Tekmar 262 Boiler Control Installation Manual de usuario Pagina 1

1 of 36Copyright © D 262 -12/08D 26212/08Boiler Control 262- Data BrochureThe Boiler Control 262 is a micro processor based control designed to maximi

10 of 36Copyright © D 262 -12/082) as described in Section B1. With the RTU connected, the 262 measures the actual ROOM temperature. Indoor temperatu

11 of 36Copyright © D 262 -12/08Sequence, Section C2Internal Demand (DHW SENS = DHW) If the control receives a DHW demand from a DHW sensor attached t

12 of 36Copyright © D 262 -12/08Section C3 —DHW with Low Temperature Boilers (Mode = —1—)If DHW is to be incorporated into a low temperature system su

13 of 36Copyright © D 262 -12/08Section D1—General Setpoint Operation (Mode = —1—)The 262 can handle setpoint loads which are high temperature loads c

14 of 36Copyright © D 262 -12/08InstallationCAUTIONImproper installation and operation of this control could result in damage to the equipment and pos

15 of 36Copyright © D 262 -12/08Boiler DemandTo generate a Boiler Demand, a voltage between 24 V (ac) and 240 V (ac) must beapplied across the Boiler

16 of 36Copyright © D 262 -12/08DHW SensorConnect the two wires from the DHW Sensor 071 to the Com and DHWterminals (19 and 20). The DHW Sensor is use

17 of 36Copyright © D 262 -12/08Test the Power Supply Make sure exposed wires and bare terminals are not in contact with otherwires or grounded surfac

18 of 36Copyright © D 262 -12/08Connecting the Control Make sure all power to the devices and terminal blocks is off and remove anyremaining jumpers f

19 of 36Copyright © D 262 -12/08Access LevelsThe tekmar Boiler Control 262 comes with four Access Level settings.These Access Levels restrict the numb

2 of 36Copyright © D 262 -12/08How To Use The Data BrochureThis brochure is organized into four main sections. They are: 1) Sequence of Operation, 2)

20 of 36Copyright © D 262 -12/08Minimum boiler supply temperature during a setpointdemand.MODE = —1—262 View Menu (1 of 1)-31 to 266˚F(-35 to 130˚C)-

21 of 36Copyright © D 262 -12/08 Section• • • •• • •• • •• •• ••• •• •262 Adjust Menu (1 of 4)The desired room air temperature during anOccupied perio

22 of 36Copyright © D 262 -12/08 Section262 Adjust Menu (2 of 4)• •The design supply water temperature used in theheat loss calculations for the heati

23 of 36Copyright © D 262 -12/08 Section262 Adjust Menu (3 of 4)• • •• • •The DHW storage tank’s temperature during theOccupied period.DHW SENS = DHWD

24 of 36Copyright © D 262 -12/08 Section• • • •The type of setback override that is in effect.DIP switch = SetbackAWAY is available even if DIP ≠ Setb

25 of 36Copyright © D 262 -12/08ItemMenuUnOcc 1°FViewHeatRoom Temperature Units (RTUs) 062 and 063A single RTU may be connected to the Boiler Control

26 of 36Copyright © D 262 -12/08262 RTU Monitor Menu (1 of 1)The highest outdoor air temperature recorded since thisitem was last cleared.To clear, pr

27 of 36Copyright © D 262 -12/08Testing the ControlThe Boiler Control 262 has a built in test routine which is used to test the main control functions

28 of 36Copyright © D 262 -12/08TroubleshootingWhen troubleshooting any heating system, it is always a good idea to establish a set routine to follow.

29 of 36Copyright © D 262 -12/08Sketch the piping of the system. This is a relatively simple step that tends to be overlooked,however it can often sav

3 of 36Copyright © D 262 -12/08ecafretnI resUSymbol DescriptionDisplayBoiler DemandDHW DemandSetpoint DemandWWSDMinimumMaximumMenuItemNumber FieldDisp

30 of 36Copyright © D 262 -12/08262 Monitor Menu (2 of 3)The total number of Boiler Pump (P1) running hours sincethis item was last cleared.The highes

31 of 36Copyright © D 262 -12/08262 Error Messages (1 of 4)Error Displayed Description of ErrorThe control was unable to store a piece of information

32 of 36Copyright © D 262 -12/08rorrE fo noitpircseDdeyalpsiD rorrE262 Error Messages (2 of 4)The control was unable to read a piece of information st

33 of 36Copyright © D 262 -12/08The control is no longer able to read the Outdoor sensor due to an open circuit. In this case the controlassumes an ou

34 of 36Copyright © D 262 -12/08The Remote Sensor 3 attached to the RTU is being read as an open circuit. The RTU will continueoperation using all rem

35 of 36Copyright © D 262 -12/08Notes

Technical DataThe installer must ensure that this control and its wiring are isolated and/or shielded from strong sources of electromagnetic noise.Con

4 of 36Copyright © D 262 -12/08Section A —General OperationPOWERING UP THE CONTROL When the Boiler Control 262 is powered up, the control displays the

5 of 36Copyright © D 262 -12/08Sequence, Section ALight (LITE) The LITE setting is selected if the boiler(s) that is used has a low thermal mass. This

6 of 36Copyright © D 262 -12/08External Unoccupied An external signal can place the 262 into an UnOccupied mode. Any time the UnO Sw (18)and the Com S

7 of 36Copyright © D 262 -12/08BOILER START (Boil STRT) (RESET RATIO) The Boil STRT temperature is the boiler supply water temperature that theheating

8 of 36Copyright © D 262 -12/08ROOM OCC & UNOCC (ROOM) (CHARACTERIZED HEATING CURVE)The ROOM is the desired room temperature for the boiler zone(s

9 of 36Copyright © D 262 -12/08Boosting (BOOST) When the control changes from the UnOccupied to the Occupied mode,it enters into a Boosting mode. In t