Description

DISCOUNTINUED.

Equal run time rotation, automatic boiler differential
DHW pump operation, DHW priority (optional)
Test sequence to ensure proper component operation
Exercising, powered system pump output
Optional boiler pump(s) operation, quick setup for easy installation and programming of control
Outdoor temperature reset, warm weather shut down
Advanced settings to fine-tune building requirements
Control up to 4 on-off boilers, primary pump sequencing (optional)
User comfort adjustment to increase or decrease building space temperature

Agency Approvals – CSA C US, meets class B: ICES & FCC Part 15
Ambient Conditions – Indoor use only, 32 to 122 degrees F (0 to 50 degrees C), RH less than or equal to 90 percent Non-condensing
Control Type – Microprocessor control, this is not a safety (limit) control
Demand – 20 to 260 V (ac) 2 VA
Dimensions – 6-5/8″ H x 7-9/16″ W x 2-13/16″ D (170 x 193 x 72 mm)
Enclosure Material – Blue PVC plastic
Enclosure NEMA Rating – NEMA 1
Hydronic – HVAC Control Type – Boiler Control
Power Supply – 115 V (ac) plus / minus 10 percent, 60 Hz, 7 VA, 1150 VA max
Relay – 230 V (ac) 5 A, 1/3 hp
Sensor – NTC thermistor, 10 k ohms at 77 degrees F (25 degrees C plus / minus 0.2 degrees C) Beta=3892

There are no reviews yet.

Be the first to review “Tekmar 274 Control – One tN4 – Four Stage Boiler & Domestic Hot Water / Setpoint”