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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.
OFF
ON
INLET
OUTLET
GAS CONTROL KNOB
PRESSURE REGULATOR
ADJUSTMENT (UNDER CAP SCREW)
INLET
PRESSURE
TAP
VR8205
WIRING TERMINALS (2)
OUTLET
PRESSURE
TAP
Figure 27 - Manifold Pressure Measurement Detail
Figure 28 - Gas Valve
CHECK OUT PROCEDURE AND ADJUSTMENT
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 lique
fi
ed Petroleum
gases.
NOTICE
Regulator cover screw must be installed at all times un-
less adjusting manifold pressure. Firing rate and manifold
pressure must only be measured with cover screw
fi
rmly
installed.
Содержание GWB9-050IH-2
Страница 2: ...2 DIMENSIONS 2 2 Figure 1 Boiler Dimensions...
Страница 12: ...12 NEAR BOILER PIPING Figure 2 Single Zone Boiler Piping...
Страница 14: ...14 Figure 4 Two Zone Boiler Piping With Circulators NEAR BOILER PIPING...
Страница 15: ...15 NEAR BOILER PIPING Figure 5 Primary Secondary Piping And Wiring With Circulators And Domestic Hot Water...
Страница 19: ...19 Figure 9 Diaphragm Type Expansion Tank Piping NEAR BOILER PIPING...
Страница 20: ...20 Figure 10 Conventional Closed Type Expansion Tank Piping NEAR BOILER PIPING...
Страница 24: ...24 Figure 12 Roof Vent Intake Terminations COMBUSTION AIR AND VENT PIPE VENT AIR INTAKE...
Страница 32: ...32 Figure 21 Ladder Wiring Diagram ELECTRICAL WIRING...
Страница 34: ...34 Figure 23 Ladder Diagram for Figure 22 ELECTRICAL WIRING...
Страница 40: ...40 S9381A INTEGRATED BOILER CONTROL OPERATION AND ADJUSTMENTS Table 9 State Code Definitions...
Страница 41: ...41 S9381A INTEGRATED BOILER CONTROL OPERATION AND ADJUSTMENTS Figure 26 Sequence of Operation...
Страница 48: ...48 TROUBLESHOOTING Table 10 Error Codes...
Страница 55: ...55 NOTES...