Pressure Regulator - Southbend 170A Owner's Manual

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ADJUSTMENTS
PRESSURE REGULATOR:
1. Locate l/S" pressure tap.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
A. For units with the "A" suffix, a 118" pressure tap is located on each of the two burner
manifolds. These manifolds are located behind the stainless steel panel above each broil-
ing section. Remove the two screws securing it. A second panel will be found behind the first.
Remove the five screws securing it and remove the second panel. The manifolds should now
be visible.
B. On "D" suffix units, the l/S" pressure tap is located in the blower compartment on the right
side of the unit, just after the pressure regulator. Remove the filter at the lower front of
the unit.
Turn "OFF" main gas supply to unit and all valves.
Remove the l/S" pipe plug and install a fitting appropriate for the connection of a manometer.
Connect the manometer.
Turn main gas "ON."
Light all pilots.
Turn all burners to full on.
Read manometer.
A. For units with "A" sufEx, the manometer should read 4" W.C. for natural gas and 10" W.C.
for propane gas.
B. For units with "D" suffix, the manometer should read 5" W.C. for natural gas and 11" W.C.
for propane gas.
If manometer reads correctly, go to Step 13.
If manometer shows incorrect reading, remove cap from top of regulator.
With a screwdriver, rotate regulator adjustment screw "clockwise" to increase, or "counter-
clockwise" to decrease pressure, until manometer shows correct reading.
Put cap on regulator.
Turn all burner valves "OFF."
Turn main gas "OFF."
Remove manometer fitting.
Replace plug in manifold.
Replace panels ("A" suffix units) or filter ("D" suffix units).
Turn main gas "ON."
Light all pilots
INFRA-RED BROILERS
SECilON THREE - SERVICE
PAGE 2
~itho in U.S.A.
8-92