Dunkirk XEB-4 - Electrical Wiring; Electric Power Supply Requirements; Thermostat Installation Guidelines

21
GAS SUPPLY PIPING
*Outside diameter:
The length of pipe or tubing should be measured from the gas
meter or propane second stage regulator.
Sediment
Trap
Manifold
Floor Line
Automatic
Gas Valve
Ground
Joint
Union
NATURAL GAS
Length of
Pipe - Ft.
Pipe Capacity - BTU Per Hour Input
Includes Fittings
½" ¾" 1" 1¼"
20 92,000 190,000 350,000 625,000
40 63,000 130,000 245,000 445,000
60 50,000 105,000 195,000 365,000
PROPANE GAS
Length of
Pipe - Ft.
Pipe Capacity - BTU Per Hour Input
Includes Fittings
Copper Tubing* Iron Pipe
⅝" ¾" ½" ¾"
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
!
!
WARNING
Never use a match or open ame to test for leaks.
Figure #11
GAS PIPING AT BOILER
CONNECTING THE GAS PIPING
Refer to Figure #11 for the general layout at the
boiler. It shows the basic ttings you will need. The
gas line enters the boiler from the right side.
PRESSURE
GAS
NATURAL PROPANE
MIN. SUPPLY 5" w.c. 11" w.c.
MAX. SUPPLY 14" w.c. 14" w.c.
MANIFOLD 3.5" w.c. 10" w.c.
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
liqueed petroleum gas.
3. Install ground joint union in gas supply line
between shut-off valve and boiler controls.
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 oor.
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.