{"product_id":"braemar-thm-530-x-gas-ducted-heater-air-pressure-switch-sy640709","title":"Braemar THM 530 \u0026 X Gas Ducted Heater Air Pressure Switch","description":"\u003cdiv style=\"text-align: left;\"\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003eThis Braemar THM 530 \u0026amp; X gas ducted heater air pressure switch is a direct replacement part (PN. 640709) crucial for maintaining safe and efficient operation of your ducted heating system. It’s what tells the heater that the fan is running and air is flowing, preventing burner lockout or worse.\u003c\/p\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003eIn the peak of an Aussie winter, a faulty pressure switch can shut down a whole system, leaving homeowners cold. Getting the right genuine spare minimises callback headaches for techs.\u003c\/p\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eBest For\u003c\/h2\u003e\n\u003cul style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003e\n\u003cli\u003eHVAC technicians and gas fitters\u003c\/li\u003e\n\u003cli\u003eLicensed professionals undertaking repairs or servicing on Braemar THM 530 and THM X gas ducted heaters\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eCompatibility\u003c\/h2\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003eThis air pressure switch (PN. 640709, pink label) is specifically designed for Braemar THM 530 and THM X series gas ducted heaters. It's factory-set to activate at 170Pa.\u003c\/p\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003eIf you're running a different model, check fittings and specs before ordering.\u003c\/p\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eFeatures\u003c\/h2\u003e\n\u003cul style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003e\n\u003cli\u003eGenuine Braemar part (PN. 640709) for reliable performance.\u003c\/li\u003e\n\u003cli\u003eDirect replacement for Braemar THM 530 and THM X series gas ducted heaters.\u003c\/li\u003e\n\u003cli\u003eFixed set point of 170Pa for accurate airflow detection.\u003c\/li\u003e\n\u003cli\u003eIdentifiable pink label for quick verification on the job.\u003c\/li\u003e\n\u003cli\u003eEnsures proper airflow detection for burner ignition and safety lockout.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 16px; margin-bottom: 20px;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"color: #007acc; border: 1px solid #e0e0e0; padding: 10px; text-align: left; background-color: #f5f5f5;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"color: #007acc; border: 1px solid #e0e0e0; padding: 10px; text-align: left; background-color: #f5f5f5;\"\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003ePart Number\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003e640709\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003eActivation Pressure\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003e170Pa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003eLabel Colour\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003ePink\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003eCompatible Models\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003eBraemar THM 530, Braemar THM X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003e1.00 KGS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003e\u003cli\u003e1 x Braemar THM 530 \u0026amp; X Gas Ducted Heater Air Pressure Switch (PN. 640709, SY640709)\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eUsing It on the Job\u003c\/h2\u003e\n\u003col style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003e\n\u003cli\u003eAlways isolate power to the ducted heater at the main switchboard and perform lockout\/tagout procedures before starting any work.\u003c\/li\u003e\n\u003cli\u003eClearly identify the existing pressure switch by its part number and label colour to ensure it matches this replacement (PN. 640709, pink label).\u003c\/li\u003e\n\u003cli\u003eDisconnect the old switch, carefully noting hose connections and wiring terminals.\u003c\/li\u003e\n\u003cli\u003eInstall the new genuine Braemar switch, reconnecting hoses and electrical terminals securely. Double-check all connections.\u003c\/li\u003e\n\u003cli\u003eRestore power and perform a full system diagnostic cycle to confirm correct operation of the fan and burner ignition.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eLimitations \u0026amp; Safety Notes\u003c\/h2\u003e\n\u003cul style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003e\n\u003cli\u003eInstallation of gas, water, and electrical parts must be performed by a qualified, licensed professional.\u003c\/li\u003e\n\u003cli\u003eEnsure the part matches your specific Braemar heater model (THM 530 or THM X) to prevent compatibility issues.\u003c\/li\u003e\n\u003cli\u003eThis item is non-refundable once opened from its tamper-evident packaging.\u003c\/li\u003e\n\u003cli\u003eAlways refer to the manufacturer's service manual for specific installation and testing procedures for Braemar THM 530 and THM X models.\u003c\/li\u003e\n\u003cli\u003eFollow all Australian standards and Safe Work guidance during installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cblockquote style=\"border-left: 4px solid #007acc; background-color: #f9f9f9; font-style: italic; padding: 15px; margin: 20px 0;\"\u003eBefore you even order this, do a quick visual check on the original switch. Sometimes it's just a blocked pressure hose or a dirty fan causing the lockout, not the switch itself. Clean up those hoses and check for obstructions first. It can save a lot of hassle.\u003c\/blockquote\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003ePair With\u003c\/h2\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003ePair with other Braemar spare parts or a quality multimeter for fault finding and diagnostics on ducted heating systems.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- Automated FAQ Schema --\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What Braemar models is this pressure switch compatible with?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"This Braemar air pressure switch (PN. 640709) is specifically designed for the Braemar THM 530 and THM X series gas ducted heaters.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the activation pressure for this switch?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The switch is a 100% 170Pa pressure switch, meaning it's factory-set to activate when it detects 170 Pascals of air pressure.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is professional installation required for this part?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes, installation of gas and electrical components like this pressure switch must be carried out by a qualified, licensed professional to ensure safety and maintain warranty validity.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"Braemar","offers":[{"title":"Default Title","offer_id":43660725092411,"sku":"SY640709","price":124.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0316\/7787\/4235\/files\/truck-icon_633bce07-673b-4174-b7db-5667d8952084.png?v=1781670439","url":"https:\/\/www.hvacshop.com.au\/products\/braemar-thm-530-x-gas-ducted-heater-air-pressure-switch-sy640709","provider":"HVAC Supply Shop","version":"1.0","type":"link"}