Power Flame C2-OB - Page 40

ORIFICE (A) LIMITING ORIFICE (B) APPROXIMATE ORIFICE PRESSURE
IDENTIFICATION INSIDE DIAMETER INCHES (INCHES W.C.) OR TEE PRESSURE
I.P.S.SHOULDER IF NO ORIFICE SIZE IS SHOWN
NOMINAL O.D. INCHES
Gas Burner Orifice Sizing Information (See page 37, Figure 38 for side orifice detail.)
Table 10 (Continued)
BURNER MBTU
MODEL INPUT NATURAL GAS PROPANE GAS NATURAL GAS PROPANE GAS
C3-G(O)-25B
With ADJ
Premix Tube
50 9/32 Holes
C2-G(O)
With
Standard
Nozzle
Mix Tube
40 11/64
C3-G(O)
With
Standard
Nozzle
Mix Tube
50 #10 Holes
C4-G(O)
With
Standard
Nozzle
Mix Tube
60 7/32 Holes
C5-G(O)
With
Standard
Nozzle
Mix Tube
60 7/32 Holes
C5-G(O)-30B
C6-G(O)-30
C7-G(O)-30(B)
C8-G(O)-30
Require adjustable premix tubes. Gas pressure data for these burners is included with shipment.
(A) Limiting orifices are not generally used on natural gas for
higher ratings of On/Off, Low-High-Off, Low-High-Low units
or any ratings of modulating units as the butterfly functions
as a variable orifice. Modulating L.P. gas units require a
properly sized limiting orifice.
(B) Approximate pressure for initial start-up. Final pressure
should be determined after checking actual flow with gas
meter. Stack temperature, CO
2
, O
2
and firebox pressure
will help in determining actual input when gas meter is not
available for this unit.
Consideration should be given to magnitude of furnace
pressure. Furnace pressure must always be added to above
orifice pressures, which are based on neutral furnace
pressure.
Burners equipped with optional adjustable premix tubes will
provide flows shown at slightly lower pressures. Most fixed
premix tubes will require slightly higher pressures. When
available supply pressure is too low to provide above, orifice
may be enlarged or removed and proper adjustment made
on gas pressure regulator.
Table 11
Pilot Orifice Schedule
BURNER
MODEL
DRILL SIZE
NATURAL
GAS
PROPANE
GAS
C1-G(O)
C2-G(O)
C3-G(O)
C4-G(O)
C5-G(O)
C5-G(O)-B
C6-G(O)
BURNER
MODEL
DRILL SIZE
NATURAL
GAS
PROPANE
GAS
Standard 6" Fan
Optional
7x3 or 7
5
/
8
x 3
1
/
2
Fan
Standard 7x3 Fan
Standard 7
5
/
8
x 3
1
/
2
Fan
Optional
8
3
/
8
x 3
1
/
2
Fan
Standard 8
3
/
8
x 4
1
/
2
Fan
Standard 9x4 or 9x5
1
/
2
Fan
Standard 10
3
/
4
x 5
1
/
2
Fan
Standard 10
3
/
4
x 5
1
/
2
Fan
Standard 10
3
/
4
x 5
1
/
2
Fan
#36 #48
#30 #48
#36 #48
#36 #48
#36 #48
#30 #48
#30 #48
#30 #48
5
/
32
C7-G(O)
C8-G(O)
Standard 12
5
/
8
x 5 Fan
Standard 22 x 2
3
/
8
Fan
5
/
32
5
/
32
5
/
32
5
/
32
5
/
32
5
/
32
5
/
32
Optional
9x4 Fan
1300 2 13/16 17/32 3.2 4-5
1400 2 7/8 35/64 3.0 4-5
1500 2 1 9/16 3.0 4-5
1600 2 1-1/16 37/64 3.0 4-5
1700 2 1-1/8 19/32 3.0 4-5
1800 2 1-1/4 39/64 3.0 4-5
1900 2 15/16 5/8 3.0 4-5
2000 2 NONE 41/64 3.0 4-5
2100 2 NONE 21/32 3.2 4-5
2200 2 NONE 43/64 3.4 4-5
2300 2 NONE 11/16 3.5 4-5
2400 2 NONE 45/64 3.6 4-5
2500 2 NONE 23/32 3.8 4-5
2750 2 NONE 3/4 4.2 4-5
3000 2 NONE 25/32 4.8 4-5
3080 2 NONE 51/64 5.0 4-5
2750 2
1
/
2
1-5/16 3/4 3.5 4-5
3000 2
1
/
2
1-27/64 25/32 3.5 4-5
3250 2
1
/
2
1-5/8 13/16 3.5 4-5
3500 2
1
/
2
NONE 27/32 3.3 4-5
3750 2
1
/
2
NONE 7/8 3.7 4-5
4000 2
1
/
2
NONE 29/32 4.3 4-5
4250 2
1
/
2
NONE 15/16 4.8 4-5
4500 2
1
/
2
NONE 31/32 5.4 4-5
4718 2
1
/
2
NONE 1 5.8 4-5
4250 2
1
/
2
1-5/8 15/16 3.5 4-5
4500 2
1
/
2
1-29/32 31/32 3.3 4-5
4750 2
1
/
2
2 63/64 3.4 4-5
5000 2
1
/
2
NONE 1-1/64 3.5 4-5
5250 2
1
/
2
NONE 1-1/32 3.7 4-5
4000 3 1-7/16 29/32 3.2 4-5
4500 3 1-9/16 31/32 3.4 4-5
5000 3 2 1-1/64 3.4 4-5
5500 3 NONE 1-1/16 3.5 4-5
6000 3 NONE 1-1/8 4.0 4-5
6500 3 NONE 13/32 5.0 4-5
7000 3 NONE 1-3/16 6.0 4-5
7500 3 NONE 1-7/32 6.8 4-5
7840 3 NONE 1-15/64 7.4 4-5
5500 3 NONE 1-1/16 1.9 4-5
6000 3 NONE 1-1/8 2.5 4-5
7000 3 NONE 1-3/16 3.2 4-5
8000 3 NONE 1-1/4 4.5 4-5
9000 3 NONE 1-3/8 6.5 4-5
10000 3 NONE 1-7/16 8.0 4-5
10500 3 NONE 1-1/2 8.1 4-5
C3-G(O)
Standard 8
3
/
8
x 3
1
/
2
Fan
#30 #48
C38
Rev.304