B&C Technologies DE Series Commercial - Manual (Page 19)

an elbow and a 1” flare x 1” NPT adapter fitting between the stainless steel gas connector and the
gas inlet of the machine as needed to prevent kinking.
Option 2:
Other approved piping:
Lengths under 25 feet (6.1m) use 1” approved tubing.
Lengths over 25 feet (6.1m) should use larger piping.
Pipe joint compounds that resist the action of gas must be used. DO NOT USE TEFLON
R
/PTFE
TAPE.
IMPORTANT: Be certain the dryer is configured for the type of gas being used. The gas type is
shown on the serial sticker on the electrical panel of the unit.
Inlet Pressure
Use a manometer to verify that the inlet pressure meets the following requirements:
Natural Gas service must be supplied at 4-14 inches of water column pressure.
LP Gas service must be supplied at 11-14 inches of water column pressure.
If the incoming gas pressure exceeds the above, install a locally obtained gas regulator that has
sufficient BTU capacity to supply the machine (Maxitrol 325-5AL for up to 300,000 BTU, 327-7L
for up to 900,000 BTU or equivalent). A chattering gas valve indicates improper line pressure, not
a faulty gas valve.
Manifold Pressure (Secondary)
Be sure to check the manifold pressure. Use a manometer to verify that the manifold pressure
matches the information on the serial sticker and the type of gas being used. A separate gas
regulator (locally obtained) must be installed if the incoming line pressure is greater than 14 inches
water column pressure.
1. Connect the manometer to the pressure connection on the gas valve (disconnect gas service).
2. Restore gas service, and determine the pressure while the burner is ignited. The pressure
must match the indicated manifold pressure on the serial sticker.
Gas Conversion Notice: Do not connect a machine configured for Natural Gas to LP Gas service or
vice-versa without a qualified service technician doing a proper conversion. After the reconfigura-
tion is complete, the manifold pressure must be verified. See Section 8.1 on page 39 for conversion
details.
3.4 Steam Connection
For best results, operate with a steam pressure of 90 psi (6.2 bar). The steam inlet and return are
located on the rear of the machine.
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