The electrical contacts of the switch are closed upon sensing positive air pressure generated by the blower. Tjernlund Products inception dates back to 1938 when Emil Tjernlund and his son Robert started designing and manufacturing oil fired forced air furnaces. Sold by VIVOSUN and ships from Amazon Fulfillment. The switching setpoint is adjusted by means of a knob mounted under the main cover. You just need to use it as a switch on the hot wire (aka line) which is normally the black wire, just like you would for a light switch. Ambient temperature -20° to +85°C. TPI RH3A Series RH Adjustable Air Flow/Differential Pressure Switch Control, 0.05" - 12" WC, Compression Connection, Tjernlund PS1503P Plug-in Air Pressure Activation Switch for Duct Fans in Central Heating and Air Conditioning Systems, OEM Upgraded Replacement for Goodman Furnace Vent Air Pressure Switch B13701-26, Suncourt DuctStat Temperature Sensitive Switch, Plug in or Inline Thermostat, OEM Upgraded Replacement for Goodman Furnace Vent Air Pressure Switch B13701-42. Think of it as a door bell button pushed by air pressure. The Tjernlund Duct Airstat senses positive pressure in a forced air heating and/or cooling system. If furnace has central air-conditioning, care must be taken so as not to drill into the cooling coil when mounting the Duct Airstat on the furnace plenum.3. When used on a zone control system, the supply air static pressure increases as various zone dampers close down. WC), SPDT, Air Sensing Switch, HVAC/General Purpose Type, 0.02 to 0.3 Differential (In. With over 1.8 million parts in stock, Kele makes it easy to avoid project delays. Senses positive pressure from air handler blower to activate Duct Booster fans. Fan runs for 10 minutes when pressure is sensed in the duct line then shuts off and turns on again as needed. Air Differential Pressure Switch These Air DP Switches are ideal for verifying the correct operation of ventilation systems by monitoring the pressure differential created by air movement and can be used to provide a BS6173:2009 and IGEM/UP/19 compliant interlock when interfaced with any GasGuard system. Tjernlund Duct Airstat senses positive pressure in a forced air heating and/or cooling system. A fixed 'fan-on' setpoint (+ .05 + .02” W.C.). Mophorn Inline Duct Fan 3 Inch Mixed Flow Fan HF-75S Inline Exhaust Fan for Home Ve... Asept-Air LIFE CELL 2550 5-Stage Ultimate HEPA & CARBON Air Purifier. 2 App. The PS1503 Duct Airstat switch is designed to sense the positive pressure increase in a supply plenum or duct when an air han-dler or furnace blower is in operation. WC), SPDT, Air Sensing Switch, Gold Contact Type, 0.02 to 0.01 Differential (In. We do not have any recommendations at this time. All wiring must comply with applicable codes and ordinances. Your question might be answered by sellers, manufacturers, or customers who bought this product. Supply low range differential air pressure sensor transducer,digital display,analog 10VDC,4-20mA,RS485 Modbus,also for fan duct,furnace chamber,hennery. Single pole, single throw, snap-acting switch. Air Flow Switch is designed to monitor air flow in ducts. Works year-round for both heating and A/C. DIFFERENTIAL, GAUGE PRESSURE OR VACUUM SWITCH ; Pressure range from 0.15" W.C. TO 22" W.C. Up to 10 Amp, 480 VAC Ratings Weather tight or panel mount housing options Custom Set Point and Features Optional foot mount, fittings and port orientation UL and CSA approval options i.e hot (black) from fan to Normally Open on switch and Common on switch to power on (receptacle hot black) if you’re tieing to a receptacle for power. Self-Sealing Factory Mounted Sampling Tube, SPST, N/O, Snap Action Contacts, Non Adjustable. You can test your switch with a multimeter. This shopping feature will continue to load items when the Enter key is pressed. SDS Document Not Found. Remove control and drill or punch two 1/8” holes for mounting screws. Next. Drill a 11/32" hole in the duct or plenum to permit the insertion the pressure probe. Find answers in product info, Q&As, reviews. Kele carries duct static pressure sensors and pressure accessories to fit your specifications. If a duct pressure switch is constantly activating, it could indicate an issue with your HVAC system or ductwork. Duct air pressure switch. Summary. Bend each bare lead around its respective terminal in a clockwise direction and tighten terminal screw. The Series 1831 combines small size with 4% set point repeatability. An air switch senses positive, negative or differential air pressure and actuates an internal switch. The Tjernlund Duct Airstat senses positive pressure in a forced air heating and/or cooling system. Try locating pressure probe at several points. You can edit your question or post anyway. Air Flow Switch, SPDT 8A@250VAC.The duct air flow switches is a kind of heating,cooling and air conditioning equipment,which is used to control and monitor air,non … For mounting screws work if you install it upside down had to get a new one.02” )... Entering your model number accessories to fit your specifications our Auto draft Inducers were developed to draft. Emil Tjernlund and his son Robert started designing and manufacturing oil fired forced air heating cooling... 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