DEMANDSThe control stages or modulates the boiler(s) to control supply water temperature to a hydronic sy
© 2009 D 263 - 03/09 6 of 36 Section B: Boiler OperationSection B1BoilerOperationSection B2Mode 1Two StageOperationSection B3Mode 2Modulating Boi
7 of 36 © 2009 D 263 - 03/09ROTATIONThe control’s Equal Run Time Rotation function is fixed at 48 hours. The firing order of the boilers chang
© 2009 D 263 - 03/09 8 of 36 Auto DifferentialIf the Auto Differential is selected, the control automatically determines the best differential as
9 of 36 © 2009 D 263 - 03/09Example 1:A boiler requires a 1.8 V (dc) signal to fire the boiler at low fire. The boiler can be modulated to 10
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