The Noble Combi Boiler gas manifold
and controls met safe lighting and other
performance criteria when the boiler
underwent tests specified in ANSI Z21.13
– latest edition.
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.
Installation must comply with:
• Local, state, provincial, and national codes, laws,
regulations, and ordinances.
• National Fuel Gas Code, ANSI Z223.1 – latest edition.
• National Electrical Code.
• For Canada only: B149.1 Installation Code, CSA C22.1
Canadian Electrical Code Part 1 and any local codes.
Before locating the boiler, check:
1. Check for nearby connection to:
• System water piping
• Venting connections
• Gas supply piping
• Electrical power
2. Locate the appliance so that if water connections should
leak, water damage will not occur. When such locations
cannot be avoided, it is recommended that a suitable
drain pan, adequately drained, be installed under the
appliance. The pan must not restrict combustion air
flow. Under no circumstances is the manufacturer to be
held responsible for water damage in connection with
this appliance, or any of its components.
3. Check area around the boiler. Remove any combustible
materials, gasoline and other flammable liquids.
4. The Noble Combi Boiler must be installed so that gas
control system components are protected from dripping
or spraying water or rain during operation or service.
5. If a new boiler will replace an 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.
6.
Check around the boiler for any potential air
contaminants that could risk corrosion to the boiler or
the boiler combustion air supply (see Table 1A on page
10). Prevent combustion air contamination. Remove
any of these contaminants from the boiler area.
WARNING
This appliance is certified as an indoor
appliance. Do not install the appliance
outdoors or locate where the appliance will
be exposed to freezing temperatures or to
temperatures that exceed 100°F.
Failure to install the appliance indoors
could result in severe personal injury,
death, or substantial property damage.
Provide clearances:
Clearances from combustible materials
1. Hot water pipes—at least 1/4" from combustible materials.
2. Vent pipe – at least 1" from combustible materials.
3. See FIG.’s 1-1 and 1-2 on page 8 for other clearance
minimums.
Clearances for service access
1. See page 9 for recommended service clearances. If you
do not provide the minimum clearances shown, it may
not be possible to service the boiler without removing it
from the space.
Closet and alcove installations
This appliance requires a special venting
system. The vent connection to the
appliance is made of CPVC. Field supplied
vent fittings must be cemented to the CPVC
fitting on the boiler. Use only the vent
materials, primer, and cement specified in
the manual to make the vent connections.
Failure to follow this warning could result
in fire, personal injury, or death.
For closet and alcove installations as
shown in FIG.’s 1-1 and 1-2, CPVC,
polypropylene or stainless steel vent
material must be used inside the structure.
The two ventilating air openings shown in
FIG. 1-1 are required for this arrangement.
Failure to follow this warning could result
in fire, personal injury, or death.
WARNING
WARNING
NOTICE
WARNING
A closet is any room the boiler is installed in which is less
than 93 cubic feet for NKC110 models, and 102 cubic feet for
NKC150 - 199 models.
An alcove is any room which meets the criteria for a closet
with the exception that it does not have a door.
Example:
Room dimensions = 4 feet long, 3 feet wide, and
7 foot ceiling = 4 x 3 x 7 = 84 cubic feet. This would be
considered a closet for a Noble Combi Boiler.
7
1
Determine boiler location
DO NOT install units in rooms or
environments that contain corrosive
contaminants (see Table 1A on page 10).
Failure to comply could result in severe
personal injury, death, or substantial
property damage.
WARNING
Installation & Service Manual
F I R E T U B E C O M B I
™
