Tekmar D 270 Скачать руководство пользователя страница 4

© 

2010     D 

270 

08/10 

of 

24 

Section A

General

Operation

Page 4 - 5

Section B

Boiler

Operation

Page 5 - 7

Section C

Pump

Operation 

Page 8

The following defined terms and symbols are used throughout this manual to bring attention to the presence of hazards of various risk 
levels, or to important information concerning the life of the product.

- Warning Symbol: Indicates presence of hazards which can cause severe personal injury, death or 

substantial property damage if ignored.

- Double insulated

- Local level, appliances

INSTALLATION

CATEGORY II

Definitions

Section D

Boiler Reset

Operation

Page 8 - 10

Section E

DHW

Operation

Page 10 - 13

POWERING UP THE CONTROL

When the control is powered up, all segments in the LCD are turned on for 2 seconds. Next, the control displays the control type 
number in the LCD for 2 seconds. Next, the software version is displayed for 2 seconds. Finally, the control enters into the normal 
operating mode.

OPERATION

The control stages or modulates the boiler to control supply water temperature to a hydronic system. 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) to maintain the supply 
temperature based on the outdoor air temperature and the Characterized Heating Curve settings. Refer to section D.

DHW

When a DHW demand is present, the control operates the boiler to maintain the supply water temperature at least as hot as the 
DHW exchange setting or high enough to satisfy tank temperature. Refer to section E.

13

Com

14

UnO

Sw

UnOccupied

Switch

SETBACK (Occ and UnOcc)

To provide greater energy savings, the control has a setback feature. With setback, the 
supply water temperature in the system is reduced when the building is unoccupied. By 
reducing the supply water temperature, the air temperature in the space may be reduced 
even when thermostat(s) are not turned down. Any time the 

UnO Sw 

(18) and the 

Com

 (17) 

are shorted together, the control operates in the unoccupied mode. 

When in the unoccupied mode, the 

UNOCC

 segment is displayed in the LCD. The control 

adjusts the supply water temperature based on the 

UNOCC

 settings made in the control.

Section A: General Operation

Sequence of Operation

Содержание D 270

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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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