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OV500 SERIES RACK OVEN - SERVICE PROCEDURES AND ADJUSTMENTS
7. With a burner flame established and all other gas equipment on the supply line lite, adjust the manifold
pressure as indicated in the following charts or as indicated on the oven data plate
.
NOTE: Accurate gas pressure adjustment can only be made with the burner on.
NOTE: Turn adjustment screw Clockwise
to increase the pressure, Counterclockwise to decrease pressure.
OV500G1
MANIFOLD PRESSURE
NATURAL GAS PROPANE GAS
BTU/HR Nat. Gas 180,000 Propane Gas 180,000
W.C. 3.5" W.C. 10.0" W.C.
kCAL/HR 45,400 45,400
cm W.C. 8.89 25.40
Mj/HR 190 190
kPa 0.87 2.49
OV500G2
MANIFOLD PRESSURE
NATURAL GAS PROPANE GAS
300,000 BTU/HR 350,000 BTU/HR 300,000 BTU/HR 350,000 BTU/HR
W.C. 3.0" 4.0" 8.0" 10.0"
kCAL/HR 75,600 88,200 75,600 88,200
cm W.C. 7.61 10.15 20.32 25.40
Mj/HR 317 370 317 370
kPa 0.75 1.00 2.00 2.49
NOTE: The following diagram represent a typical style of the combination valve.
F25361 (January 2010)Page 35 of 60