UTICA BOILERS UB90-50 Installation Manual page 46

Figure 17 - Manifold Pressure Measurement Detail
The following steps and diagram indicate the location of the
connection points required to measure the manifold pressure.
The manifold pressure may be measured using a U-Tube Ma-
nometer or a Differential Pressure Gauge. The diagram shows
the connection of both measuring
devices. Only ONE DEVICE IS
REQUIRED to measure the mani-
fold pressure.
Remove the plug. Install the
appropriate barbed fitting and
connect the pressure side line
from the U-Tube Manometer or
Differential Pressure Gauge.
Refer to "CHECK OUT PROCE-
DURE AND ADJUSTMENTS"
in this manual when reading the
manifold pressure.
When measurement is completed,
disconnect the U-Tube Manome-
ter or Differential Pressure Gauge.
Be sure to reinstall the ⅛" plug,
using appropriate pipe thread sealant approved for use with
natural and liquefied Petroleum gases.
Figure 18 - Gas Valve
PRESSURE REGULATOR
ADJUSTMENT (UNDER CAP SCREW)
VR8205
INLET
PRESSURE
TAP
INLET
GAS CONTROL KNOB
CHECK OUT PROCEDURE AND ADJUSTMENT
WIRING TERMINALS (2)
OUTLET
PRESSURE
TAP
OUTLET
ON
OFF
NOTE: Regulator cover screw must be installed at all
times unless adjusting manifold pressure. Firing rate and
manifold pressure must only be measured with cover screw
firmly installed.
46