High-efficiency 3-pass stainless steel condensing boilers designed both for retrofit and new construction projects. Project costs are reduced thanks to the high water content heat exchanger, that requires no minimum flow rate and eliminates the need of a costly dedicated boiler circulator. Best quality materials used for all components guarantee high reliability and longer service life. Large heat-transfer surfaces, a counter-flow heat exchanger design and cold return water temperatures together optimize condensation opportunities. The RTC Series Condensing Boilers could be equipped with two-stage or modulating forced draft burners and premix, that achieve extremely low pollutant emissions meeting the most stringent NOx and CO requirements.

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Type Description Files
Technical sheet Data-sheet
Technical sheet Efficiency-curves
Technical sheet Water-side-pressure-drop
Brochure Brochure RTC 80


RTC-80 PSI 1,000 TO 5,500 BTU/HR SERIES

Code Model Documents
20165080 RIELLO RTC 1000-80
20166926 RIELLO RTC 1300-80
20166937 RIELLO RTC 1700-80
20166942 RIELLO RTC 2300-80
20166947 RIELLO RTC 3000-80
20166962 RIELLO RTC 3800-80
20166970 RIELLO RTC 4700-80
20166987 RIELLO RTC 5500-80

ACCESSORIES RTC-80

Code Model Documents
20169776 2'' ½ Safety Manifold
20169777 3'' Safety Manifold
20117584 4'' Safety Manifold
20169778 5'' Safety Manifold
20121463 80 psi Pressure Relief Valve 1’’ ¼ x 1’’ ¼ for RTC-80 1000 and 1300
20121464 80 psi Pressure Relief Valve 1’’ ½ x 1’’ ½ for RTC-80 1700 and 2300
20117586 6'' Safety Manifold
20121465 80 psi Pressure Relief Valve 2’’ x 2’’ for RTC-80 3000, 3800, 4700, 5500
20124673 60 psi Pressure Relief Valve 1’’ ¼ x 1’’ ¼ for RTC-80 1000 and 1300
20124674 60 psi Pressure Relief Valve 1’’ ½ x 1’’ ½ for RTC-80 1700 and 2300
20124675 60 psi Pressure Relief Valve 2'' x 2'' for RTC-80 3000, 3800, 4700, 5500
20125468 Condensate Neutralizer Kit (Shipped Loose) for RTC-80 1000, 1300, 1700
20125469 Condensate Neutralizer Kit (Shipped Loose) for RTC-80 2300 and 3000
20125470 Condensate Neutralizer Kit (Shipped Loose) for RTC-80 3800, 4700, 5500
20143548 Massimo Panel - 2 Boiler System
20143549 Massimo Panel - 3 Boiler System
20143550 Massimo Panel - 4 Boiler System
20143551 Massimo Panel - 5 Boiler System
20143552 Massimo Panel - 6 Boiler System
20143553 Massimo Panel - 7 Boiler System
20143554 Massimo Panel - 8 Boiler System

RIELLO RTC 1000-80 SET

Code Model Documents
20158757 Condensing Boiler Vessel RTC 1000-80
4030481 Casing kit for RTC 1000-80
20169776 2'' ½ Safety Manifold
20121463 80 psi Pressure Relief Valve 1’’ ¼ x 1’’ ¼ for RTC-80 1000 and 1300
20125468 Condensate Neutralizer Kit (Shipped Loose) for RTC-80 1000, 1300, 1700

RIELLO RTC 1300-80 SET

Code Model Documents
20158758 Condensing Boiler Vessel RTC 1300 -80
4030482 Casing kit for RTC 1300 -80
20169777 3'' Safety Manifold
20121463 80 psi Pressure Relief Valve 1’’ ¼ x 1’’ ¼ for RTC-80 1000 and 1300
20125468 Condensate Neutralizer Kit (Shipped Loose) for RTC-80 1000, 1300, 1700

RIELLO RTC 1700-80 SET

Code Model Documents
20158759 Condensing Boiler Vessel RTC 1700 -80
4030483 Casing kit for RTC 1700-80
20117584 4'' Safety Manifold
20121464 80 psi Pressure Relief Valve 1’’ ½ x 1’’ ½ for RTC-80 1700 and 2300
20125468 Condensate Neutralizer Kit (Shipped Loose) for RTC-80 1000, 1300, 1700

RIELLO RTC 2300-80 SET

Code Model Documents
20117584 4'' Safety Manifold
20158760 Condensing Boiler Vessel RTC 2300-80
4030484 Casing kit for RTC 2300-80
20121464 80 psi Pressure Relief Valve 1’’ ½ x 1’’ ½ for RTC-80 1700 and 2300
20125469 Condensate Neutralizer Kit (Shipped Loose) for RTC-80 2300 and 3000

RIELLO RTC 3000-80 SET

Code Model Documents
20158761 Condensing Boiler Vessel RTC 3000-80
4030485 Casing kit for RTC 2300-80
20169778 5'' Safety Manifold
20121465 80 psi Pressure Relief Valve 2’’ x 2’’ for RTC-80 3000, 3800, 4700, 5500
20125469 Condensate Neutralizer Kit (Shipped Loose) for RTC-80 2300 and 3000

RIELLO RTC 3800-80 SET

Code Model Documents
20169778 5'' Safety Manifold
20158762 Condensing Boiler Vessel RTC 3800-80
4030486 Casing kit for RTC 3800-80
20121465 80 psi Pressure Relief Valve 2’’ x 2’’ for RTC-80 3000, 3800, 4700, 5500
20125470 Condensate Neutralizer Kit (Shipped Loose) for RTC-80 3800, 4700, 5500

RIELLO RTC 4700-80 SET

Code Model Documents
20158763 Condensing Boiler Vessel RTC 4700-80
4030487 Casing kit for RTC 4700-80
20117586 6'' Safety Manifold
20121465 80 psi Pressure Relief Valve 2’’ x 2’’ for RTC-80 3000, 3800, 4700, 5500
20125470 Condensate Neutralizer Kit (Shipped Loose) for RTC-80 3800, 4700, 5500

RIELLO RTC 5500-80 SET

Code Model Documents
20117586 6'' Safety Manifold
20158764 Condensing Boiler Vessel RTC 5500-80
4030488 Casing kit for RTC 5500-80
20121465 80 psi Pressure Relief Valve 2’’ x 2’’ for RTC-80 3000, 3800, 4700, 5500
20125470 Condensate Neutralizer Kit (Shipped Loose) for RTC-80 3800, 4700, 5500
RTC-80 PSI

RIELLO RTC 1000-80 (20165080)

Type Description Languages Download
Instructions RTC 1000-5500-80 English
Spare-parts breakdown Catalogo RICAMBI Italian, English
Technical sheet Data-sheet English
Technical sheet Installation clearance English
Technical sheet Efficiency-curves English
Technical sheet Water-side-pressure-drop English
Instructions RTC 1000-5500-80 French
Certification Certificato di Omologa English
Instructions RTC 1000-5500-80 English
Spare-parts breakdown Catalogo RICAMBI Italian, English
Technical sheet Data-sheet English
Technical sheet Installation clearance English
Technical sheet Efficiency-curves English
Technical sheet Water-side-pressure-drop English
Instructions RTC 1000-5500-80 French
Certification Certificato di Omologa English

RIELLO RTC 1300-80 (20166926)

Type Description Languages Download
Instructions RTC 1000-5500-80 English
Spare-parts breakdown Catalogo RICAMBI Italian, English
Technical sheet Data-sheet English
Technical sheet Installation clearance English
Technical sheet Efficiency-curves English
Technical sheet Water-side-pressure-drop English
Instructions RTC 1000-5500-80 French
Certification Certificato di Omologa English
Instructions RTC 1000-5500-80 English
Spare-parts breakdown Catalogo RICAMBI Italian, English
Technical sheet Data-sheet English
Technical sheet Installation clearance English
Technical sheet Efficiency-curves English
Technical sheet Water-side-pressure-drop English
Instructions RTC 1000-5500-80 French
Certification Certificato di Omologa English

RIELLO RTC 1700-80 (20166937)

Type Description Languages Download
Instructions RTC 1000-5500-80 English
Spare-parts breakdown Catalogo RICAMBI Italian, English
Technical sheet Data-sheet English
Technical sheet Installation clearance English
Technical sheet Efficiency-curves English
Technical sheet Water-side-pressure-drop English
Instructions RTC 1000-5500-80 French
Certification Certificato di Omologa English
Instructions RTC 1000-5500-80 English
Spare-parts breakdown Catalogo RICAMBI Italian, English
Technical sheet Data-sheet English
Technical sheet Installation clearance English
Technical sheet Efficiency-curves English
Technical sheet Water-side-pressure-drop English
Instructions RTC 1000-5500-80 French
Certification Certificato di Omologa English

RIELLO RTC 2300-80 (20166942)

Type Description Languages Download
Instructions RTC 1000-5500-80 English
Spare-parts breakdown Catalogo RICAMBI Italian, English
Technical sheet Data-sheet English
Technical sheet Installation clearance English
Technical sheet Efficiency-curves English
Technical sheet Water-side-pressure-drop English
Instructions RTC 1000-5500-80 French
Certification Certificato di Omologa English
Instructions RTC 1000-5500-80 English
Spare-parts breakdown Catalogo RICAMBI Italian, English
Technical sheet Data-sheet English
Technical sheet Installation clearance English
Technical sheet Efficiency-curves English
Technical sheet Water-side-pressure-drop English
Instructions RTC 1000-5500-80 French
Certification Certificato di Omologa English

RIELLO RTC 3000-80 (20166947)

Type Description Languages Download
Instructions RTC 1000-5500-80 English
Spare-parts breakdown Catalogo RICAMBI Italian, English
Technical sheet Data-sheet English
Technical sheet Installation clearance English
Technical sheet Efficiency-curves English
Technical sheet Water-side-pressure-drop English
Instructions RTC 1000-5500-80 French
Certification Certificato di Omologa English
Instructions RTC 1000-5500-80 English
Spare-parts breakdown Catalogo RICAMBI Italian, English
Technical sheet Data-sheet English
Technical sheet Installation clearance English
Technical sheet Efficiency-curves English
Technical sheet Water-side-pressure-drop English
Instructions RTC 1000-5500-80 French
Certification Certificato di Omologa English

RIELLO RTC 3800-80 (20166962)

Type Description Languages Download
Instructions RTC 1000-5500-80 English
Spare-parts breakdown Catalogo RICAMBI Italian, English
Technical sheet Data-sheet English
Technical sheet Installation clearance English
Technical sheet Efficiency-curves English
Technical sheet Water-side-pressure-drop English
Instructions RTC 1000-5500-80 French
Certification Certificato di Omologa English
Instructions RTC 1000-5500-80 English
Spare-parts breakdown Catalogo RICAMBI Italian, English
Technical sheet Data-sheet English
Technical sheet Installation clearance English
Technical sheet Efficiency-curves English
Technical sheet Water-side-pressure-drop English
Instructions RTC 1000-5500-80 French
Certification Certificato di Omologa English

RIELLO RTC 4700-80 (20166970)

Type Description Languages Download
Instructions RTC 1000-5500-80 English
Spare-parts breakdown Catalogo RICAMBI Italian, English
Technical sheet Data-sheet English
Technical sheet Installation clearance English
Technical sheet Efficiency-curves English
Technical sheet Water-side-pressure-drop English
Instructions RTC 1000-5500-80 French
Certification Certificato di Omologa English
Instructions RTC 1000-5500-80 English
Spare-parts breakdown Catalogo RICAMBI Italian, English
Technical sheet Data-sheet English
Technical sheet Installation clearance English
Technical sheet Efficiency-curves English
Technical sheet Water-side-pressure-drop English
Instructions RTC 1000-5500-80 French
Certification Certificato di Omologa English

RIELLO RTC 5500-80 (20166987)

Type Description Languages Download
Instructions RTC 1000-5500-80 English
Spare-parts breakdown Catalogo RICAMBI Italian, English
Technical sheet Data-sheet English
Technical sheet Installation clearance English
Technical sheet Efficiency-curves English
Technical sheet Water-side-pressure-drop English
Instructions RTC 1000-5500-80 French
Certification Certificato di Omologa English
Instructions RTC 1000-5500-80 English
Spare-parts breakdown Catalogo RICAMBI Italian, English
Technical sheet Data-sheet English
Technical sheet Installation clearance English
Technical sheet Efficiency-curves English
Technical sheet Water-side-pressure-drop English
Instructions RTC 1000-5500-80 French
Certification Certificato di Omologa English

Condensing Boiler Vessel RTC 1000-80 (20158757)

Type Description Languages Download
Instructions RTC 1000-5500-80 English
Spare-parts breakdown Catalogo RICAMBI Italian, English
Technical sheet Data-sheet English
Technical sheet Installation clearance English
Technical sheet Efficiency-curves English
Technical sheet Water-side-pressure-drop English
Instructions RTC 1000-5500-80 French
Certification Certificato di Omologa English

Casing kit for RTC 1000-80 (4030481)

Type Description Languages Download

2'' ½ Safety Manifold (20169776)

Type Description Languages Download

80 psi Pressure Relief Valve 1’’ ¼ x 1’’ ¼ for RTC-80 1000 and 1300 (20121463)

Type Description Languages Download

Condensate Neutralizer Kit (Shipped Loose) for RTC-80 1000, 1300, 1700 (20125468)

Type Description Languages Download

2'' ½ Safety Manifold (20169776)

Type Description Languages Download

3'' Safety Manifold (20169777)

Type Description Languages Download

4'' Safety Manifold (20117584)

Type Description Languages Download

5'' Safety Manifold (20169778)

Type Description Languages Download

80 psi Pressure Relief Valve 1’’ ¼ x 1’’ ¼ for RTC-80 1000 and 1300 (20121463)

Type Description Languages Download

80 psi Pressure Relief Valve 1’’ ½ x 1’’ ½ for RTC-80 1700 and 2300 (20121464)

Type Description Languages Download

6'' Safety Manifold (20117586)

Type Description Languages Download

80 psi Pressure Relief Valve 2’’ x 2’’ for RTC-80 3000, 3800, 4700, 5500 (20121465)

Type Description Languages Download

60 psi Pressure Relief Valve 1’’ ¼ x 1’’ ¼ for RTC-80 1000 and 1300 (20124673)

Type Description Languages Download

60 psi Pressure Relief Valve 1’’ ½ x 1’’ ½ for RTC-80 1700 and 2300 (20124674)

Type Description Languages Download

60 psi Pressure Relief Valve 2'' x 2'' for RTC-80 3000, 3800, 4700, 5500 (20124675)

Type Description Languages Download

Condensate Neutralizer Kit (Shipped Loose) for RTC-80 1000, 1300, 1700 (20125468)

Type Description Languages Download

Condensate Neutralizer Kit (Shipped Loose) for RTC-80 2300 and 3000 (20125469)

Type Description Languages Download

Condensate Neutralizer Kit (Shipped Loose) for RTC-80 3800, 4700, 5500 (20125470)

Type Description Languages Download

Massimo Panel - 2 Boiler System (20143548)

Type Description Languages Download
Instructions Installation use and maintenance instructions English

Massimo Panel - 3 Boiler System (20143549)

Type Description Languages Download
Instructions Installation use and maintenance instructions English

Massimo Panel - 4 Boiler System (20143550)

Type Description Languages Download
Instructions Installation use and maintenance instructions English

Massimo Panel - 5 Boiler System (20143551)

Type Description Languages Download
Instructions Installation use and maintenance instructions English

Massimo Panel - 6 Boiler System (20143552)

Type Description Languages Download
Instructions Installation use and maintenance instructions English

Massimo Panel - 7 Boiler System (20143553)

Type Description Languages Download
Instructions Installation use and maintenance instructions English

Massimo Panel - 8 Boiler System (20143554)

Type Description Languages Download
Instructions Installation use and maintenance instructions English

Condensing Boiler Vessel RTC 1300 -80 (20158758)

Type Description Languages Download
Instructions RTC 1000-5500-80 English
Spare-parts breakdown Catalogo RICAMBI Italian, English
Technical sheet Data-sheet English
Technical sheet Installation clearance English
Technical sheet Efficiency-curves English
Technical sheet Water-side-pressure-drop English
Instructions RTC 1000-5500-80 French
Certification Certificato di Omologa English

Casing kit for RTC 1300 -80 (4030482)

Type Description Languages Download

3'' Safety Manifold (20169777)

Type Description Languages Download

80 psi Pressure Relief Valve 1’’ ¼ x 1’’ ¼ for RTC-80 1000 and 1300 (20121463)

Type Description Languages Download

Condensate Neutralizer Kit (Shipped Loose) for RTC-80 1000, 1300, 1700 (20125468)

Type Description Languages Download

Condensing Boiler Vessel RTC 1700 -80 (20158759)

Type Description Languages Download
Instructions RTC 1000-5500-80 English
Spare-parts breakdown Catalogo RICAMBI Italian, English
Technical sheet Data-sheet English
Technical sheet Installation clearance English
Technical sheet Efficiency-curves English
Technical sheet Water-side-pressure-drop English
Instructions RTC 1000-5500-80 French
Certification Certificato di Omologa English

Casing kit for RTC 1700-80 (4030483)

Type Description Languages Download

4'' Safety Manifold (20117584)

Type Description Languages Download

80 psi Pressure Relief Valve 1’’ ½ x 1’’ ½ for RTC-80 1700 and 2300 (20121464)

Type Description Languages Download

Condensate Neutralizer Kit (Shipped Loose) for RTC-80 1000, 1300, 1700 (20125468)

Type Description Languages Download

4'' Safety Manifold (20117584)

Type Description Languages Download

Condensing Boiler Vessel RTC 2300-80 (20158760)

Type Description Languages Download
Instructions RTC 1000-5500-80 English
Spare-parts breakdown Catalogo RICAMBI Italian, English
Technical sheet Data-sheet English
Technical sheet Installation clearance English
Technical sheet Efficiency-curves English
Technical sheet Water-side-pressure-drop English
Instructions RTC 1000-5500-80 French
Certification Certificato di Omologa English

Casing kit for RTC 2300-80 (4030484)

Type Description Languages Download

80 psi Pressure Relief Valve 1’’ ½ x 1’’ ½ for RTC-80 1700 and 2300 (20121464)

Type Description Languages Download

Condensate Neutralizer Kit (Shipped Loose) for RTC-80 2300 and 3000 (20125469)

Type Description Languages Download

Condensing Boiler Vessel RTC 3000-80 (20158761)

Type Description Languages Download
Instructions RTC 1000-5500-80 English
Spare-parts breakdown Catalogo RICAMBI Italian, English
Technical sheet Data-sheet English
Technical sheet Installation clearance English
Technical sheet Efficiency-curves English
Technical sheet Water-side-pressure-drop English
Instructions RTC 1000-5500-80 French
Certification Certificato di Omologa English

Casing kit for RTC 2300-80 (4030485)

Type Description Languages Download

5'' Safety Manifold (20169778)

Type Description Languages Download

80 psi Pressure Relief Valve 2’’ x 2’’ for RTC-80 3000, 3800, 4700, 5500 (20121465)

Type Description Languages Download

Condensate Neutralizer Kit (Shipped Loose) for RTC-80 2300 and 3000 (20125469)

Type Description Languages Download

5'' Safety Manifold (20169778)

Type Description Languages Download

Condensing Boiler Vessel RTC 3800-80 (20158762)

Type Description Languages Download
Instructions RTC 1000-5500-80 English
Spare-parts breakdown Catalogo RICAMBI Italian, English
Technical sheet Data-sheet English
Technical sheet Installation clearance English
Technical sheet Efficiency-curves English
Technical sheet Water-side-pressure-drop English
Instructions RTC 1000-5500-80 French
Certification Certificato di Omologa English

Casing kit for RTC 3800-80 (4030486)

Type Description Languages Download

80 psi Pressure Relief Valve 2’’ x 2’’ for RTC-80 3000, 3800, 4700, 5500 (20121465)

Type Description Languages Download

Condensate Neutralizer Kit (Shipped Loose) for RTC-80 3800, 4700, 5500 (20125470)

Type Description Languages Download

Condensing Boiler Vessel RTC 4700-80 (20158763)

Type Description Languages Download
Instructions RTC 1000-5500-80 English
Spare-parts breakdown Catalogo RICAMBI Italian, English
Technical sheet Data-sheet English
Technical sheet Installation clearance English
Technical sheet Efficiency-curves English
Technical sheet Water-side-pressure-drop English
Instructions RTC 1000-5500-80 French
Certification Certificato di Omologa English

Casing kit for RTC 4700-80 (4030487)

Type Description Languages Download

6'' Safety Manifold (20117586)

Type Description Languages Download

80 psi Pressure Relief Valve 2’’ x 2’’ for RTC-80 3000, 3800, 4700, 5500 (20121465)

Type Description Languages Download

Condensate Neutralizer Kit (Shipped Loose) for RTC-80 3800, 4700, 5500 (20125470)

Type Description Languages Download

6'' Safety Manifold (20117586)

Type Description Languages Download

Condensing Boiler Vessel RTC 5500-80 (20158764)

Type Description Languages Download
Instructions RTC 1000-5500-80 English
Spare-parts breakdown Catalogo RICAMBI Italian, English
Technical sheet Data-sheet English
Technical sheet Installation clearance English
Technical sheet Efficiency-curves English
Technical sheet Water-side-pressure-drop English
Instructions RTC 1000-5500-80 French
Certification Certificato di Omologa English

Casing kit for RTC 5500-80 (4030488)

Type Description Languages Download

80 psi Pressure Relief Valve 2’’ x 2’’ for RTC-80 3000, 3800, 4700, 5500 (20121465)

Type Description Languages Download

Condensate Neutralizer Kit (Shipped Loose) for RTC-80 3800, 4700, 5500 (20125470)

Type Description Languages Download