Unilux Flexible Water Tube Boiler 12400 MBH Natural Gas 15 PSIG ZF1200LS 2020

OVERVIEW

Unilux Advanced Manufacturing Flexible Water Tube Boiler — Model ZF1200LS, Serial Number A3658, Year Built 2020. Low-pressure steam and hot water boiler rated at 15 PSIG steam / 30 PSIG water with 12,400 MBH maximum gas input and 10,620 MBH safety relief valve rating. Maximum water temperature 250°F. Heating surface 1,062 square feet. ASME certified flexible water tube design manufactured in Niskayuna, New York, USA. Natural gas fired with dual fuel capability per nameplate. Supply circuit 575V three-phase. Complete system includes Hurst Boiler feedwater package, dual Mitsubishi A700 series variable frequency drives, touchscreen PLC control panel with main disconnect, and full red-piped condensate/feedwater return system.

2020 manufacture — near-new condition. Flexible water tube design provides superior thermal efficiency, rapid response to load changes, and excellent durability in demanding commercial and industrial applications. Ideal for large commercial facilities, food and beverage processing, industrial plants, district heating, laundry operations, or any application requiring high-capacity low-pressure steam or hot water generation.

EQUIPMENT SPECIFICATIONS

Boiler Model Information:

• Manufacturer: Unilux Advanced Manufacturing, LLC
• Manufacturing Location: Niskayuna, New York, USA
• Product Line: Flexible Water Tube Boilers
• Model Number: ZF1200LS
• Serial Number: A3658
• Year Built: 2020
• Boiler Type: Flexible Water Tube
• Fuel Type: Natural Gas (Dual Fuel Capable per nameplate)
• ASME Certified: Yes

Performance Ratings:

• Maximum W.P. Steam: 15 PSIG
• Maximum W.P. Water: 30 PSIG
• Maximum Water Temperature: 250°F
• Safety Relief Valve Rating: 10,620 MBH
• Gas Input — Maximum: 12,400 MBH
• Gas Input — Minimum: 1,260 MBH
• Heating Surface: 1,062 SQFT
• Turndown Ratio: Approximately 10:1 (12,400 / 1,260 MBH)

Gas Train Specifications:

• Fuel: Natural Gas
• Max Manifold Pressure: 24.8" W.C.
• Regulator Inlet Pressure: 10 PSIG
• Fuel Oil: Not configured (blank on nameplate)

Electrical Specifications:

• Supply Circuit: 575V, 3-Phase, 60Hz, 6.8 Amps
• Control Circuit: 115V, 1-Phase, 60Hz, 4.20 Amps
• VFDs: (2) Mitsubishi A700 Series Variable Frequency Drives
• Control Panel: Touchscreen PLC with main rotary disconnect

Hurst Feedwater System:

• Manufacturer: Hurst Boiler and Welding Co., Inc., Coolidge, GA
• Diagram Number: 20000119
• Max VAC: 575V, 3PH, 60Hz
• Full Load Amps: 8.5
• Recommended Feeder Amps: 15
• Largest Motor Amps: 3.4
• Short Circuit Current Rating: AIC Symmetrical 5kA
• Max Voltage: 575VAC
• Transformer: 250VA (575V–120V), Class CC
• UL Listed: UL508A, E214073
• UL Listing Date: 03/23/2020

Clearances (W/LS — With Low Side):

• Top: 18" / 457mm
• Side: 18" / 457mm
• Rear: 18" / 457mm
• Front: 48" / 1,219mm
• Vent: 18" / 457mm
• Floor: Non-Combustible

Clearances (HS — High Side):

• Top: 48" / 1,219mm
• Side: 36" / 914mm
• Rear: 36" / 914mm
• Front: 96" / 2,438mm
• Vent: 36" / 914mm
• Floor: Non-Combustible

KEY FEATURES & BENEFITS

2020 Near-New Manufacture:

• 2020 year of manufacture
• Minimal service hours
• Like-new mechanical condition
• Current generation Unilux technology
• Modern controls and VFD package
• Full system ready for installation

Unilux Flexible Water Tube Design:

• Flexible water tube construction
• Superior thermal efficiency
• Rapid response to steam demand changes
• Excellent resistance to thermal shock
• ASME certified pressure vessel
• USA manufactured — Niskayuna, New York
• Proven Unilux engineering and quality

High-Capacity Natural Gas Operation:

• 12,400 MBH maximum gas input
• 1,260 MBH minimum firing rate
• Approximately 10:1 turndown ratio
• Wide modulation range for efficiency
• Low excess air combustion
• Professional gas train assembly
• 24.8" W.C. manifold pressure

Advanced Variable Frequency Drive Package:

• Dual Mitsubishi A700 Series VFDs
• Variable speed burner/blower motor control
• Improved combustion efficiency
• Reduced electrical energy consumption
• Soft start capability
• Modern drive technology

Touchscreen PLC Control System:

• Touchscreen operator interface
• PLC-based burner management
• Digital control and monitoring
• Main rotary disconnect switch
• Professional industrial enclosure
• Integrated safety interlocks

Complete Hurst Feedwater System:

• Hurst Boiler and Welding Co. feedwater package
• Matched to boiler — same 2020 manufacture year
• Red-piped condensate return system
• Duplex pump configuration
• Complete feedwater management
• UL listed assembly

Low Pressure Flexibility:

• 15 PSIG steam / 30 PSIG water rating
• Suitable for steam or hot water applications
• 250°F maximum water temperature
• Broad application range
• Commercial and industrial capable

Safety & Compliance:

• ASME certified construction
• Safety relief valve rated 10,620 MBH
• Flame safeguard system
• Low water cutoff protection
• Multiple safety interlocks
• UL listed electrical components
• Professional safety engineering

SYSTEM COMPONENTS

Main Boiler:

• Unilux Model ZF1200LS
• Serial Number A3658
• Year Built 2020
• Flexible water tube design
• 12,400 MBH max gas input
• 15 PSIG steam / 30 PSIG water MAWP
• 1,062 SQFT heating surface
• ASME certified
• Complete with all trim and controls

Burner & Gas Train:

• Large forced-draft burner assembly
• Natural gas primary fuel
• Dual fuel capable per nameplate
• Max gas input 12,400 MBH
• Min gas input 1,260 MBH
• Max manifold pressure 24.8" W.C.
• Regulator inlet pressure 10 PSIG
• Safety shut-off valves
• Flame safeguard system

Variable Frequency Drives:

• Quantity: 2 Mitsubishi A700 Series VFDs
• Variable speed motor control
• Wall-mounted adjacent to control panel
• Matched to burner/blower motors

Control Panel:

• Touchscreen PLC operator interface
• Main rotary disconnect (red handle)
• Burner management system
• Digital monitoring and diagnostics
• Safety interlock integration
• Professional NEMA enclosure

Hurst Feedwater Package:

• Hurst Boiler and Welding Co., Coolidge, GA
• 575V, 3PH, 60Hz
• Full Load Amps: 8.5
• Duplex feedwater pump assembly
• Red-piped condensate/feedwater system
• Vertical condensate receiver tank (red)
• UL Listed — UL508A E214073
• 2020 manufacture

Condensate / Feedwater Piping:

• Complete red-piped condensate return system
• Condensate receiver tank
• Feedwater supply and return piping
• Isolation and gate valves throughout
• Professional piping installation

Safety & Instrumentation:

• Safety relief valve (10,620 MBH rated)
• Pressure gauge
• Low water cutoff
• Temperature sensors
• Water level controls
• Flame supervision
• Emergency shutdown

SPECIFICATIONS SUMMARY

• Manufacturer: Unilux Advanced Manufacturing, LLC
• Location: Niskayuna, New York, USA
• Model: ZF1200LS
• Serial No: A3658
• Year Built: 2020
• Type: Flexible Water Tube Boiler
• Fuel: Natural Gas (Dual Fuel Capable)
• Max Gas Input: 12,400 MBH
• Min Gas Input: 1,260 MBH
• Max W.P. Steam: 15 PSIG
• Max W.P. Water: 30 PSIG
• Max Water Temp: 250°F
• Safety Relief Valve: 10,620 MBH
• Heating Surface: 1,062 SQFT
• Max Manifold Pressure: 24.8" W.C.
• Regulator Inlet Pressure: 10 PSIG
• Supply Circuit: 575V, 3PH, 60Hz, 6.8A
• Control Circuit: 115V, 1PH, 60Hz, 4.20A
• VFDs: (2) Mitsubishi A700 Series
• Feedwater System: Hurst Boiler, 2020, 575V 3PH
• ASME Certified: Yes
• Condition: Used — Like New (2020)

ADDITIONAL INFORMATION

• Condition: Used — Like New
• Year Built: 2020
• Manufacturer: Unilux Advanced Manufacturing, LLC
• Manufacturing Location: Niskayuna, New York, USA
• Model: ZF1200LS
• Serial Number: A3658
• Boiler Type: Flexible Water Tube
• Fuel Type: Natural Gas (Dual Fuel Capable)
• Max Gas Input: 12,400 MBH
• Min Gas Input: 1,260 MBH
• Max W.P. Steam: 15 PSIG
• Max W.P. Water: 30 PSIG
• Max Water Temperature: 250°F
• Safety Relief Valve Rating: 10,620 MBH
• Heating Surface: 1,062 SQFT
• Turndown Ratio: ~10:1
• Gas Manifold Pressure: 24.8" W.C. maximum
• Regulator Inlet Pressure: 10 PSIG
• Supply Circuit: 575V, 3PH, 60Hz, 6.8 Amps
• Control Circuit: 115V, 1PH, 60Hz, 4.20 Amps
• VFDs: (2) Mitsubishi A700 Series Variable Frequency Drives
• Control: Touchscreen PLC panel with main rotary disconnect
• Feedwater Package: Hurst Boiler and Welding Co., 2020, 575V 3PH, UL Listed
• ASME Certified: Yes
• National Board Number: See nameplate

WHAT'S INCLUDED:

• Unilux ZF1200LS flexible water tube boiler — complete with all trim and controls
• (2) Mitsubishi A700 Series VFDs
• Touchscreen PLC control panel with main disconnect
• Hurst Boiler feedwater package (duplex pumps, receiver tank)
• Complete red-piped condensate and feedwater return system
• All associated piping, valves, and instrumentation

INSTALLATION NOTES:

• 575V three-phase power required
• Professional rigging and installation recommended
• Inspection welcome — contact us to schedule
• Additional photos and video available upon request