Dean 52 Series Installation & Operation Manual page 15

3.4 Gas Connections (cont.)
Regulating Gas Pressure
The fryer and shut-off valve must be disconnected from the gas supply during any pressure testing of
the system.
External gas regulators are not normally required on this fryer. A safety control valve protects the
fryer against pressure fluctuations. If the incoming pressure is in excess of ½" PSI (3.45 kPa/35
mbar), a step-down regulator will be required.
The fryer MUST be isolated from the gas supply-line system by closing its
individual, manual shut-off valve during any pressure testing of the gas supply-line
system at pressures equal to or less than ½" PSI (3.45 kPa/35 mbar).
The fryer and its individual shut-off valve must be disconnected from the gas supply piping system
during any pressure testing of the gas supply system, especially if the test pressures are in excess of
½" PSI (3.45 kPa/35 mbar).
A. Manifold Pressure: Your local service technician should check the manifold pressure with a
manometer.
1. Check the rating plate for manifold gas pressures. Natural gas units normally require 4"
WC, and propane units normally require 11" WC gas pressure.
2. Confirm that the arrow forged into the bottom of the regulator body, which indicates gas
flow direction, is pointed downstream towards the fryers. The air vent cap is also part
of the regulator and should not be removed.
3. If a vent line from the gas pressure regulator is used, it should be installed in accordance
with local codes or in the absence of local codes, with the National Fuel Gas Code,
ANSI Z223.1-(Latest Edition).
Use a diluted soap solution to find potentially dangerous gas leaks when making
B. Regulators: Gas regulators can be adjusted in the field, but no adjustments should be made
unless the regulator is out of adjustment, or serious pressure fluctuations are observed.
C. Only qualified service personnel should make adjustments to the regulators.
CAUTION
WARNING
new connections.
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