The ISOTEX Evolution represents a new class of oil fired steam boilers — bringing large-system performance and efficiency within reach of smaller industrial operations. Designed for industries that demand precision, reliability, and minimal downtime, the Evolution combines premium European burner technology with ISOTEX’s 50-year manufacturing expertise.

As a complete factory-assembled, pre-commissioned solution — from burner to economiser to control panel — every Evolution unit is engineered for plug-and-play installation, dramatically reducing on-site erection time and costs.

With up to 95% thermal efficiency, automatic combustion management, and smart remote monitoring, the Evolution delivers outstanding fuel savings and operational intelligence for process-critical steam applications.

TECHNICAL SPECIFICATIONS

Capacity Range & Performance Data

Isotex Evolution oil fired steam boilers are available across five standard capacities, covering 2,000 to 8,000 kg/hr, with custom engineering available for specific process requirements.

*Efficiency 95% ±2% measured to BS 845 Part 1, Indirect Method. Custom capacities and higher-pressure designs available on request — contact our engineering team

FUEL OPTIONS

Oil Fuel Options & Flexibility

ISOTEX Evolution boilers are engineered with a premium European monobloc burner system offering full dual-fuel capability — switching seamlessly between gaseous and liquid fuels to ensure maximum operational continuity and cost optimization.

Primary Fuel Options

• Light Diesel Oil (LDO) — Light fuel oil at 10,200 kCal/kg; low-viscosity, direct atomization, no pre-heating required — primary liquid fuel for MS Series boilers
• Furnace Oil (FO) — Heavy fuel oil for high-capacity, cost-sensitive operations; requires pre-heating system and compatible atomizing burner configuration
• High Speed Diesel (HSD) — Premium distillate fuel with consistent calorific value; preferred for standby or intermittent operation
• Low Sulphur Heavy Stock (LSHS) — Refinery-grade heavy fuel with reduced Sulphur; suitable for large-capacity plants requiring emission compliance at lower fuel cost
• Dual Fuel — LDO / Natural Gas — Automatic changeover between LDO and natural gas; uninterrupted steam supply during gas curtailment — no manual intervention required
• Dual Fuel — FO / Natural Gas — Furnace oil primary with natural gas backup; lowest fuel cost with clean combustion flexibility

Advanced Monobloc Burner System

The Evolution incorporates the internationally renowned Riello (Italy) advanced electronic regulation monobloc burner — the world’s leading burner manufacturer — delivering exceptional combustion precision and reliability:

• Riello Italy oil burner — world’s largest burner manufacturer; proven atomization performance across LDO, HSD, and FO fuel grades
• Electronic modulating burner with digital BMS — automatic ignition, flame safeguard, and fuel valve safety interlock on every startup
• High turn-down ratio 1:5 — modulating oil valve eliminates on/off cycling; stable steam pressure across 20–100% load range
• Online O₂ trim with VSD combustion fan — real-time air-fuel optimization eliminates excess air losses at all load conditions
• Dual fuel changeover (GAS/LDO & GAS/FO) — automatic fuel switching with no manual intervention or burner head change required
• FO pre-heating system included where required — ensures correct viscosity for clean, complete atomization and minimal soot formation