Torus

Heat Exchanger	Watertube Stainless Steel Condensing
Size Range	300 - 4,000 MBH
AHRI Boiler Efficiency	97.5%*
AHRI Water Heater Efficiency	97.5%*
Turndown	Full Modulation (10:1)*
Applications	Variable Volume, Full Flow, Primary / Secondary
	*Efficiencies & Turndown vary by unit size

Torus watertube boilers and water heaters bring next level performance in a small compact footprint to today’s applications. The RBI tradition of high quality, performance equipment in a user-friendly design continues with Torus.

Incorporating all industry-proven components including HEATNET 3.0 touchscreen cascade control, Tru-Flow fuel/air coupling system with 10:1 turndown and capacities to 4000 MBH Torus has the solution for all commercial installations.

The Torus uses a pressure driven mixing system with no moving parts to provide a reliable maximum of 10:1 turndown, without lowering the CO2% while avoiding nuisance ignition lockouts.

300 - 3,000 MBH

4,000 MBH

Features and Benefits

300 - 3,000 MBH

4,000 MBH

300 – 4000 MBH
Full Modulation (up to 10:1)
4 Pass Double-Row Watertube Heat Exchanger (160 psi/ASME (H & HLW) Stamp)
316L Stainless Steel Watertube Heat Exchanger
Variable Volume, Full Flow and Primary/Secondary
Sika Vortex Flow Sensor
HEATNET 3.0 Integrated Control Platform
Touchscreen Programming and Diagnostics
Modbus, LonWorks and BACnet BMS Integration
Category II and IV (up to 160’)
PVC/CPVC, Polypropylene and Stainless Steel Vent Approved
Warranty (Heat Exchanger): 10-year Boiler; 5-year Water Heater
NG/LP/Dual Fuel
Easy Maintenance and Installation
Outdoor Installation
Top Inlet/Outlet Water Connections (Optional with Indoor Models Only)
Low Nox

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Torus

Heat Exchanger

Torus heat exchangers are designed for optimum performance and durability. Made from an industrial quality 316L stainless steel Torus heat exchangers are reliable and robust while being very resistant to both thermal shock and acidic condensate.

A unique 4-pass design works in concert with a new multichannel manifold and increased tube diameters resulting in ultra-high efficiency with very low pressure drop.

Torus heat exchangers are manufactured with an industrial quality 316L stainless steel through a process called tube hydroforming. Tube hydroforming allows the shaping of stainless steel tubes that are not only stronger and lighter but also have a higher quality surface than competitive heat exchangers maximizing both performance and durability in a compact design.

Hydroforming insures a uniform and consistent gap between the tubes facilitating consistent exhaust gas circulation and uniform heat transfer throughout the entire heat exchanger.

4-Pass Heat Exchanger

Torus heat exchangers use a 4-pass system for maximum efficiency. The unique path of water throughout the heat exchanger is designed to absorb as much heat energy as possible.

Pass 1: Return water passes through the first set of inner tubes absorbing residual heat energy.
Pass 2: Water passes through the exhaust gas chamber
Pass 3: Outer tubes of the combustion chamber
Pass 4: Supply water distribution final pass through the inner tubes of the combustion chamber

Gas Train

Bluejet Burner

Torus’ Bluejet burner offers industry leading modulation capacity, flame retention and combustion quality. Whether natural gas or LP gas, BlueJet’s low NOx design works in perfect concert with our Tru-Flow fuel/air system providing consistent reliable operation.

Symmetric Air/Fuel Coupling

RBI’s state-of-the-art air/fuel coupling combustion control system is instantly responsive and completely adaptable. This unique boiler combustion control system is designed to keep the Torus running safe, clean and efficient. The system reacts to changes in air and instantly compensates fuel supply by adjusting input to maintain a constant air/fuel mixture across the modulation range. The unique design of the air/fuel mixing system ensures a complete and consistent air/ fuel mixture to the burner which increase combustion efficiency and repeatability all while maintaining low emissions.

SIKA FLOW SENSOR^®

All Torus boilers include a SIKA vortex flow sensor mounted in a by-pass configuration and mapped to indicate the boiler flow in (gpm). The SIKA flow sensor utilizes vortex technology which is then converted to an electrical signal sent directly to the HEATNET Boiler Management System for real time flow annunciation. The SIKA flow sensor is fully adjustable throughout the boiler model operating range.

HEATNET 3.0

Learn More

Digital Touch Screen Programming

Lead/Lag Cascade (16 Units)

Mixed-Size Unit Communication

Adaptive Modulation

Circular Pump/VFD/Valve Control

BMS Integration

Freeze Protection & Delta T Monitoring

Hybrid/base Load Capability

Priority Boiler Control

Domestic Hot Water Communication

Web-Based Remote Monitoring/Dashboard

Diagnostics and Troubleshooting

Set Points

Exclusive Remote Monitoring Capability with HEATNET Online

Ease of Service

Torus just may be the easiest piece of equipment ever to service. A unique burner door system provides easy access to both the burner and heat exchanger tube bundle. All burner doors come with a slide and hinge mechanism that easily slides outwards offering full access to the combustion chamber for annual inspection and service.