Installation, Venting, Combustion air intake – Fulton Caliber (CAL) Condensing Hydronic Boiler User Manual

Page 21: Combustion air supply from the boiler room

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Questions? Please Contact Your Local Manufacturer’s Representative

SECTION 2

CAL-IOM-2014-0129

INSTALLATION

2-15

!

WARNING

All information in this manual is for
reference and guidance purposes,
and does not substitute for required
professional training, conduct,
and strict adherence to applicable
jurisdictional/professional codes and
regulations.

Do not store or use gasoline or other
fl ammable vapors and liquids or
corrosive materials in the vicinity of
this or any other appliances. Cements
for plastic pipe should be kept away
from all sources of ignition. Proper
ventilation should be maintained to
reduce the hazard and to minimize
breathing of cement vapors.

Never use open fl ame or smoke from
a cigarette, cigar, or pipe as a testing
method during boiler installation,
operation, or maintenance.

DO NOT USE GASOLINE, CRANKCASE
OIL OR ANY OIL CONTAINING
GASOLINE. If in doubt, contact
your Fulton representative prior to
operation.

4

CAUTION

Some soaps used for leak testing are
corrosive. Rinse piping with clean water
after leak testing is completed.

Venting

Adhere to the following venting requirements:

1. The boiler can be installed with either sealed combustion or a conventional

venting arrangement. With either venting confi guration, the diff erence
in pressure readings at the boiler exhaust connection and air intake
connection cannot exceed 1.0” W.C. This equates to 70 feet (21.3 m) and 8
elbows when combining the distances on the air intake and exhaust with
the piping diameters matching the standard connections.

2. The pressure at the boiler exhaust connection must not exceed 0.05” W.C.

negative. This pressure must remain relatively constant throughout the
operation of the boiler.

3. The boiler should not be operated with a negative pressure in the boiler

room (unless there is sealed combustion [intake piped outside]). Pay
particular attention to other equipment installed in the boiler room such as
compressors and air handling units.

4. Consult your venting pipe supplier for assistance with sizing of vent

materials and other potentially required accessories.

Combustion Air Intake

An air intake fi lter may be purchased as an option. The air intake fi lter must
be inspected and, if required, cleaned and/or replaced on a monthly basis at a
minimum.

Combustion Air Supply From the Boiler Room

Adhere to the following for installation:

1. Adequate combustion air and ventilation must be supplied to the boiler

room in accordance with local codes and NFPA54/ANSI Z233.1, Section 5.3,
Air for Combustion and Ventilation.

2. The boiler room must meet the NFPA criteria for a non-confi ned space.

3. It is important to provide free access of air to the boiler. To burn fuel

properly, it requires one square inch opening of fresh air for every 1,000
BTU input of fuel (not less than 100 square inches).

4. Consistent proper ventilation of the boiler room is essential for good

combustion. Install two fresh air openings, one at a low level, within 12
inches (305 mm) from the fl oor but not less than 3 inches (76 mm), and
one at a higher level within 12 inches (305 mm) of the ceiling but not less
than 3 inches (76 mm) in the boiler room wall. This will provide a fl ow of
air to exhaust the hot air from the boiler room. Each opening must have
a minimum of 1 inch squared per 1000 Btu/hr, and be no less than 100
inches squared.

5. Consider the blocking eff ect of louvers and grills.

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