Installation
Gas Connection
PRESSURE REGULATION AND TESTING
900 Series ovens are rated from 20,000 to 50,000 BTU/Hr. (6.4 to 14.6 kW/Hr.) per section. Each oven has been adjusted at the factory to operate with the type of gas specified on the rating plate.
Inlet Pressure
| Natural | Propane | ||||
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| Max | Min |
| Max |
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W.C. | 7.0 |
| 10.5 | 11.0 |
| 13.0 |
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kPa | 1.43 |
| 2.61 | 2.74 |
| 3.23 |
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Manifold Pressure |
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| Natural | Propane | ||||
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W.C. |
| 5.0 |
| 10.0 | ||
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kPa |
| 1.24 |
| 2.49 | ||
DInlet Pressure
DManifold Pressure
DMin
D Max
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 must be installed. It is preset to provide the oven with 3.5” W.C. (0.87 kPa) for natural gas and 10.5” W.C. (2.50 kPa) for Propane at the manifold.
DO NOT INSTALL AN ADDITIONAL REGULATOR WHERE THE OVEN CONNECTS TO THE GAS SUPPLY.
Prior to connecting the oven, gas lines should be thoroughly purged of all metal filings, shavings, pipe dope, and other debris. After connection, the oven should be checked for correct gas pressure.
Installation must conform with local codes, or in the absence of local codes, with the National Fuel Gas Code, NFPA54/ANSI Z223.1
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).
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