Tekmar D 270 Data Brochure Download Page 2

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2010     D 

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How To Use The Data Brochure

User Interface

Table of Contents

DIP Switch Settings ........................................Pg 17

Control Settings ..............................................Pg 18

 

View Menu

 ..............................................Pg 18

 
 

Adjust Menu

 ...........................................Pg 19

 
Testing the Control .........................................Pg 21

Error Messages ...............................................Pg 23

Technical Data .................................................Pg 24

Limited Warranty ............................................Pg 24

User Interface ..................................................Pg 2

Display .............................................................Pg  3

Sequence of Operation ..................................Pg 4

 
 

Section A: General Operation

 ..............Pg 4

 
 

Section B: Boiler Operation

..................Pg 5

 
 

Section C: Pump Operation

 ..................Pg  8

 
 

Section D: Boiler Reset Operation

 ......Pg 8

 
 

Section E: DHW Operation

 ...................Pg 10

Installation .......................................................Pg  13

This  brochure  is  organized  into  four  main  sections.  They  are:  1)  Sequence  of  Operation,  2)  Installation,  3)  Control  Settings,  and
4) Testing and Troubleshooting. The Sequence of Operation section has six sub-sections. We recommend reading Section A: General 
of the Sequence of Operation, as this contains important information on the overall operation of the control. Then read the sub 
sections that apply to your installation.

The Control Settings section (starting at DIP Switch Settings) of this brochure describes the various items that are adjusted and 
displayed by the control. The control functions of each adjustable item are described in the Sequence of Operation.

The control uses a Liquid Crystal Display (LCD) as the method of supplying information. You use the LCD in order to setup and 
monitor the operation of your system. The control has four push buttons (

Menu

Item

,  ,  ) for selecting and adjusting settings. As 

you program your control, record your settings in the ADJUST menu table, which is found in the second half of this brochure.

Menu

All of the items displayed by the control are organized into two menus (

View and Adjust

). 

These menus are listed on the top left hand side of the display (Menu Field). To select 
a menu, use the 

Menu 

button. By pressing and releasing the 

Menu 

button, the display 

sequences between the two menus. Once a menu is selected, there will be a group of 
items that can be viewed within the menu.

Item

The abbreviated name of the selected item will be displayed in the item field of the 
display. To view the next available item, press and release the 

Item 

button. Once you 

have reached the last available item in a menu, pressing and releasing the 

Item 

button 

will return the display to the first item in the selected menu.

The items can be quickly scrolled through by holding the 

Item 

button and then pressing 

the   button. To rapidly scroll through the items in the reverse order, hold the 

Item 

button and press the   button.

Adjust 

To make an adjustment to a setting in the control, begin by selecting the ADJUST menu 
using the 

Menu 

button. Then select the desired item using the 

Item 

button. Finally, use 

the  , and / or   button to make the adjustment.

Additional information can be gained by observing the Status field of the LCD. The 
status field will indicate which of the control’s outputs are currently active. Most 
symbols in the status field are only visible when the VIEW menu is selected.

Summary of Contents for D 270

Page 1: ...Indr UnO Boil Com Sw Boiler Control 270 One Modulating Boiler DHW Boiler Pmp P2 DHW Pmp Vlv H2039A Menu Item Boiler Demand DHW Demand Modulation DHW Priority Override Test o not testing red testing r...

Page 2: ...sh buttons Menu Item for selecting and adjusting settings As you program your control record your settings in the ADJUST menu table which is found in the second half of this brochure Menu All of the i...

Page 3: ...gs Burner Displays when Relay 1 is turned on Warning Displays when an error exists or when a limit has been reached Pump Displays when the primary or boiler pump is operating Lock Unlock Displays when...

Page 4: ...m The supply water temperature is based on outdoor reset or a fixed temperature for DHW Outdoor Reset When a boiler demand signal from the heating system is present the control operates the boiler s t...

Page 5: ...calculates a boiler target temperature that is below the Boiler Minimum setting the boiler target temperature is adjusted to at least the Boiler Minimum setting During this condition if the boiler is...

Page 6: ...ut signal range of the 270 control The Minimum Modulation setting limits the control output range in order to match the boiler s input range To calculate the Minimum Modulation use the following formu...

Page 7: ...residential cast iron boilers or steel tube boilers The Med Mass setting provides a moderate response to the heating system Hi 3 The Hi setting is selected if the boiler that is used has a high therm...

Page 8: ...of time that the primary pump continues to run is adjustable using the Primary Pump Purge setting The primary pump continues to run until either the purging time has elapsed or the boiler supply temp...

Page 9: ...ight periods INDOOR SENSOR With the indoor sensor connected the control is able to sense the actual room temperature Indoor temperature feedback fine tunes the supply water temperature in the heating...

Page 10: ...on the WWSD pointer in the display When the control is in WWSD the Boiler Demand pointer is displayed if there is a boiler demand However the control does not operate the heating system to satisfy thi...

Page 11: ...contact is opened until the heating system has recovered before returning to DHW operation This mode can be used if a DHW tank is piped in direct return and a DHW valve is installed DHW MODE 4 Extern...

Page 12: ...heat from the boiler into the DHW tank The control continues this purge for a maximum of four minutes or until the boiler supply water temperature drops 20 F 11 C below the boiler target temperature d...

Page 13: ...or Sensor 070 One Universal Sensor 082 Data Brochures D 270 D 070 D 001 Application Brochure A 270 Note Carefully read the details of the Sequence of Operation to ensure that you have chosen the prope...

Page 14: ...power supply must be used to power both the DHW Demand and the Boiler Demand circuits since they both share the Com Dem terminal Output Connections Primary Pump Contact Prim P1 The Prim P1 output term...

Page 15: ...When these two terminals are shorted together the control registers an unoccupied UNOCC signal Connection to Operate Modulating Boiler 11 12 Mod V dc V dc STEP FIVE TESTING THE WIRING General Each ter...

Page 16: ...e wiring between the terminal block and pump and refer to any installation or troubleshooting information supplied with the pump If the pump operates properly disconnect the power and remove the jumpe...

Page 17: ...oth with water and wring out prior to wiping control Do not use solvents or cleaning solutions DIP Switch Settings GENERAL The DIP switch settings on the control are very important and should be set t...

Page 18: ...measured by the boiler supply sensor 22 to 266 F 30 to 130 C Boiler Target Boiler target temperature is the temperature the control is currently trying to maintain at the boiler supply sensor of the...

Page 19: ...F 82 C B1 Boiler Minimum The minimum allowed boiler target temperature Check the boiler manufacturer s manual for a recommended setting OFF 80 to 180 F OFF 27 to 82 C Default 140 F 60 C B1 Boiler Maxi...

Page 20: ...C Default 180 F 82 C DHW Exchange Unoccupied Selects whether or not a DHW demand will be responded to during the UnOccupied period OFF On Default OFF WWSD Occupied The system s warm weather shut down...

Page 21: ...essed again to advance to the next step This can also be used to rapidly advance through the test sequence To reach the desired step repeatedly press and release the Test button until the appropriate...

Page 22: ...ystem start up in order to purge air from the piping To enable the Max Heat feature use the following procedure 1 Press and hold the Test button for more than 3 seconds At this point the control flash...

Page 23: ...to read the boiler supply sensor due to a short circuit The control will not operate the boiler until the sensor is repaired Locate and repair the problem as described in the Data Brochure D 070 To cl...

Page 24: ...AND FITNESS FOR A PARTICULAR PURPOSE DURA BILITY OR DESCRIPTION OF THE PRODUCT ITS NON INFRINGEMENT OF ANY RELEVANT PATENTS OR TRADEMARKS AND ITS COMPLIANCE WITH OR NON VIOLATION OF ANY APPLICABLE EN...

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