Minimum Differential Pressure; Pilot Burner Location; Differential Pressure Switch Settings; Differential Pressure Measurement - Burnham PVG Installation, Operating And Service Instructions

Table 14: Pilot Burner Location
Boiler Model
PVG-3
PVG-4
PVG-5
PVG-6
PVG-7
PVG-8
PVG-9
* Main burners numbered left to right as viewed from front of boiler.
3. Start boiler and read Pressure on Manometer
when boiler water temperature reaches operating
temperature. Refer to Table 15 for minimum
readings.
NOTE: If switch drops-out before boiler reaches
temperature or if pressure differential readings are
below minimums shown in Table 15, check for
cracks in hose or contact your nearest U.S. Boiler
representative.
4. Stop boiler, remove manometer and reconnect hoses
to differential pressure switch. See Figures 28 and
31.
Table 15: Differential Pressure Switch Settings
Boiler Model
PVG-3
PVG-4
PVG-5
PVG-6
PVG-7
PVG-8
PVG-9
50
Main Burner with Pilot Bracket
2
3
4
5
6
7
8
Sea Level to 4,999 Ft.
1.32" w.c.
1.17" w.c.
1.17" w.c.
.88" w.c.
.80" w.c.
.88" w.c.
.88" w.c.
Pilot Burner Located Between Main Burners *
Figure 1: Differential Pressure Measurement

Minimum Differential Pressure

5,000 - 10,000 Ft. Elevation
2 & 3
3 & 4
4 & 5
5 & 6
6 & 7
7 & 8
8 & 9
.80" w.c.
.65" w.c.
.65" w.c.
.35" w.c.
.30" w.c.
.35" w.c.
.35" w.c.