Bock Water heaters ezFIT Installation And Operation Instruction Manual page 10

GAS SYSTEM OPERATION
Turn off all electrical power to the water heater. Verify that the gas main is open and gas
pressure does not exceed 14" W.C. in the gas line. Gas pressures over 14" W.C. will damage the
gas valve. If gas pressure is under 14" W.C. open the gas cock and bleed the gas lines until all
air is purged from the line. Make certain the area is well ventilated while performing this
step. Check for any gas leaks on the burner piping. Prior to initial burner operation, check
that inlet gas pressure is in the correct operating range (5-14" W.C. for natural gas; 12-14"
W.C. for propane gas).
1. Set the thermostat to the lowest setting.
2. Turn off all electrical power to the appliance.
3. DO NOT attempt to light the burner by hand.
4. Turn gas control knob clockwise to "OFF". DO NOT FORCE.
5. Wait for five (5) minutes to clear out any gas. If you smell gas, STOP!
LP gas/propane gas is heavier than air and will remain at floor level in the occurrence of a
leak. Spaces below ground level will serve as areas for accumulation of leaking gas. Smell
around the entire appliance area for gas before lighting. Be sure to smell near the floor.
IF YOU SMELL GAS:
• Clear the room, building, or area of all occupants and do not re-enter the area until the
space has been determined to be safe.
• Use all practical means to eliminate sources of ignition. DO NOT OPERATE THE APPLIANCE.
If possible, cut off all electric circuits at a remote source to eliminate operation of automatic
switches in the area. Do not use any telephone in the area of the gas leak.
• Call your gas supplier from a telephone remote from the area of the leak. Follow the gas
supplier's instructions.
DO NOT ATTEMPT TO LIGHT ANY GAS APPLIANCE IF YOU ARE UNCERTAIN OF THE FOLLOWING:
• LP gas/propane gas and natural gas have an odorant added by the gas supplier that aids
in detection of the gas.
• This odor should be recognizable as a "sulfur" or "rotten egg" smell.
• If you have a diminished sense of smell or are unsure of the presence of gas, contact your
gas supplier from a telephone in another building.
• Consult with your gas supplier about the availability of gas detectors.
If you do not smell gas or the leak is corrected, go to next step.
6. Turn gas control knob counterclockwise to "ON".
7. Turn on all electric power to appliance.
8. Set thermostat to desired setting.
9. If the appliance will not operate, follow the instructions on
page 11 "To Turn Off Gas To Appliance" and call your
service technician or gas supplier.
Verify gas inlet and manifold pressure. For natural gas, manifold
gas pressure should be 3.5" W.C. and inlet pressure should be between 5-14" W.C. For propane
gas, manifold pressure should be 10" W.C. and inlet pressure should be between 12-14" W.C.
Your Bock water heater uses a built-in pressure regulator and fixed burner orifice so ordinarily
no gas rate adjustments are required.
Page 10
WARNING
WARNING
Figure 7: Gas Valve
Atmospheric Gas