SECTION 2
INSTALLATION
VII. GAS SUPPLY FOR GAS HEATED OVENS
Pipe sizing
Please remember that the longer the pipe runs, the more the pressure drops. One 90° elbow equals a 1,2 m length of pipe.
Each oven section requires a nominal gas input as follows:
PS360U,L (per oven) | 40 kW |
50 kW |
Follow the recommended pipe sizing and meter sizing as indicated in the
The flexible hose furnished with the oven must be positioned as shown in Figure
NOTE: The recommended pipe sizes are larger than usually required to eliminate any operation problems. It is much less expensive to make the initial installation large enough to do the job rather than redoing the job later.
For lighting instructions, refer to
OPERATION Section of this manual.
CAUTION
DURING PRESSURE TESTING NOTE ONE OF THE
FOLLOWING:
1.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 pressure in excess of 1/2 psig (3.45 kPA).
2.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 supply piping system at test pressure equal to or less than 1/2 psig (3.45 kPA).
3.If the incoming pressure is over 50 mbars, a separate regulator must be installed before the 3/4” manual gas shutoff valve located at the rear outside of the oven.
WARNING:
To prevent damage to control valve regulator during initial turn on of gas, it is very important to open manual shutoff valve very slowly.
After the initial gas turn on, the manual shutoff valve must remain open except during pressure testing as outlined in the above steps or when necessary during service maintenance.
Appliance
Connection/
Male Nipple
To Gas
Supply Pipe
Shutoff Valve
90° ST
Elbow
Union
Flexible Hose
Correct Position
Figure