Raypak B0109 - Manual (Page 33)

33
BURNER PRESSURE ADJUSTMENT
GAS INLET PRESSURE
IMPORTANT – CHECK the gas supply pressure at the inlet to the water heater with the water heater and all other
gas burning appliances in the premises operating (burners alight). The minimum gas supply pressures are:
Natural Gas - 1.13 kPa Propane - 2.75 kPa
If this minimum cannot be achieved, it may indicate the meter or the gas line to the water heater is undersized. It is
important to ensure that an adequate gas supply pressure is available to the water heater when other gas burning
appliances, on the same gas supply, are operating.
GAS PRESSURE ADJUSTMENT
109 On/Off Models
To adjust the burner pressure on a water heater with a White Rodgers 36G22 Type 210 gas valve proceed as
follows:
• Remove the screw from the outlet pressure tap.
• Attach a manometer to the outlet pressure tap.
• Remove the cap from the pressure regulator adjuster.
• With the main burner operating, adjust the pressure regulator (clockwise
to increase or anti-clockwise to decrease) to achieve the burner pressure
as specified on the rating label (refer to “Location of Controls” on
page 29).
• Turn off the water heater.
• Replace the cap on the pressure regulator adjuster.
• Disconnect the manometer and replace the pressure tap screw and washer.
• Check for gas leaks, using soapy water.
147 On/Off Models
To adjust the burner pressure on a water heater with a Honeywell Smart
Valve, proceed as follows:
• Remove the screw and washer from the outlet pressure tap.
• Attach a manometer to the outlet pressure tap.
• Remove the cap from the pressure regulator adjuster.
• With the main burner operating, adjust the pressure regulator (clockwise to
increase or anti-clockwise to decrease) to achieve the burner pressure as
specified on the rating label (refer to “Location of Controls” on page 29).
• Turn off the water heater.
• Replace the cap on the pressure regulator adjuster.
• Disconnect the manometer and replace the pressure tap screw and washer.
• Check for gas leaks, using soapy water.
Regulator Cap Pressure Tap
Pressure Tap
Regulator Cap