Installation; Gas Supply Piping - General - Power Flame C Series Installation & Operation Manual

Figure 7
The Director ® Annunciation System
The Director ® Annunciation System Mounted on
removable Total Access front panel door, complete with
quick disconnect electrical connection. The Director can
be removed from the panel box (see above) and kept in
operating mode by using the extended length umbilical
cord between the Director and panel box connections.
Annunciation Legend for Gas/Oil Burner with Low-High-
Low Operating Mode
1. Power On
2. Limit Circuit Closed
3. Flame Failure (Flame Safeguard Lockout)
4. Main Gas Valve - Low Position
5. Main Gas Valve - High Position
6. Main Oil Valve
7. High Fire Oil System
8. High Fire Air System

INSTALLATION

The installer should contact the local gas utility relative
to available supply pressures, limitations on allowable
pressures in the building, general piping requirements
and applicable codes, restrictions and regulations.
GAS SUPPLY PIPING
Gas piping should be sized to provide required pressure
at the burner train inlet manual shutoff cock, when
operating at the maximum desired fuel input.
All gas piping should be appropriately pressure tested to
ensure leak free operation. It is recommended that a dirt
pocket or trap be piped into the gas supply system just
ahead of the burner train inlet manual shutoff cock.
When testing with pressures higher than the maximum
pressure ratings of the gas train components, be sure to
isolate these components and test their piping for gas
leaks with correct pressures only. On some burners, the
Table 3
Capacity of Pipe - Natural Gas (CFH)
With Pressure Drop of 0.3" w.c. and Specific Gravity of 0.60
Pipe Length
In Feet
1 1 1 /
4
10 520 1050
20 350 730
30 285 590
40 245 500
50 215 440
60 195 400
70 180 370
80 170 350
90 160 320
100 150 305
125 130 275
150 120 250
175 110 225
200 100 210
Note: Use multiplier at right for other specific gravities and pressure drops.
Pipe Size - Inches (IPS)
1 1 / 2 2 1 /
2 2
1600 3050 4800
1100 2100 3300
890 1650 2700
760 1450 2300
670 1270 2000
610 1150 1850
560 1050 1700
530 990 1600
490 930 1500
460 870 1400
410 780 1250
380 710 1130
350 650 1050
320 610 980
1 2
Considerations of these types, as well as written
permits and other state, city and local codes, should be
discussed with and approved by the appropriate
governing bodies.
maximum main gas train and/or pilot gas train compo-
nents pressure is 1 / psig. (14" W.C.).
2
Refer to Table 3 for information relating to the sizing of
gas supply piping. These charts are based on the
general flow characteristics of commercially produced
black wrought iron pipe. If in doubt regarding flow
capabilities of a chosen line size, the next largest size
is recommended.
Refer to page 10, Figures 8 and 9 for typical gas piping
schematics to meet U.L. requirements in the C burner
firing ranges.
Table 3A
Correction Factors
Specific Gravity
Other Than 0.60
3 4
Specific Multiplier
8500 17500
Gravity
5900 12000
0.50
4700 9700
0.60
4100 8300
0.70
3600 7400
0.80
3250 6800
0.90
3000 6200
2800 5800 1.00
2600 5400 Propane - Air
2500 5100 1.10
2200 4500 Propane
2000 4100 1.55
1850 3800
Butane
1700 3500
2.00
7
5 4 6 8 3
Specific Drop
Than 0.3
Pressure Multiplier
Drop
1.10 0.1 0.577
1.00
0.2 0.815
0.926
0.3 1.00
0.867 0.4 1.16
0.817
0.6 1.42
0.775 0.8 1.64
1.0 1.83
0.740
2.0 2.58
3.0 3.16
0.662 4.0 3.65
6.0 4.47
0.547 8.0 5.15
C9
Rev.304