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Smith Cast-Iron Boilers 19A-04 (520 MBH)

Manufacturer:    Smith Cast-Iron Boilers
Appliance Series:    19A
Appliance Model:    19A-04
Burner Model:    301GAS
Difusser:    S
Air Tube:    14" B
OEM Air Tube #:    99728
Insertion Depth:    4 3/4
Input MBH:   520
Natural Gas Orifice:    17/32 (.531)
Propane Orifice:    13/32 (.406)
Air Setting:   45%
Air Band:   4 slot
Head Bar:   -
Air Shutter:    center
Manifold Pressure:    3.5
NOTES:    For 19A series with 301GAS & 601GAS use front plate # 3565 (order from Smith)
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