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Rinnai 399K BTU Natural Gas RCB-Series Commercial Wall Boiler Ultra Low NOx

By Rinnai | Model: RCB399AN | ID: 60853
No Sales Tax - in most states excluding California
Manufacturer Warranty Included
Satisfaction Guarantee - or return within 30 Days
Most Products In Stock - Call or Text (833) 658-3387 for availability
$18,767.00 + FREE SHIPPING

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Product Details

Rinnai 399K BTU Natural Gas RCB-Series Commercial Wall Boiler Ultra Low NOx RCB399AN

The Rinnai 399K BTU Natural Gas RCB-Series Commercial Wall Boiler Ultra Low NOx RCB399AN is a high-efficiency condensing wall-mounted boiler designed for indoor hydronic heating in commercial buildings. This commercial-grade boiler delivers precise modulating heat with up to 97% thermal efficiency, ensuring energy-efficient operation. It features a durable 316L stainless steel water tube heat exchanger and advanced controls for monitoring and system integration. The RCB399AN is suitable as a primary or secondary heat source for office buildings, schools, hospitals, apartments, and other commercial facilities.

Important Note:
Installation, commissioning, and servicing of this boiler must be performed by a licensed and qualified professional following all manufacturer guidelines, local codes, and industry standards. Warranty coverage is subject to manufacturer terms and proper installation.

Product Features:

  • High-Efficiency Condensing Boiler: Up to 97% thermal efficiency for reduced energy consumption.
  • Modulating Performance: 10:1 turndown ratio allows precise heat output matching load demands.
  • Advanced Controls: Digital touchscreen interface for setup, diagnostics, and monitoring.
  • Connectivity: Built-in Modbus for building management system (BMS) integration.
  • Durable Construction: 316L stainless steel water tube heat exchanger with ASME H-stamp.
  • Cascade Capability: Supports cascading of multiple units to meet larger heating demands.
  • Ultra Low NOx Emissions: Meets stringent low-emission standards for environmentally friendly operation.

View More Rinnai Parts

Specifications

Rinnai 399K BTU Natural Gas RCB-Series Commercial Wall Boiler Ultra Low NOx RCB399AN

Brand Rinnai Model RCB399AN
Product Type Commercial Wall-Mounted Condensing Boiler Fuel Type Natural Gas (Field Convertible to Propane)
Max Input 399,000 BTU/hr Min Input 39,900 BTU/hr
Thermal Efficiency Up to 97% Turndown Ratio 10:1
Heat Exchanger 316L Stainless Steel Water Tube, ASME H-stamp Ignition Direct Electronic Ignition
Installation Location Indoor Commercial HVAC Control Interface Digital Touchscreen
Connectivity Built-in Modbus Cascade Capability Supports Multiple Units
Ultra Low NOx Emissions Yes
Warranty

Rinnai 399K BTU Natural Gas RCB-Series Commercial Wall Boiler Ultra Low NOx RCB399AN

Warranty Type Heat Exchanger Parts Labor
Standard Commercial 10 Years Non-Prorated 5 Years Not Included

 

Documents

Rinnai 399K BTU Natural Gas RCB-Series Commercial Wall Boiler Ultra Low NOx RCB399AN

Submittal

Shipping

We ship freight to the 48 contiguous states, excluding Hawaii and Alaska. Some shipping restrictions may apply. Liftgate services may incur an additional fee, which can be added at checkout.

Order Processing: Orders are processed within 1-3 business days (excluding weekends). Orders placed on Fridays will be processed the next business day. Once shipped, you’ll receive an email confirmation with tracking details. Backordered products may have longer processing times, and we will notify you of any delays.

Arrival of Goods: Freight delivery times depend on the carrier's schedule and routing. Estimated delivery times are provided at checkout. The carrier will contact you to arrange delivery, and you must be present to sign for the shipment.

Damages: Upon delivery, inspect your shipment carefully for any damage or discrepancies. Note any issues on the carrier’s delivery receipt and notify us within 24 hours. Claims made after this timeframe may be denied. Photographic proof is required for processing claims. Report damages or discrepancies immediately at support@hvacstore.com.

Returns: For returns unrelated to damage, contact us at support@hvacstore.com for authorization. Return shipping costs are the customer’s responsibility, and a 20% restocking fee applies. Items must be in original packaging and condition for a refund.

Delivery Receipt: Before signing the delivery receipt, inspect the shipment for any damage. Your signature confirms acceptance of the delivery unless issues are noted.

Policy Updates: Our shipping policy may change, and updates will be communicated via our website or other channels. For any questions, contact The HVAC Store at support@hvacstore.com or call (833) 658-3387.

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Product Details

Rinnai 399K BTU Natural Gas RCB-Series Commercial Wall Boiler Ultra Low NOx RCB399AN

The Rinnai 399K BTU Natural Gas RCB-Series Commercial Wall Boiler Ultra Low NOx RCB399AN is a high-efficiency condensing wall-mounted boiler designed for indoor hydronic heating in commercial buildings. This commercial-grade boiler delivers precise modulating heat with up to 97% thermal efficiency, ensuring energy-efficient operation. It features a durable 316L stainless steel water tube heat exchanger and advanced controls for monitoring and system integration. The RCB399AN is suitable as a primary or secondary heat source for office buildings, schools, hospitals, apartments, and other commercial facilities.

Important Note:
Installation, commissioning, and servicing of this boiler must be performed by a licensed and qualified professional following all manufacturer guidelines, local codes, and industry standards. Warranty coverage is subject to manufacturer terms and proper installation.

Product Features:

  • High-Efficiency Condensing Boiler: Up to 97% thermal efficiency for reduced energy consumption.
  • Modulating Performance: 10:1 turndown ratio allows precise heat output matching load demands.
  • Advanced Controls: Digital touchscreen interface for setup, diagnostics, and monitoring.
  • Connectivity: Built-in Modbus for building management system (BMS) integration.
  • Durable Construction: 316L stainless steel water tube heat exchanger with ASME H-stamp.
  • Cascade Capability: Supports cascading of multiple units to meet larger heating demands.
  • Ultra Low NOx Emissions: Meets stringent low-emission standards for environmentally friendly operation.

View More Rinnai Parts

Specifications

Rinnai 399K BTU Natural Gas RCB-Series Commercial Wall Boiler Ultra Low NOx RCB399AN

Brand Rinnai Model RCB399AN
Product Type Commercial Wall-Mounted Condensing Boiler Fuel Type Natural Gas (Field Convertible to Propane)
Max Input 399,000 BTU/hr Min Input 39,900 BTU/hr
Thermal Efficiency Up to 97% Turndown Ratio 10:1
Heat Exchanger 316L Stainless Steel Water Tube, ASME H-stamp Ignition Direct Electronic Ignition
Installation Location Indoor Commercial HVAC Control Interface Digital Touchscreen
Connectivity Built-in Modbus Cascade Capability Supports Multiple Units
Ultra Low NOx Emissions Yes
Warranty

Rinnai 399K BTU Natural Gas RCB-Series Commercial Wall Boiler Ultra Low NOx RCB399AN

Warranty Type Heat Exchanger Parts Labor
Standard Commercial 10 Years Non-Prorated 5 Years Not Included

 

Documents

Rinnai 399K BTU Natural Gas RCB-Series Commercial Wall Boiler Ultra Low NOx RCB399AN

Submittal

Shipping

We ship freight to the 48 contiguous states, excluding Hawaii and Alaska. Some shipping restrictions may apply. Liftgate services may incur an additional fee, which can be added at checkout.

Order Processing: Orders are processed within 1-3 business days (excluding weekends). Orders placed on Fridays will be processed the next business day. Once shipped, you’ll receive an email confirmation with tracking details. Backordered products may have longer processing times, and we will notify you of any delays.

Arrival of Goods: Freight delivery times depend on the carrier's schedule and routing. Estimated delivery times are provided at checkout. The carrier will contact you to arrange delivery, and you must be present to sign for the shipment.

Damages: Upon delivery, inspect your shipment carefully for any damage or discrepancies. Note any issues on the carrier’s delivery receipt and notify us within 24 hours. Claims made after this timeframe may be denied. Photographic proof is required for processing claims. Report damages or discrepancies immediately at support@hvacstore.com.

Returns: For returns unrelated to damage, contact us at support@hvacstore.com for authorization. Return shipping costs are the customer’s responsibility, and a 20% restocking fee applies. Items must be in original packaging and condition for a refund.

Delivery Receipt: Before signing the delivery receipt, inspect the shipment for any damage. Your signature confirms acceptance of the delivery unless issues are noted.

Policy Updates: Our shipping policy may change, and updates will be communicated via our website or other channels. For any questions, contact The HVAC Store at support@hvacstore.com or call (833) 658-3387.

Reviews

Customer Reviews

Be the first to write a review
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