Pb Heat 14359 Oil Fired Hot Water Boiler 87.5% Afue

Product Description

The PB HEAT 14359 is a cast iron, oil-fired hot water boiler from the Peerless WBV-e Series, designed for residential natural draft (chimney) venting applications. Rated at 87.5% AFUE, it delivers a DOE heating capacity range of 75 to 126 MBH and a Net IBR Rating of 65 to 110 MBH, making it well suited for moderate to larger residential heating loads. The unit ships less burner, so a compatible flame retention burner — such as a Carlin, Riello, or Beckett model — must be supplied and installed separately. It includes a Taco circulator and Hydrostat reset control with low water cut-off. Licensed HVAC technicians and plumbers typically perform installation.

The 14359 is intended for residential hot water heating systems using natural draft venting through an 8-inch by 8-inch masonry chimney with a minimum 15-foot height. The boiler is a floor-mount unit measuring 22.125 inches in length, 27.875 inches in width, and 35 inches in height. It accepts firing rates from 0.6 to 1.05 GPH, giving installers flexibility across eight firing rates depending on heat load requirements. The convertible rear-to-top flue outlet adds layout flexibility during installation. Compatible burner types listed by the manufacturer include Carlin, Riello, and Beckett flame retention units.

Key Features

• 87.5% AFUE oil-fired cast iron boiler for residential hot water systems
• Ships less burner — compatible with Carlin, Riello, and Beckett flame retention burners
• Includes Taco circulator and Hydrostat reset control with low water cut-off
• Convertible rear-to-top flue outlet for installation flexibility (3 and 4 section boilers)
• Full plate swing-out door for ease of service access
• Powder coated steel jacket with insulation to reduce standby heat loss
• Cast iron sections assembled with steel push nipples and factory tested for a watertight seal

Compatibility

Designed for residential oil-fired hot water heating systems using natural draft chimney venting. Compatible burner types include Carlin, Riello, and Beckett flame retention burners, supplied separately. Optional accessories include a draft regulator and tankless water heater coil.

Installation Notes

Installation must be performed by a licensed HVAC technician or plumber in accordance with local codes, ASME standards, and applicable ETL and AHRI requirements. Shut off all electrical power and fuel supply to the system before beginning any work. Verify chimney sizing meets the 8-inch by 8-inch, 15-foot minimum height requirement before connecting the 6-inch vent outlet. The unit does not include a burner — select and install a compatible flame retention burner separately before commissioning.

Technical Specifications

• Boiler Type: Oil-Fired Hot Water
• AFUE Rating: 87.5%
• DOE Heating Capacity: 75 to 126 MBH
• Net IBR Rating: 65 to 110 MBH
• Firing Rate: 0.6 to 1.05 GPH
• Boiler Material: Cast Iron
• Pressure Rating: 30 psi
• Water Content: 11.75 gallons
• Supply Connection: 1.5 inches Threaded
• Return Connection: 1.25 inches Threaded
• Vent Size: 6 inches
• Chimney Size: 8 inches x 8 inches x 15 feet height
• Dimensions: 22.125 inches L x 27.875 inches W x 35 inches H
• Mounting Type: Floor Mount
• Application: Residential
• Relief Valve: Supplied
• Warranty: Lifetime Limited
• Applicable Standards: ASME H, ETL (Canada and US), AHRI, OMA
• Inclusions: Circulator, Steel Push Nipples, Powder Coated Steel Jacket, Full Plate Swing-Out Door, Convertible Rear to Top Flue Outlet, Drain Valve, Temperature-Pressure Gauge
• Exclusion: Burner

Standard Information

• Brand: PB HEAT
• Manufacturer Part Number: 14359