Bradford White UCG100H199 Installation & Operation Manual page 24

3. While checking for leaks care must be taken to prevent solution from contacting the electrical connections
at the control. If electrical connections at the control become wet, they must be thoroughly dried before
attempting to operate the water heater.
Gas Meter Size – Natural Gases Only
Be sure that the gas meter has sufficient capacity to supply the full rated gas input of the water heater as well
as the requirements of all other gas fired equipment supplied by the meter. If the gas meter is too small, ask
the gas company to install a larger meter having adequate capacity.
If copper supply lines are used, they must be internally tinned and certified for gas service.
Gas Pressure Regulation
Main line gas pressure to the water heater should be between a maximum 14 in (3.5 kPa) W.C. and a
minimum supply pressure as shown on the rating plate. The inlet gas pressure must not exceed the maximum
value. In some installations, a regulator sized for the input rating of the water heater will need to be installed
just ahead of the inlet gas connection to the water heater to reduce excess gas pressure or surges in gas
pressure. BEFORE PLACING THE WATER HEATER IN OPERATION, CHECK FOR GAS LEAKAGE. USE
SOAP AND WATER SOLUTION OR OTHER MATERIAL ACCEPTABLE FOR THE PURPOSE OF
LOCATING GAS LEAKS.
DO NOT use matches, candles, flame or other sources of ignition for this purpose.
The water heater is NOT intended for operation at higher than 14 inch water column (½ psi) supply gas pressure.
Higher gas supply pressures require supplemental reducing service regulation. Exposure to higher gas supply
pressure may cause damage to the gas controls, which could result in fire or explosion. If overpressure has
occurred, such as through improper testing of gas lines or emergency malfunction of the supply system, the gas
valve must be checked for safe operation. Make sure that the outside vents on the supply regulators and the safety
vent valves are protected against blockage. These are parts of the gas supply system, NOT the water heater.
Water heaters are heat-producing appliances. To avoid damage or injury there must be no materials stored against
the water heater or direct vent system, and proper care must be taken to avoid unnecessary contact (especially by
children) with the water heater and direct vent system. UNDER NO CIRCUMSTANCES SHOULD FLAMMABLE
MATERIALS, SUCH AS GASOLINE OR PAINT THINNER BE USED OR STORED IN THE VICINITY OF THIS
WATER HEATER OR IN ANY LOCATION FROM WHICH FUMES COULD REACH THE WATER HEATER.
Installation or service of this water heater requires ability equivalent to that of a licensed tradesman in the field
involved. Plumbing, air supply, venting, gas supply and electrical work are required.
Light the unit in accordance with the operating instructions label attached to the water heater.
Under NO circumstances should the input rate exceed the input rate shown on the water heater rating plate. Over
firing could result in damage or sooting of the water heater.
If the unit is exposed to the following, DO NOT operate water heater until all corrective steps have been made by a
factory authorized independent service contractor or qualified service professional.
1. Flooding to or above the level of the burner or controls
3. External firing
5. Firing without water
NEVER OPERATE THE WATER HEATER WITHOUT FIRST BEING CERTAIN IT IS FILLED WITH WATER AND
A TEMPERATURE AND PRESSURE RELIEF VALVE IS INSTALLED IN THE RELIEF VALVE OPENING OF THE
WATER HEATER.
DO NOT run out of propane gas. Damage to the water heater may occur.
WARNING
WARNING
WARNING
2. External firing
4. Damage
6. Sooting
WARNING
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