{"product_id":"honeywell-q7800a1005-7800-series-wiring-subbase","title":"Honeywell Q7800A1005 7800 Series Wiring Subbase","description":"\u003cp\u003eThe \u003cstrong\u003eHoneywell Q7800A1005\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eQ7800A1005\/B\u003c\/strong\u003e Universal Wiring Subbase, operates as a dedicated hardware component for surface mounting and external electrical terminal interface execution within 7800 Series burner control platforms.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cp\u003eThe 7800 Series wiring subbases utilize structural suffix designators to specify physical configuration and terminal assembly layout:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ7800A\u003c\/strong\u003e: Universal wiring subbase designed for panel mounting with accessible terminal connections.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ7800B\u003c\/strong\u003e: Internal cabinet subbase structure for specialized enclosure integrations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuffix \/B\u003c\/strong\u003e: Designates the secondary revision release indicating physical material validation and compliance updates without altering terminal assignments or mechanical footprint.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eQ7800A1005 (Ordering Part: Q7800A1005\/B)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eHoneywell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.43 lbs (0.65 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e127 mm x 127 mm x 38 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-40 deg C to +60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003ePassive wiring interface (0 W internal load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal Count\u003c\/td\u003e\n\u003ctd\u003e22 knife-blade terminals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Orientation\u003c\/td\u003e\n\u003ctd\u003eWall or panel mount (2-sided accessibility)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Rating\u003c\/td\u003e\n\u003ctd\u003e120 VAC \/ 240 VAC (50\/60 Hz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eBackplane Communication \u0026amp; I\/O Density Scaling\u003c\/h3\u003e\n\u003cp\u003eThe subbase acts as the structural interface for 7800 Series modules, facilitating deterministic signal routing and physical backplane interconnection between line-voltage field sensors, flame detectors, and the main control module. The 22-terminal layout enforces high I\/O density scaling within a compact footprint, allowing dual-sided wiring access to separate line-voltage ignition circuits from low-voltage flame signal runs. Integrated terminal barriers prevent physical cross-shorting and maintain dielectric integrity during high-voltage ignition transients up to 10 kV.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Can the Q7800A1005 subbase be wired and tested before installing the 7800 Series burner control module?\u003c\/p\u003e\n\u003cp\u003eA: Yes. The subbase features passive knife-blade contact terminals that allow full field wiring, continuity checks, and line-voltage validation prior to plugging in the active relay module or purger controls.\u003c\/p\u003e\n\u003cp\u003eQ: What screw torque specification is required for the 22 field terminals?\u003c\/p\u003e\n\u003cp\u003eA: Field wiring screws must be tightened to a torque of 0.8 Nm to 1.1 Nm (7 to 10 lb-in) to ensure solid low-resistance contact and prevent thermal hot spots during high-current burner sequence operations.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Surface Setup\u003c\/strong\u003e: Secure the subbase to a flat, grounded vertical panel using four No. 6 pan-head screws through the pre-cast corner mounting slots.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring Separation\u003c\/strong\u003e: Route high-voltage ignition and motor wires through separate conduit entries away from low-voltage flame detector leads to mitigate electromagnetic interference (EMI).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConductor Gauge\u003c\/strong\u003e: Use copper conductors rated for a minimum of 90 deg C. Terminal clamps accept single or dual 14 AWG to 18 AWG solid or stranded wire runs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShield Grounding\u003c\/strong\u003e: Connect all flame signal cable shields to a single grounding point at the subbase chassis earth terminal. Do not ground the shield at the sensor head end to prevent ground loop currents.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":67653346591029,"sku":"Q7800A1005","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/Q7800A1005.png?v=1791428504","url":"https:\/\/www.5gplc.com\/products\/honeywell-q7800a1005-7800-series-wiring-subbase","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}