Regulator adjustments for pres sure and lock-up
tests
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Test pressure switch operation on a 2-stage gas
furnace in both positive and negative pressures
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0.004 inH20 resolution less than 40 inches of
water: 0.04 inH20
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Seven units of pressure: inH20, mbar, kPa, and
psi, mmH20, mmHg, inHg
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Dual input and differential
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Auto power off after 20 minutes
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Autoranging
The BF20 is a dual Input Manometer with ±120
inH2O range and 0.001 inH2O high-resolution and
seven units of measure. The BF20 is high
efficiency gas and oil fired furnaces along with
condensing boilers require a manometer with
0.001 inches of water resolution to make proper
adjustments.