{"product_id":"carrier-48tj660007-heat-exchanger","title":"Carrier 48TJ660007 Heat Exchanger","description":"\u003cp\u003eThe \u003cstrong\u003eCarrier 48TJ660007 Heat Exchanger with Gasket Kit\u003c\/strong\u003e is a factory-authorized \u003cstrong\u003eOEM replacement heat exchanger\u003c\/strong\u003e for \u003cstrong\u003eCarrier\u003c\/strong\u003e, \u003cstrong\u003eBryant\u003c\/strong\u003e and \u003cstrong\u003ePayne\u003c\/strong\u003e gas-fired \u003cstrong\u003epackaged rooftop units\u003c\/strong\u003e. It is a \u003cstrong\u003e9-cell\u003c\/strong\u003e, \u003cstrong\u003enon-condensing\u003c\/strong\u003e assembly, so each of the nine cells lines up with one burner on the \u003cstrong\u003ecombustion side\u003c\/strong\u003e of the unit, and it ships with the \u003cstrong\u003egasket kit\u003c\/strong\u003e needed to seal the new assembly into the heat section. The previous service number was \u003cstrong\u003e50DK406560\u003c\/strong\u003e, and older paperwork may show the same part as \u003cstrong\u003e48TJ660-007\u003c\/strong\u003e. Any of those numbers leads to this assembly, which makes the \u003cstrong\u003e48TJ660007\u003c\/strong\u003e the one to order for a \u003cstrong\u003eheat exchanger replacement\u003c\/strong\u003e on a compatible rooftop.\u003c\/p\u003e\n\n\u003cp\u003ePublished application data ties the \u003cstrong\u003e48TJ660007\u003c\/strong\u003e to the \u003cstrong\u003e48TCFD\u003c\/strong\u003e and \u003cstrong\u003e48HJE\u003c\/strong\u003e rooftop series, including the \u003cstrong\u003e48HJE014\u003c\/strong\u003e size and models such as \u003cstrong\u003e48HJE014-550\u003c\/strong\u003e. Carrier builds a family of similar-looking heat exchangers, so the number on the unit's parts list matters. The \u003cstrong\u003e48TJ660006\u003c\/strong\u003e (which replaces \u003cstrong\u003e50DK406559\u003c\/strong\u003e and is listed with a baffle and gasket kit), the \u003cstrong\u003e48TJ660005\u003c\/strong\u003e and the \u003cstrong\u003e48TJ660010\u003c\/strong\u003e are separate heat exchanger numbers for other model series, not alternates for this one. Confirm the full \u003cstrong\u003emodel number\u003c\/strong\u003e, \u003cstrong\u003eserial number\u003c\/strong\u003e and \u003cstrong\u003eheating configuration\u003c\/strong\u003e before ordering, because production revisions can change which assembly a given unit uses.\u003c\/p\u003e\n\n\u003cp\u003eIn a gas-fired rooftop, the burners fire into the heat exchanger cells while the \u003cstrong\u003edraft inducer\u003c\/strong\u003e pulls the hot \u003cstrong\u003eflue gases\u003c\/strong\u003e through each cell and out the vent. The \u003cstrong\u003esupply blower\u003c\/strong\u003e pushes air from the building across the outside of the cells, and that air picks up the heat. The two gas paths must stay completely separate. When thermal cycling or corrosion cracks a cell, flue gas can leak into the supply air stream and the flame can be pushed out of its normal pattern. Typical symptoms are \u003cstrong\u003eflame rollout\u003c\/strong\u003e, a flame that distorts or lifts when the blower starts, repeated \u003cstrong\u003erollout switch\u003c\/strong\u003e trips, soot on the burners, and \u003cstrong\u003ecarbon monoxide\u003c\/strong\u003e in the supply air. Before condemning the exchanger, confirm the \u003cstrong\u003einducer\u003c\/strong\u003e draft, \u003cstrong\u003epressure switch\u003c\/strong\u003e, flue passages, burner cleanliness, \u003cstrong\u003egas manifold pressure\u003c\/strong\u003e and airflow are all correct, since restricted airflow from a dirty filter or a slow blower can overheat and crack cells. After installation, check that every gasket is seated, the burners align with the cell openings, and run a \u003cstrong\u003ecombustion analysis\u003c\/strong\u003e and \u003cstrong\u003etemperature rise\u003c\/strong\u003e check against the unit's nameplate.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eKey Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDirect OEM fit:\u003c\/strong\u003e Built to the factory \u003cstrong\u003eCarrier\u003c\/strong\u003e configuration as the replacement for \u003cstrong\u003e50DK406560\u003c\/strong\u003e, so the cell layout, mounting and burner alignment match the original on compatible \u003cstrong\u003erooftop units\u003c\/strong\u003e.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eGasket kit included:\u003c\/strong\u003e The supplied \u003cstrong\u003egaskets\u003c\/strong\u003e seal the new assembly at the connections that carry \u003cstrong\u003eflue gas\u003c\/strong\u003e, so there is no need to chase down separate seals mid-job.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003e9-cell configuration:\u003c\/strong\u003e The \u003cstrong\u003e9-cell\u003c\/strong\u003e, \u003cstrong\u003enon-condensing\u003c\/strong\u003e design restores the original \u003cstrong\u003eheat transfer\u003c\/strong\u003e surface and keeps the \u003cstrong\u003eburner-to-cell\u003c\/strong\u003e arrangement the unit was built around.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eEasy to cross-check:\u003c\/strong\u003e Findable under \u003cstrong\u003e48TJ660007\u003c\/strong\u003e, \u003cstrong\u003e48TJ660-007\u003c\/strong\u003e and \u003cstrong\u003e50DK406560\u003c\/strong\u003e, which helps when the unit's parts list or an older invoice shows a different designation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eCommon Questions\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eWill the Carrier 48TJ660007 fit my rooftop unit?\u003c\/strong\u003e It is published for the \u003cstrong\u003e48TCFD\u003c\/strong\u003e and \u003cstrong\u003e48HJE\u003c\/strong\u003e series, including \u003cstrong\u003e48HJE014\u003c\/strong\u003e models, but fit comes down to the complete \u003cstrong\u003emodel and serial number\u003c\/strong\u003e and the unit's heating configuration. Match the number on the parts list before ordering.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eWhat does the 48TJ660007 replace?\u003c\/strong\u003e It replaces \u003cstrong\u003e50DK406560\u003c\/strong\u003e, and the older hyphenated listing \u003cstrong\u003e48TJ660-007\u003c\/strong\u003e points to the same assembly. It comes with a \u003cstrong\u003egasket kit\u003c\/strong\u003e, and fresh gaskets should go in at every joint that was opened.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHow can I tell the heat exchanger is bad and not another part?\u003c\/strong\u003e Look for cracks or burn-through with a mirror or inspection camera, watch the flame while the \u003cstrong\u003esupply blower\u003c\/strong\u003e starts, and take a \u003cstrong\u003ecarbon monoxide\u003c\/strong\u003e reading in the supply air. Rule out the \u003cstrong\u003edraft inducer\u003c\/strong\u003e, \u003cstrong\u003epressure switch\u003c\/strong\u003e, dirty burners and low airflow first. A confirmed crack means the unit should stay off until the \u003cstrong\u003eheat exchanger\u003c\/strong\u003e is replaced.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 style=\"margin-top: 0in;\"\u003e\n\u003cstrong\u003e\u003cspan style=\"font-family: 'Segoe UI',sans-serif; color: #ff2a00;\"\u003eThis item is not eligible for free shipping and must be shipped via trucking. Please contact us for a freight quote.\u003c\/span\u003e\u003c\/strong\u003e\u003cspan style=\"font-size: 18.0pt; font-family: 'Segoe UI',sans-serif; color: #1f2124;\"\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\n\u003cp\u003eDisclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"Default Title","offer_id":67651154837682,"sku":"48TJ660007","price":2454.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1838\/2375\/files\/Image_022f6d47-e8fe-4cf4-a0f5-281d6c8bbb32.png?v=1791396332","url":"https:\/\/www.gsistore.com\/products\/carrier-48tj660007-heat-exchanger","provider":"GSIstore","version":"1.0","type":"link"}