Connecting The Gas Piping; Checking The Gas Piping - Dunkirk XEB-2 Installation Manual

CONNECTING THE GAS PIPING

Refer to Figure #11 for the general layout at the
boiler. It shows the basic fittings you will need. The
gas line enters the boiler from the right side.
Figure #11
GAS PIPING AT BOILER
Automatic
Manifold Gas Valve
Floor Line
PRESSURE
MIN. SUPPLY
MAX. SUPPLY
MANIfOLD
The following rules apply:
1. Use only those piping materials and joining
methods listed as acceptable by the authority
having jurisdiction, or in the absence of such
requirements, by the National Fuel Gas Code,
ANSI Z223.1- latest revision. In Canada, follow
the CSA B149.1 and .2 Installation Codes for
Gas Burning Appliances and Equipment.
2. All pipe compound must be resistant to
liquefied petroleum gas.
3. Install ground joint union in gas supply line
between shut-off valve and boiler controls.
GAS SupplY pIpING
Ground
Joint
Union
Sediment
Trap
GAS
NATURAL PROPANE
5" w.c. 11" w.c.
14" w.c. 14" w.c.
3.5" w.c. 10" w.c.
!
Never use a match or open flame to test for leaks.
NATURAL GAS
Pipe Capacity - BTU Per Hour Input
Length of
Pipe - Ft.
½"
20 92,000
40 63,000
60 50,000
PROPANE GAS
Pipe Capacity - BTU Per Hour Input
Length of
Pipe - Ft.
Copper Tubing*
⅝"
20 131,000
40 90,000
60 72,000
*Outside diameter:
The length of pipe or tubing should be measured from the gas
meter or propane second stage regulator.
4. Install a sediment trap upstream of gas
controls.
5. Use two pipe wrenches when making the connection
to the gas valve to keep it from turning.
6. Install manual shut-off valve in vertical pipe
about 5 feet above floor.
7. Tighten all joints securely.
8. Propane gas connections should only be made
by a licensed propane installer.
9. Two-stage regulation should be used by the
propane installer.
10. Propane gas piping should be checked out by
the propane installer.

CHECKING THE GAS PIPING

Upon completion of piping, check right away for gas
leaks. Open the manual shut-off valve. Test for leaks
by applying soap suds (or a liquid detergent) to each
joint. Bubbles forming indicate a leak. CORRECT
EVEN THE SMALLEST LEAK AT ONCE.
21
WARNING
!
Includes fittings
1"
¾"
190,000 350,000
130,000 245,000
105,000 195,000
Includes fittings
Iron Pipe
¾" ½"
216,000 189,000
145,000 129,000
121,000 103,000
1¼"
625,000
445,000
365,000
¾"
393,000
267,000
217,000