48
Furnace
ELECTRICAL
Line Voltage (Measure
L1 to N
and
N to Ground
Voltage)
L - N
N - G
Secondary Voltage (Measure Transformer Output Voltage)
R - C
Blower Amps
BLOWER EXTERNAL STATIC PRESSURE
Return Air Static Pressure
IN. W.C.
Supply Air Static Pressure
IN. W.C.
Total External Static Pressure (Ig/- from the reading above, add total here)
IN. W.C.
TEMPERATURES
Return Air Temperature (Dry bulb / Wet bulb)
DB °F
WB °F
DB °F
WB °F
Heating Supply Air Temperature
DB °F
Temperature Rise
DB °F
Delta T (Difference between Supply and Return Temperatures)
DB °F
GAS PRESSURES
Gas Inlet Pressure
IN. W.C.
Gas Manifold Pressure (Low Fire)
IN. W.C.
Gas Manifold Pressure (High Fire)
IN. W.C.
Gas Type (NG) = Natural Gas / (LP) = Liquid Propane
Additional Checks
Check wire routings for any rubbing
Check for kinked pressure switch tubing.
Check flue elbow for alignment and clamp tightness.
Check screw tightness on blower wheel.
Check factory wiring and wire connections.
Check product for proper clearances as noted by installtion instructions
°F to °C formula: (°F - 32) divided by 1.8 = °C °C to °F formula: (°C multiplied by 1.8) + 32 = °F
Model Number
Serial Number
Cooling Supply Air Temperature (Dry bulb / Wet bulb)
