QHT B3-B9 installation instructions Figure a

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6. Intake Venting Cont.

c.) Boiler located in a room under negative pressure:

If the boiler is to be installed within a home where the operation of exhaust fans, attic fans, kitchen ventilation systems, clothes dryers or fireplaces may create severe negative vent pressures causing unsatisfactory combustion and venting, special provisions should be made for additional make-up air to supply the other air requirements. If building is of tight construction, combustion air requirements may not be met and combustion air ducts from outside may be necessary. Please refer to NFPA No. 31.

Tight Construction (as defined by ANSI Z223.1):

1.Walls and ceilings exposed to the outside atmosphere have a continuous water vapor retarder with a rating of 1 perm or less with openings sealed with gaskets, etc..

2.Weather-stripping has been added on open able windows and doors, and caulking or sealants are applied to areas such as: joints around windows and door frames, between sole plates and floors, between wall- ceiling joints, between wall panels, at penetrations for plumbing, electrical, and gas lines, and in other openings.

If the building is of tight construction, air openings must be provided from the outside, with appropriate sizing depending on amount of BTU/H as shown in pictures. The boiler room must never be under a negative pressure, even if the appliance is installed as direct vent. Always provide air openings sized not only to the dimensions required for the firing rate of all appliances, but also to handle the air movement rate of the exhaust fans or air movers using air from the building or boiler room.

Figure A.

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Contents Manufactured by Biasi S.p.A Verona, Italy Distributed By Phone FAXPage Table of Contents Important Information Please read this page carefullyPage Homeowner Information for Gas To Start UP the ApplianceGas systems only General InformationTrim Kit Components Boiler Block Assembly Do not Over Tighten Draw RodsBoiler Location Installation of Boiler Trim Components Switch Gas systems onlyInstallation of Boiler Trim Components Boiler Tapping DiagramSafety Relief Valve Piping the BoilerIntake Venting Figure a Exhaust Venting Common Exhaust VentingBlocked Flue Switch Gas Venting Gas Burner SetupOil Oil Burner Setup Burner ManufacturerGas Burner Setup Installation of Sediment Trap and Burner Supply Gas Line PipingBoiler Jacket Assembly Wiring 7248U Wiring Procedure Oil Burner Wiring Riello OIL BURNER, SR504, Control Wiring with DHW Priority Riello OIL BURNER, AZ-4P, Control Wiring with DHW Priority Carlin OIL BURNER, SR501, Control Wiring with DHW Priority Page Heatwise SU-2A, SR503, Control Wiring with DHW Priority Page Maintenance CommissioningInstaller Notes System CheckoutPage Page Tear on this Line

B3-B9 specifications

The QHT B3-B9 is a remarkable series of versatile vehicles designed to cater to a wide array of industries, including construction, mining, and heavy-duty logistics. With a focus on durability, efficiency, and innovative technology, the QHT B3-B9 stands out as a preferred choice for demanding tasks.

One of the key features of the QHT B3-B9 series is its robust frame construction, which employs high-strength steel to ensure maximum durability in harsh working conditions. This resilience allows the vehicle to withstand significant payloads while minimizing wear and tear, reducing maintenance costs over the long haul. Additionally, the design includes advanced corrosion resistance treatments, extending the vehicle's lifespan even in challenging environments.

The QHT B3-B9 is powered by a state-of-the-art engine, which adheres to the latest emissions standards while delivering impressive fuel efficiency. This engine utilizes advanced fuel injection technology, optimizing power output without compromising environmental responsibility. The combination of high torque and superior power-to-weight ratio enables the vehicle to perform effectively across various terrains, ensuring stability and control under load.

Another notable characteristic of the QHT B3-B9 series is its emphasis on operator comfort and safety. The cabin is ergonomically designed, featuring adjustable seating, intuitive controls, and enhanced visibility. This focus on user experience not only enhances productivity but also minimizes operator fatigue during long hours of operation. To further improve safety, the vehicle is equipped with comprehensive monitoring systems that provide real-time feedback on performance and potential issues.

Technologically, the QHT B3-B9 integrates advanced telematics, allowing operators and fleet managers to track performance metrics, fuel consumption, and maintenance schedules. This connectivity enables proactive management, reducing downtime and improving overall efficiency.

In conclusion, the QHT B3-B9 series represents a harmonious blend of strength, efficiency, and modern technology, making it an invaluable asset for businesses that require reliable performance in demanding environments. Its innovative features and commitment to operator safety and comfort ensure that it remains a top choice among heavy-duty vehicles in its class.
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