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Technical Data

 

36 of 36

Product design, software and literature are Copyright © 2010 by:
tekmar Control Systems Ltd. and tekmar Control Systems, Inc.

All specifications are subject to change without notice.

Printed in Canada. D 265 - 07/10.

Limited Warranty 

The liability of tekmar under this warranty is limited. The 

Purchaser, by taking receipt of any tekmar product (“Product”), acknowl-
edges the terms of the Limited Warranty in effect at the time of such Product 
sale and acknowledges that it has read and understands same.

The tekmar Limited Warranty to the Purchaser on the Products sold hereunder 
is a manufacturer’s pass-through warranty which the Purchaser is authorized 
to pass through to its customers. Under the Limited Warranty, each tekmar 
Product is warranted against defects in workmanship and materials if the Prod-
uct is installed and used in compliance with tekmar’s instructions, ordinary 
wear and tear excepted. The pass-through warranty period is for a period of 
twenty-four (24) months from the production date if the Product is not installed 
during that period, or twelve (12) months from the documented date of installa-
tion if installed within twenty-four (24) months from the production date.

The liability of tekmar under the Limited Warranty shall be limited to, at tekmar’s 
sole discretion: the cost of parts and labor provided by tekmar to repair defects in 
materials and/or workmanship of the defective product; or to the exchange of the 
defective product for a warranty replacement product; or to the granting of credit 
limited to the original cost of the defective product, and such repair, exchange or 
credit shall be the sole remedy available from tekmar, and, without limiting the 
foregoing  in  any  way,  tekmar  is  not  responsible,  in  contract,  tort  or  strict  prod-
uct liability, for any other losses, costs, expenses, inconveniences, or damages, 
whether direct, indirect, special, secondary, incidental or consequential, arising 
from ownership or use of the product, or from defects in workmanship or materials, 
including any liability for fundamental breach of contract.

The pass-through Limited Warranty applies only to those defective Products 
returned to tekmar during the warranty period. This Limited Warranty does not 
cover the cost of the parts or labor to remove or transport the defective Product, or 
to reinstall the repaired or replacement Product, all such costs and expenses being 
subject to Purchaser’s agreement and warranty with its customers.

Any representations or warranties about the Products made by Purchaser to its 
customers which are different from or in excess of the tekmar Limited Warranty are 

the Purchaser’s sole responsibility and obligation. Purchaser shall indemnify and 
hold tekmar harmless from and against any and all claims, liabilities and damages 
of any kind or nature which arise out of or are related to any such representations 
or warranties by Purchaser to its customers.

The pass-through Limited Warranty does not apply if the returned Product has 
been damaged by negligence by persons other than tekmar, accident, fire, Act 
of God, abuse or misuse; or has been damaged by modifications, alterations or 
attachments  made  subsequent  to  purchase  which  have  not  been  authorized  by 
tekmar; or if the Product was not installed in compliance with tekmar’s instructions 
and/or the local codes and ordinances; or if due to defective installation of the 
Product; or if the Product was not used in compliance with tekmar’s instructions.

THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR 
IMPLIED, WHICH THE GOVERNING LAW ALLOWS PARTIES TO CONTRACTU-
ALLY EXCLUDE, INCLUDING, WITHOUT LIMITATION, IMPLIED WARRANTIES 
OF MERCHANTABILITY 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 ENVIRONMENTAL, HEALTH OR 
SAFETY LEGISLATION; THE TERM OF ANY OTHER WARRANTY NOT HEREBY 
CONTRACTUALLY EXCLUDED IS LIMITED SUCH THAT IT SHALL NOT EXTEND 
BEYOND  TWENTY-FOUR  (24)  MONTHS  FROM  THE  PRODUCTION  DATE,  TO 
THE EXTENT THAT SUCH LIMITATION IS ALLOWED BY THE GOVERNING 
LAW. 

Product Warranty Return Procedure

  All  Products  that  are  believed  to  have 

defects in workmanship or materials must be returned, together with a written 
description of the defect, to the tekmar Representative assigned to the territory in 
which such Product is located. If tekmar receives an inquiry from someone other 
than a tekmar Representative, including an inquiry from Purchaser (if not a tekmar 
Representative) or Purchaser’s customers, regarding a potential warranty claim, 
tekmar’s sole obligation shall be to provide the address and other contact informa-
tion regarding the appropriate Representative.

The installer must ensure that this control and its wiring are isolated and/or shielded from strong sources of electromagnetic noise. Conversely, this Class B digital apparatus 
complies with Part 15 of the FCC Rules and meets all requirements of the Canadian Interference-Causing Equipment Regulations. However, if this control does cause harmful 
interference to radio or television reception, which is determined by turning the control off and on, the user is encouraged to try to correct the interference by re-orientating 
or relocating the receiving antenna, relocating the receiver with respect to this control, and/or connecting the control to a different circuit from that to which the receiver is 
connected.

Cet appareil numérique de la classe B respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada.

Caution 

The nonmetallic enclosure does not provide grounding between conduit connections. Use grounding type bushings and jumper wires.

Attention 

Un boîtier nonmétallique n´assure pas la continuité électrique des conduits. Utiliser des manchons ou des fils de accord spécialement conçus pour la mise 

á la terre.

Control Systems

tekmar Control Systems Ltd., Canada
tekmar Control Systems, Inc., U.S.A.

Head Office: 5100 Silver Star Road
Vernon, B.C. Canada V1B 3K4
(250) 545-7749  Fax. (250) 545-0650
Web Site: www.tekmarcontrols.com

Limited Warranty and Product Return Procedure

Boiler Control 265 

Three Modulating Boiler & DHW / Setpoint

 

Literature 

—  D 265, A 265’s, D 001, D 070.

Control 

—  Microprocessor PID control; This is 

not a safety (limit) control

.

Packaged weight 

—  3.5 lb. (1600 g), Enclosure A, blue modified PVC plastic

Dimensions 

—  6-5/8” H x 7-9/16” W x 2-13/16” D (170 x 193 x 72 mm)

Approvals 

—  CSA C US, CSA/UL 61010-1, meets Class B: ICES & FCC Part 15

Ambient conditions 

—  Indoor use only, 32 to 122°F (0 to 50°C), < 90% RH non-condensing.

 

 

 

Altitude <6560 feet (2000 m)

 

 

 

Installation Category II, Pollution Degree 2

Power supply 

—  115 V (ac) ±10% 60 Hz 600 VA

Relay capacity 

—  230 V (ac) 5 A 1/3 hp pilot duty 240 VA 

Modulation Outputs  —  0-20 mA / 4-20 mA (up to 1000Ω load)
Demands 

—  20 to 260 V (ac) 2 VA

Sensors included 

—  NTC thermistor, 10 kΩ @ 77°F (25°C ±0.2°C) ß=3892

 

 

 

Outdoor Sensor 070 and 2 of Universal Sensor 071, 4 x 500Ω 
Resistors

Optional devices 

—  tekmar type #: 032

1

Com

2

Boil
Sup

3

Boil
Ret

4

Out

+

5

UnO

Sw

6

+

7

+

+

8

Mod2 mA

Mod1 mA

9 10 11

12 13

Prim

P1

L

14

N

15 16 17

1

18

1

19

2

20

2

21 22 23 24 25 26 27 28 29

Boil

Dem

30

Com
Dem

31

Setp/
DHW

Boiler Control 265

Three Modulating Boiler & DHW / Setpoint

Do not apply power

Mod3 mA

Power

Boiler

Boiler

C.A./
Alert

Boiler 3 /

DHW

Boiler

Pump 1

Boiler

Pump 2

Boiler

Pump 3

H203

7B

Menu

Item

Boiler Demand
DHW / Setpoint Demand
WWSD
Modulation
Boiler Output (x10,000 BTU/hr)
External Input Signal

Offset / Priority Override

Test

off 

not testing

red 

testing

red 

testing paused

Made in Canada by

tekmar Control Systems Ltd.

Power 

115 V ±10% 60 Hz 600 VA

Relays 

230 V (ac) 5 A 1/3 hp, pilot duty 240 VA

Demands 

20 to 260 V (ac) 2 VA 

Stand Alone

Advanced

External Input

Off

CA.

Off

Alert

Fixed Lead

First On / Last Off

First On / First Off

Soft Stop

Rotate

Parallel

Installer

Exercise

Sequential

Signal wiring must be rated at least 300 V. 

For maximum heat,
press & hold Test for
3 seconds.

Meets Class B:
Canadian ICES
FCC Part 15

D

at

e Co

de

Содержание Boiler Control 265

Страница 1: ...dulating Boiler Output Boiler Enable Output Pump Output Boiler Enable or Pump Input Setpoint or DHW Demand Input 115 V ac Power Supply Output Primary Pump Input Timer or Switch Optional Output Combust...

Страница 2: ...he 265 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...

Страница 3: ...ontrol is in UnOccupied Mode Primary Pump Displays when the primary pump relay is turned on Occupied Schedule Displays when the control is in Occupied Mode Boiler Pump Displays which boiler pump relay...

Страница 4: ...ply water temperature to a hydronic space heating system or setpoint When using the control to provide Domestic Hot Water DHW requirements only two modulating boilers can be operated The supply water...

Страница 5: ...t setting This alert can be used to determine if the boilers have failed to fire To reset the alert press and hold the and buttons for 5 seconds while in the VIEW menu ROTATION The control includes an...

Страница 6: ...ATION Boiler 1 Boiler 2 Boiler 3 100 MOD OFF PARALLEL MODULATION Boiler 1 Boiler 2 Boiler 3 MOD MOD MOD SEQUENTIAL MODULATION The control offers a sequential modulation option This is selected by sett...

Страница 7: ...culate the Maximum Modulation use the following formulae For 4 to 20 mA Maximum Modulation 4 mA Boiler s Maximum Input Signal x 100 4 20 mA For 0 to 10 V dc Maximum Modulation 0 V dc Boiler s Maximum...

Страница 8: ...onse rate it may be necessary to increase the Motor Speed setting in order to increase the stability of the boiler modulation Example 1 A boiler s input signal range is 2 to 9 V dc The 265 control has...

Страница 9: ...ve PID logic in order to satisfy the boiler target temperature Fixed Differential If the user desires to have a fixed differential this is set using the boiler differential setting in the ADJUST menu...

Страница 10: ...to thermally shock a boiler when it is shut off at high fire The Soft Stop feature forces the boiler to modulate down to minimum before turning off This is designed to prevent large volumes of cold ai...

Страница 11: ...49 C 140 F 60 C 190 F 88 C 180 F 82 C 160 F 71 C 150 F 66 C BOIL MAX 140 F 60 C 160 F 71 C 210 F 99 C 200 F 93 C 180 F 82 C 170 F 77 C BOIL MIN OFF OFF 140 F 60 C 140 F 60 C 140 F 60 C 140 F 60 C High...

Страница 12: ...nter 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 this demand The co...

Страница 13: ...HG The DHW demand overrides the boiler reset target temperature except when the boiler reset target is higher than the DHW Exchange setting DHW MODE AND PRIORITY OPERATION The control has five differe...

Страница 14: ...nues this purge for a maximum of two minutes or until the boiler supply water temperature drops 20 F 11 C below the boiler target temperature during the DHW operation The control also stops the purge...

Страница 15: ...the boiler supply temperature is sufficiently reduced the Boiler 3 DHW contact shuts off The heating system is turned on for a period of time to prevent the building from cooling off After a period o...

Страница 16: ...iler SETP MODE 2 Setpoint in Parallel with Priority Whenever a setpoint demand is present the boiler s is operated to maintain the setpoint target and the primary pump Prim P1 contact is opened It is...

Страница 17: ...mary pump and boiler pumps operate as described in section G INPUT SIGNAL The control can accept either a 0 10 V dc signal or a 2 10 V dc signal The External Input Signal setting must be set to the pr...

Страница 18: ...Pump Boiler Pumps Primary Pump Boiler Pumps Primary Pump Boiler Pumps OR Example Range 0 10 V dc Input 7 V dc 157 F 69 C Offset 5 F 3 C 5 F 3 C Boiler Target 162 F 72 C CONVERSION TABLE 0 10 0 20 mA 0...

Страница 19: ...g to cross between sections as the wires will interfere with safety dividers which should be installed at a later time Power must not be applied to any of the wires during the rough in wiring stage Al...

Страница 20: ...DHW MODE must also be set to 1 through 4 Setpoint Demand To generate a Setpoint Demand a voltage between 24 V ac and 230 V ac must be applied across the Setp DHW Dem and Com Dem terminals 31 and 30 T...

Страница 21: ...There is no power available on these terminals from the control These terminals are to be used as a switch to enable the modulating boiler Since this is an isolated contact it may switch a voltage be...

Страница 22: ...to 0 to 10 V dc using an external 500 resistor across the Mod 1 Mod 2 Mod 3 terminals The 4 to 20 mA output can be converted to a 0 135 output for a Modutrol IV gas valve actuating motor using a 0 135...

Страница 23: ...the control to measure the boiler supply water temperature Boiler Return Sensor Connect the two wires from the Boiler Return Sensor 071 to the Com and Boil terminals 1 and 3 The boiler return sensor i...

Страница 24: ...3 and 14 using an AC voltmeter the reading should be between 103 5 and 126 5 V ac Test the Powered Inputs Boiler Demand If a boiler demand is used measure the voltage between the Boil Dem and Com Dem...

Страница 25: ...2 are running If the boiler s operates properly disconnect the power and remove the jumper Boiler 3 DHW Contact Boiler Operation If a boiler is connected to the Boiler 3 DHW contact 21 and 22 make sur...

Страница 26: ...switch settings change the items that are available to be viewed and or adjusted in the User Interface If a DIP switch is changed while the control is powered up the control responds to the change in...

Страница 27: ...h is set to Exercise the pumps are operated for 10 seconds after every three days of inactivity Parallel Sequential The Parallel Sequential DIP switch selects whether to modulate the boilers using par...

Страница 28: ...0 Boiler 2 Modulation Current percent modulation of the boiler s burner This item is only available when Boiler 2 is set to Au automatic or CP1 copy 1 0 to 100 Boiler 3 Modulation Current percent modu...

Страница 29: ...Default Au B Boiler 2 Selects whether or not boiler 2 is operational CP1 copies the settings of Boiler 1 to Boiler 2 CP1 Au Auto OFF Default CP1 B Boiler 3 Selects whether or not boiler 3 is operation...

Страница 30: ...iler and when the burner actually fires This item is only available when Boiler 1 is set to Au automatic 0 00 to 4 00 minutes 1 sec increment Default 0 10 min B Boiler Mass 1 The thermal mass characte...

Страница 31: ...hour This item is only available when Boiler 2 is set to Au automatic or CP1 copy 1 1 to 1999 Default 10 B Maximum Boiler 2 Output The maximum boiler 2 output in 10 000 s of BTU hour This item is onl...

Страница 32: ...t to Au automatic or CP1 copy 1 and DHW MODE is set to OFF 0 to 50 Default 0 B Maximum Modulation 3 The maximum percent modu lation of the burner This item is only available when Boiler 3 is set to Au...

Страница 33: ...C WWSD Occupied The system s warm weather shut down temperature during the Occupied period This item is only available when the External Input Stand Alone DIP switch is set to Stand Alone 35 to 100 F...

Страница 34: ...If Boiler 3 is set to OFF and DHW MODE is set to 3 or 4 the DHW contact is closed and the primary pump stays on If Boiler 3 is set to OFF and DHW MODE is set to 1 or 2 the DHW contact is closed and th...

Страница 35: ...it The control will not operate the boiler s until the sensor is repaired Locate and repair the problem as described in the Data Brochure D 070 To clear the error message from the control after the se...

Страница 36: ...HEALTH OR SAFETY LEGISLATION THE TERM OF ANY OTHER WARRANTY NOT HEREBY CONTRACTUALLY EXCLUDED IS LIMITED SUCH THAT IT SHALL NOT EXTEND BEYOND TWENTY FOUR 24 MONTHS FROM THE PRODUCTION DATE TO THE EXT...

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