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To the Installer: To the Consumer:
Please attach these instructions Please read these and all component
next to the water heater. instructions and keep for future reference.
OIL-FIRED BCS
Instruction Manual
Warranty, Registration Card and Parts List are included.
Homeowner: Please remember to return the Registration Card!
WARNING If higher water temperature is needed in part
Improper installation, adjustment, alteration, of the water system, automatic temperature
service or maintenance can caus
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COLD INLET HOT OUTLET D C HIGH LIMIT 120, 190 (120, 190 only) HOT OUTLET C AUXILIARY OUTLET (COMBINED APPLIANCE) 20, 32, 51 AQUASTAT AUXILIARY OUTLET (COMBINED APPLIANCE) B A RETURN B 120, 190 A D AQUASTAT RETURN 20, 32, 51 COLD INLET E RETURN E 20, 32, 51, 120, 190E-BCS 40E-BCS OIL-FIRED BCS Instruction Manual Dimensions 3 3 3 1 3 20e-BCS 20 60 0.43 ⁄4'' ⁄4'' ⁄4'' 90° 66 38 ⁄4'' 20'' 6'' 11'' 14 ⁄4'' 120/60 180 3 3 32E-BCS 32 104 .75 ⁄4'' ⁄4'' 1'' 90° 114 51'' 20'' 6'' 11'' 17'' 120/60 265 3 3
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1 1. Cut a 7" O.D. opening in the preferred wall and provide a minimum of ⁄2" clearance of non-combustible space around the Balanced Flue. The opening should allow for a 1 ⁄2" downward pitch to the outside for drainage of any condensate in the Balanced Flue. 2. Insert the Balanced Flue from the 2 Mounting Tabs: inside through the wall. Check the Attach to vent with 4 metal screws outside extension to be sure air inlet supplied. holes are exposed and will not be covered by the flashing ring. Fa
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CONNECT WATER PIPING Be careful not to apply any heat to the water heater nipples. Install dielectric unions and shut off valves on both hot and cold water lines. 40 BCS models are equipped with a brass inlet bushing in- stalled in the tank. Heaters equipped with this bushing are marked next to the inlet by the decal shown on the left. The purpose of this bushing is to help keep the tank bot- tom free of sediment by aiding tank flushing. This bush- ing must be located as shown on the decal to fu
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FRESH AIR INTAKE VENT Proper sealing of the fresh air intake vent material is important, but temperature is not an issue. Failure to properly seal the inlet venting subjects the burner to possible reverse drafts after burner shutdown—a hazardous condition with the possibility of creating a fire. Use only solid or flexible metal duct, rigid plastic, or similar material of 4" diameter. Note: Do not use flexible plastic dryer vent hose. Avoid tight turns with flexible ducting and limit length. If u
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CONNECT THE OIL LINE Gravity System: The oil burner is normally equipped with a single-stage pump equipped 3 for one line (gravity) flow. Use ⁄8" O.D. or larger soft copper tubing and attach with flared fittings. DO NOT USE COMPRESSION FITTINGS. Install the shut off valve and oil filter in the oil line. Follow instructions from the pump manufacturer (attached to pump). Lift System: Run a two-line system (suction and return lines) for lifts over 8 feet. Install a bypass plug if required accordi
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PLACE WATER SYSTEM IN OPERATION 1. Fill the tank with water, opening a hot water faucet to allow trapped air to escape from the heater. Open the cold water inlet valves. Shut off each faucet as it delivers water that is free of air. Inspect for leaks. Never operate an empty or partially full heater. 2. Be sure the oil tank is filled with #1 or #2 heating oil. Loosen the ignitor hold down screw and swing the ignitor back open on the hinge. Rotate the blower wheel a few times to loosen the pump sh
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MEASURING THE OUTCOMING WATER TEMPERATURE, CON’T Date Time Person running test Set temp °F Outlet temp °F WARNING: Hydrogen gas can be produced in a hot water system served by a heater that has not been used for a long period of time (generally two weeks or more). Hydrogen gas is extremely flammable. To reduce the risk of injury, open the hot water faucet at the highest location in the house for several minutes before using any electrical appliance connected to the hot water system. If hydro
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SERVICE 1. Check the fuel supply, electrical wiring, fuses, and make sure the temperature control is calling for heat. 2. If the motor runs but there is no flame, remove the electrode assembly, clean, readjust, and check the porcelain for cracks. Replace if necessary. Check the ignitor to see if it is produc- ing a spark. (Use extreme caution—the ignitor has 14,000 volt output.) Make sure the coupling between the motor and pump shaft is not slipping. Check the set screw on the blower wheel for t
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COMPANY’S RESPONSIBILITY The company’s responsibility is to repair or replace, at our option, with the prevailing compa- rable Bock model, any part of the equipment, including the tank, sold by the company which proves to be defective in material or workmanship during the warranty period, when installed in accordance with applicable codes and ordinances, and operated and maintained in accor- dance with our instructions, subject to the conditions and exceptions indicated below. Our lia- bility, i
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OUR TOTAL WARRANTY COMMITMENT We will not assume, nor authorize any person to assume for us, any other liability in connec- tion with the sale or operation of Bock Water Heaters. Any implied warranties, including mer- chantability or fitness for a particular application, imposed on the sale of this heater under laws of the state of sale are limited to one year. Some states do not allow limitations on how long an implied warranty lasts, or for the exclusion of incidental or consequential damages,
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BURNER WIRE DIAGRAM Models 20, 32,40,51,120,190E-BCS Carlin EZ-Temp Control ™ Balanced Flue Page 14 Oil-Fired BCS
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. (OPTIONAL) BACKFLOW PREVENTER EXPANSION TANK BCS AND RADIANT HEAT Radiant heating: An in-floor hot water space heating system A Bock high-efficiency water heater and zoned radiant heating—Bock&Radiant—make perfect partners for cost-effective personal comfort that heats both space and water. Bock&Radiant uses functional hot water and avoids boiler-type overheating that wastes energy. Bock&Radiant eliminates using a boiler during warm months and lets ecomonic domestic hot water work all year aro
