Middleby Cooking Systems Group PS770 사용자 설명서

14

Certain safety code requirements exist for the installation 

of gas ovens; refer to the beginning of Section 2 for a list of 

the installation standards. In addition, because a the oven is 

equipped with casters, the gas line connection shall be made 

with a connector that complies with the Standard for Connectors 

for Movable Gas Appliances, ANSI Z21.69 (in U.S.A.), as well 

as a quick-disconnect device that complies with the Standard 

for Quick-Disconnect Devices for Use With Gas Fuel, ANSI 

Z21.41 (in U.S.A.).

Four items have to be changed, to change the oven to LP:
1.  Adjust internal burner air shutters.
2.  Replace main Orifices
3.  Replace (and adjust) the spring in the main valve (see LP 

kit)

4.  Adjust modulating valve bypass settings.
Disconnect the manifold unions closest to the main burner, and 

remove the manifold assemblies (four screws each). Remove the 

addition four screws holding the burner cores and slide out each 

burner core (leaving the ignition and sense wires connected). 

Adjust the internal air shutters fully open, and replace the cores.
Replace the main orifices on the manifold assemblies with the 

LP units, and replace the manifold assemblies. Reconnect the 

unions. Replace the valve spring with the LP spring, and adjust 

the downstream pressure to get 7″ WC.
Adjust the bypass screws in the side of each modulating valve 

to approximately 1/6 turn from fully closed. If this setting is too 

low, the burners will shut off when trying to modulate. If it is 

too open, the unit will tend to gradually raise up in temperature 
at standby.

Gas Burner

Burner/Blower Motor