BOCK WATER HEATERS, INC.
110 South Dickinson Street, Madison, WI 53703 Phone: 608/257-2225 • Fax: 608/257-5304

SERVICE

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1.Check the fuel supply, electrical wiring and fuses, and make sure temperature control is calling for heat.

2.If the motor runs but there is no flame, remove the electrode assembly, clean, readjust to the burner manufacturer’s specifications, check the electrode porce- lain for cracks and replace if necessary. Check the transformer to see if it is pro- ducing a strong spark. (Use extreme CAUTION: The transformer has a 10,000 volt output). Check that the coupling between the motor and pump shaft is not slipping. Check the set screw on the blower wheel for tightness. Clean or replace the nozzle with the correct size and spray angle (see Chart A, page 11).

3.Bleed the pump and check for clear, air-free oil. If the oil is milky or frothy, check the line for air leaks at fittings. Tighten all fittings again. Check the filter gaskets and make sure cartridge is clean.

4.If the burner motor does not run, check the motor thermal overload button (red button on end of motor). Reset the primary control by pushing the reset button on the control. If the burner motor still does not run after resetting the control, turn off the electricity and replace the flame detector (with the same make) located in the burner compartment. Reset the primary control. If the motor still does not run, replace the control.

5.If the burner ignites and runs a short time (30-40 seconds), then goes out on safety, replace the flame detector. If the burner still runs only a short time, replace the control.

6.If there is a smell of oil or combustion products, remove and clean the electrode assembly (see No. 2 above). Check the draft in the stack above the heater. Stack draft (pull in) should be -.02” W.C. minimum to -.05” W.C. maximum.

Check for exhaust fans in the heater room or adjacent areas which draw com- bustion air away from heater. THE HEATER MUST HAVE COMBUSTION AIR TO OPERATE.

For more information, contact your installer, the nearest Bock distributor, or write, call or fax:

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Bock Water heaters 40E, 50ESC, 51PP, 40PP, 33PP, 51EC, 32EC, 20E, 33E, 32PPC, 20PP instruction manual Service
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33E, 32PPC, 40PP, 40E, 51EC specifications

Bock Water Heaters is a leading manufacturer of commercial and residential hot water heating solutions. Among their popular models are the Bock 50ES, 20PP, 33PP, 20E, and 51E, each designed to cater to different heating needs and applications.

The Bock 50ES is a notable model that offers a robust 50-gallon capacity, making it ideal for medium-sized households or light commercial applications. This water heater features high-quality glass-lined tanks that provide excellent insulation, ensuring hot water is readily available while maintaining energy efficiency. The unit is equipped with a powerful gas burner that allows for quick recovery rates, ensuring users won’t run out of hot water during peak demand periods.

The Bock 20PP and 33PP models are designed for smaller spaces and applications requiring less hot water. The 20PP features a compact 20-gallon tank, while the 33PP offers an expanded capacity of 33 gallons. Both models utilize advanced electric elements and offer superior energy efficiency, making them ideal for residential use. The stainless-steel construction adds durability and resistance to corrosion, ensuring longevity and reducing maintenance costs.

For those looking for a more versatile option, the Bock 20E offers an electric model that can supply hot water efficiently in various settings. With a 20-gallon capacity and a design aimed at maximizing energy savings, the 20E is perfect for apartments, condominiums, and small homes. The electric thermostat and easy installation allow users to benefit from strong performance without extensive modifications to existing plumbing systems.

Lastly, the Bock 51E caters to higher demands, providing a capacity of 51 gallons. This model is well-suited for larger families or commercial establishments that require a substantial amount of hot water. The unit features advanced heating technology to ensure quick recovery times and comes with various safety features, such as a pressure relief valve, maintaining user safety and compliance with regulations.

Overall, Bock Water Heaters' 50ES, 20PP, 33PP, 20E, and 51E models exemplify quality craftsmanship and innovative technology, catering to diverse hot water needs with efficiency and reliability. Whether for residential use or commercial applications, Bock’s range assures customers of an uninterrupted hot water supply, enhanced energy efficiency, and robust performance.
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