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d) Upper Channels:
1. TC-04 through TC-07 Boilers have one piece
Upper Channels. These are to be attached to
the top of the Front and Back Panels with
1/4"-20 round head machine screws, washers
and nuts.
2 TC-08 through TC-18 Boilers have two or three
piece Upper Channels. Install splice pieces with
the splice piece mounting hardware as shown
in Section 2, Assembly, Figures 2.6 & 2.7.
Attach the Upper Channels to the Splice Pieces
and to the Front and Back Panels with 1/4"-20
round head machine screws, washers, and nuts.
e) Side and Top Panels
1 Left Side Panels: Attach knobs to Left Side
Panels and install by inserting the top into the
Upper Channel and then dropping the Panel
into the space between the Lower Channel
and the Angle Rail.
2 Top Panels: Lay out the Top Panels so that
the knock-outs and openings correspond to
the piping and components on the assembled
boiler. After checking the layout, remove the
necessary knock-outs and install Top Panels.
f) Right Side Panels: Lay out the Right Side Panels
so that the knock-outs and openings correspond
to the piping and components on the assembled
boiler. After checking the layout, remove the
necessary knock-outs and install the Right Side
Panels by inserting them into the Upper
Channels then dropping them into the space
between the Lower Channels and Angle Rails.
I. FUEL PIPING
1. General:
a) Read the Burner Instruction Manual, supplied
with the boiler, or if the burner was purchased
separately, with the burner.
b) Review applicable code requirements for the
burner and fuel piping installations.
c) Install piping to allow for removal of burner and
access to combustion chamber for cleaning or
service.
2. Install Fuel Oil Piping:
a) Place the fuel oil tank and install the piping
in accordance with local codes or in the
absence of such codes with the codes listed
in paragraph 1.B.
b) Follow guidelines in the Burner Instruction
Manual for sizing oil lines. Never use smaller
than 1/2" [12.7 mm] OD copper tubing.
c) Install manual shut-off valves on the suction line
at the burner and at the oil line entrance to the
building.
d) If installing a shut-off valve on the return line,
you must provide an oil pressure relief valve
piped ahead of the shut-off valve and discharged
to the tank to prevent over-pressure conditions.
e) Install a two pipe oil distribution system when
possible. It will improve the reliability of the oil
delivery to the burner.
f) Use flare fittings when using copper tubing.
g) If the burner is above the top of the fuel oil tank,
install a check valve on the oil suction line at the
burner to prevent oil from evacuating the line.
h) If the burner is below the top of the tank, install
an anti-siphon device to prevent oil flow in the
event of an oil line break.
3. Install Gas Supply Piping
a) Size gas piping as required by Local codes or in
the absence of such authority, the codes listed in
paragraph 1.B.
b) Use Table 3.6 & 3.7 for sizing of piping for
natural gas with a system pressure drop of 0.3
inches of water [0.075 kPa].
INSTALLATION
Pipe
Length
(Feet)
1-1/4"
Pipe
1-1/2"
Pipe2"Pipe
2-1/2"
Pipe3"Pipe4"Pipe6"Pipe
10 1,050 1,600 3,050 4,800 8,500 17,500 44,000
20 730 1,100 2,100 3,300 5,900 12,000 31,000
30 590 890 1,650 2,700 4,700 9,700 25,000
40 500 760 1,450 2,300 4,100 8,300 22,000
50 440 670 1,270 2,000 3,600 7,400 20,000
60 400 610 1,150 1,850 3,250 6,800 18,000
70 350 560 1,050 1,700 3,000 6,200 17,000
90 320 490 930 1,500 2,600 5,400 15,000
100 305 460 870 1,400 2,500 5,100 14,000
150 250 380 710 1,130 2,000 4,100 11,500
Table 3.6: Capacity of Gas Supply Pipe in Cubic
Feet Per Hour of Natural Gas for a
Pressure Drop of 0.30 inches of water
Table 3.7: Capacity of Gas Supply Pipe in Cubic
Meters Per Hour of Natural Gas for a
Pressure Drop of 0.075 kPa
Pipe
Length
(meter)
1-1/4"
Pipe
1-1/2"
Pipe2"Pipe
2-1/2"
Pipe3"Pipe4"Pipe6"Pipe
3.05 30 45 86 136 241 496 1,246
6.10 21 31 59 93 167 340 878
9.14 17 25 47 76 133 275 708
12.19 14 22 41 65 116 235 623
15.24 12 19 36 57 102 210 566
18.29 11 17 33 52 92 193 510
21.34 10 16 30 48 85 176 481
27.43 9 14 26 42 74 153 425
30.48 9 13 25 40 71 144 396
45.72 7 11 20 32 57 116 326
Specific Gravity 0.50 0.55 0.60 0.65 0.70 0.75
Multiplier 1.10 1.04 1.00 0.96 0.93 0.90
Specific Gravity 0.80 0.85 0.90 1.00 1.10 1.20
Multiplier 0.87 0.84 0.82 0.78 0.74 0.71
Specific Gravity 1.30 1.40 1.50 1.60 1.70 1.80
Multiplier 0.68 0.66 0.63 0.61 0.59 0.58
Above ratings are based on natural gas with a specific gravity of 0.60 allowing
pressure drop of 0.3 inces of water (0.075 kPa). No allowance is needed for pipe
fittings. Apply the following factors to the above capacities for specific gravity
other than 0.60.