{"product_id":"johnson-controls-p-3800-1-thermostat","title":"Johnson Controls P-3800-1 Reset Volume Controller with Direct Acting Thermostat (8 PSIG)","description":"\u003cp\u003eThe \u003cstrong\u003eJohnson Controls P-3800-1 Reset Volume Controller with Direct Acting Thermostat (8 PSIG)\u003c\/strong\u003e is a Johnson Controls thermostat for HVAC repair and replacement work. Use it when the part number \u003cstrong\u003eP-3800-1\u003c\/strong\u003e and the listed specifications match the equipment being serviced.\u003c\/p\u003e\n\u003cp\u003eThe P-3800 Reset Volume Controller is a pressure independent, submaster device designed to regulate the flow of air in Variable Air Volume (VAV) boxes. The P-3800 controls the output volume, between adjustable minimum and maximum set points, in response to a reset signal from a thermostat or some other master controller. Two models of the P-3800 are available to satisfy all VAV\/thermostat configurations, in both cooling and heating applications. In addition, the design of the P-3800 provides accurate air volume control, even down to a velocity pressure as low as 0.01 in. WG (2.5 Pa), despite the varying supply pressures found in many…\u003c\/p\u003e\n\u003ch3\u003eKey Specs\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Thermostat\u003c\/li\u003e\u003c\/ul\u003e\n\n\u003ch3\u003eExpert Verdict\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eReviewed by the SuperArbor Pro Desk:\u003c\/strong\u003e choose this part when the existing component label and unit documentation match P-3800-1 and the spec set above. It is best suited for targeted HVAC service repairs where exact fitment matters more than broad universal compatibility.\u003c\/p\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\u003ch4\u003eWhat is the Johnson Controls P-3800-1 used for?\u003c\/h4\u003e\u003cp\u003eIt is a thermostat for compatible Johnson Controls HVAC equipment. Match the part number P-3800-1 and the equipment service literature before ordering or installing.\u003c\/p\u003e\u003ch4\u003eWhich specs should I verify before purchase?\u003c\/h4\u003e\u003cp\u003eVerify the spec set shown for this part: Product Type: Thermostat. The replacement should match the existing component and the unit documentation.\u003c\/p\u003e\u003ch4\u003eHow do I confirm this is the right replacement?\u003c\/h4\u003e\u003cp\u003eCompare the part number P-3800-1, the thermostat description, and any unit model references with the original component and the service manual.\u003c\/p\u003e\u003ch4\u003eIs this an OEM-style replacement part?\u003c\/h4\u003e\u003cp\u003eUse it as a direct replacement only when Johnson Controls documentation lists P-3800-1 or an approved equivalent for the unit being serviced.\u003c\/p\u003e\u003ch4\u003eWho should install this HVAC component?\u003c\/h4\u003e\u003cp\u003eA qualified HVAC technician should install and test the thermostat. Disconnect power first, follow lockout procedures, and confirm safe operation after replacement.\u003c\/p\u003e\n\n\u003ch3\u003eSafety and Installation Notes\u003c\/h3\u003e\n\u003cp\u003eDisconnect power before service. HVAC electrical and combustion-related components should be installed and tested by a qualified technician. After installation, confirm wiring, mounting, airflow or fluid routing as applicable, and normal system operation.\u003c\/p\u003e","brand":"Johnson Controls","offers":[{"title":"Default Title","offer_id":53097396109679,"sku":"P-3800-1","price":364.24,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0830\/3499\/7051\/files\/p-3800-2-1.jpg?v=1781007234","url":"https:\/\/superarbor.io\/products\/johnson-controls-p-3800-1-thermostat","provider":"Super Arbor","version":"1.0","type":"link"}