Application Brochure

ManualsBrandsTekmar ManualsThermostats & ControlsBoiler Control - tN4 Compatible - Outdoor Temp. Reset - Four Modulating Boiler - DHW - Setpoint - BAS

Boiler Control 284

284_A

02/13

Multi-Staging

Replaces: New

Application Brochure

The Boiler Control 284 obtains maximum efficiency from mixed boiler plants by taking the characteristics of each boiler

into account along with the target water temperatures & outdoor temperature.

The 284 provides numerous control options beyond the applications featured in this brochure. For a complete list of settings,

refer to the 284_D Installation & Operation Manual.

Outdoor temperature reset

Programmable schedules

tekmarNet

4 compatible

Control up to four boilers

Condensing & non-condensing boiler groups

Modulating, single stage or two stage

•

BACnet

or Modbus

communication

Primary pump sequencing

DHW priority

Setpoint operation

Combustion air damper control

Energy, flow & pressure monitoring

•

Summary of content (12 pages)

PAGE 1
Application Brochure 284_A 02/13 Boiler Control 284 Multi-Staging Replaces: New The Boiler Control 284 obtains maximum efficiency from mixed boiler plants by taking the characteristics of each boiler into account along with the target water temperatures & outdoor temperature. The 284 provides numerous control options beyond the applications featured in this brochure. For a complete list of settings, refer to the 284_D Installation & Operation Manual.
PAGE 2
Application A 284-1 Mechanical Description Two single stage non-condensing boilers & two modulating condensing boilers are operated to provide a boiler target temperature for space heating, indirect DHW and setpoint loads. The boiler target temperature for the space heating load is determined from outdoor temperature reset. Features: • The boiler plant is sequenced to obtain maximum efficiency based on the boiler types & target temperatures.
PAGE 3
Application A 284-1 Flow Proof C.A.
PAGE 4
Application A 284-2 Mechanical Description Four modulating condensing boilers are operated to provide an outdoor temperature reset boiler target for a space heating load. The fourth boiler also operates to provide heat for an indirect DHW load with priority over space heating. Features: • The boiler plant is sequenced to obtain maximum efficiency based on the boiler types & target temperatures.
PAGE 5
Application A 284-2 Flow Proof C.A.
PAGE 6
Application A 284-3 Mechanical Description Four two-stage non-condensing boilers are operated to provide a fixed setpoint temperature for a dedicated DHW load. The DHW recirculation pump can optionally be operated on a schedule to save energy. Features: • The boiler plant is sequenced to obtain maximum efficiency based on the boiler types & target temperatures. For detailed information about sequencing, rotation & staging, refer to the 284_D Installation & Operation Manual.
PAGE 7
Application A 284-3 Flow Proof C.A.
PAGE 8
Application A 284-4 Mechanical Description Two modulating condensing boilers are operated to provide heat for space heating and indirect DHW loads. The boiler target temperature for the space heating load is determined from outdoor temperature reset and indoor temperature feedback provided by tekmarNet® thermostats. Features: • The boiler plant is sequenced to obtain maximum efficiency based on the boiler types & target temperatures.
PAGE 9
Application A 284-4 Flow Proof C.A.
PAGE 10
Application A 284-5 Mechanical Description Two modulating non-condensing boilers are operated to provide a boiler target temperature for space heating and indirect DHW loads. The boiler target temperature for the space heating load is determined from outdoor temperature reset and indoor temperature. Features: • The boiler plant is sequenced to obtain maximum efficiency based on the boiler types & target temperatures.
PAGE 11
Application A 284-5 Heat Call Flow Proof C.A.
PAGE 12
Specifications The following are the recommended specifications for the Boiler Control 284 • The control shall be capable of sequencing up to four single stage, two stage or modulating boilers. • The control shall be capable of operating combinations of condensing & non-condensing boilers. • The control shall be capable of adjusting the boiler plant target to provide indirect domestic hot water heating with priority.