Combustion Air Supply From The Boiler Room; Air Piped From Outside Boiler Room - FULTON Endura EDR 750 Nstallation, Operation And Maintenance Manual

INSTALLATION
to turn around)

Never direct fl ue stacks in a downward
direction.
TABLE 4 - GENERAL VENTING REQUIREMENTS
Endura Model Maximum
Number Negative Draft
EDR-1000 -0.04"W.C.
EDR-1500 -0.04 " W.C.
EDR-2000 -0.04 " W.C.
7. It is the responsibility of the designer and installer of
the venting system to guarantee the prevention of fl ue
gas recirculation (fl ue gases being drawn into a boiler's
combustion air supply, or fl ue gases moving backward
through an idle boiler).
8. Make-up air ventilation openings are recommended for
each installation size in Table 5.
TABLE 5 - MAKE-UP AIR VENTILATION OPENINGS
Total Input of Boiler
1000 BTU/HR
(kW)
1000 (293)
1500 (439)
2000 (586)
9. For multiple boiler installations, multiply the number of
boilers by required free area per boiler.
10. The installation of exhaust fans in a boiler room is not
recommended.
11. An exhaust fan or similar equipment can create down
draft in the stack or restrict the burner's air supply which
will result in poor combustion. It is essential that only
fresh air is allowed to enter the combustion air system.
Foreign substances, such as combustible volatiles in the
combustion system can create hazardous conditions.
If foreign substances can enter the air stream, the
boiler combustion air inlet must be piped to an outside
location.
12. Particulate matter or chemicals (example:
perchlorethylene, halogenated compounds) in the
combustion air supply to the boiler will cause damage
or failure to the burner. High-risk situations for
particulate matter to be in the air include construction
and maintenance activities. See Table 6.
Tender No. MET21-117 ADDENDUM #3
2-16
Maximum
Positive Draft
+1.50 " W.C.
+1.50 " W.C.
+1.50 " W.C.
Free Area
square feet
(meters)
3.5 (0.325)
5.2 (0.48)
6.9 (0.64)
Design & Build RFP: Gas Heating Upgrade
Replacement in Dartmouth
EDR-IOM-2014-0318
13. In Canada, for recommended practice, refer to CSAB1.
 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. Ensure space and nearby
products are evaluated for the potential of combustion
air contaminants. See Table 6.
TABLE 6 - PRODUCTS/CONTAMINANTS TO AVOID
Products to avoid
Areas with the
potential to have
contaminants
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.
Per ASME Section VI Para. 6.04 and NBIC, unobstructed
air ventilation openings (one near ceiling, one near
fl oor) should be sized on the basis of one square inch
free area per 2000 BTU/HR maximum fuel input of the
combined burners located in the boiler room. This is
subject to state and local regulations.
4. Consistent proper ventilation of the boiler room is
essential for good combustion. Install two fresh air
openings, one at a low level, 24" (610 mm).
5. Boiler room pressure must be neutral relative to the
outdoors.
6. Ensure there is not negative pressure in the boiler room.
If any negative pressure is present, sealed combustion
to the outdoors must be ensured.
 Air Piped From Outside Boiler Room
Adhere to the following for installation:
1. The combustion air supply can be piped directly to the
SECTION 2
Products containing chloro/fl ouro-
carbons; chlorine-based products;
calcium chlroide products, sodium
chloride products, paint and varnish
removers, hydrochloric acid, muri-
atic acid, cements, glues, antistatic
fabric softeners
Dry cleaning/laundry areas; swim-
ming pools; repair shops; process-
ing plants; manufacturing plants,
new construction
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