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256 | Boiler Control - One Stage Boiler | Tekmar

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Overview

Details for 256

Boiler Control - One Stage Boiler

The Boiler Control 256 is designed to operate a single boiler using Outdoor Temperature Reset. It can be used in applications ranging from a single zone of baseboard to multiple zones of fan coils and baseboard. This control regulates a single heating water temperature through Outdoor Temperature Reset.

Features

Warm weather shut down
CSA C US certified (approved to applicable UL standards)
Test sequence
Setback input for night setback
Outdoor temperature reset
automatic boiler differential
Quick setup for easy installation and programming
Advanced settings to fine-tune building requirements

Specifications

Item Number	256
Brand	Tekmar
Category	Boiler / DHW Controls
Agency Approvals	CSA C US, meets class B: ICES & FCC Part 15
Ambient Conditions	Indoor use only, 32 to 104 degrees F (0 to 40 degrees C), RH less than or equal to 90 percent Non-condensing
Control Type	Microprocessor control, this is not a safety (limit) control
Demand	24 V (ac) 2 VA
Dimensions	4-3/4" H x 2-7/8" W x 7/8" D (120 x 74 x 22 mm)
Enclosure Material	White PVC plastic
Enclosure NEMA Rating	NEMA 1
Hydronic - HVAC Control Type	Boiler Control
Power Supply	24 V plus / minus 10 percent, 50/60 Hz, 3 VA, Class 2
Relay	240 V (ac) 5 A 1/6 hp
Sensor	NTC thermistor, 10 k ohms at 77 degrees F (25 degrees C plus / minus 0.2 degrees C) Beta=3892