VNG/VLP SERIES PRESSURE WASHER
OPERATOR’S MANUAL
17
Disconnect the pilot and ignition lines from the gas
valve. Disconnect union in main burner line below ther-
mostat. (Remove the nuts from the U-bolts, item 44
on page 20 on the VNG-S units.) Slide burner mani-
fold out through shell opening.
2. TO CLEAN BURNER JETS:
Select proper size drill for type gas involved. Use pin
vise to hold drill and ream out each jet orifice.
CAUTION: Do not ream out orifices to a larger size.
If the water heater will be exposed to freezing weather, an
anti-freeze solution should be circulated through the coil
by whatever means are available for the particular system
the water heater is used on.
To Adjust Pressure Regulator
Adjustment of the Pressure Regulator is not normally nec-
essary since it is preset at the factory. However, field ad-
justment may be accomplished as follows:
1. Manometer attachment may be accomplished at the
pressure tap plug.
2. Remove regulator adjustment screw cap (see Figure
6, page 15).
3. With small screwdriver, rotate adjustment screw “clock-
wise” to increase, or “counterclockwise” to decrease
pressure.
4. Replace regulator adjustment screw.