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

P1 P2 P3 P4

284

S1 = DHW Sensor

S2 = Boiler Inlet Sensor

S3-S6 - Boiler Outlet Sensors

P1-P4 = Boiler Pumps

P5 = DHW Recirculation Pump

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.

Concept Drawing: This is only a concept drawing, not an engineered drawing. It is not intended to describe a complete system, nor any particular system. It is up to the

system designer to determine the necessary components for and configuration of the particular system being designed, including additional equipment, isolation relays

(for loads greater than the control’s specified output ratings), and any safety devices which in the judgement of the designer are appropriate, in order to properly size,

configure and design that system and to ensure compliance with building and safety code requirements.

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.

Boiler ∆T monitoring is available when using optional boiler outlet sensors (S3 to S6) & boiler inlet sensor (S2).

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ENABLE (1) = AUTO

CONDENSE (1) = NO

Boil TYPE (1) = 2STG

ENABLE (2) = AUTO

CONDENSE (2) = NO

Boil TYPE (2) = 2STG

ENABLE (3) = AUTO

CONDENSE (3) = NO

Boil TYPE (3) = 2STG

ENABLE (4) = AUTO

CONDENSE (4) = NO

Boil TYPE (4) = 2STG

Essential Source (#) Settings:

APP MODE = DDHW

AUX RELAY = DHWR

Essential System Settings:

Legend

DIP Settings:

External Flow Proof / Off

External C.A. Proof / Off

Off / Exercise

Setback / Off