Installation 
Gas Connections
PRESSURE REGULATION AND TESTING
The gas pressure to the appliance must be rated for each appliance while the burners are on. A suf- ficient gas pressure must be present at the inlet to satisfy these conditions. Refer to the table below for correct gas pressure.
Each appliance has been adjusted at the factory to operate with the type of gas specified on the rat- ing plate attached to the right side of the ap- pliance.
Each oven is supplied with a regulator to maintain the proper gas pressure. The regulator is essen- tial to the proper operation of the oven and should not be removed.
DO NOT INSTALL AN ADDITIONAL REGULATOR WHERE THE UNIT CONNECTS TO THE GAS SUPPLY UNLESS THE INLET PRESSURE IS GREATER THAN 14” W.C. (1/2 PSI) (37mbar).
The oven and its individual shutoff valve must be disconnected from the gas supply piping system during any pressure testing of that system at test pressures in excess of 1/2 psig (3.45kPa).
The oven must be isolated from the gas supply piping system by closing its individual manual
shutoff valve during any pressure testing of the gas piping system at test pressures equal or less than 1/2 psig (3.45kPa).
Prior to connecting the appliance, gas lines should be thoroughly purged of all metal filings, shavings, pipe dope, and other debris. After con- nection, the appliance must be checked for cor- rect gas pressure.
U.S. and Canadian Installations
Installation must conform with local codes, or in the absence of local codes, with the National Fuel Gas Code, NFPA54/ANSI Z223.1
General Export Installations
Installation must conform with Local and National installation standards. Local installation codes and/ or requirements may vary. If you have any questions regarding the proper installation and/or operation of your appliance, please contact your local distributor. If you do not have a local distributor, please call Blodgett Combi at
GAS PRESSURE
Gas | Inlet |
| Orifice Size at Sea Level | Manifold Pressure | ||
Type | Pressure |
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| Hot Air | Steam | Hot Air | Steam | ||
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U.S. and Canadian Installations |
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Natural |
| 1/16” | #58 | 3.5” W.C. | 3.5” W.C. | |
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| .0625” dia | .042” dia |
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Propane |
| #62 | #70 | 10” W.C. | 10” W.C. | |
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| .0380” dia | .0280” dia |
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