Blodgett DFG-100 XCEL - Manual (Page 13)

11
Installation
Gas Connection
Figure 9
Gas Connection 3” (76 mm)
Gas Connection 3” (76 mm)
PRESSURE REGULAtion AnD tEStinG
DFG-100 XCEL ovens are rated at 60,000 BTU/Hr. (17.5
kW) (63 MJ) per section at standard rate or 80,000 BTU/
Hr. (23.5 kW) (84 MJ) per section at high rate. Each oven
has been adjusted at the factory to operate with the type
of gas specified on the rating plate.
inLEt PRESSURE
natural Propane
Min Max Min Max
W.C. 7.0” 10.5” 11.0” 13.0”
kPa 1.742 2.61 2.74 3.23
MAniFoLD PRESSURE
natural Propane
W.C. 2.0” 3.5” 5.5” 10.0”
kPa 0.50 .87 1.37 2.49
• 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 oper-
ate the oven.
• Max - the maximum pressure at which the manufac-
turer 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 operation of the oven and should not be removed.
It is preset to provide the oven with 2.0 and 3.5” W.C.
(0.50 and 0.87 kPa) for natural gas and 5.5 and 10.0”
W.C. (1.37 and 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 thor-
oughly 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 discon-
nected from the gas supply piping system during any
pressure testing of that system at test pressures in ex-
cess 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 dur-
ing 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).