Gas Supply - Dunkirk 90-50 Installation, Operation & Maintenance Manual

Checking The Gas Piping
The boiler and its gas connection must be leak tested before placing
the boiler in operation. Open the manual shutoff valve. Test for leaks
by applying soap suds (or a liquid detergent) to each joint. Bubbles
forming indicate leak. CORRECT EVEN THE SMALLEST LEAK
AT ONCE.
Never use a match or open flame to test for
leaks.
20
40
60
92,000 190,000 350,000 625,000
63,000 130,000 245,000 445,000
50,000 105,000 195,000 365,000
818" 3/4" 1/2" 3/4"
20 131,000 216,000 189,000 393,000
40 90,000 145,000 129,000 267,000
60 72,000 121,000 103,000 217,000
* Outside diameter
Figure 12 - Gas Piping
_///S GAS SUPPLY
PIPING
MANUAL
SHUT=OFF
VALVE
SEDIMENT
TRAP
GROUND JOINT
UNION