EN
Maintenance (Continued)
PUMP PRESSURE ADJUSTMENT:
While heater is operating, turn relief valve clockwise to
increase,
counterclockwise to decrease (see
Figure 11
). Use flat
blade
screwdriver to turn valve. Correct pump pressure is as
follows:
Models
Pump Pressure
Y015Y
3.0Psi(0.21bar)
Y020Y
3.5Psi(0.25bar)
Tolerance ± 10%
For best measurement of pressure, test with full tank
of
fuel.
Optimum pressure occurs when the nose
cone is cherry red and there are no extending
flames from the heater.
Figure 11.
Pump Pressure Adjustment
Wiring Diagrams
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