• Installation •
Ib Prepare boiler location — codes & altitude
Installations must follow these codes:
•Local, state, provincial, and national codes, laws, regulations and ordinances.
•National Fuel Gas Code, ANSI Z223.1- latest edition.
•Standard for Controls and Safety Devices for Automatically Fired Boilers, ANSI/ASME
•National Electrical Code.
•For Canada only: CAN/CGA B149.1 or B149.2 Installation Code and C.S.A. C22.1 Canadian Electrical Code Part 1 and any local codes.
High altitude installations
The GV boiler gas manifold and controls met safe lighting and other performance criteria when boiler underwent tests specified in ANSI Z21.13 — latest edition.
GV boiler controls automatically reduce input with increasing altitude. See Table 1 for estimated input at altitude as a percentage of sea level input. Multiply the boiler sea level input by this percentage to obtain the estimated high altitude input. Note that the length of the venting system will also have a minor impact on input. Refer to the vent supplement for further information.
No modifications to the boiler should be necessary for installations up to 5,500 feet above sea level. For higher elevations, the air pressure switch must be changed to a special high altitude switch. Refer to the high altitude kit instructions, manual Section IId. Note that the gas valve outlet pressure must be checked (and adjusted if necessary) in accordance with manual Section VIIf.
Table 1 |
| Altitude | % Sea level input | |
|
| (feet) | ||
Estimated GV input at altitude |
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1,000 | 97 | |||
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| 2,000 | 93 | |
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| 3,000 | 90 | |
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| |
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| 4,000 | 87 | |
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| 5,000 | 83 | |
|
|
|
| |
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| 5,500 | 82 | |
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| 6,000 | 80 | |
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|
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| |
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| 7,000 | 77 | |
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| 8,000 | 74 | |
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| |
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| 9,000 | 72 | |
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| 10,000 | 69 | |
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At altitudes above 5,500 feet, GV boilers can be sidewall vented only when using direct vent (ducted combustion air). GV boilers can be vertically vented in any of the configurations shown in the vent supplements. Refer to vent supplements for more detail.
Part number | 9 |
