Blodgett DFG-100 XCEL Installation Manual page 8

UTILITY CONNECTION
GAS PRESSURE REGULATION AND TESTING
Each oven has been adjusted at the factory to operate with the type of gas specified on the rating plate.
Inlet Pressure
W.C.
kPa
Manifold Pressure
W.C.
kPa
• Inlet Pressure - the pressure of the gas before it reaches the oven.
• Manifold Pressure - the pressure of the gas as it enters the main burner(s).
• Min - the minimum pressure recommended to operate the oven.
• Max - the maximum pressure at which the manufacturer warrants the oven's operation.
Each oven is supplied with a regulator to maintain the proper gas pressure. The regulator is essential to the proper opera-
tion of the oven and should not be removed. It is preset to provide the oven with 3.5" W.C. (0.87 kPa) for natural gas and
10.0" W.C. (2.50 kPa) for Propane at the manifold.
DO NOT INSTALL AN ADDITIONAL REGULATOR WHERE THE OVEN CONNECTS TO THE GAS SUPPLY UNLESS
THE INLET PRESSURE IS ABOVE MAXIMUM.
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.
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 (13.85" W.C., 3.45 kPa).
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 (13.85" W.C., 3.45 kPa).
GAS CONVECTION OVENS
GAS RATINGS
Natural Gas
Min
7.0
1.742
3.5
.87
Gas Connection
2.5" (64 mm)
2.88" (73 mm) ES Models
3.375 (86 mm) DFG-200-ES & Zephaire 200-G-ES Models
Figure 9
8
Max Min
10.5 11.0
2.61 2.74
Gas Connection
3.75" (85.7 mm)
3" (76 mm) ES Models
Propane
Max
13.0
3.23
10.0
2.49
INSTALLATION