High-Efficiency Commercial Gas Series - Service Manual
Technical Literature Department
8
Ashland City, Tennessee © 2008
Servicing should only be performed by a Qualified Service Agent
GAS VALVE 199 and 250 KBtu/hr MODELS
Pressure readings may be taken on the gas
valve by connecting a manometer to the
pressure ports on the valve. The manifold
pressure on this valve is 0”w.c. (0kPa) when
the water heater is running. Refer to the gas
pressure chart on page 4.
Note: Manometer tubing shown is not
supplied with the water heater.
Manifold
gas
Pressure
0” WC
(0kPa)
Supply
gas
pressure
WARNING: Do not attempt adjustments on
this gas valve. Contact the “help line” listed
on the water heater for assistance.
