Modine Manufacturing 6-558.6 사용자 설명서
INSTALLATION
Horizontal Two Pipe Venting
1. When horizontal vents pass through a combustible wall (up
to 8 inches thick), the vent passage must be constructed
and insulated as shown in Figure 10.
and insulated as shown in Figure 10.
2. The termination of horizontally vented system must extend
12 inches beyond the exterior surface of an exterior wall.
3. The combustion air pipe must be a minimum of 16 inches
below the vent pipe, and 24 inches from the exterior wall.
4. Support the vent and combustion air pipe as shown in
Figure 10.
Piping
1. Installation of piping must be in accordance with local
codes, and ANSI Z223.1, “National Fuel Gas Code,” or
CAN/CGA-B149 in Canada.
CAN/CGA-B149 in Canada.
2. Piping to units should conform with local and national
requirements for type and volume and gas handled, and
pressure drop allowed in the line. Refer to Table 5, to
determine the cubic feet per hour (cfh) for the type of gas
pressure drop allowed in the line. Refer to Table 5, to
determine the cubic feet per hour (cfh) for the type of gas
and size of unit to be installed. Using this cfh value and the
length of pipe necessary, determine the pipe diameter from
Table 2. Where several units are served by the same main,
the total capacity, cfh, and length of main must be
considered. Avoid pipe sizes smaller than 1/2". Table 2
allows for the usual number of fittings with a 0.3; W.C.
pressure drop. Where the gas supplied has a specific
gravity other than 0.60, apply the multiplying factor as given
in Table 3.
length of pipe necessary, determine the pipe diameter from
Table 2. Where several units are served by the same main,
the total capacity, cfh, and length of main must be
considered. Avoid pipe sizes smaller than 1/2". Table 2
allows for the usual number of fittings with a 0.3; W.C.
pressure drop. Where the gas supplied has a specific
gravity other than 0.60, apply the multiplying factor as given
in Table 3.
3. After threading and reaming the ends, inspect piping and
remove loose dirt and chips.
4. Support piping so that no strains are imposed on unit or
controls.
5. Use two wrenches when connecting piping to unit controls.
Length
Diameter of Pipe — Inches
of Pipe
in Ft.
1/2
3/4
1
1-1/4
1-1/2
15
76
218
440
750
1220
30
73
152
285
590
890
45
44
124
260
435
700
60
50
105
190
400
610
75
97
200
345
545
90
88
160
320
490
105
80
168
285
450
120
158
270
420
150
120
242
380
180
128
225
350
210
205
320
240
190
300
270
178
285
300
170
270
450
140
226
600
119
192
Length
Diameter of Pipe — Inches
of Pipe
in Ft.
2
3
4
6
8
15
2480
6500
12880
38700
79000
30
1650
4700
9700
27370
55850
45
1475
3900
7900
23350
45600
60
1150
3250
6800
19330
39500
75
1120
3000
6000
17310
35300
90
930
2600
5400
15800
32250
105
920
2450
5100
14620
29650
120
860
2300
4800
15680
27920
150
710
2000
4100
12240
25000
180
720
1950
4000
11160
22800
210
660
1780
3700
10330
21100
240
620
1680
3490
9600
19740
270
580
1580
3250
9000
18610
300
545
1490
3000
8500
17660
450
450
1230
2500
7000
14420
600
380
1030
2130
6000
12480
Table 2
Gas Pipe Capacities
Gas Pipe Capacities
In Cu. Ft. per Hour with Pressure Drop of 0.3 in W.C. with Specific Gravity 0.60.
Table 3
Specific Gravity Conversion Factors
Specific Gravity Conversion Factors
Multiplying factors to be used with Table 1 when the specific gravity of gas is
other than 0.60.
other than 0.60.
Natural Gas
Propane Gas
Specific
Specific
Gravity
Factor
Gravity
Factor
0.55
1.04
1.50
0.633
0.60
1.00
1.53
0.626
0.65
0.962
1.60
0.612
Figure 9
Horizontal Venting - Two Pipes
Horizontal Venting - Two Pipes
METAL
SLEEVE
FIBER GLASS
INSULATION
MIN. 2"
2" MIN.
VENT TERMINATION
SUPPORT BRACKET
SUPPORT BRACKET
(where required)
(Make from 1" x 1" steel angle)
9"
9"
45
1"
METAL
SLEEVE
2" MIN.
VENT PIPE
DIAMETER
DIAMETER
METAL FACE
PLATE
1"
Figure 10
Exhaust Vent Construction Through Combustible Walls
and Support Bracket
Exhaust Vent Construction Through Combustible Walls
and Support Bracket
7
CAUTION
Gas pressure to unit heater controls must never exceed 14"
W.C. (1/2 psi).
When leak testing the gas supply piping system, the appliance
and its combination gas control must be isolated during any
pressure testing in excess of 14" W.C. (1/2 psi).
The appliance should be isolated from the gas supply piping
system by closing its field installed manual shut-off valve.
W.C. (1/2 psi).
When leak testing the gas supply piping system, the appliance
and its combination gas control must be isolated during any
pressure testing in excess of 14" W.C. (1/2 psi).
The appliance should be isolated from the gas supply piping
system by closing its field installed manual shut-off valve.