{"product_id":"siemens-lmo44-255c2-controller","title":"SIEMENS LMO44.255C2 Oil Burner Control 2-Stage 230VAC 5s Safety Time","description":"\u003cstyle\u003e.nxs-industrial-product-page{--industrial-navy:#082f49;--industrial-blue:#0b4f7c;--industrial-blue-2:#0f6ea8;--industrial-blue-3:#1784c1;--industrial-cyan:#38bdf8;--steel-blue:#dcebf5;--steel-blue-2:#edf6fb;--steel-line:#c9dce9;--surface:#ffffff;--surface-soft:#f7fbfe;--text-main:#173042;--text-muted:#5e7382;--shadow-soft:0 10px 30px rgba(8,47,73,0.08);--shadow-hover:0 16px 36px rgba(8,79,124,0.15);--radius-lg:14px;--radius-md:10px;}.nxs-industrial-product-page,.nxs-industrial-product-page *{margin:0;padding:0;box-sizing:border-box;font-family:Arial,Helvetica,sans-serif;}.nxs-industrial-product-page{background-color:#f3f8fb;background-image:linear-gradient(180deg,#eef6fb 0,#f7fafc 320px,#eef3f7 100%),linear-gradient(rgba(15,110,168,0.025) 1px,transparent 1px),linear-gradient(90deg,rgba(15,110,168,0.025) 1px,transparent 1px);background-size:auto,34px 34px,34px 34px;position:relative;isolation:isolate;overflow:hidden;color:var(--text-main);line-height:1.75;-webkit-font-smoothing:antialiased;}.nxs-industrial-product-page .container{width:92%;max-width:1120px;margin:0 auto;padding-bottom:34px;}.nxs-industrial-product-page main{padding-top:8px;}.nxs-industrial-product-page .section{position:relative;overflow:hidden;background:var(--surface);margin:22px auto;padding:36px 30px;border:1px solid var(--steel-line);border-radius:var(--radius-lg);box-shadow:var(--shadow-soft);}.nxs-industrial-product-page .section::before{content:'';position:absolute;left:0;top:0;width:5px;height:100%;background:linear-gradient(180deg,var(--industrial-blue-3),var(--industrial-blue));}.nxs-industrial-product-page .section h2{position:relative;display:inline-flex;align-items:center;gap:10px;font-size:25px;line-height:1.3;color:var(--industrial-navy);margin-bottom:24px;letter-spacing:-0.2px;}.nxs-industrial-product-page .section h2::before{content:'';width:28px;height:4px;flex:0 0 28px;border-radius:999px;background:linear-gradient(90deg,var(--industrial-blue-2),var(--industrial-cyan));}.nxs-industrial-product-page .section p{color:var(--text-main);}.nxs-industrial-product-page .spec-table{width:100%;border-collapse:separate;border-spacing:0;overflow:hidden;border:1px solid var(--steel-line);border-radius:var(--radius-md);background:#fff;}.nxs-industrial-product-page .spec-table tr{transition:background-color 0.2s ease,transform 0.2s ease;}.nxs-industrial-product-page .spec-table tr:nth-child(even){background:#f7fbfe;}.nxs-industrial-product-page .spec-table tr:hover.nxs-industrial-product-page .spec-table td{padding:13px 16px;border-bottom:1px solid #dbe7ef;vertical-align:top;color:#294658;}.nxs-industrial-product-page .spec-table tr:last-child td{border-bottom:none;}.nxs-industrial-product-page .spec-table td:first-child{position:relative;width:38%;font-weight:700;color:#0b456d;background:rgba(220,235,245,0.42);}.nxs-industrial-product-page .spec-table td:first-child::after{content:'';position:absolute;top:22%;right:0;width:1px;height:56%;background:#c7dce9;}.nxs-industrial-product-page .features{display:grid;grid-template-columns:repeat(auto-fit,minmax(235px,1fr));gap:18px;}.nxs-industrial-product-page .card{position:relative;overflow:hidden;min-height:100%;background:linear-gradient(180deg,#ffffff 0%,#f4f9fc 100%);padding:22px 20px 21px;border:1px solid #d5e4ee;border-radius:var(--radius-md);box-shadow:0 6px 18px rgba(8,47,73,0.055);transition:transform 0.22s ease,box-shadow 0.22s ease,border-color 0.22s ease;}.nxs-industrial-product-page .card::before{content:'';position:absolute;left:0;top:0;width:100%;height:4px;background:linear-gradient(90deg,var(--industrial-blue),var(--industrial-cyan));}.nxs-industrial-product-page .card::after{content:'';position:absolute;width:74px;height:74px;right:-28px;bottom:-30px;border:1px solid rgba(15,110,168,0.12);border-radius:50%;transition:transform 0.22s ease;}.nxs-industrial-product-page .card:hover{transform:translateY(-4px);border-color:#a9cadf;box-shadow:var(--shadow-hover);}.nxs-industrial-product-page .card:hover::after{transform:scale(1.25);}.nxs-industrial-product-page .card h3{position:relative;color:var(--industrial-blue);font-size:18px;line-height:1.35;margin-bottom:10px;padding-left:14px;}.nxs-industrial-product-page .card h3::before{content:'';position:absolute;left:0;top:0.25em;width:4px;height:1em;border-radius:4px;background:var(--industrial-blue-3);}.nxs-industrial-product-page .card p{color:#526a79;font-size:15px;}.nxs-industrial-product-page .section ul{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:11px 18px;padding-left:0;list-style:none;}.nxs-industrial-product-page .section li{position:relative;margin:0;padding:12px 14px 12px 38px;background:var(--surface-soft);border:1px solid #dbe8f0;border-radius:8px;color:#365264;}.nxs-industrial-product-page .section li::before{content:'';position:absolute;left:15px;top:50%;width:9px;height:9px;transform:translateY(-50%) rotate(45deg);background:var(--industrial-blue-2);box-shadow:0 0 0 4px rgba(15,110,168,0.1);}.nxs-industrial-product-page .section:nth-of-type(4) p{padding:18px 20px;background:linear-gradient(135deg,#edf7fc,#f9fcfe);border:1px solid #cfe4f1;border-left:4px solid var(--industrial-blue-2);border-radius:9px;color:#355267;}.nxs-industrial-product-page .section:last-of-type{counter-reset:faq;}.nxs-industrial-product-page .section:last-of-type \u003e p{position:relative;margin:0;padding:18px 18px 18px 54px;background:#f8fbfd;border:1px solid #d8e6ef;border-radius:9px;box-shadow:0 4px 12px rgba(8,47,73,0.035);transition:border-color 0.2s ease,background-color 0.2s ease;counter-increment:faq;}.nxs-industrial-product-page .section:last-of-type \u003e p:hover.nxs-industrial-product-page .section:last-of-type \u003e p::before{content:counter(faq,decimal-leading-zero);position:absolute;left:15px;top:17px;min-width:28px;height:28px;display:inline-flex;align-items:center;justify-content:center;border-radius:6px;background:var(--industrial-blue);color:#fff;font-size:11px;font-weight:700;letter-spacing:0.3px;box-shadow:0 5px 12px rgba(8,79,124,0.18);}.nxs-industrial-product-page .section:last-of-type \u003e p strong{display:inline-block;color:#0b456d;margin-bottom:5px;line-height:1.4;}.nxs-industrial-product-page .section:last-of-type \u003e br{display:block;content:'';margin:10px 0;}@media(max-width:760px){.nxs-industrial-product-page .container{width:100%;padding:0 12px 24px;}.nxs-industrial-product-page .section{padding:26px 17px 24px;margin:14px auto;border-radius:11px;}.nxs-industrial-product-page .section::before{width:4px;}.nxs-industrial-product-page .section h2{font-size:21px;margin-bottom:18px;}.nxs-industrial-product-page .section h2::before{width:20px;flex-basis:20px;}.nxs-industrial-product-page .spec-table{display:table;table-layout:fixed;}.nxs-industrial-product-page .spec-table td{padding:11px 9px;font-size:13px;line-height:1.55;overflow-wrap:anywhere;}.nxs-industrial-product-page .spec-table td:first-child{width:42%;}.nxs-industrial-product-page .features{grid-template-columns:1fr;gap:12px;}.nxs-industrial-product-page .card{padding:18px 17px;}.nxs-industrial-product-page .card:hover{transform:none;}.nxs-industrial-product-page .section ul{grid-template-columns:1fr;gap:9px;}.nxs-industrial-product-page .section li{padding:11px 12px 11px 36px;font-size:14px;}.nxs-industrial-product-page .section:last-of-type \u003e p{padding:16px 14px 16px 48px;font-size:14px;}.nxs-industrial-product-page .section:last-of-type \u003e p::before{left:12px;top:15px;min-width:26px;height:26px;font-size:10px;}}@media(prefers-reduced-motion:reduce){.nxs-industrial-product-page,.nxs-industrial-product-page *,.nxs-industrial-product-page *::before,.nxs-industrial-product-page *::after{transition:none !important;}}\u003c\/style\u003e\n\u003cdiv class=\"nxs-industrial-product-page\"\u003e\n\u003cdiv class=\"container\"\u003e\u003cmain\u003e\n\u003csection class=\"section\"\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable class=\"spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eSIEMENS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003eLMO44.255C2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Category\u003c\/td\u003e\n\u003ctd\u003eOil Burner Control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eLMO44\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBurner Type\u003c\/td\u003e\n\u003ctd\u003eForced-Draft Oil Burner\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperation\u003c\/td\u003e\n\u003ctd\u003eIntermittent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFuel Valve Stages\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eStationary Direct-Fired Air Heaters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMains Voltage\u003c\/td\u003e\n\u003ctd\u003eAC 230 V +10% \/ -15%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMains Frequency\u003c\/td\u003e\n\u003ctd\u003e50-60 Hz ±6%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e12 VA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExternal Primary Fuse\u003c\/td\u003e\n\u003ctd\u003e6.3 A Slow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlame Detectors\u003c\/td\u003e\n\u003ctd\u003eQRB \/ QRC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWaiting Time\u003c\/td\u003e\n\u003ctd\u003e2.5 s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrepurge Time\u003c\/td\u003e\n\u003ctd\u003e25 s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIgnition Safety Time\u003c\/td\u003e\n\u003ctd\u003e5 s Max.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePreignition Time\u003c\/td\u003e\n\u003ctd\u003e25 s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePostignition Time\u003c\/td\u003e\n\u003ctd\u003e5 s Max.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFuel Valve 2 Release Interval\u003c\/td\u003e\n\u003ctd\u003e5 s Min.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDegree of Protection\u003c\/td\u003e\n\u003ctd\u003eIP40, Ensured Through Mounting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/section\u003e\n\u003csection class=\"section\"\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cdiv class=\"features\"\u003e\n\u003carticle class=\"card\"\u003e\n\u003ch3\u003eTwo-Stage Oil Burner Control\u003c\/h3\u003e\n\u003cp\u003eThe LMO44.255C2 is a microcontroller-based control designed for startup, supervision and control of applicable two-stage forced-draft oil burners in intermittent operation.\u003c\/p\u003e\n\u003c\/article\u003e\n\u003carticle class=\"card\"\u003e\n\u003ch3\u003e230 VAC Supply\u003c\/h3\u003e\n\u003cp\u003eThe burner control operates from an AC 230 V supply with a documented tolerance of +10% \/ -15% and a mains frequency of 50-60 Hz ±6%.\u003c\/p\u003e\n\u003c\/article\u003e\n\u003carticle class=\"card\"\u003e\n\u003ch3\u003e5-Second Safety Time\u003c\/h3\u003e\n\u003cp\u003eThe LMO44.255C2 has a documented maximum ignition safety time of 5 seconds within its burner startup sequence.\u003c\/p\u003e\n\u003c\/article\u003e\n\u003carticle class=\"card\"\u003e\n\u003ch3\u003eQRB \/ QRC Flame Supervision\u003c\/h3\u003e\n\u003cp\u003eYellow-burning flames can be supervised using QRB photoresistive detectors, while QRC blue-flame detectors are used for applicable blue-burning flame applications.\u003c\/p\u003e\n\u003c\/article\u003e\n\u003carticle class=\"card\"\u003e\n\u003ch3\u003eDigital Control Sequence\u003c\/h3\u003e\n\u003cp\u003eMicrocontroller-based signal processing manages the defined startup, flame supervision, operating and shutdown sequence of the burner control.\u003c\/p\u003e\n\u003c\/article\u003e\n\u003carticle class=\"card\"\u003e\n\u003ch3\u003eOperational Diagnostics\u003c\/h3\u003e\n\u003cp\u003eThe LMO series incorporates status and fault indication functions to support burner operation monitoring and fault diagnostics.\u003c\/p\u003e\n\u003c\/article\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"section\"\u003e\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eStationary direct-fired air heaters\u003c\/li\u003e\n\u003cli\u003eTwo-stage forced-draft oil burners\u003c\/li\u003e\n\u003cli\u003eOil burner startup control\u003c\/li\u003e\n\u003cli\u003eBurner flame supervision systems\u003c\/li\u003e\n\u003cli\u003eAtomization oil burner systems\u003c\/li\u003e\n\u003cli\u003eIntermittent burner operation\u003c\/li\u003e\n\u003cli\u003eIndustrial combustion equipment\u003c\/li\u003e\n\u003cli\u003eBurner control panels\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection class=\"section\"\u003e\n\u003ch2\u003ePurchase Information\u003c\/h2\u003e\n\u003cp\u003eWe support online purchase of the SIEMENS LMO44.255C2 Oil Burner Control. If you need to make bulk purchases and inquire about other products, please contact our team to inform us of your purchase requirements. We will provide you with information such as quantity quotations, delivery dates, and transportation methods.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection class=\"section\"\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is SIEMENS LMO44.255C2?\u003c\/strong\u003e\u003cbr\u003eIt is a microcontroller-based oil burner control for startup, supervision and control of applicable forced-draft oil burners in intermittent operation.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eWhat supply voltage does LMO44.255C2 use?\u003c\/strong\u003e\u003cbr\u003eThe documented mains voltage is AC 230 V with a tolerance of +10% \/ -15%.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eWhat mains frequency is supported?\u003c\/strong\u003e\u003cbr\u003eThe documented mains frequency is 50-60 Hz ±6%.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eHow many fuel valve stages does LMO44.255C2 support?\u003c\/strong\u003e\u003cbr\u003eThe documented configuration provides two fuel valve stages.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the ignition safety time?\u003c\/strong\u003e\u003cbr\u003eThe maximum documented ignition safety time is 5 seconds.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the prepurge time?\u003c\/strong\u003e\u003cbr\u003eThe documented minimum prepurge time is 25 seconds.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eWhich flame detectors can be used?\u003c\/strong\u003e\u003cbr\u003eThe LMO44.255C2 supports applicable QRB photoresistive flame detectors and QRC blue-flame detectors.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the power consumption?\u003c\/strong\u003e\u003cbr\u003eThe documented power consumption is 12 VA.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the protection rating?\u003c\/strong\u003e\u003cbr\u003eThe burner control is specified as IP40, with the degree of protection to be ensured through mounting.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the operating temperature range?\u003c\/strong\u003e\u003cbr\u003eThe documented operating temperature range is -20 to +60 °C.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eCan LMO44.255C2 be considered for an existing burner system?\u003c\/strong\u003e\u003cbr\u003eIt can be considered after the exact model, burner type, fuel valve stages, 230 VAC supply, flame detector, control sequence, wiring and burner system requirements have been checked.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eWhat should be checked before ordering?\u003c\/strong\u003e\u003cbr\u003eCheck the complete LMO44.255C2 model number together with the two-stage burner requirement, AC 230 V supply, QRB or QRC flame detector, timing sequence, mounting arrangement and electrical connections before ordering.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c\/main\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"SIEMENS","offers":[{"title":"Default Title","offer_id":46550583410767,"sku":"GJL-SIEMENS-LMO44.255C2","price":60.51,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/7569\/2623\/files\/LMO44.255C2.jpg?v=1787991387","url":"https:\/\/yunshuotrade.com\/products\/siemens-lmo44-255c2-controller","provider":"yunshuotrade","version":"1.0","type":"link"}