Dunkirk GWB9-050IH-2 Installation Instructions Manual page 44

Figure 27 - Manifold Pressure Measurement Detail
Following steps and diagram indicate location of the
connection points required to measure manifold pressure.
Manifold pressure may be measured using a U-Tube
Manometer or Differential Pressure Gauge. Diagram shows
connection of both measuring devices. Only ONE DEVICE IS
REQUIRED to measure manifold pressure.
Remove plug. Install appropriate barbed fi tting and connect
pressure side line from U-Tube Manometer or Differential
Pressure Gauge.
Figure 28 - Gas Valve
PRESSURE REGULATOR
ADJUSTMENT (UNDER CAP SCREW)
INLET
PRESSURE
TAP
INLET
GAS CONTROL KNOB
CHECK OUT PROCEDURE AND ADJUSTMENT
WIRING TERMINALS (2)
VR8205
ON
OFF
Refer to "Differential Air Pressure Switch Check" on page
49 when reading manifold pressure.
When measurement is complete, disconnect U-Tube
Manometer or Differential Pressure Gauge. Be sure to
reinstall ⅛" plug, using appropriate pipe thread sealant
approved for use with natural and liquefi ed Petroleum
gases.
Regulator cover screw must be installed at all times un-
less adjusting manifold pressure. Firing rate and manifold
OUTLET
PRESSURE
pressure must only be measured with cover screw fi rmly
TAP
installed.
OUTLET
44
NOTICE