Tekmar 423 Universal Reset Module User Manual

D 42308/07- Data BrochureUniversal Reset Module 4231 of 36 © 2007 D 423 - 08/07• • tN4 Compatible • • Four tN4 Buses• • Up to One Boiler and Three

© 2007 D 423 - 08/07 10 of 36Item FieldRangeAccess Description30 to 230 secondsDefault = 105AdMIX 2 MOTOR SECTION GThe time that the Mix 2 actuating m

11 of 36 © 2007 D 423 - 08/07Item FieldRangeAccess DescriptionAu (Auto)OFFDefault = AuInSAdBOILER 2 SECTION CSelects whether Boiler 2 is operational o

© 2007 D 423 - 08/07 12 of 36ADJUST MENUItem FieldRangeAccess Description0:00 to 3:00 minDefault = 0:10 minAdBOILER FIRE DELAY SECTION CThe time delay

13 of 36 © 2007 D 423 - 08/07Item FieldRangeAccess DescriptionOFF, 70 to 190°F(OFF, 21.0 to 87.5°C)Default = OFFAdDHW (UnOccupied) SECTION HThe temper

© 2007 D 423 - 08/07 14 of 36Adjust Menu (7 of 7)ADJUST MENUItem FieldRangeAccess DescriptionOFF, OnDefault = OFFAdSETPOINT (UnOccupied) SECTION JSele

15 of 36 © 2007 D 423 - 08/07Item Field Range Access DescriptionInS (Installer)Ad (Advanced)InSAdACCESS LEVEL The access level of the control. The acc

© 2007 D 423 - 08/07 16 of 36Testing the ControlTe stPress and Hold for 1 secondThe control has a built-in test routine that tests the main control fu

17 of 36 © 2007 D 423 - 08/07Te stPress and Hold for 3 secondsTe stPress and Hold for 6 secondsMax HeatThe control has a function called Max Heat. In

© 2007 D 423 - 08/07 18 of 36tekmarNet®4 Communication Section AOutdoor Reset Section BSequence of OperationZone A1Zone A2PowerZone Group Pump AZone

19 of 36 © 2007 D 423 - 08/07Terminal UnitThere is a terminal unit setting for each tN4 bus. The Terminal Unit setting is found in the Adjust Menu.Hyd

© 2007 D 423 - 08/07 2 of 36Table of ContentsTable of Contents ...2Display and DIP Switches .

© 2007 D 423 - 08/07 20 of 36Mix Characterized Heating CurveTerminal UnitMix DesignOutdoor DesignMix IndoorDecreasing Outdoor Temperatures Increasing

21 of 36 © 2007 D 423 - 08/07Boiler Temperature Control Section CThe 423 is able to operate up to two on-off or modulating boiler as a heat source. F

© 2007 D 423 - 08/07 22 of 36Boiler Fire DelayThe Boiler Fire Delay is the time delay that occurs between the time that the control closes the boiler

23 of 36 © 2007 D 423 - 08/07Boiler Motor SpeedThe Boiler Motor Speed is the amount of time the boiler requires to go from 0% modulation to 100% modul

© 2007 D 423 - 08/07 24 of 36Boiler Enable and Setpoint Enable Section EIf the 423 is one of many controls that can call for heat to a single boiler

25 of 36 © 2007 D 423 - 08/07Floating ActionThe control pulses the actuator motor open or close to maintain the correct supply water temperature at th

© 2007 D 423 - 08/07 26 of 36DHW During UnOccupiedWhen using a Powered DHW Demand, the control has a DHW Exchange UnOccupied setting that allows the i

27 of 36 © 2007 D 423 - 08/07DHWPumpPrimaryPumpOFFDHW Priority Override TimeIncreasing Time Decreasing Outdoor Air Temperature DHW Priority OverrideDH

© 2007 D 423 - 08/07 28 of 36PrimaryPumpSetpointMode = 3SetpointPrimaryPumpOFFMode = 4SetpointPrimaryPumpOFFMode = 2PrimaryPumpSetpointMode = 1Setpoin

29 of 36 © 2007 D 423 - 08/07Setpoint Priority OverrideSetpoint Priority Override applies to SETPOINT MODE 2 and MODE 4. To prevent the building from

3 of 36 © 2007 D 423 - 08/07Access LevelBoiler Sup / RetUse the Boiler Sensor Supply / Return DIP switch to select the location of the boiler sensor.•

© 2007 D 423 - 08/07 30 of 36Error MessagesLocal Errors and Device ErrorsError messages are used to indicate a problem somewhere in the system. There

31 of 36 © 2007 D 423 - 08/07Error Message DescriptionADJUST ERRORThe control failed to read the Adjust Menu settings, and reloaded the factory defaul

© 2007 D 423 - 08/07 32 of 36Error Message DescriptionBUS 2 DEVICE LOSTCommunication is lost to a tN4 device on Bus 2. The number shown is the address

33 of 36 © 2007 D 423 - 08/07Error Message DescriptionMIXING EXPANSION MODULE CONFLICTA Mixing Expansion Module is connected to the Boiler bus. The Mi

© 2007 D 423 - 08/07 34 of 36Error Messages (4 of 5) Error Message DescriptionBOILER SENSOR OPEN CIRCUITDue to an open circuit, the control failed to

35 of 36 © 2007 D 423 - 08/07Error Messages (5 of 5) Error Message Descriptiontekmar STAGER SETTING CONFLICTThere is a DIP switch settings conflict. T

tekmar Control Systems Ltd., Canadatekmar Control Systems, Inc., U.S.A.Head Office: 5100 Silver Star RoadVernon, B.C. Canada V1B 3K4(250) 545-7749 Fa

© 2007 D 423 - 08/07 4 of 36PUMPDisplays when the primary pump is in operation.BURNERDisplays when the Stage 1 or Stage 2 contacts are closed.LOCKDisp

5 of 36 © 2007 D 423 - 08/07User InterfaceContinueto next ItemBack to View MenuContinueto next ItemContinueto next ItemUse the User Interface availabl

© 2007 D 423 - 08/07 6 of 36View Menu (1 of 2)Item Field Range Access Description-67 to 149°F(-55.0 to 65.0°C)InSAdOUTDOOR SECTION BCurrent outdoor a

7 of 36 © 2007 D 423 - 08/07VIEW MENUItem Field Range Access Description-31 to 266°F(-35.0 to 130.0°C)InSAdBOILER SUPPLY SECTION BCurrent boiler suppl

© 2007 D 423 - 08/07 8 of 36Item FieldRangeAccess Descriptionboil, M1 (Mix 1), OFFDefault = boilAdBUS 1 SECTION CSelect the water temperature for tN4

9 of 36 © 2007 D 423 - 08/07Item FieldRangeAccess DescriptionOFF, 40 to 150°F(OFF, 4.5 to 65.5°C)Default = OFFAdMIX 1 MINIMUM SECTION GThe minimum all