AHRI UG75, Руководство пользователя

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5 4
1,000 BTU/hr 1,000 BTU/hr
4,000 BTU/hr
4,000 BTU/hr
4,000 BTU/hr
2,000 BTU/hr
2,000 BTU/hr
Espace confiné Espace confiné
Espace
confiné
Espace
confiné
Espace
confiné
Espace
confiné
(min.: 100 po
2
)
1 po
2
1 po
2
Entrée d’air
Alternative
Entrée d’air du
sous-sol
1 po
2
1 po
2
d’entrée d’air
Entrée
1 po
2
1 po
2
Figure 4
In U.S.A. (refer to ANSI Z223.1/NFPA 54)
1)
All Air From Inside the Building (see Figure 4):
The confined space shall be provided with two
permanent openings communicating directly with
one or more rooms of sufficient volume, so that the
combined volume of all spaces meets the
criteria for an unconfined space. The total input
rating of all gas appliances installed in the
combined space shall be considered in making
this determination. Each opening shall have a
minimum free area of
one (1) in 2 /1,000 BTU (22.0
cm 2 /kW)
of the total input rating of all gas appli-
ances in the confined space, but not less than one
hundred (100) square inches (645 cm
2
). One opening
shall commence within six (6) inches (15.2 cm) of the
top and one within six (6) inches (15.2 cm) of the bottom
of the enclosure.
2)
All Air From Outdoors:
The confined space shall be provided with two
permanent openings, one commencing within six (6)
inches (15.2 cm) of the top and one commencing
within six (6) inches (15.2 cm) from the bottom of the
enclosure. The openings shall communicate directly
or by ducts, with the outdoors or spaces (crawl or
attic) that freely communicate with the outdoors.
A) When communicating directly with the outdoors,
each opening shall have a minimum free area of
one (1) in 2 /4,000 BTU (5.5 cm 2 /kW)
of the total input
rating of all gas appliances in the enclosure (see
Figure 5
).
B)
When communicating with the outdoors through
vertical ducts, each opening shall have a minimum
free area of
one (1) in 2 /4,000 BTU (5.5 cm 2 /kW)
of
the total input rating of all gas appliances in the
enclosure (see Figure 6).
C)
When communicating with the outdoors through
horizontal ducts, each opening shall have a minimum
free area of
one (1) in
2
/2,000 BTU (11.0 cm
2
/kW)
of
the total input rating of all gas appliances in the
enclosure (see Figure 7).
1,000 BTU/hr 1,000 BTU/hr
4,000 BTU/hr
4,000 BTU/hr
4,000 BTU/hr
2,000 BTU/hr
2,000 BTU/hr
Espace confiné Espace confiné
Espace
confiné
Espace
confiné
Espace
confiné
Espace
confiné
(min.: 100 po
2
)
1 po
2
1 po
2
Entrée d’air
Alternative
Entrée d’air du
sous-sol
1 po
2
1 po
2
d’entrée d’air
Entrée
1 po
2
1 po
2
Figure 5
1,000 BTU/hr 1,000 BTU/hr
4,000 BTU/hr
4,000 BTU/hr
4,000 BTU/hr
2,000 BTU/hr
2,000 BTU/hr
Espace confiné Espace confiné
Espace
confiné
Espace
confiné
Espace
confiné
Espace
confiné
(min.: 100 po
2
)
1 po
2
1 po
2
Entrée d’air
Alternative
Entrée d’air du
sous-sol
1 po
2
1 po
2
d’entrée d’air
Entrée
1 po
2
1 po
2
Figure 6
1,000 BTU/hr 1,000 BTU/hr
4,000 BTU/hr
4,000 BTU/hr
4,000 BTU/hr
2,000 BTU/hr
2,000 BTU/hr
Espace confiné Espace confiné
Espace
confiné
Espace
confiné
Espace
confiné
Espace
confiné
(min.: 100 po
2
)
1 po
2
1 po
2
Entrée d’air
Alternative
Entrée d’air du
sous-sol
1 po
2
1 po
2
d’entrée d’air
Entrée
1 po
2
1 po
2
Figure 7
INSTALLATION INSTRUCTIONS