Proven, Reliable Temperature Control

Many Flexible Versions to Meet Your Application Needs

Panels Can be Used with Staged Gas, Oil or Electric Heat

Modulating Gas, Hot Water or Steam Heat and Direct Expansion or Modulating Chilled Water Cooling

Control up to 3 On-Off Heat or Cool Stages or up to 10 On-Off Heat and/or Cool Stages Using W975 Satellite Sequencers

Modulating Dc Current Signal Controls Economizer Heating or Cooling Valve Motors

T7067 Dual Set Point Thermostat/Transmitter Located in Controlled Space Provides Heating and Cooling Input Signal Based on Space Demand

C7046A Sensor Located in Discharge Air Duct Provides Heating/Cooling Anticipation and Economizer Modulating Low Limit Signal

System Cycles All Stages Off on Power Interruption

When Power is Restored, System Sequences Required Stages on with Timed Inter-Stage Delay

Secondary Mid-point Ground

Small size and lightweight

Adapts to multiple baseplates  making it the most versatile unit on the market. It will also fit on many other vendors transformer baseplates

20 kV peak rating guarantees quick and efficient ignition

vacuum encapsulation process using a synthetic resin provides resistance to moisture and excellent heat dissipation and electrical insulation

Case material is a high-temperature thermoplastic that provides high impact strength and scratch resistance, and is impenetrable to most chemicals

Case design has breakout sections at the rear and side for lead wire exit and a hood to neatly cover and protect these wires

On flame failure, the light sensitive cadmium sulfide cell, in conjunction with flame sensing circuitry, causes the Protectorelay® control to shutdown the main oil burner

Glass-to-metal hermetic seal in plug-in cell prevents deterioration by humidity, soot or oil fumes

Replaceable CAD Cell

Tri-color visual indication of detector Pilot, Trouble and Alarm conditions

Lever-operated quick-connect "No-Tools" four-position terminal block

Port for plugging in the optional strobe assembly

Key-operated detector Test and Reset functions

Made in USA

Tri-Color Visual Indication of Detector Pilot, Trouble and Alarm Conditions

Lever-Operated Quick-Connect No-Tools 4-Position Terminal Block

Port for Plugging in the Optional Strobe Assembly

Key-Operated Detector Test and Reset Functions

Made in USA

Made in USA

Made in USA

Flashing LED on detector head indicates normal operation

Magnet test capability (magnet included)

More wiring space than competitive models

Footprint allows easy retrofit in many applications without additional drilling

Duct wall gaskets on back of enclosure are pre-installed

Compatible with the WP-2000 weatherproof enclosure

Reset switch is also an alarm test switch - competitive models require a magnet or cover removal to test at unit

Unit includes green pilot and red alarm visual indicators

External mounting tabs do not require cover removal to install

Colored cover gasket indicates proper cover seal

Compact, lightweight size means easy handling, lower shipping costs

Large terminal connection screws

Standard interchangeable "plug-in" UL268 photoelectric or ionization heads

Advanced detector head design yields internal dust filtering

No additional screens or filters to clean

Compatible with building automation and fire alarm systems

Ionization and Photoelectric versions available

Complete wiring details permanently attached to unit

Made in USA

Simplified installations with multi-speed fans, inaccessible air handlers, fan motors with voltage or phase different from controlled equipment

Eliminated wiring to system fan

Polyester film sail mounted on a micro switch snap switch

Removable spring counterbalances sail to allow mounting in either vertical (up or down) or horizontal air flow

Top and bottom conduit knockouts for wiring convenience

Low air velocity switch operation makes at 250 fpm and breaks at 75 fpm

Models with setpoint adjustment

Models with occupied/unoccupied override (bypass) with LED

Models with 3-position (auto/0/1) or 5-position (auto/0/1/2/3 speed) fan switch

LONWORKS network jack on all models except the TR21 and TR21-A models

Solid State Thermistor Element Provides Accurate Sensing of Temperature Changes