Blodgett ZEPHAIRE-G Installation And Operation Manual page 16

Installation
Gas Connection
PRESSURE REGULATION AND TESTING
Zephaire-G ovens are rated at 60,000 BTU/Hr.
(17.6 kW) (63 MJ) 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
Min
W.C. 7.0
kPa 1.43
Manifold Pressure
Natural
W.C. 3.5
kPa .87
Inlet Pressure --- the pressure of the gas before
D
it reaches the oven.
Manifold Pressure --- the pressure of the gas
D
as it enters the main burner(s).
Min --- the minimum pressure recommended to
D
operate the oven.
Max --- the maximum pressure at which the
D
manufacturer warrants the oven's operation.
Gas Connection 2.5" (64 mm)
Propane
Max Min Max
10.5 11.0 13.0
2.61 2.74 3.23
Propane
10.0
2.49
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. 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 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 (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).
Gas Connection 3.75" (86 mm)
Figure 10
12