S. J. Kowalski Inc.

Tekmar Boilers and / or DHW Controls

The overall operation of a heating, ventilation and cooling system can be optimized by a tekmar Outdoor Reset Control. Outdoor Reset Controls include Energy Saving features that provide a return on investment with lower heating bills, while reducing impact on the environment. These controls specialize in operating the system at maximum efficiency while maintaining priority for other devices when needed. The type of outdoor reset control selected by a contractor will depend on the overall system design.

256 One Stage Boiler Control

The Boiler Control 256 is a microprocessor-based control designed to regulate the supply water temperature from a single boiler based on the outdoor temperature. To avoid boiler short cycling and large temperature swings, the 256 is able to continuously adjust the boiler differential. The 256 includes control functions such as Warm Weather Shut Down (WWSD) and Minimum Boiler setting. The control has a liquid crystal display (LCD) that normally displays the Boiler Supply temperature, but can display other temperatures and settings.


260 One Stage Boiler and DHW Control

The Boiler Control 260 is a microprocessor-based control designed to regulate the supply water temperature from a single boiler based on either outdoor air temperature or a DHW demand. The 260 can control either a DHW pump or valve and provide DHW Priority. A tekmar indoor sensor can be connected to the 260 in order to provide indoor temperature feedback from the heating system.

261 Two Stage Boiler & Setpoint

The Boiler Control 261 is a microprocessor-based two stage boiler control designed to regulate the supply water temperature from a single two stage boiler or two single stage boilers based on either outdoor air temperature or a setpoint demand. The 261 can stage and rotate two single fire boilers or it can stage a single Lo/Hi fire boiler. The 261 also operates the system pump.


262 Two Stage Boiler & DHW / Two Stage DHW

The Boiler Control 262 is a microprocessor-based boiler outdoor reset control that has two modes of operation. Mode 1 operates as two stage boiler and DHW, and mode 2 operates as two boilers or Lo / Hi fire boiler for DHW applications. A tekmar Indoor Sensor, Digital RTU, or Zone Control can be connected to provide indoor temperature feedback from single or multiple zones. An optional Remote Display Module 040 and DHW indirect sensor can also be added.


263 Two Stage/One Modulating Boiler, DHW & Setpoint

The tekmar Boiler Control 263 can control the supply water temperature from a single modulating boiler or up to 2 on / off stages based on outdoor temperature, domestic hot water requirements, or setpoint requirements. A large easy to read display provides current system temperatures and operating status. The control has an internal setback timer, which can have 2 events per day on a 24 hour, 5-1-1 day or 7 day schedule.


264 Four Stage Boiler & DHW / Setpoint

The Boiler Control 264 is a microprocessor-based four stage boiler control. The 264 can provide either outdoor reset and setpoint operation or outdoor reset and DHW operation. The 264 stages and has Equal Run Time Rotation of the boilers and also operates the system pump and individual boiler pumps. One, two, three and four stage on / off boilers can be operated. The 264 also has options for fixed lead and fixed last rotation sequences. A contact is also available for either a combustion air damper or external alarm.


265 Three Modulating Boiler & DHW / Setpoint

The Boiler Control 265 is a microprocessor-based control designed to operate up to three modulating boilers. The 265 can provide either outdoor reset and setpoint operation or outdoor reset and DHW operation. The 265 provides either sequential or parallel modulation and has Equal Run Time Rotation of the boilers. The control also operates the system pump and individual boiler pumps. The 265 provides either a 0 -20 mA or 4 -20 mA signal to each boiler. A contact is also available for either a combustion air damper or external alarm. The control can provide outdoor reset using an outdoor sensor or the control can accept a 0 -10 V (dc) signal from an EMS / BAS to establish the required water temperature.


268 Nine Stage Boiler & DHW / Setpoint

The Boiler Control 268 is a microprocessor-based nine stage boiler control. The 268 can provide either outdoor reset and setpoint operation or outdoor reset and DHW operation. The 268 stages and has Equal Run Time Rotation of the boilers and also operates the system pump and individual boiler pumps. One, two, three and four stage on / off boilers can be operated. The 268 also has options for fixed lead and fixed last rotation sequences. A contact is also available for either a combustion air damper or external alarm. The control can provide outdoor reset using an outdoor sensor or the control can accept a 0 -10 V (dc) signal from an EMS / BAS to establish the required water temperature.


270 One Modulating Boiler & DHW

The tekmar Boiler Control 270 can control the supply water temperature from a single modulating boiler based on outdoor temperature or domestic hot water requirements. A large easy to read display provides current system temperatures and operating status.


274 One tN4, Four Stage Boiler & DHW / Setpoint

The Boiler Control 274 operates up to four on/off boilers to provide outdoor reset operation, domestic hot water and setpoint operation with priority. When operating as a tN4 System Control, the 274 can connect with up to 24 tN4 devices on a single boiler bus. The 274 has primary pump sequencing capabilities along with a flow proof or combustion air damper proof demand.


275 One tN4, Four Modulating Boiler & DHW / Setpoint

The Boiler Control 275 operates up to four modulating boilers to provide outdoor reset operation, domestic hot water and setpoint operation with priority. When operating as a tN4 System Control, the 275 can connect with up to 24 tN4 devices on a single boiler bus. The 275 has primary pump sequencing capabilities along with a flow proof or combustion air damper proof demand. The 275 can control up to four BTC I equipped boilers via direct drive.


279 One Stage Steam Control

The tekmar Steam Control 279 can operate a single on-off steam boiler or an on-off steam valve using outdoor reset. The control determines the on time of the boiler or valve based on the measured outdoor temperature and settings entered by the installer. A large LCD displays the current status and operating temperatures.


Model IDModel NameStgOD
Res.
Run Time
Rotation
WWSDDHW
Prod.
DHW
Priority
DHW W/
Reset Override
Setback W/
Reset
Pump
Exer.
7 Day
Timer
Dig.
Disp.
Volts
Input
287582561XX - -24
287592601XXXXXXX120
287602612XXX120
287612622XXXXXXXXX120
287622632XXXXXXXXXX120
287632644XXXXXXXXX120
287642653XXXXXXXXX120
287652689XXXXXXXXX120
287662701XXXXXXXX120
287672744XXXXXXXXXX120
287682754XXXXXXXXXX120
287692791XXXXX120
287702572XX
Model IDModel NameData SheetApplication
Guide
Sensor
Data
User
Manual
28758256OpenOpenOpen---
28759260OpenOpenOpen---
28760261OpenOpenOpen---
28761262OpenOpenOpenOpen
28762263OpenOpenOpen---
28763264OpenOpenOpen---
28764265OpenOpenOpen---
28765268OpenOpenOpen---
28766270OpenOpenOpen---
28767274OpenOpenOpen---
28768275OpenOpenOpen---
28769279OpenOpenOpen---
28770257OpenOpen