DF Series installation manual
13
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GAS INLET PRESSURE ADJUSTMENT
a.
Ensure that the gas inlet pressure complies with the following table:
Model
Natural gas
Propane
DF 25 / 50 / 75
Min: 6" w.c. (1493 Pa)
Min: 6" w.c. (1493 Pa)
Max: 14" w.c. (3484 Pa) Max: 8" w.c. (1991 Pa)
DF 100
Min: 8" w.c. (1991 Pa)
Min: 6" w.c. (1493 Pa)
Max: 14" w.c. (3484 Pa) Max: 8" w.c. (1991 Pa)
DF 150 / 200 / 300 /
375 / 450 / 550 / 700
Min: 13" w.c. (3235 Pa) Min: 11" w.c. (2734 Pa)
Max: 14" w.c. (3484 Pa) Max: 14" w.c. (3484 Pa)
For lower gas pressure consult manufacturer.
b.
Ensure that the air is completely purged from the gas piping.
c.
The inlet gas pressure difference from the burner operating at high fire and
the burner OFF should not exceed 1 inch of water column (249 Pa).
WARNING
WHILE THE BURNER IS IN OPERATION ENSURE THAT THERE ARE NO GAS LEAKS IN THE
ENTIRE PIPING USING A LEAK DETECTION FLUID OR A GAS DETECTOR.
DO NOT USE OPEN FLAME TO CHECK FOR LEAKS.