Bradford White M-I-MH40T6FLX - Manual (Page 16)

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Gas Conversion Instructions
Unless specifically ordered for operation on natural gas, this water heater is
normally equipped for operation on liquefied petroleum (LP) gas but may be
converted by following these gas conversion instructions.
Caution: Make sure gas to be supplied to this water heater following the
conversion matches the gas being converted to.
CAUTION
All gas conversions must be performed by qualified service personnel only.
To convert from natural gas to LP gas
1. Depress and rotate gas control knob clockwise
to the “OFF” position.
2. Change main burner regulator by removing cap from gas regulator.
Depress and rotate knob clockwise to NAT. setting using a
screwdriver. Replace cap.
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