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MARATHONER GOLD & SILVERSTAR GAS CONVECTION OVENS SPECIFICATIONS
SPECIFICATIONS
GAS SUPPLY
The serial plate is located inside the lower front panel. It indicates the type of gas the unit is equipped to
burn. All Southbend equipment is adjusted at the factory. Check type of gas on serial plate.
These models are design-certified for operation on natural or propane gases. For natural gas, the regulator
is set to deliver a 4.5" W.C. pressure to the manifold. For propane gas, it is set to deliver 11" W.C.
If applicable, the vent line from the gas appliance pressure regulator shall be installed to the outdoors in
accordance with local codes, or in the absence of local codes, with the National Fuel Gas Code, ANSI
Z223.1, Natural Gas Installation Code, CAN/CGA-B149.1, or the Propane Installation Code CAN/CGA-
B149.2, as applicable.
This appliance should be connected ONLY to the type of gas for which it is equipped.
A 3/4" NPT line is provided at the rear for the gas connection. An adequate gas supply is imperative.
Undersized or low pressure lines will restrict the volume of gas required for satisfactory performance.
Fluctuations of more than 25% on natural gas or 10% on propane gas will create problems and affect
burner operating characteristics.
An adequate gas supply line to the unit should be no smaller than the inside diameter of the pipe from the
unit to which it is connected.
Purge the supply line to clean out dust, dirt, or other foreign matter before connecting the line to the unit.
All pipe joints and connections must be tested thoroughly for gas leaks. Use only soapy water for testing on
all gases. NEVER use an open flame to check for gas leaks. All connections must be checked for leaks
after the unit has been put into operation. Test pressure should not exceed 1/4" W.C.
Model Number # of Ovens Oven Depth Type of Gas Orifice Size # of Burners Total BTU
SLGS/12…
SLGB/12…
Single-Deck Shallow Propane 55 4 @ 18,000 BTU 72,000
SLGS/12…
SLGB/12…
Single-Deck Shallow Natural Gas 47 4 @ 18,000 BTU 72,000
GS/15…
GB/15…
Single-Deck Bakery Propane 55 5 @ 18,000 BTU 90,000
GS/15…
GB/15…
Single-Deck Bakery Natural Gas 47 5 @ 18,000 BTU 90,000
SLGS/22…
SLGB/22…
Double-Deck Shallow Propane 55 8 @ 18,000 BTU 144,000
SLGS/22…
SLGB/22…
Double-Deck Shallow Natural Gas 47 8 @ 18,000 BTU 144,000
GS/25…
GB/25…
Double-Deck Bakery Propane 55 10 @ 18,000 BTU 180,000
GS/25…
GB/25…
Double-Deck Bakery Natural Gas 47 10 @ 18,000 BTU 180,000
OPERATOR’S MANUAL 1181887 REV 3 PAGE 5