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Tekmar Boiler Control 265 - User Manual

Tekmar Boiler Control 265
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- Data Brochure
Boiler Control 265
D 265
07/10
1 of 36 © 2010 D 265 - 07/10
The tekmar Boiler Control 265 can control the supply water temperature on up to three modulating boilers based on outdoor
temperature or setpoint requirements. The control can be set to control up to two modulating boilers based on outdoor temperature
or domestic hot water requirements. A large easy to read display provides current system temperatures and operating status. The
control has outputs for a primary pump, individual boiler pumps, and either a combustion air damper or an alert.
Additional functions include:
• Outdoor Reset
Sequential or Parallel Modulation
Installer and Advanced access levels
Primary pump output
Individual boiler pump outputs
• Pump purging
Boiler demand for space heating loads
DHW demand for domestic hot water loads
Setpoint demand for setpoint loads
0 – 10 V (dc) BAS / EMS input
Test sequence to ensure proper component operation
Setback input for energy savings
CSA C US certified
• Pump exercising
Input
Universal
Sensor
Included
Input
Universal
Sensor
Included
Input
Outdoor
Sensor
Included
or
Input
0-10 V (dc)
External Signal
Input
Boiler
Demand
Output
Modulating
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
Combustion Air
or Alert
1
Com
2
Boil
Sup
3
Boil
Ret
4
Out
+
5
UnO
Sw
6
+
7
–+–+–
8
Mod2 mAMod1 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
H2037B
Menu Item
Boiler Demand
DHW / Setpoint Demand
WWSD
Modulation
Boiler Output (x10,000 BTU/hr)
External Input Signal
Offset / Priority Override
Test
off
not t
esting
red testing
red tes
ting paused
For maximum heat,
press & hold T
est for
3 seconds.
Meets Class B:
Canadian ICES
FCC Part 15
Date Code
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
Output
Modulating
Boiler
Output
Modulating
Boiler
or
Signal wiring must be rated at least 300 V.
Note:
Boiler, DHW,
or setpoint
demand must
be powered with
20 to 260 V (ac)
before the boiler
is able to fire.
Question and Answer IconNeed help?

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Summary

Sequence of Operation Overview

Boiler Target Temperature Control

Explains how boiler target temperature is determined by various inputs and settings.

Boiler Modulation and Operation Types

Outdoor Reset and Terminal Units

Characterized Heating Curve

Explains how supply water temperature is varied by outdoor temperature.

Domestic Hot Water (DHW) Operation

DHW Demand and Target Temperature

Explains how DHW demand triggers operation and sets target temperature.

DHW Mode and Priority Operation

Outlines different DHW modes and priority settings for tank recovery.

Setpoint Operation

Setpoint Demand and Target Temperature

Explains setpoint demand and how it affects the target temperature.

Setpoint Modes and Priority

Covers different setpoint modes, including priority and conditional priority.

External Input Operation

External Input Signal Configuration

Details how to connect and configure external input signals (0-10V, 2-10V).

Pump Operation and Purge Functions

Primary Pump Operation

Explains the conditions under which the primary pump operates.

Installation and Wiring Preparation

Safety Precautions and Getting Ready

Highlights safety warnings and checks before beginning installation.

Mounting and Rough-in Wiring

Details the steps for mounting the control base and initial wiring.

Electrical Connections to the Control

Powered Input Connections

Explains connections for power supply, boiler, DHW, setpoint, and external inputs.

Control Output Terminal Functions

Sensor and Unpowered Input Connections

Testing Control Wiring

Testing Sensors and Power Supply

Procedures for testing sensors and the main power supply.

Testing Powered Inputs

Describes how to test boiler, DHW, setpoint, and external inputs.

Testing Control Outputs

Testing Primary Pump and C.A.;Alert Outputs

Procedures for testing the primary pump and C.A./Alert outputs.

Testing Boiler and DHW Outputs

Describes how to test boiler enable, DHW pump/valve, and boiler pump outputs.

DIP Switch Configuration Details

Alert;Combustion Air DIP Switch

Selects between combustion air damper or alert device function.

Off;Exercise DIP Switch

Enables pump exercising to prevent seizing during inactivity.

Parallel;Sequential Modulation DIP Switch

Selects parallel or sequential modulation for multiple boilers.

View Menu Items

Adjust Menu - Room and Boiler Configuration

Adjust Menu - Boiler Performance Settings (1 of 2)

Adjust Menu - Boiler Performance Settings (2 of 2)

Adjust Menu - Boiler and DHW Settings

Adjust Menu - Setpoint and System Settings

Control Testing Procedures

Test Sequence Operation

Step-by-step guide to testing control functions and outputs.

Error Messages and Troubleshooting

Sensor Error Messages

Details errors related to outdoor, supply, and return sensors.

Boiler Alert and General Errors

Covers boiler alert errors and general memory/configuration errors.

Summary

Sequence of Operation Overview

Boiler Target Temperature Control

Explains how boiler target temperature is determined by various inputs and settings.

Boiler Modulation and Operation Types

Outdoor Reset and Terminal Units

Characterized Heating Curve

Explains how supply water temperature is varied by outdoor temperature.

Domestic Hot Water (DHW) Operation

DHW Demand and Target Temperature

Explains how DHW demand triggers operation and sets target temperature.

DHW Mode and Priority Operation

Outlines different DHW modes and priority settings for tank recovery.

Setpoint Operation

Setpoint Demand and Target Temperature

Explains setpoint demand and how it affects the target temperature.

Setpoint Modes and Priority

Covers different setpoint modes, including priority and conditional priority.

External Input Operation

External Input Signal Configuration

Details how to connect and configure external input signals (0-10V, 2-10V).

Pump Operation and Purge Functions

Primary Pump Operation

Explains the conditions under which the primary pump operates.

Installation and Wiring Preparation

Safety Precautions and Getting Ready

Highlights safety warnings and checks before beginning installation.

Mounting and Rough-in Wiring

Details the steps for mounting the control base and initial wiring.

Electrical Connections to the Control

Powered Input Connections

Explains connections for power supply, boiler, DHW, setpoint, and external inputs.

Control Output Terminal Functions

Sensor and Unpowered Input Connections

Testing Control Wiring

Testing Sensors and Power Supply

Procedures for testing sensors and the main power supply.

Testing Powered Inputs

Describes how to test boiler, DHW, setpoint, and external inputs.

Testing Control Outputs

Testing Primary Pump and C.A.;Alert Outputs

Procedures for testing the primary pump and C.A./Alert outputs.

Testing Boiler and DHW Outputs

Describes how to test boiler enable, DHW pump/valve, and boiler pump outputs.

DIP Switch Configuration Details

Alert;Combustion Air DIP Switch

Selects between combustion air damper or alert device function.

Off;Exercise DIP Switch

Enables pump exercising to prevent seizing during inactivity.

Parallel;Sequential Modulation DIP Switch

Selects parallel or sequential modulation for multiple boilers.

View Menu Items

Adjust Menu - Room and Boiler Configuration

Adjust Menu - Boiler Performance Settings (1 of 2)

Adjust Menu - Boiler Performance Settings (2 of 2)

Adjust Menu - Boiler and DHW Settings

Adjust Menu - Setpoint and System Settings

Control Testing Procedures

Test Sequence Operation

Step-by-step guide to testing control functions and outputs.

Error Messages and Troubleshooting

Sensor Error Messages

Details errors related to outdoor, supply, and return sensors.

Boiler Alert and General Errors

Covers boiler alert errors and general memory/configuration errors.

Tekmar Boiler Control 265 Specifications

General IconGeneral
Control TypeBoiler Control
Display TypeLCD
Control OutputsRelay
DHW PriorityYes
Outdoor ResetYes
Enclosure RatingNEMA 1
Sensor TypeNTC Thermistor
Boiler TypeModulating or Single Stage
Supply Water Temperature Sensor10K Thermistor
Outdoor Temperature Sensor10K Thermistor
DHW Temperature Sensor10K Thermistor
Number of Stages2

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