Gas Piping - Dunkirk Q90 150 Installation Manual And Operating Instructions

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
requirements,by the NationalFuel Gas Code,
ANSI Z223.1-latest revision.In Canada,follow
the CAN/CGAB149.1and .2 InstallationCodes
for GasBurningAppliancesand Equipment.
2. Usepipejoint compound suitablefor liquefied
petroleumgason malethreadsonly.
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
_Jlncludes
Fittings _80utside Diameter
_obMPORTANT: length pipe or tubing should_
The
of
e measured from the gas meter or propane sec- I
nds!age r egu!a!or:
J
Refer to Figure 12 for the general layout at the boil-
er. The gas line enters the boiler through the left
side panel.
GAS PIPING
CONNECTION
The boiler is equipped with a ½" NPT connection on
the gas valve for supply piping and ½" NPT ball cock
for manual shut off. The following rules apply:
3. Use ground joint unions.
4. Install a sediment trap upstream of gas con-
trols.
5. Use two pipe wrenches when making the con-
nection to the gas valve to keep it from turning.
6. Install a manual shutoff valve in the vertical
pipe about 5 feet above floor outside the boiler
jacket.
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.
11. It is recomended to use a ½" union suitable
for natural and propane gas after the ball cock to
facilitate service on the unit.
After all connection have been made, check imme-
diately for leaks. 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.
1. Use only those piping materials and joining
methods listed as acceptable by the authority
having jurisdiction, or in the absence of such