Справочник Пользователя для Procom EL250RYLB-O

       WARNING:  This heater shall
not be  installed  in a  confined  space
or unusually   tight  construction
unless provisions  are  provided  for
adequate combustion and  ventila-
tion  air.  Read the  following  in-
structions  to  insure  proper fresh
air for this  and other  fuel-burning
appliances in your home.

The  following  are excerpts from
National  Fuel  Gas Code, NFPA 54/
ANSZ 223.1.Section 5.3, Air for
Combustion  and  Ventilation.
All  spaces  in  homes  fall  into  one
of the  three  following  ventilation
classifications:
1.   Unusually Tight Construction
2.   Unconfined Space
3.   Confined Space
The information on pages 5  through
6 will  help  you classify   your  space
and provide  adequate  ventilation.

The  National Fuel Gas Code, ANS
Z223.1 defines a confined space as
a space   whose   volume is less
than 50 cubic feet  per 1,000 Btu per
hour  (4.8 m

3

  per  kw)  of  the  aggre-

gate input  rating  of all appliances
installed in  that  space and an
unconfining  space as  a  space
whose  volume  is  not  less than 50
cubic feet  per 1,000  Btu per hour
(4.8 m

3

 per  kw) of  the aggregate

input  rating  of  all  appliances  in-
stalled in  that  space.  Rooms  com-
municating directly  with  the  space
in  which  the appliances  are
installed*,  through openings  not
furnished  with  doors, are  consid-
ered a  part  of  the  unconfined
space.

This  heater  shall  not  be  installed
in a  confined  space  or  unusually
tight construction  unless  provisions
are    provided   for  adequate  com-
bustion  and  ventilation air.
*  Adjoining  rooms  are  communi-
cating only  if  there  are  doorless
passageways  or   ventilation  grills
between them.

Use  this  worksheet  to  determine  if  you  have  a  confined  or  unconfined  space.
Space:   Includes  the room in which  you  will  install  heater  plus any  adjoining  rooms with doorless  passageways
or  ventilation  grills  between  the  rooms.
1.   Determine  the  volume  of  the space (length

×

width

×

height).

       Length

×

Width

×

Height=                  cu.ft. (volume of space)

       Example:  Space  size  20ft. (length)

×

16ft. ( width)

×

8ft.  (ceiling  height)=2560 cu. ft. (volume of space)

       If  additional  ventilation  to adjoining  room  is  supplied  with  grills  or  openings,  add  the  volume  of  these
       rooms  to  the  total  volume  of  the  space.
2.   Divide  the  space  volume  by  50  cubic  feet  to  determine  the  maximum  Btu/Hr  the  space  can  support.

                          (volume of space)

÷

50 cu. ft.=(Maximum Btu/Hr the space can support)

      Example:  2560 cu. ft. (volume of space)

÷

50 cu.ft.=51.2 or 51,200(maximum Btu/Hr  the space can support)

The  air  that  leaks  around  doors
and windows  may  provide  enough
fresh  air for  combustion  and
ventilation. However, in  buildings  of
unusually  tight construction, you
must provide   additional  fresh  air.
Unusually  tight  construction  is
defined as  construction  where:
a)   walls  and  ceilings  exposed  to
the outside   atmosphere   have  a
continuous water  vapor retarder with
a rating of one perm ( 6×10

-11

 kg per

pa-sec-m

2

) or less with openings

gasketed or sealed and
b)   weather  stripping  has  been
added on windows that open and
doors and
c)   caulking  or  sealants  are ap-
plied to areas such as joints  around
window and door frames, between
sole plates  and  floors, between  wall-
ceiling joints, between  wall panels,
at penetrations for plumbing,
electrical, and gas lines, and at  other
openings.
If  your  home  meets  all  of  the
three criteria  above,  you  must  pro-
vide    additional fresh air. See Venti-
lation Air From Outdoors, page 6.
If your home does not meet all of the
three criteria above, proceed to
Determining  Fresh-Air  Flow  For
Heater Location, below.