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Part number 550-100-026/0404
GAS-FIRED WATER BOILER SERIES 2 — Boiler Manual
6
Figure 1 Clearances required
Prepare boiler location
1
Installations must comply with:Installations must comply with:
Installations must comply with:Installations must comply with:
Installations must comply with:
• 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 CSD-1,
when required.
• National Electrical Code.
• For Canada only: B149.1 or B149.2 Installation Code,
CSA C22.1 Canadian Electrical Code Part 1 and any
local codes.
The Ultra boiler gas manifold and controls
met safe lighting and other performance
criteria when boiler underwent tests
specified in ANSI Z21.13 — latest edition.
Before locating the boiler, check:
1. Check for nearby connection to:
• System water piping
• Venting connections
• Gas supply piping
• Electrical power
2. Check area around boiler. Remove any combustible
materials, gasoline and other flammable liquids.
Failure to keep boiler area clear and free of
combustible materials, gasoline and other
flammable liquids and vapors can result in
severe personal injury, death or substantial
property damage.
3. The Ultra boiler must be installed so that gas control
system components are protected from dripping or
spraying water or rain during operation or service.
4. If new boiler will replace existing boiler, check for and
correct system problems, such as:
• System leaks causing oxygen corrosion or heat
exchanger cracks from hard water deposits.
• Incorrectly-sized expansion tank.
• Lack of freeze protection in boiler water causing system
and boiler to freeze and leak.
Provide clearances:
Clearances from combustible materials
1. Hot water pipes — at least ½" from combustible
materials.
2. Vent pipe — at least 0.20" from combustible
materials.
3. See Figure 1 for other clearance minimums.
Clearances for service access
1. See Figure 1 for recommended service clearances. If
you do not provide minimum clearances shown, it
might not be possible to service the boiler without
removing it from the space.
Ultra boilers, except the Ultra-310, may be
wall mounted (using special wall mount
kit) or floor mounted. No clearance is
required at the rear of the unit, either for
service or for clearance to combustible
surfaces.