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Servicing should only be performed by a Qualied Service Agent
CONTROLS – GAS VALVE SUF 199 AND 250
Pressure readings may be taken on the gas valve by connecting to the pressure ports on the valve. The
manifold pressure on this valve is 0" WC (0 kPa) when the water heater is running. Refer to the gas
pressure chart on page 4.
Note: Tubing shown on pressure connections is installed for manometer connections. It is not supplied
with the water heater.
WARNING: Do not attempt adjustments on this gas valve unless you have a combustion analyzer.
Contact the “help line” listed on the water heater for assistance.