User Guide
Manuals
Brands
AO Smith Manuals
Boilers
Burkay 528,000 BTU Output Electronic Ignition Hot Water Boiler (Nat Gas)
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20
20
HW-300, HW-399, HW-420, HW-500 & HW-670
(NA
TURAL GAS)
SINGLE ST
AGE I.I.D. - ROBERTSHA
W GAS V
AL
VE
HW-300, -399, -420, -520 & 670 (NA
TURAL
GAS ONL
Y) - U.S. MODELS
FIGURE 1
1B
1
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