• Installation •
Always use a wrench on the manifold to | Figure 17 | Gas supply connection to GV |
prevent it from twisting when installing or |
| boiler gas manifold |
removing external gas piping. Failure to do |
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so could damage the blower housing |
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assembly, resulting in a leakage of |
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Service valve
(by others)
Ground joint union
(by others)
½" NPT
Blower housing cover
Manifold
Gas valve
Drip leg (by others)
Nipple length must provide at least 3 inches between the cap and tee, per ANSI Z223.1.
Outlet hex fitting
85031
Gas valve outlet hex fitting is a LEFT- HAND thread.
Gas pipe |
| Capacity of pipe for pipe size of: |
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| Table 3 | Pipe capacity for 0.60 specific | ||||
length |
| (Capacity in cubic feet gas per hour) |
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| gravity natural gas | ||||
(feet) | ½" |
| ¾" | 1" | 1¼" |
| 1½" |
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10 | 132 |
| 278 | 520 | 1050 |
| 1600 |
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20 | 92 |
| 190 | 350 | 730 |
| 1100 |
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30 | 73 |
| 152 | 285 | 590 |
| 860 |
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40 | 63 |
| 130 | 245 | 500 |
| 760 |
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50 | 56 |
| 115 | 215 | 440 |
| 670 |
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75 | 45 |
| 93 | 175 | 360 |
| 545 |
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|
100 | 38 |
| 79 | 150 | 305 |
| 460 |
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|
150 | 31 |
| 64 | 120 | 250 |
| 380 |
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Part number | 39 |
